+

WO1992005553A1 - Dispositif d'extraction et de reproduction d'informations - Google Patents

Dispositif d'extraction et de reproduction d'informations Download PDF

Info

Publication number
WO1992005553A1
WO1992005553A1 PCT/NL1991/000170 NL9100170W WO9205553A1 WO 1992005553 A1 WO1992005553 A1 WO 1992005553A1 NL 9100170 W NL9100170 W NL 9100170W WO 9205553 A1 WO9205553 A1 WO 9205553A1
Authority
WO
WIPO (PCT)
Prior art keywords
picture
information
coded
preferential
reproduction
Prior art date
Application number
PCT/NL1991/000170
Other languages
English (en)
Inventor
Jozef Maria Karel Timmermans
Original Assignee
N.V. Philips' Gloeilampenfabrieken
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NL9002109A external-priority patent/NL9002109A/nl
Application filed by N.V. Philips' Gloeilampenfabrieken filed Critical N.V. Philips' Gloeilampenfabrieken
Publication of WO1992005553A1 publication Critical patent/WO1992005553A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32106—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title separate from the image data, e.g. in a different computer file
    • H04N1/32112—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title separate from the image data, e.g. in a different computer file in a separate computer file, document page or paper sheet, e.g. a fax cover sheet
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/391—Resolution modifying circuits, e.g. variable screen formats
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G11B27/3036—Time code signal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00962—Input arrangements for operating instructions or parameters, e.g. updating internal software
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32106—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title separate from the image data, e.g. in a different computer file
    • H04N1/32122—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title separate from the image data, e.g. in a different computer file in a separate device, e.g. in a memory or on a display separate from image data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32128—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title attached to the image data, e.g. file header, transmitted message header, information on the same page or in the same computer file as the image
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/877—Regeneration of colour television signals by assembling picture element blocks in an intermediate memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/88—Signal drop-out compensation
    • H04N9/888—Signal drop-out compensation for signals recorded by pulse code modulation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/17—Card-like record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2525—Magneto-optical [MO] discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs
    • G11B2220/255—CD-I, i.e. CD-interactive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/40—Combinations of multiple record carriers
    • G11B2220/41—Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/60—Solid state media
    • G11B2220/65—Solid state media wherein solid state memory is used for storing indexing information or metadata
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/002—Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/326—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is a video-frame or a video-field (P.I.P.)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H04N19/39—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability involving multiple description coding [MDC], i.e. with separate layers being structured as independently decodable descriptions of input picture data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3226—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of identification information or the like, e.g. ID code, index, title, part of an image, reduced-size image
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3242—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of processing required or performed, e.g. for reproduction or before recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3243—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of type information, e.g. handwritten or text document
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3254—Orientation, e.g. landscape or portrait; Location or order of the image data, e.g. in memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3274—Storage or retrieval of prestored additional information
    • H04N2201/3277—The additional information being stored in the same storage device as the image data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/781—Television signal recording using magnetic recording on disks or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
    • H04N5/9206—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a character code signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal

