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WO2000046990A1 - Appareil et procede permettant de recevoir et de filtrer des programmes transmis - Google Patents

Appareil et procede permettant de recevoir et de filtrer des programmes transmis Download PDF

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Publication number
WO2000046990A1
WO2000046990A1 PCT/EP2000/000435 EP0000435W WO0046990A1 WO 2000046990 A1 WO2000046990 A1 WO 2000046990A1 EP 0000435 W EP0000435 W EP 0000435W WO 0046990 A1 WO0046990 A1 WO 0046990A1
Authority
WO
WIPO (PCT)
Prior art keywords
topic
programs
program
format
descriptor
Prior art date
Application number
PCT/EP2000/000435
Other languages
English (en)
Inventor
Marcelle A. Stienstra
Petrus G. Meuleman
Original Assignee
Koninklijke Philips Electronics N.V.
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
Application filed by Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Priority to JP2000597954A priority Critical patent/JP2002536924A/ja
Priority to EP00903596A priority patent/EP1066720A1/fr
Publication of WO2000046990A1 publication Critical patent/WO2000046990A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/454—Content or additional data filtering, e.g. blocking advertisements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • H04N21/4828—End-user interface for program selection for searching program descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/84—Generation or processing of descriptive data, e.g. content descriptors

Definitions

  • the invention relates to an apparatus for receiving a plurality of programs, comprising data decoder means for receiving program information related to at least one respective program of said plurality of programs.
  • the invention further relates to an apparatus for transmitting a plurality of programs, comprising data generator means for transmitting program information related to at least one respective program of said plurality of programs
  • the invention further relates to a method of transmitting a plurality of programs, comprising a step of transmitting program information related to at least one respective program of said plurality of programs.
  • the invention further relates to a method of receiving a plurality of programs, comprising a step of receiving program information related to at least one respective program of said plurality of programs.
  • TVs enable a user to restrict the information presented by an electronic program guide (EPG) to programs of a specific category.
  • EPG electronic program guide
  • Information about a program's category may be supplied by the content provider, e.g. included in a dedicated teletext page or as part of the service information (SI) of a digital broadcast stream. It is important to classify the content of a tv program in a short way. Usually a topic or genre descriptor is used for this.
  • the apparatus is characterized in that the data decoder means are adapted to extract from said program information a format descriptor representative of a format of said respective program, for example movie or magazine, and a topic descriptor representative of a topic of said respective program, for example sport or politics.
  • the data decoder means are adapted to extract from said program information a format descriptor representative of a format of said respective program, for example movie or magazine, and a topic descriptor representative of a topic of said respective program, for example sport or politics.
  • a further embodiment of the apparatus according to the invention comprises format selection means for selecting a first subset of said plurality of programs in accordance with a first user-supplied condition upon said format descriptor, and topic selection means for selecting a second subset of said plurality of programs in accordance with a second user- supplied condition upon said topic descriptor.
  • This embodiment enables the user to select programs in accordance with a particular program format or in accordance with a particular topic.
  • the selected programs may be presented in an EPG. For example, the user could select only programs having a documentary format, irrespective of the topic of the programs. On the other hand, the user could select only programs dealing with crime, irrespective of the format of the programs.
  • a further embodiment of the apparatus according to the invention comprises intersection means for creating a third subset of said plurality of programs by selecting programs which are common to the first and second subset. In this way the user is enabled to select programs which comply with conditions upon both the format descriptor and the topic descriptor.
  • the invention thus provides a very easy way of accurately selecting programs.
  • the program information includes multiple topic descriptors. Generally, the format of a program is uniquely defined and does not change in the course of the program, but several topics may be dealt with in one program. By allowing multiple topic descriptors, such programs can be described properly, which again leads to improved means for filtering the receivable programs.
  • the topic descriptor comprises an ordered list of topic subdescriptors, each of said topic subdescriptors being more general than the succeeding topic subdescriptor and being logically implied by said succeeding topic subdescriptor.
  • the list may still be rather large. Therefore the description of the genre of a program could be structured into multiple layers, e.g. the three layers Area, Genre and Sub-genre. This makes it possible to still provide information if a detailed choice is not possible. If, for example, a certain sport is not in the list it is still possible to say that it is a sport. Since the list is subject to changes in, for example, fashion, culture or viewing habits, the list could be made adaptable (note however, that changes in the two highest levels will be rather infrequent).
  • the invention is particularly suitable for radio and television receivers and settop-boxes.
  • Figure 1 shows a diagram of a television transmitter and receiver as an embodiment of the apparatuses according to the invention
  • Figure 2 shows a more detailed diagram of a digital television receiver as an embodiment of the apparatus according to the invention.
  • FIG. 1 shows a diagram of a television transmitter 1 and television receiver 2 as an embodiment of the apparatuses according to the invention.
  • the transmitter 1 comprises a content database 3, containing the audio and video content of television programs.
  • the transmitter 1 further includes a format information database 4 and a topic information database 5, containing information about, respectively, the format and topics of the programs in the content database 3.
  • the information for the format information database 4 and the topic information database 5 is entered by an operator by means of input means 8.
  • a data generator 6 combines and codes the information from the format information database 4 and the topic information database 5.
  • An adder circuit 7 combines the audio/video signals from the content database 3 and the information from the data generator 6 into a broadcast signal, which is transmitted through the atmosphere or a network 16.