Definitions

  • the invention relates to an information retrieval and reproduction device comprising a read unit for reading a record carrier provided with a main data file and a control file containing optional preferential setting data defining preferential reproduction settings, a control unit for controlling the reproduction of a representation of the information in the main data file in accordance with preferential reproduction settings.
  • Such a device is known from US 4,845,571.
  • the known device is adapted to reproduce representations of coded still pictures recorded on an optical disc.
  • the sequence in which the information is read by this device conforms with a preferential reproduction setting recorded on the record carrier. If a record carrier of the write-once type is used the problem arises that a subsequent adaptation of the recorded preferential reproduction settings cannot be effected simply.
  • the device comprises means for reading out additional preferential setting data from at least one additional memory of a non-volatile type, selection means for selecting one preferential reproduction setting from different preferential reproduction settings defined for the relevant record carrier by the preferential reproduction data in the control file and the additional preferential setting data in the additional memory, the control unit being adapted to control said reproduction in accordance with the selected preferential reproduction setting.
  • An embodiment of the device is characterized in that the device comprises means for the entry of preferential reproduction settings, means for storing in the additional memory, together with a record carrier identification, differences between the preferential reproduction settings recorded on the record carrier and the entered preferential reproduction settings.
  • a further embodiment of the device is characterized in that the additional memory comprises a changeable memory.
  • the use of a changeable memory has the advantage that the recorded information can be reproduced in conformity with the desired preferential reproduction setting on any information and reproduction device to which the changeable memory can be connected and capable of interpreting the content of the memory.
  • An embodiment of the device is characterized in that the selection means are adapted to carry out said selection in accordance with a predetermined selection criterion.
  • This embodiment enables an automatic choice to be made between the stored preferential reproduction settings on the basis of predetermined priority rules.
  • An attractive priority scheme is that which assigns the highest priority to the preferential reproduction settings in the changeable memory, medium priority to the preferential reproduction setting information in the fixed non- volatile memory, and the lowest priority to the preferential reproduction settings on the record carrier. During reproduction of the information the setting of highest priority is then always selected from the preferential reproduction settings available for the relevant record carrier.
  • Figures la, lb and lc show a picture-storage system, a picture retrieval and reproduction system, and a simplified picture retrieval and reproduction system respectively,
  • Figure 2 shows a suitable format for recording picture information on a record carrier
  • Figure 3 illustrates a suitable coding of picture information
  • Figure 4 illustrates a suitable residual coding to be used for in the coding of picture information
  • Figure 5 illustrates a suitable arrangement of the color information of a picture for a series of coded pictures of increasing resolutions
  • Figure 6 shows a format of a subfile containing a residually coded picture
  • Figure 7 shows a record carrier on which recorded coded picture lines have been arranged in a suitable manner
  • Figure 8 shows a picture composed of picture lines
  • Figure 9 illustrates a number of different picture processing functions
  • Figure 10 shows an embodiment of a retrieval and reproduction system capable of displaying picture information in accordance with preferential reproduction settings
  • Figure 11 shows a suitable format for recording preferential reproduction settings on the record carrier
  • Figure 12 shows a suitable format for storing preferential reproduction settings in a non- volatile memory
  • Figure 13 shows a mosaic picture composed of sixteen low- resolution images
  • Figure 14 shows in greater detail an embodiment of the simplified picture retrieval and reproduction system
  • Figure 15 shows an embodiment in which control data groups can be arranged in packets
  • Figure 16 shows a data extraction circuit for use in the picture retrieval and reproduction system shown in Fig. 14,
  • Figure 17 shows in greater detail an embodiment of the picture storage system
  • Figure 18 shows a recording unit for use in the picture storage system
  • Figure 19 diagrammatically illustrates the CD-ROM XA format
  • Figure 20 shows a suitable organisation of the record carrier if the picture information has been recorded in accordance with a CD-I format
  • Figures 21, 23 and 24 show suitable configurations of picture lines of absolutely coded pictures for a number of different resolutions if the recorded information has been divided into blocks in accordance with a CD-I format
  • Figure 22 shows a picture made up of picture lines to illustrate the configuration shown in Fig. 21,
  • Figure 25 shows an example of a picture processing unit
  • FIGS 26 and 27 illustrate picture processing functions to be performed by the picture processing unit
  • Figure 28 shows an embodiment of a read device
  • Figures 29 and 31 diagrammatically show examples of a simplified picture processing unit
  • Figure 30 illustrates the operation of the simplified picture processing unit shown in Figures 29 and 31.
  • FIG. la shows a picture storage system 12 in which the invention can be used.
  • the picture storage system 12 comprises a picture scanning unit 1 for scanning pictures on a picture carrier 3, for example a strip- shaped photographic negative or slide.
  • the picture scanning device 1 further comprises a picture coding unit for coding the picture information obtained upon scanning.
  • the coded picture information is recorded on a record carrier 184 by means of a recording unit 5 under control of a control unit 4.
  • the control unit 4 Prior to recording the control unit 4 can apply an optional picture processing, for example to enhance, correct or edit the picture representation defined by the coded picture information.
  • the control unit may comprise picture processing means which are known rjer se.
  • the recording unit 5 may comprise, for example, an optical, a magnetic or a magneto-optical recording device.
  • control unit 4 may comprise a computer system, for example a so-called "personal computer” or a so-called work station with suitable hardware and application software.
  • Figure lb shows a picture retrieval and reproduction system for retrieving and displaying representations of coded pictures stored on the record carrier 184 by means of the picture storage system 12.
  • the picture retrieval and reproduction system 13 comprises a read unit 6 for locating and reading out selected coded pictures under control of a control unit 7. Representations of coded pictures thus read can be displayed on a picture display unit.
  • a picture display unit may comprise a display screen 8, which for example forms part of the control unit 7, or an electronic image printer 9 for generating a hard copy 15 of a representation of the read-out coded picture.
  • the picture retrieval and reproduction system 13 may further comprise an additional recording device 5a, by means of which the coded picture information read by means of the read device 6, after an optional picture processing operation performed by the control unit 7 for the purpose of enhancement, correction or editing.
  • the control unit in the picture retrieval and reproduction system 13 may comprise a computer system, for example a "Personal Computer", or a work station with suitable hardware and application software. Although such a system is very suitable for the control task to be performed and the optional picture processing it has the drawback that it is comparatively expensive.
  • control unit in conjunction with the electronic image printer 9 because of the complexity of the control and picture processing functions.
  • computing capacity and storage capacity of a computer system in the form of a personal computer or work station are high in comparison with the control functions to be performed. In that case it is preferred to employ a simplified control unit with a limited computing and storage capacity and a limited data processing speed.
  • FIG. lc shows such a simplified picture retrieval and reproduction system 14.
  • This simplified system 14 comprises a display unit 10 and a picture retrieval and read unit 11 comprising the read unit 6.
  • a control unit for controlling the retrieval and read operation and, if applicable, a limited picture processing can be accommodated in one of the units 10 and 11, but suitably in the unit 11.
  • the control unit is accommodated in the retrieval and read unit 11 it is possible to employ, amongst others, a standard TV set or monitor unit for the picture display device.
  • Figure 2 shows a suitable format and order, in which files containing coded picture information bear the references IP1, ..., IPn.
  • the files IP1, ...,IPn will be referred to as picture files.
  • a plurality of control files BB have been recorded. These files contain control data which is used for controlling the read-out of the coded picture information, for the purpose of performing optional picture processing operations on the picture information read and for the purpose of displaying representations of the coded picture information. It is to be noted that part of the control data may be included in the picture files.
  • this part of the control data is the part relating specifically to the control of the read-out, display and picture processing of the coded picture information contained in the relevant picture file.
  • the advantage of this is that the required control data becomes available at the instant at which it is needed, e. at the instant at which the picture file is read.
  • the picture files Ip and the associated control files BB may be desirable in a number of cases to record files with additional information, for example audio information or text information.
  • audio and/or text information may relate to, for example, coded picture information and can then be reproduced or displayed when the representations of the relevant coded picture information are displayed.
  • the files with additional information are referenced ADD and may be recorded, for example, after the coded picture information.
  • the picture files contain a plurality of subfiles, which each define a representation of the same scanned picture, the resolutions of the representations defined by these coded pictures being different.
  • the different subfiles for the picture file IP1 bear the references TV/4, TV, 4TV, 16TV, 64TV, 256TV.
  • the subfile TV defines a representation of the scanned picture with a resolution corresponding substantially to a standard NTSC or PAL TV picture. Such a picture may comprise, for example, 512 lines of 768 pixels each.
  • the subfile TV/4 represents the scanned picture with a resolution which in the horizontal and the vertical direction has been reduced linearly by a factor of 2 relative to the resolution of the picture represented by the subfile TV.
  • the subfiles 4TV, 16TV, 64TV and 256 TV define picture representations whose horizontal and vertical resolution has been increased linearly by a factor of 2, 4, 8 and 16 respectively.
  • the subfiles are arranged in such a way that the resolutions of the representations defined by the successive coded pictures increase (linearly) in steps of 2.
  • a generally known representation of pictures is that in which the picture is composed of a matrix of small areas of constant luminance value and/or constant color value. In this representation it is customary to select the areas of constant color value to be larger than the areas of constant luminance value.
  • a color pixel An area of constant color value will be referred to hereinafter as a color pixel and an area of constant luminance value will be referred to hereinafter as a luminance pixel.
  • a row of color pixels of a width equal to the full picture width will be referred to hereinafter as a color picture line.
  • a row of luminance pixels of a width equal to the full picture width will be referred to hereinafter as a luminance picture line.
  • a picture represented by luminance picture lines and color picture lines can be defined simply by a coded picture by assigning to each luminance pixel and color pixel a digital code specifying the relevant luminance value and color values.
  • Figure 3 by way of illustration shows the structure of a picture of color pixels and luminance pixels.
  • the luminance pixels bear the reference signs (Y2 - ...; Y j ⁇ _ ⁇ j ->_ ⁇ ).
  • the color pixels bear the reference signs (C ⁇ j ; ...; C ⁇ R ).
  • the dimensions of the color pixels in the horizontal and the vertical direction is twice as large as the dimensions of the luminance pixels. This means that the resolution of the color information in the horizontal and the vertical direction is a factor of two lower than the resolution of the luminance information.
  • a suitable picture coding is that in which a digital code or digital codes is/are assigned to every luminance pixel and every color pixel, the code(s) defining the absolute value of the luminance component Y and the absolute values of the colour-difference components U and V respectively.
  • Such a coding will be referred to hereinafter as an absolute picture coding.
  • representations of a number of low-resolution pictures are recorded as absolutely coded pictures. This enables the picture information to be recovered in a simple manner. This is particularly advantageous for the simplified picture retrieval and reproduction system 14, because this enables the price of such a system, which is intended for the consumer market, to be kept low by the use of simple picture decoding systems.
  • the erroneously read pixels can be replaced simply by pixels (or a picture line) derived from one or both adjacent picture lines. It is to be noted that erroneously read pixels can also be restored readily by the use of so-called error-correction codes.
  • error-correction codes The correction of errors on the basis of such error- correction codes is comparatively intricate and is therefore less suitable for use in the simplified picture retrieval and reproduction system 14, in which the use of complex circuits should be avoided whenever possible in view of the resulting high cost.
  • the part of the track needed for recording a coded picture will occupy a plurality of turns of the spiral track.
  • the coded picture lines defining adjacent picture lines in the representation of the picture to be reproduced do not adjoin each other neither in the track direction (also referred to as tangential direction) nor in a direction transverse to the track (also referred to as radial direction), which will be explained with reference to Figures 7 and 8.
  • Figure 7 shows a disc-shaped record carrier 70 on which picture 80 composed of consecutive picture lines 11, ..., In has been recorded in a spiral track 71 in the form of a series of absolutely coded picture lines BLal, BLa3, BLa5, BLa7, BLa9, BLall, BLal3, BLa2, BLa4, ... .
  • the absolutely coded picture lines BLal, ..., BLal3 represent the picture lines 11, ..., 113 respectively.
  • the absolutely coded picture lines have been recorded in such a way that the information of consecutive picture lines is not contiguous neither in a radial nor in a tangential direction.
  • the reference numeral 72 refers to an unreadable disc portion, also called disc defect.
  • the defect shown extends over more than one turn of the spiral track 71. Since the coded picture lines defining adjacent picture lines of the representation do not adjoin one another neither radially nor tangentially this prevents coded picture lines which define adjacent picture lines in the representation from being read incorrectly as result of the occurrence of disc defects. It is to be noted that for the sake of clarity the length occupied by the coded picture lines BLa on the recording is shown to be substantially greater than in reality. In practice, it occurs comparatively often that a disc defect occupies a plurality of consecutively recorded coded picture lines.
  • FIG. 4 shows one luminance pixel Y of a low-resolution picture and four luminance pixels Y j j '; Y 2 j '; Yj 2 ⁇ d ⁇ 2 2 °f ⁇ e corresponding higher-resolution picture in the case that the horizontal and the vertical resolution is increased by a factor of 2.
  • the residual coding encodes differences (hereinafter referred to as residual values) between the luminance values of the luminance pixels Y j 2'» •••» ⁇ 2 2 zn( ⁇ the luminance pixel Y.
  • the residual values of a complete picture can be determined both for the luminance and for the color information.
  • the number of residual values equal to zero or being very small is large in comparison with the number of large residual values a substantial data compression can be obtained by applying an additional coding in which the residual values are non- linearly quantized and are subsequently subjected to, for example, a Huffman coding.
  • a residually coded picture can be used as a basis for a new residual coding for a picture with further increased resolutions.
  • a picture file IPl shown in Fig. 2 the pictures in the subfiles TV/4 and TV are absolutely coded and the pictures in the subfiles 4Tv, 16TV, 64TV and 256TV are residually coded, with non-linear quantization and Huffman coding.
  • Such a coded picture will be briefly referred to hereinafter as a residually coded picture.
  • the color information is also coded residually in a way similar to the luminance information.
  • the horizontal and the vertical resolution of the consecutive residually coded color information increases by a factor of four instead of by a factor of two as with the luminance information.
  • Leaving out the color information in the subfiles 4TV and 64TV reduces the required storage capacity and the access time to the coded picture information in the picture file.
  • the absence of the color information in the subfiles 4TV and 64TV need not adversely affect the picture quality during reproduction.
  • the color pixels belonging to U*, V* (UVll; UV31; UV51; ...) are represented as shaded blocks and the color pixels belonging to U', V (UV21; UV41, ..., UV12; UV22; UV2) are represented as non-shaded blocks.
  • the information U*, V* in 16Tv and 256TV defines the color information with a horizontal and vertical resolution which is half the resolution of the luminance information defined by the subfiles 4TV and 64TV respectively.
  • the luminance information in the subfile 4TV and 64 TV respectively together with the color information U*, V* in the subfiles 16Tv and 256TV respectively again define a representation whose horizontal and vertical resolution of the color information is equal to half the resolution of the luminance information.
  • the ratio between the resolution of the color information and the luminance information of a representation defined by the combination of the luminance information of a subfile 4TV and 64TV and the color information U*V* of a subfile 16TV and 256TV respectively is equal to the ratio between the resolution of the color information and the luminance information of the representations defined by the subfiles TV/4, TV, 16TV and 256TV as a total, so that representations of all the stored coded pictures with the same resolution ratio between color and luminance information can be displayed.
  • the residual values are represented by means of codes of varying length. This means that the space required for recording the residually coded picture lines is variable. Therefore, the position at which the beginning of the residually coded picture line is recorded is not unambiguously defined by the beginning of recording of the first coded picture line of a coded picture. This complicates the selective read-out of the coded picture lines, for example only those coded picture lines needed to carry out a TELE function. This problem can be mitigated by recording a line number LN (see Fig.
  • the line synchronization code may be, for example, a unique bit combination which does not occur within the series of Huffman codes representing information of the residually coded picture elements. It is to be noted that the addition of the line synchronization codes LD and line numbers LN has the additional advantage that it facilitates the read synchronization and significantly reduces error propagation after an erroneously read residual code.
  • a very fast retrieval of selected coded picture lines can be achieved in that the addresses at which the recordings of coded picture lines on the record carrier begin are recorded on the record carrier in a separate control file, preferably at the beginning of each subfile.
  • these addresses have been indicated, by way of example, as ADLN#1, ..., ADLN#1009 in the control file IIDB at the beginning of the subfile 4TV.
  • the picture line information in the form of the series of residually coded picture lines is inserted in the section APDB of the subfile 4TV. (The section APDB represents the actual picture information within the subfile 4TV).
  • a read element is moved relative to the record carrier to a position at a short distance before the starting point where the recording of the coded picture line begins. Subsequently, a fine search process is carried out in which, while the record carrier is scanned with a speed corresponding to the normal read speed, the beginning of the recording of the selected residually coded picture line is awaited, after which reading of the selected coded picture line is started.
  • the accuracy with which the read element can be positioned relative to the record carrier during the coarse search process is limited and in optical data storage systems it is generally much greater than the distances between the positions at which the recordings of successive coded picture lines on the record carrier begin.
  • the average search accuracy during a coarse search process is by definition equal to half the length of one turn of the disc, which means that the distances between the positions specified by addresses substantially correspond to half the length of one turn of the disc when disc ⁇ shaped record carriers are used.
  • the stored coded pictures generally define a number of pictures in landscape format (i.e. for a faithful reproduction the picture should be displayed in an orientation in which the width of the picture is larger than the height of the picture) and a number of pictures in portrait format (i.e. for a faithful reproduction the picture should be displayed in an orientation in which the height of the picture is larger than the width of the picture).
  • Figure 1 shows an image carrier with some pictures in landscape format (2a, 2b, 2c and 2d) and one picture in portrait format (2e).
  • the record carrier all the coded pictures are recorded as though they were representations of pictures in landscape format. This is in order to enable a uniform picture scanning to be used without the necessity to detect whether the scanned picture is of the landscape or portrait type and to change over the scanning and/or picture processing depending upon the detection result. However, this means that during reproduction the representations of portrait format pictures will be displayed in an incorrect rotated position.
  • This rotation code can be included in every picture file IPl, ..., Ipn. It is also possible to record these rotation codes in the control file BB or to store these rotation codes in a non ⁇ volatile memory arranged in the read unit or connected to this unit.
  • a suitable position for recording the rotation codes is the subfile FPS of the control file BB.
  • a representation which is slightly shifted should be displayed. This is certainly desirable if the display area within which the representation is to be displayed in a display unit is smaller than the dimensions of the representations, because it is possible that an important detail of the picture falls outside the display area.
  • the desired shift can be specified by assigning a translation code to every coded picture.
  • a suitable translation coding for a picture 90 is defined by means of the coordinates xp and yp of a vertex 91 of the picture 91 to be displayed after translation.
  • a translation code and a magnification code it is possible to specify the magnification factor with which a certain part of the original picture is to be displayed.
  • the reference numeral 93 indicates an enlarged representation of a part of the picture 90, defined by a translation xp, yp and a magnification factor of 2.
  • other picture display data in the subfile FPS of the control file BB such as for example parameters specifying a color or luminance adaptation to be applied before a representation of the coded picture is displayed.
  • preferential reproduction settings The afore-mentioned information about the display sequence, rotation, translation, magnification, brightness and color adaptations and other picture processing operations to be performed prior to reproduction of the representation of the coded picture will be referred to hereinafter as preferential reproduction settings.
  • a collection of preferential reproduction settings defining the preferred sequence as well as all the desired picture processing operations for all the coded pictures on a record carrier will be referred to hereinafter as a set of preferential reproduction settings. It may be advantageous to record more than one set of preferential reproduction settings in the file FPS. This enables a different display sequence and other picture processing operations to be selected by different persons, for example persons within a family. It also allows a user to make a choice from different sets of preferential reproduction settings.
  • FIG. 10 is a block diagram of an embodiment of a picture retrieval and display system by means of which representations of coded pictures can be displayed in conformity with a selected set of preferential reproduction settings.
  • the reference numeral 100 refers to a read unit for reading the record carrier.
  • the read unit 100 is coupled to a control and signal processing unit 101.
  • the unit 101 selects the file FPS containing the set(s) of preferential reproduction setting(s) and stores this (these) set(s) in a control memory 102.
  • a data entry unit 103 for example a remote control device
  • a user can select a set from the control memory 102 and can subsequently activate the unit 101 to start the read cycle, in which the coded picture information is read in the sequence specified by the selected set of preferential reproduction settings under control of the unit 101. After the coded picture information has been read out this information is processed in accordance with the selected set of preferential reproduction settings and is applied to a display unit 104.