  • the television receiver 2 comprises a separator circuit 10 which is capable of separating the audio/video signals and the additional information generated by the data generator 6.
  • the audio/video information is further processed by the signal processor 11 to be presented on a presentation device (not shown in figure 1).
  • the additional information is decoded by a data decoder 12 and stored in a format information database 13 and a topic information database 14.
  • a program selector 15 is capable of filtering information related to receivable programs, using information from databases 14 and 15, for example to be presented to the user in an EPG by means of the signal processor 11.
  • Figure 2 shows a more detailed block diagram of the television receiver 2.
  • Digital broadcast streams modulated upon radio frequency (RF) signals, are received from the ether by an antenna 21 or, alternatively, from a cable network.
  • the broadcast streams may be formatted, for example, in accordance with the Digital Video Broadcasting (DVB) standard.
  • a tuner 22 comprises a standard analog RF receiving device which is capable of receiving said RF signals and selecting one of them to be output to a demodulator 23. Which signal tuner 22 selects is dependent upon control data received from a central processing unit (CPU) 25.
  • the demodulator 23 converts the analog signal into a digital packet stream, based on control signals received from the CPU 25. This packet stream is then output to a demultiplexer 24, which selects packets belonging to a particular program in accordance with control data received from the CPU 25, and decomposes the packet stream into elementary video, audio or data streams.
  • the packet stream is output from demodulator 23 directly to the CPU 25.
  • the CPU 25 performs the tasks of the demultiplexer 24, thereby eliminating the need for the demultiplexer 24.
  • a video processor 28 decodes the video stream received from the demultiplexer
  • the video processor 28 is an MPEG-2 decoder; however, any decoder may be used as long as the decoder is compatible with the type of coding used to code the video data.
  • Decoded video data is then transmitted to a display screen 29.
  • An audio processor 26 decodes the audio stream received from the demultiplexer 24. Again, any decoder may be used as long as the decoder is compatible with the type of coding used to code the audio data. Decoded audio data is then transmitted to a speaker system 27.
  • the demultiplexer 24 outputs the elementary data stream to the CPU 15.
  • the elementary data stream has two types of data: control data and content data.
  • Content refers to, e.g., interactive programs;
  • control refers to tables in the multiplex which specify matters like the structure of the multiplex, the (RF) frequencies at which the channels are modulated, and the addresses where the various content components and the (other) tables in the multiplex can be found.
  • the CPU 25 comprises one or more microprocessors capable of executing program instructions retrieved from a read-only memory (ROM) 32.
  • These program instructions comprise parts of software modules including, inter alia, a command module 33, an EPG module 34, a format filter 35 (embodying the format selection means), a topic filter 36 (embodying the topic selection means) and a filter combination module 37 (embodying the intersection means).
  • Data processed by said software modules e.g. DVB-SI data and user profile information, may be stored in a non- volatile memory 31.
  • the command module 33 is capable of controlling functions of the TV-set, like tuning, and transmitting data to the video processor 28 to be displayed on the screen 29.
  • a user command unit 30 receives user commands, e.g. through a remote control (not shown), and transmits them to the command module 33 to be processed.
  • the command module 33 controls the tuner 22 and the demultiplexer 24 to select the corresponding broadcast stream and data packets therein, and sends graphical data to the video processor 28 to present feedback on the screen 29, e.g. the preset number, the channel name being displayed for a few seconds.
  • Digital broadcast streams comprise information for describing the structure of the broadcast stream and generating navigation user-interfaces.
  • a DVB broadcast stream comprises Program Specific Information (PSI, part of the MPEG specifications) and SI information, necessary, inter alia, for decoding the program information and generating an electronic program guide. Specifications of the DVB standard are widely available and well known to those of ordinary skill in the art.
  • the EPG module 34 interprets the DVB-SI data received from the demultiplexer 24 to collect information about the programs available in the received broadcast streams.
  • the format filter 35 extracts from this information the format descriptors specifying the format of the various programs. In response to conditions supplied by the user by means of the user command unit 30, the format filter 35 selects only the information pertaining to the programs whose format meets said conditions.
  • the format filter 35 selects the information pertaining to movies, irrespective of their topic.
  • the topic filter 36 extracts from the EPG information the topic descriptors specifying the topic(s) of the various programs.
  • the selections obtained by means of the format filter 35 and the topic filter 36 may be combined by means of the filter combination module 37, preferably by making an intersection of the two selections. The resultant selections may be further processed by the EPG module 34.
  • the format descriptor and the topic descriptor may take values from a predefined set of values corresponding to various formats and topics respectively. These sets of values may be defined in many ways, differ in the number of values and possibly in the number of layers.
  • a preferred embodiment of the format descriptor is shown in the following table:
  • topic descriptor comprising a three-layered structure
  • the three layers Area, Genre and Sub-genre make it possible to provide information even if a detailed choice is not possible. If, for example, a certain sport is not in the list it is still possible to say that it is a sport. Since the list is subject to changes in, for example, fashion, culture or viewing habits, the list could be made adaptable (note however, that changes in the two highest levels will be rather infrequent). Adding a new value to the list at a later stage could cause software not to recognise the new value. Therefore the higher levels always should be specified, not just the lowest level. For example, “Sports.SportsEvent.OlympicGames" instead of just “OlympicGames" even though the latter already is a unique value.
  • the invention relates to an apparatus and a method for transmitting or receiving programs.
  • additional data pertaining to the programs is transmitted or received.
  • the additional data comprises a format descriptor and a topic descriptor, which specify respectively a format of a program, for example movie or magazine, and a topic of said program, for example sports or politics.
  • the user is allowed to select programs in accordance with conditions upon the format descriptor and the topic descriptor. Further aspects of the invention are disclosed in the following Appendix.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)