  • Fig. 11 shows by way of example a suitable format 110 of the preferential reproduction settings included in the file FPS on the record carrier.
  • the format 110 comprises a section DID in which the unique record carrier identification code is stored.
  • Such a code may comprise a large random number generated by means of a random-number generator and recorded on the record carrier.
  • the code may comprise a time code indicating the time in years, months, days, hours, minutes, seconds and fractions of seconds.
  • the record carrier identification code may comprise a combination of a time code and a random number.
  • the section Did is followed by sections FPS1, FPS2, ..., FPSn in which a number of different sets of preferential reproduction settings are stored.
  • FPSn contains a portion SEL in which a set identification number for each of the different sets of preferential reproduction settings to be selected by different users are specified, and a portion specifying the sequence SEQ in which the representations of the stored pictures are to be reproduced. This portion is followed by the coded sections FIM#1, ..., FIM#n storing for the pictures 1, ..., n preferential processing operations to be performed before the representation of the relevant picture are displayed.
  • Fig. 12 shows by way of example a suitable format 120 in which the information about the desired adaptations of the set of preferential reproduction settings can be stored in the non-volatile memory 105.
  • the format 120 comprises a section 121 specifying combinations of record carrier identifications and set identification numbers for which information about preferential reproduction settings has been stored. To each of these combinations a pointer is assigned, which pointer is included in the section DID-POINT and specifies the address of the sections DFPS1, ..., DFPSn in the non-volatile memory 105.
  • Every section DFPS comprises a portion LSEQ with a code indicating the space (for example in numbers of bytes) required to specify the new sequence. If the portion LSEQ indicates a length not equal to zero LSEQ will be followed by a portion NSEQ with the data specifying the new display sequence. After NSEQ the new preferential processing operations are specified for every picture with modified preferential processing operations. ROT indicates the section with the rotation code.
  • the sections LTELE and LPAN specify the length available for the storage of the new data relating to picture magnification (in a section NTELE) and picture translation (in a section NPAN). In this way it is possible to select the accuracy with which the picture processing information is to be stored.
  • a changeable memory 106 for example in the form of a magnetic card, EPROM, EEPROM or NVRAM, can be employed for the storage of preferential reproduction settings in the retrieval and display system shown in Fig. 10.
  • This has the advantage that a user can display the picture information on a record carrier in accordance with the same preferential reproduction setting on different picture retrieval and display systems to which a changeable memory 106 can be connected.
  • the unit 101 should comprise selection means. These selection means may be of a type which are operated by the user to make a choice from the various sets of preferential reproduction settings defined for one specific record carrier and selection number by the preferential reproduction setting information stored on the record carrier and in the memories 105 and 106.
  • these selection means may be of a type which, prior to reproduction on the basis of the contents of the memories 105 and 106 and the sets of preferential reproduction settings recorded on the record carrier, determine the sets of preferential reproduction settings available for the relevant record carriers and store them, for example, in the memory 102. Subsequently, one of the available sets of preferential reproduction settings in the memory 102 is selected in accordance with a predetermined selection criterion.
  • the selection criterion is such that the highest priority is assigned to the preferential reproduction setting information in the changeable memory 106, medium priority to the preferential reproduction setting information in the non-volatile memory, and the lowest priority to the preferential reproduction settings on the record carrier.
  • the unit 101 comprises a computer, automatic selection can be realised by loading the computer with a suitable selection program.
  • a representation in the form of a so-called mosaic picture from the subfiles, in which mosaic picture a large number of representations of the coded low-resolution pictures contained in the subfiles TV/ 16 are arranged in the form of a matrix, preferably in an order dictated by the selected set of preferential reproduction settings.
  • Fig. 13 shows a mosaic picture 130 made up of the representations (IM#1, IM#3, ..., IM#26) of sixteen low-resolution subfile pictures.
  • Fig. 14 shows an embodiment of the picture retrieval and display system of Fig. lc in more detail.
  • the picture retrieval and read unit 11 comprises the read unit 6, a control unit 140 and a picture processing unit 141.
  • the read unit 6 supplies the information read from the record carrier to the control unit 140 and to the picture processing unit 141 via a signal path 142.
  • the control unit 140 selects specific information contained in the control files BB and IIDB from the information read.
  • the picture processing unit 141 selects picture information from the information read and converts this picture information into a form suitable for the display unit 10.
  • the read unit 6 and the picture processing unit 141 are controlled by the control unit 140 on the basis of the data entered by a user, for example via a data entry unit 143, and on the basis of the control data in the control files BB and IIDB.
  • the control unit 140 In view of the large amount of information for every recorded picture it is preferred to read files containing picture information with a high speed, i.e. with a high bit rate, in order to minimize the read time per picture read. However, this means that the data in the control file is also read with a high bit rate.
  • the control task is performed by the control unit 140. This control task requires only a limited data processing rate, enabling a simple slow low-cost microcomputer having a low data processing rate to be used for this purpose.
  • bit groups bear the reference numeral 150 and the packets bear the reference numeral 151.
  • the number of bits per bit group is eight and the number of bit groups per packet is two.
  • a data extraction circuit 145 can be arranged to supply each of the packets 151 of control data to the microcomputer system 144 as one bit group at a rate equal to the bit group repetition rate divided by n.
  • a data extraction circuit 145 may comprise, for example, a register 160 (see Fig. 16a) which is loaded with a clock frequency equal to the bit group repetition rate divided by n.
  • This clock signal can be obtained very simply by using one bit within each bit group 150 as a synchronization bit 152.
  • the alternation frequency may be equal to half the repetition rate of the packets (as shown in Fig. 15) or a multiple thereof. This has the advantage that a clock signal can be used which is derived directly from the synchronization bits.
  • the data extraction circuit 145 comprises a clock extraction circuit 161 which supplies an alternating clock signal corresponding to the alternating logic values of the synchronization bits to a load control input of the register 160.
  • the register 160 is of a customary type which is loaded with a bit group of each packet 151 under control of the clock signal.
  • the clock extraction circuit 161 also transfers the clock signal to the microcomputer system 144 via the signal line 162.
  • the bit groups in the control file are arranged in so-called frames, which bear the reference numeral 154 in Fig. 15. In that case it is desirable that the beginning of each frame 154 can be detected simply.
  • a very simple detection can be achieved by inserting at the beginning of the frames 154 a plurality of frame synchronization groups 153 with synchronization bits 152 which exhibit a predetermined pattern of logic values 150 which differs distinctly from the possible patterns of logic values of the synchronization bits 152 which can occur in the other packets.
  • Each frame 154 has a portion 155 containing redundant information for the purpose of detecting whether the frame has been read-in correctly by the microcomputer 144.
  • An incorrect read-in may be caused, for example, by a program interrupt, in which the process of reading in the control data is interrupted in order to carry out another control program.
  • Such a control program can be called, for example as a result of the input of data in the data entry unit 143, in order to fetch the entered data from the data entry unit 143. Since an incorrect read-in of data from the control files BB and IIDB is generally caused by a program interrupt this requires that the error correction performed on the basis of the portion 155 is carried out by the microcomputer 144 itself.
  • the data extraction circuit 145 comprises a frame synchronization detector 163 which detects the beginning of each frame on the basis of the synchronization bits 152 in the frame synchronization bit groups 153. After detection of the beginning of the frame the frame synchronization detector 163 supplies a synchronization signal to the microcomputer 144 via a signal line 164. Under control of the signals received via the signal lines 164 and 165 the microcomputer 144 reads in the control data available in the register 160 in an, in principle, customary manner. It is to be noted that, in principle, the functions of the frame synchronization detector 163 and/or the register 160 and/or the clock extraction circuit 161 can also be performed by the microcomputer 144 itself.
  • the clock signal for the register 160 is derived from the synchronization bits 152.
  • the clock signal for loading the register 160 is also possible to derive the clock signal for loading the register 160 from a picture information clock signal which is usually generated in the picture processing unit 141 for the purpose of reading in the coded picture information.
  • This picture information clock signal has a fixed relationship with the bit group repetition rate in the read ⁇ out picture files and, consequently, with the bit group repetition rate in the control files BB and IIDB. This is because the control files and picture files have been formatted and coded in the same way. Therefore, the clock signal for loading the register 160 can be derived simply from the picture information clock signal by means of a frequency dividing circuit.
  • Fig. 16b shows an example of the data extraction circuit 145, which employs a frequency divider 165 for deriving the clock signal for the register 160, which divider derives the clock signal from the picture information clock signal, which is applied to the frequency divider 165 by the signal processing unit 141 via a signal line 166.
  • the clock signal for loading the register 160 must be synchronized with the beginning of the frames 154. This can be realized simply by employing a resettable counting circuit for the frequency divider 165, which counting circuit is reset each time by a reset signal generated upon detection of the beginning of the frames.
  • the reset signal can be the signal supplied by the frame synchronization detector 163 via the signal line 164 in response to every detection of the frame synchronization bit groups 153.
  • the reset signal for the counter can be derived on the basis of the block synchronization sections (SYNC) situated at the beginning of each block (BLCK).
  • SYNC block synchronization sections
  • this requires that the beginning of each frame 154 is always situated at a fixed position relative to the block synchronization section (SYNC). This can be achieved simply by selecting the beginning of each frame 154 at the beginning of a block.
  • SYNC block synchronization section
  • each frame 154 comprises a number of bit groups not containing any control data. Indeed, upon detection of the beginning of each frame the microcomputer calls a read-in program for controlling the read-in of the applied control data. However, at this instant the microcomputer may be busy performing another control task. Such a control task must be interrupted before the read-in program can be called. This interruption of an active control task and the subsequent call for the read-in program requires some time. Arranging a number of bit groups without any control data at the beginning of each frame 154 ensures with a high reliability that during read-out of the first packet 151 of useful control data in each frame 154 the microcomputer 144 is ready to read in the control data under control of the read-in program. From the above it is evident that the synchronization bit groups 153 at the beginning of every frame may serve a dual purpose, i.e. providing synchronization and realizing a waiting time until the first useful control data is presented.
  • bit groups 153 are used only for realizing the waiting time the logic values of the bits in these bit groups 153 may assume an arbitrary value. If the bit groups 153 are also used for synchronization purposes it is important that the bit groups 153 exhibit a bit pattern which does not occur in the other bit groups of the frame 154. For this purpose numerous different methods are possible, such as for example the use of non-identical bit groups in a packet or the insertion of additional packets without useful control information between the packets of control data. The last-mentioned method may be, for example, to insert packets comprising only bits of the logic value "0" after every ten packets.
  • Fig. 17 shows an embodiment of the picture storage system 12 in greater detail.
  • the scanning unit 1 in Fig. 17 comprises a scanning element 170 for scanning the image carrier 3 and for converting the scanned picture information into customary information signals, for example RGB picture signals, representing the scanned picture.
  • the picture signals at the output of the scanning element define the highest attainable resolution in number of pixels per picture.
  • the information signals supplied by the scanning element 170 are converted into a luminance signal Y and two color-difference signals U and V by means of a customary matrix circuit 171.
  • a coding circuit 172 converts the signals Y, U and V in a customary manner into absolutely coded signals (for the lower-resolution pictures) and residually coded pictures (for the higher-resolution pictures) in accordance with the coding schemes described hereinbefore.
  • the scanning element 170, the matrix circuit 171 and the coding circuit 172 are controlled by means of a customary control circuit 174 on the basis of control commands applied to the control circuit 174 by the control unit 4 via an interface circuit
  • the absolutely and residually coded picture information generated by the coding circuit 172 is applied to the control unit 4 via the interface circuit 175.
  • the control unit 4 may comprise a computer system comprising a display unit
  • the recording unit 5 comprises a formatting and coding unit 181 which converts the information to be recorded, which information is received from the control unit via an interface circuit 182, into codes which are suitable for recording and which are arranged in a format suitable for recording.
  • the data which has thus been coded and formatted is applied to a write head 183, which records a corresponding information pattern on the record carrier 184.
  • the recording process is controlled by a control circuit 185 on the basis of the control commands received from the control unit 4 and, if applicable, address information indicating the position of the write head 183 relative to the record carrier 184.
  • the storage and control unit 177 is loaded with suitable software to arrange the residually coded picture information supplied by the scanning unit 1 in a customary manner in accordance with the afore-mentioned formatting rules and to compose the picture files IP and OV.
  • the computing and storage unit 177 has been loaded with software for inserting in the control file, in a customary manner and in accordance with the afore-mentioned formatting rules, the preferential reproduction settings input by an operator together with other automatically generated control data, such as for example a list of addresses at which the various files have been recorded on the record carrier 184.
  • the computing and storage unit 177 may further have picture processing software enabling the scanned picture information to be processed, for example for the purpose of enor correction, such as for example out-of-focus correction and grain removal, or for the purpose of color adaptation or brightness adaptation of the picture.
  • the record carrier described therein is eminently suited for recording information in accordance with a CD format.
  • a recording device for recording the files on such record carrier is shown diagrammatically in Fig. 18.
  • the shown recording device comprises a formatting circuit 186, which composes the information to be recorded, which has been applied via the interface circuit 182, in accordance with a formatting scheme , for example as customary in the so-called CD-ROM or CD-ROM XA system.
  • each block BLCK comprises a block synchronizing section SYNC, a header section HEAD containing an address in the form of an absolute time code corresponding to the absolute time code in the subcode portion recorded with the block, and if the CD-ROM XA format is used the block BLCK further comprises a subheader section SUBHEAD containing inter alia a file number and a channel number.
  • each block BLCK comprises a DATA section containing the information to be recorded.
  • Each block BLCK may also comprise a section EDC&ECC containing redundant information for the purpose of error detection and error corrections.
  • the recording unit 5 shown in Fig. 18 further comprises a CIRC coding circuit 187 for interleaving the information and for adding parity codes for the purpose of error detection and error correction (hereinafter also referred to as error correction codes).
  • the CIRC encoding circuit 187 performs the above-mentioned operations upon the formatted information supplied by the formatting circuit 186. After these operations have been performed the information is applied to an EFM modulator 188, in which the information is given a form which lends itself better for recording on the record carrier.
  • the EFM modulator 188 adds subcode information, which includes inter alia an absolute time code as address information in the so-called subcode Q channel.
  • Fig. 20 shows an organization of the record carrier in the case that the information has been recorded in the track 20 in accordance with the CD format described above. Parts corresponding to the organization shown in Fig. 2 bear the same reference numerals.
  • the recorded information is preceded by a lead-in section LI (also referred to lead-in track), as customary in the recording of CD signals, and is terminated with a customary lead-out section LO (also referred to as lead-out track).
  • a lead-in section LI also referred to lead-in track
  • LO also referred to as lead-out track
  • control file BB When the information is recorded in CD format it is preferred to include in the control file BB a section recorded in accordance with the CD-I standard. These sections are the "Disk Label & Directory", referenced DL, and the so-called application programs, referenced AF. This enables the recorded picture information to be displayed by means of a standard CD-I system. Preferably, a subfile FPS with the sets of preferential reproduction settings is also included in the application program section AF.
  • the control file BB comprises a subfile IT comprising a section CNTR with control data and a section FPS with the sets of preferential reproduction settings in the format already described with reference to Fig. 15.
  • the section IT is recorded in a predetermined area on the record carrier in a section of predetermined length. This is in order to simplify retrieval of the required information by the microcomputer. If the section IT is not large enough to accommodate all the control data a part of the control data can be recorded in a section ITC after the file OV. In that case it is preferred to include a pointer in the section IT to specify the starting address of ITC.
  • Fig. 21 shows for the absolutely coded subfile TV such an arrangement of the picture lines Y01, Y02, ..., Y16 with absolutely coded luminance information and the picture lines C01, C03, ..., C15 with absolutely coded color information, that successive lines do not adjoin each other in the track direction (also referred to as tangential direction) and in a direction transverse to the track (also referred to as radial direction).
  • Fig. 22 shows the positions of the picture lines for the associated picture representation. As is shown in Figs.
  • a number of odd coded luminance picture lines (Y01 , Y03, ..., Y15) with coded luminance information are recorded in a section comprising the blocks BLCK #1, #2 and #3, subsequently a number of even coded color picture lines (C01, C05, ..., C13) with coded color information are recorded in a section comprising the blocks BLCK #4 and #5, then the even coded luminance picture lines (Y02, ..., Y16) with coded luminance information are recorded in a section comprising the blocks BLCK #5, ..., #8, and finally the coded even color picture lines (C03, C07, ..., C15) with coded color information are recorded in a section comprising the blocks BLCK #8 and #9.
  • the coded picture lines in the blocks BLCK#1, ..., BLCK#9 define a contiguous part of the picture representation shown in Fig. 22.
  • a group of sections defining a contiguous part of the representation will be referred to hereinafter as a section group.
  • section groups define other contiguous parts of the representation in the subfile TV.
  • the coded picture lines with picture information for the subfiles TV/4 and TV/16 can be arranged in a similar way, as is shown in Figs. 23 and 24.
  • Fig. 25 shows the picture processing unit 141 in greater detail.
  • the picture processing unit 141 comprises a first detection circuit 250 for detecting the synchronization codes LD and the picture line numbers LN indicating the beginning of each residually coded picture line.
  • a second detection circuit 251 serves for detecting the beginning of each subfile in each picture file with a residually coded picture to indicate the beginning of the section IIDB containing the addresses of a number of coded picture lines. It is to be noted that the detection circuits 250 and 251 are needed only for processing the residually coded pictures and not for processing absolutely coded pictures. For the purpose of these detections inputs of the first and the second detection circuit 250 and 251 are connected to the signal path 142.
  • a decoding circuit 252 for decoding the residually coded picture information and a control circuit 253 for controlling the picture processing operation are connected to the signal path 142.
  • the signal path 142 and outputs of the decoding circuit 252 are connected to data inputs of a picture memory 255 via a multiplex circuit 254, to store the read and decoded picture information.
  • Data outputs of the picture memory 255 are connected to the inputs of the decoding circuit 252 and to the inputs of the multiplex circuit 254.
  • the control circuit 253 comprises an address generator 256 for addressing the memory locations in the picture memory 255.
  • the picture processing unit 141 further comprises a second address generator 257 for addressing the memory locations in order to output the content of the picture memory to a signal converter 258.
  • the signal converter 258 is of a customary type which converts the picture information read from the picture memory 255 into a form suitable for application to the picture display unit 10.
  • the decoding circuit 252 may comprise, for example, a Huffman decoding circuit 261a controlled by the control unit 253 and an adder circuit 259.
  • the Huffman decoding circuit 261a decodes the information received via the signal path 142 and subsequently supplies this decoded information to one of the inputs of the adder circuit 259.
  • Another input of the adder circuit 259 is connected to the data outputs of the picture memory 255.
  • the result of the adding operation performed by the adder circuit 259 is applied to the multiplex circuit 254.
  • the control circuit 253 is coupled to the control unit 140 via a control signal path 260.
  • the control circuit 253 may comprise, for example, a programmable control and computing unit.
  • a control and computing unit may comprise, for example, a dedicated hardware unit or a microprocessor system loaded with suitable control software, by means of which on the basis of control commands received via the control signal path 260 the address generator 256 and the multiplex circuit 254 are controlled in such a way that a selected portion of the picture information applied via the signal path 142 is loaded into the picture memory.
  • the information thus stored in the picture memory 255 is read with the aid of an address generator 257 and is subsequently applied to the display unit 10 via the signal converter 258 in order to be displayed.
  • the reference numerals 261, 262, 263 denote picture representations of the same picture but with different resolutions.
  • the representation 261 comprises 256 picture lines of 384 pixels each.
  • the representation 262 comprises 512 picture lines of 768 pixels each and the representation 263 comprises 1024 picture lines of 1536 pixels each.
  • the coded pictures corresponding to the representations 261, 262 and 263 are included in consecutive subfiles TV/4, TV and 4TV of a picture file IP.
  • the capacity of the picture memory 255 shown in Fig. 26 is 512 rows of 768 memory locations (also called memory elements).
  • a representation should represent the entire coded picture that subfile is selected from the picture file IP, whose number of pixels corresponds to the capacity of the picture memory, which in the present case is the subfile defining the representation 262.
  • This selection can be made on the basis of the setting data, such as picture numbers and resolution order (this is the identification of the subfile resolution), which are stored at the beginning of each subfile in, for example, the header HEAD and the subheader SUBHEAD of the blocks BLCK.
  • this data is read in by the control circuit 253 in response to a signal supplied by a block synchronization detector 262a upon detection of the beginning of each block BLCK.
  • the control circuit sets the multiplex circuit 254 to a state in which the signal path 142 is connected to the data inputs of the picture memory 255.
  • the address generator 256 is set to a state in which the memory locations are addressed in synchronism with the reception of the successive pixel information, in such a way that the information for the picture lines 11, ..., 1512 is stored in the respective rows rl, ..., r512 of the memory 255.