Abstract

Cette invention concerne un appareil et un procédé qui permettent d'émettre ou de recevoir des programmes. Des données complémentaires concernant les programmes sont en outre transmises ou reçues en même temps que lesdits programmes. Ces données complémentaires comprennent un descripteur de format et un descripteur de sujet qui vont indiquer, respectivement, le format d'un programme, tel qu'un film ou un magasine, ainsi que le sujet dudit programme, par exemple du sport ou de la politique. L'utilisateur peut ainsi choisir les programmes en fonction des informations fournies par le descripteur de format et le descripteur de sujet.
PCT/EP2000/000435 1999-02-01 2000-01-20 Appareil et procede permettant de recevoir et de filtrer des programmes transmis WO2000046990A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000597954A JP2002536924A (ja) 1999-02-01 2000-01-20 送信された番組を受信しフィルタリングする装置及び方法
EP00903596A EP1066720A1 (fr) 1999-02-01 2000-01-20 Appareil et procede permettant de recevoir et de filtrer des programmes transmis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99200277 1999-02-01
EP99200277.4 1999-02-01

Publications (1)

Publication Number Publication Date
WO2000046990A1 true WO2000046990A1 (fr) 2000-08-10

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ID=8239852

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/000435 WO2000046990A1 (fr) 1999-02-01 2000-01-20 Appareil et procede permettant de recevoir et de filtrer des programmes transmis

Country Status (4)

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EP (1) EP1066720A1 (fr)
JP (1) JP2002536924A (fr)
KR (1) KR100766285B1 (fr)
WO (1) WO2000046990A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006135148A1 (fr) * 2005-06-15 2006-12-21 Alticast Co., Ltd. Procede selectif pour une chaine de television numerique
US8904461B2 (en) 2005-07-22 2014-12-02 Samsung Electronics Co., Ltd. Broadcast signal receiving device and method for executing data broadcasting application of the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0705036A2 (fr) * 1994-09-29 1996-04-03 Sony Corporation Système de diffusion d'information de programme, méthode d'affichage d'information de programme, et dispositif de réception
DE19645435A1 (de) * 1996-11-04 1998-05-20 Inst Rundfunktechnik Gmbh Rundfunkprogrammsignal sowie Verfahren zum Verarbeiten dieses Signals
US5809204A (en) * 1988-07-15 1998-09-15 Starsight Telecast, Inc. User interface for television schedule system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8120939U1 (de) * 1981-07-16 1981-11-26 SIEMENS AG AAAAA, 1000 Berlin und 8000 München Halte- und anschlussvorrichtung fuer einen scheibenfoermigen piezoelektrischen resonator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809204A (en) * 1988-07-15 1998-09-15 Starsight Telecast, Inc. User interface for television schedule system
EP0705036A2 (fr) * 1994-09-29 1996-04-03 Sony Corporation Système de diffusion d'information de programme, méthode d'affichage d'information de programme, et dispositif de réception
DE19645435A1 (de) * 1996-11-04 1998-05-20 Inst Rundfunktechnik Gmbh Rundfunkprogrammsignal sowie Verfahren zum Verarbeiten dieses Signals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006135148A1 (fr) * 2005-06-15 2006-12-21 Alticast Co., Ltd. Procede selectif pour une chaine de television numerique
US8904461B2 (en) 2005-07-22 2014-12-02 Samsung Electronics Co., Ltd. Broadcast signal receiving device and method for executing data broadcasting application of the same

Also Published As

Publication number Publication date
JP2002536924A (ja) 2002-10-29
EP1066720A1 (fr) 2001-01-10
KR100766285B1 (ko) 2007-10-11
KR20010042365A (ko) 2001-05-25

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