  • the picture information thus loaded into the memory 255 is read out and is converted into a form suitable for the display unit 10 by means of the signal converter 258.
  • the read-out sequence is determined by the sequence in which the address generator 257 generates the successive addresses. During normal reproduction this sequence is such that the memory is read in a row-by-row fashion, starting with the row rl and starting with column cl within a row. This is possible both in accordance with the interlaced-scan principle and the progressive-scan principle. In the case of read-out according to the interlaced-scan principle all the odd rows of the picture memory 255 are read first and subsequently all the even rows of the picture memory 255 are read. In the case of read-out in accordance with the progressive-scan principle all the rows are read in sequence.
  • a very attractive alternative for the method of storing the picture information in the picture memory 255 is that in which the picture memory 255 is first filled with picture information from a picture file defining a lower-resolution representation of a picture and subsequently the content of the memory is overwritten with a coded picture defining a higher-resolution representation of the same picture.
  • this is possible in that during read-out of each coded pixel from the subfile TV/4 each of a group of 2x2 memory elements is each time filled with the signal value defined by this coded pixel.
  • This method is known as the "spatial replica" method.
  • a better picture quality is obtained by filling only one of the memory elements of the 2x2 matrix with the signal value defined by a read-out pixel, and by deriving the other pixels of the 2x2 matrix from adjacent pixels by means of known inte ⁇ olation techniques. This method is known as the "spatial interpolation" method. After detection of the next subfile (in the present case TV) the content of the picture memory is each time overwritten with the picture information of this subfile in the methods described above. The amount of information in the subfile TV/4 is only a quarter of that in the subfile TV. This results in a substantial reduction of the time after which a first provisional picture is displayed on the display unit.
  • Figs. 27b, 27c and 27d illustrate how the picture information is stored in the memory for a rotation through an angle of 270, 180 and 90 degrees respectively. For the sake of clarity these Figures only show the positions of the information of the first two picture lines 11 and 12 of the picture.
  • the information of a part of the picture is selected.
  • the information of each pixel of the selected part is loaded into every memory location of a group of 2x2 memory locations, so that a magnified full-scan representation of low resolution is displayed on the display unit.
  • the memory may be filled in accordance with the spatial-interpolation principle mentioned in the foregoing. by means of which it is possible to read out the coded picture information recorded on the record carrier by means of the recording unit shown in Fig. 18.
  • the shown read unit 6 comprises a customary read head 280 which reads the information patterns on the record carrier 184 by scanning the track 20 and converts the resulting information into corresponding signals.
  • the read unit further comprises a customary positioning unit 284 for moving the read head 280 in a direction transverse to the tracks to a portion of the track 20 specified by a selected address.
  • the movement of the read head 283 is controlled by a control unit 285.
  • the signals converted by the read head 280 are decoded by an EFM decoding circuit 281 and are subsequently applied to a CIRC decoding circuit 282.
  • the CIRC decoding circuit 282 is of a customary type, which restores the original structure of the information which has been interleaved prior to recording and which detects and, if possible, corrects incorrectly read codes. Upon detection of incorrigible errors the CIRC decoding unit supplies a new error flag signal. The information which has been restored and corrected by the CIRC decoding circuit 282 is applied to a deformatting circuit 283 which removes the additional information added by the formatting circuit 186 prior to recording.
  • the EFM demodulating circuit 281, the CIRC decoding circuit 282, and the deformatting circuit 283 are controlled in a customary manner by the control unit 285. The information supplied by the deformatting circuit 283 is applied via an interface circuit 286.
  • the deformatting circuit may comprise an error correction circuit by means of which errors which cannot be corrected by the CIRC decoding circuit can be detected and corrected. This is effected by means of redundant information EDC & ECC added by the formatting circuit 166.
  • the error correction circuit which is comparatively complex and therefore comparatively expensive, is not necessary. This is because the effects of erroneeffected on the basis of the line numbers which together with the line synchronization codes LD have been inserted at the beginning of each coded picture line.
  • the control circuit reads in these line numbers LN in response to a signal from the detector circuit 251. The storage of the address information at the beginning of the subfile 4TV enables a rapid access to the desired information to be obtained.
  • Fig. 28 shows an embodiment of the read unit 6 by means of which it is possible to read out the coded picture information recorded on the record carrier by means of the recording unit shown in Fig. 18.
  • the shown read unit 6 comprises a customary read head 280 which reads the information patterns on the record carrier 184 by scanning the track 20 and converts the resulting information into corresponding signals.
  • the read unit further comprises a customary positioning unit 284 for moving the read head 280 in a direction transverse to the tracks to a portion of the track 20 specified by a selected address. The movement of the read head 283 is controlled by a control unit 285.
  • the signals converted by the read head 280 are decoded by an EFM decoding circuit 281 and are subsequently applied to a CIRC decoding circuit 282.
  • the CIRC decoding circuit 282 is of a customary type, which restores the the picture memory 255 a sample rate converter 290 of a customary type, which reducers the number of pixels per line from 786 to 512.
  • Fig. 31 shows an example of the sample rate converter 290.
  • the present example comprises a series arrangement of an upsampling and interpolation circuit 310 and a low-pass filter 311, and a downsampling and decimating circuit 312.
  • the use of the sample rate converter 290 enables a memory of 512 by 512 memory locations to be employed.
  • SincIRC decoding circuit 282, and the deformatting circuit 283 are controlled in a customary manner by the control unit 285.
  • the information supplied by the deformatting circuit 283 is applied via an interface circuit 286.
  • the deformatting circuit may comprise an error correction circuit by means of which errors which cannot be corrected by the CIRC decoding circuit can be detected and corrected. This is effected by means of redundant information EDC & ECC added by the formatting circuit 166.
  • the error correction circuit which is comparatively complex and therefore comparatively expensive, is not necessary.
  • the value in the memory 255 is not adapted upon detection of an incorrectly read residual value but remains unchanged. This can be achieved, for example, by causing the control circuit to generate a signal which inhibits writing into the memory 255 when the erroneous residual value is applied.
  • the capacity of the picture memory 255 is large, so that the cost price of such a memory is comparatively high.
  • the memory capacity may be reduced by arranging between the multiplexer 254 and the picture memory 255 a sample rate converter 290 of a customary type, which reducers the number of pixels per line from 786 to 512.
  • Fig. 31 shows an example of the sample rate converter 290.
  • the present example comprises a series arrangement of an upsampling and interpolation circuit 310 and a low-pass filter 311, and a downsampling and decimating circuit 312.
  • the use of the sample rate converter 290 enables a memory of 512 by 512 memory locations to be employed. Since for practical reasons the number of rows and the number of columns of memory locations in a memory are preferably powers of two, this yields a memory of particularly satisfactory dimensions. Moreover, as a result of the reduction of the number of memory locations to 512 per row the required memory read-out frequency is reduced, so that less stringent requirements have to be imposed on the read-out speed of the memories used.
  • the usually employed picture tubes have a maximum resolution corresponding to approximately 5 MHz, which corresponds to approximately 500 pixels per line, so that the reduction of the number of memory locations per row has no visible effects on the reproduced picture.
  • sample rate converter is also advantageous when portrait-format representations of pictures are to be displayed on a display screen, which will be explained hereinafter with reference to Figs. 30a, 30b, 30c and 30d.
  • the reference numeral 300 refers to the dimensions of a picture in accordance with the PAL TV standard.
  • a picture in accordance with the PAL TV standard comprises 575 useful picture lines.
  • a representation 301 of the coded picture in the picture memory fits completely within aspect ratio of the frame 300 as defined by the PAL TV standard, only a small part of the available display screen area being left unused.
  • the reference numeral 320 denotes a frame having the dimensions of a picture in accordance with the NTSC TV standard.
  • Such a picture in conformity with the NTSC TV standard comprises 431 useful lines. This means that only a limited part of a representation 303 of the coded picture present in the picture memory 255 falls outside the outline of a picture in accordance with the NTSC standard.
  • Figs. 30a and 30b concern landscape-format reproductions of representations of coded pictures.
  • the problem arises that the height of the picture corresponds to 768 pixels, the number of useful picture lines being 575 in accordance with the PAL TV standard and 485 in accordance with the NTSC TV standard.
  • a picture memory of 512 rows of memory locations is employed without the use of the sample rate converter 290 this would mean that a coded picture line does not fit in one memory column.
  • the sample rate converter 290 it is achieved that the coded picture lines of 768 coded pixels are converted into coded picture lines of 512 coded pixels, so that a coded picture line can be accommodated in one memory column. This means that during reproduction the height of the representation of the picture stored in the memory 255 substantially corresponds to the height of the picture frames defined in the PAL and NTSC TV standards.
  • a drawback of interpolation techniques is that they are comparatively intricate and time-consuming, so that they are less suited for use in the simplified picture retrieval and display system.
  • a method which yields pictures of satisfactory quality in a simple manner will be described hereinafter for the case that the picture memory comprises 512x512 memory locations. This method uses the subfile TV/4 with 384x256 coded pixels, instead of the subfile TV with 768x512 coded pixels, for loading the picture memory.
  • a sample rate converter 20 by means of which the number of pixels per read coded picture line can be reduced and increased, enables the number of pixels per read coded picture line of the subfile TV/4 to be increased from 384 to 512.
  • the 256 available adapted picture lines of 512 coded pixels each are loaded into the memory 255.
  • 256 columns of 512 memory locations each are filled with picture information.
  • Reading out this information yields an undistorted portrait-format representation, whose height substantially corresponds to the height of the display screen of a PAL or NTSC TV system, and whose quality is substantially better than that of a portrait-format representation obtained on the basis of a coded picture of 768x512 coded pixels whose width is adapted by using only half (256) the available number of 512 coded picture lines.
  • Fig. 30c shows a portrait-format representation 304 of the stored coded picture (of 256x512 coded pixels) thus obtained within the frame 300 defined by the PAL TV standard.
  • the entire representation falls within the frame defined by the PAL standard.
  • Fig. 30d by way of illustration shows a portrait-format representation of the coded picture thus stored.
  • the representation falls largely within the frame 302 defined by the NTSC TV standard.
  • a sample rate converter 290 enables the use of a picture memory having equal numbers of rows and columns and corresponding substantially to the number of useful picture lines in accordance with the NTSC or PAL standard. This means that both in the case of portrait-format and landscape-format representations of coded pictures the height of the representation substantially corresponds to the number of useful picture lines , so that the display screen will be filled correctly for representations of both formats.
  • the main data file described above contains picture information. It is to be noted that instead of picture information the main data file may alternatively contain main data of another kind, for example audio information.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

L'invention décrit un dispositif d'extraction et de reproduction d'informations, qui comprend une unité de lecture (110) qui lit un support d'enregistrement comportant un fichier de données principales et un fichier de données de commande contenant les réglages de reproduction préférentiels. Une unité de commande (101) commande la reproduction des informations principales pour qu'elle soit conforme aux réglages de reproduction préférentiels. Le dispositif comprend en outre un organe servant à lire les réglages de reproduction préférentiels dans au moins une mémoire additionnelle (105; 106), ainsi qu'un organe de sélection qui sélectionne si la commande de la reproduction par l'unité de commande s'effectue sur la base des réglages de reproduction préférentiels stockés sur le support d'enregistrement ou si elle se fait sur la base des réglages de reproduction préférentiels stockés dans la mémoire additionnelle.
PCT/NL1991/000170 1990-09-19 1991-09-13 Dispositif d'extraction et de reproduction d'informations WO1992005553A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE90202487.6 1990-09-13
EP90202487 1990-09-19
NL9002109A NL9002109A (nl) 1990-09-19 1990-09-27 Informatieopzoek- en weergaveinrichting.
NL9002109 1990-09-27

Publications (1)

Publication Number Publication Date
WO1992005553A1 true WO1992005553A1 (fr) 1992-04-02

Family

ID=26126010

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1991/000170 WO1992005553A1 (fr) 1990-09-19 1991-09-13 Dispositif d'extraction et de reproduction d'informations

Country Status (3)

Country Link
CN (1) CN1061503A (fr)
AU (1) AU8648591A (fr)
WO (1) WO1992005553A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0720121A2 (fr) * 1994-12-28 1996-07-03 Sharp Kabushiki Kaisha Unité de reproduction et de création d'informations
EP0997909A1 (fr) * 1998-10-30 2000-05-03 Koninklijke Philips Electronics N.V. Appareil de reproduction d'information numérique enregistrée sur un disque optique
EP0997910A1 (fr) * 1998-10-30 2000-05-03 Koninklijke Philips Electronics N.V. Appareil de reproduction d'information numérique enregistrée sur un disque optique
EP1667157A1 (fr) * 2004-12-06 2006-06-07 LG Electronics Inc. Procédé et appareil d'établissement de l'environnement d'un dispositif numérique utilisant une mémoire portable

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144292A (en) * 1982-04-16 1985-02-27 Victor Company Of Japan Digital video signal reproducing apparatus
WO1986001631A1 (fr) * 1984-08-24 1986-03-13 Eastman Kodak Company Appareil a disque video pour la restitution organisee d'images
GB2196506A (en) * 1986-09-20 1988-04-27 Pioneer Electronic Corp Programmed reproduction system for still picture recording/reproduction device
EP0265167A2 (fr) * 1986-10-15 1988-04-27 Pioneer Electronic Corporation Lecteur de disques avec magasin de disques
EP0322037A1 (fr) * 1987-12-21 1989-06-28 Koninklijke Philips Electronics N.V. Circuit de lecture d'information enregistrée sur un support d'enregistrement
US4872151A (en) * 1986-02-19 1989-10-03 Bennie C. Fulkerson Compact disc player capable of playing plural selections recorded on a compact disc in a preselected sequence
EP0346979A2 (fr) * 1988-06-15 1989-12-20 Koninklijke Philips Electronics N.V. Appareil de reproduction et/ou d'enregistrement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144292A (en) * 1982-04-16 1985-02-27 Victor Company Of Japan Digital video signal reproducing apparatus
WO1986001631A1 (fr) * 1984-08-24 1986-03-13 Eastman Kodak Company Appareil a disque video pour la restitution organisee d'images
US4872151A (en) * 1986-02-19 1989-10-03 Bennie C. Fulkerson Compact disc player capable of playing plural selections recorded on a compact disc in a preselected sequence
GB2196506A (en) * 1986-09-20 1988-04-27 Pioneer Electronic Corp Programmed reproduction system for still picture recording/reproduction device
EP0265167A2 (fr) * 1986-10-15 1988-04-27 Pioneer Electronic Corporation Lecteur de disques avec magasin de disques
EP0322037A1 (fr) * 1987-12-21 1989-06-28 Koninklijke Philips Electronics N.V. Circuit de lecture d'information enregistrée sur un support d'enregistrement
EP0346979A2 (fr) * 1988-06-15 1989-12-20 Koninklijke Philips Electronics N.V. Appareil de reproduction et/ou d'enregistrement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0720121A2 (fr) * 1994-12-28 1996-07-03 Sharp Kabushiki Kaisha Unité de reproduction et de création d'informations
EP0720121A3 (fr) * 1994-12-28 2000-05-31 Sharp Kabushiki Kaisha Unité de reproduction et de création d'informations
EP0997909A1 (fr) * 1998-10-30 2000-05-03 Koninklijke Philips Electronics N.V. Appareil de reproduction d'information numérique enregistrée sur un disque optique
EP0997910A1 (fr) * 1998-10-30 2000-05-03 Koninklijke Philips Electronics N.V. Appareil de reproduction d'information numérique enregistrée sur un disque optique
EP1667157A1 (fr) * 2004-12-06 2006-06-07 LG Electronics Inc. Procédé et appareil d'établissement de l'environnement d'un dispositif numérique utilisant une mémoire portable

Also Published As

Publication number Publication date
CN1061503A (zh) 1992-05-27
AU8648591A (en) 1992-04-15

Similar Documents

Publication Publication Date Title
EP0500913B1 (fr) Systeme comprenant un support d'enregistrement et un dispositif de lecture
US5835674A (en) Picture retrieval system, and record carrier and device for use in the system
CA2091166C (fr) Methode d'enregistrement d'images, support d'enregistrement et dispositif d'extraction et de reproduction d'images enregistrees
EP0500927B1 (fr) Systeme d'extraction d'images
EP0549688B1 (fr) Procede d'enregistrement d'informations d'image, support d'enregistrement, et dispositf d'extraction et de reproduction d'image utilise dans la lecture du support d'enregistrement
AU655944B2 (en) Read device
WO1992005553A1 (fr) Dispositif d'extraction et de reproduction d'informations
WO1992005653A1 (fr) Procede d'enregistrement d'images codees, support d'enregistrement sur lequel des images codees ont ete enregistrees, et dispositif d'extraction et de reproduction d'images utilisees pour lire le support d'enregistrement

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BB BG BR CA CS FI HU JP KP KR LK MC MG MW NO PL RO SD SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BF BJ CF CG CH CI CM DE DK ES FR GA GB GN GR IT LU ML MR NL SE SN TD TG

NENP Non-entry into the national phase

Ref country code: CA

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载