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WO2006001645A1 - Procede de generation de donnee d'images animees avec format integre - Google Patents

Procede de generation de donnee d'images animees avec format integre Download PDF

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Publication number
WO2006001645A1
WO2006001645A1 PCT/KR2005/001956 KR2005001956W WO2006001645A1 WO 2006001645 A1 WO2006001645 A1 WO 2006001645A1 KR 2005001956 W KR2005001956 W KR 2005001956W WO 2006001645 A1 WO2006001645 A1 WO 2006001645A1
Authority
WO
WIPO (PCT)
Prior art keywords
format
video data
code
codec
header
Prior art date
Application number
PCT/KR2005/001956
Other languages
English (en)
Inventor
Sung Ryul Cho
Original Assignee
Udworks Co., Ltd.
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 Udworks Co., Ltd. filed Critical Udworks Co., Ltd.
Publication of WO2006001645A1 publication Critical patent/WO2006001645A1/fr

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • 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
    • H04N9/7921—Processing of colour television signals in connection with recording for more than one processing mode
    • 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

Definitions

  • the present invention relates to a method of generating motion picture data(or video data) in an integrated format, and more particularly, to a method of generating video data in an integrated format, in which a codec format in which a video signal is recorded is extracted from digital video data stored in various formats and the digital video data is converted and reproduced in a video data having a standard format.
  • Background Art Conventionally, a closed circuit television (CCTV) is used for unmanned monitoring in households, offices, factories, or government offices. Such a monitoring device is manufactured by connecting a camera to a coaxial cable such that an image captured by the camera is displayed on a monitor while the image is stored in a video recorder.
  • FIG. 1 is a block diagram illustrating the structure of a conventional DVR.
  • an analog-to-digital (AfD) converter 104 converts an image captured by a camera 102 into a digital signal
  • an encoder 106 compresses the digital signal from A/D converter to produce first video data.
  • the produced first video data is stored in a storage unit 108, such as a hard disc, a compact disc (CD), or a digital versatile disc (DVD), so that it can be semi ⁇ permanently stored and easily detected and reproduced.
  • An output unit 110 reads the first video data from the storage unit 108, decompresses it, decodes it into the original video signal, and displays it on a monitor, for example.
  • An image captured by a DVR is compressed to reduce the amount of the data.
  • a codec such as H.263, MPEGl, MPEG2, or MPEG4, is used to compress or reproduce data.
  • the MPEG4 has been widely used as a compression codec of video data, since it supports a transmission rate of data from lOKbps to IMbps, ex ⁇ pandability, editing of content, robustness to errors, a multimedia data access tool, and improved coding efficiency.
  • a compression codec in which video data is produced is different according to a manufacturing company of a DVR. Even if the same compression codec is used, it may be different from a format and a frame, such as a header, of video data. Accordingly, video produced using a DVR manufactured by one company cannot be reproduced by a DVR manufactured by another company.
  • the present invention provides a method of generating video data in an integrated format, in which a codec is extracted from first video data made by digital video recorders (DVRs) manufactured by different companies and second video data is produced in an integrated codec, thereby providing an integrated monitoring en ⁇ vironment under which video data can be reproduced using a DVR manufactured by a different manufacturing company from a DVR producing the video data.
  • DVRs digital video recorders
  • the present invention also provides a method of generating video data in an integrated format, in which when first video data includes a start code and an end code, a codec format is conveniently extracted by detecting the start and end codes.
  • the present invention also provides a method of generating video data in an integrated format, in which when first video data does not include a start code and an end code, image data is produced while decoding the first video data and second compressed video data is produced by encoding the produced image data.
  • Advantageous Effects [11] According to the present invention, a user who uses a security apparatus using a DVR is allowed to convert and reproduce video data in an integrated format, the video data being received from a plurality of DVRs installed in a plurality of spaces, the security of which must be guaranteed.
  • FlG. 1 is a block diagram of the structure of a conventional digital video recorder (DVR).
  • FlG. 2 is a block diagram of a DVR according to an embodiment of the present invention.
  • FlG. 3 illustrates constructions of first and second video data.
  • FlG. 4 is a flowchart illustrating a method of generating second video data according to an embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating a method of generating second video data according to another embodiment of the present invention.
  • Best Mode for Carrying Out the Invention [18]
  • DVR digital video recorder
  • the compressed video signal has an MPEG4 codec.
  • the ES code has an H.263 format
  • an image signal is generated by decoding the ES code
  • the compressed video signal is generated by encoding the image signal according in the MPEG4 codec.
  • the ES code has an MPEGl codec or an MPEG2 codec
  • the compressed video signal is generated by converting the format of the ES code in the MPEG4 codec through table mapping.
  • the start code is extracted from the ES code and converted into a standard start code.
  • FIG. 2 is a block diagram of the structure of a digital video recorder (DVR) according to an embodiment of the present invention. The construction of the DVR of FIG.
  • FIG. 2 is similar to that of a conventional DVR such as that shown in FIG. 1, except that second video data is produced by converting the format of first video data read from a storage unit 108 into a standard format.
  • FIG. 3 illustrates constructions of first and second video data according to an embodiment of the present invention.
  • the first video data is digital video data produced by a DVR, and the second video data is obtained by converting the format of the first video data into an integrated format.
  • the first video data includes a codec composed of a start code 202, a header 204, an end code 206, and an elementary stream (ES) code 208.
  • ES elementary stream
  • codec is an abbreviation of a compound word of a coder that converts an analog audio/video signal into a digital signal and a decoder that converts the digital signal into the audio/video signal. Also, the codec may denote a combination of a modulator and a demodulator, which converts and stores an image/music data into a computer readable language and interprets the language to reproduce the image/music data.
  • the start code 202 is a code indicating the start of the codec, which is determined according to the international standard.
  • the header 204 is an information data block located at a start point of a computer file to specify the name and size of a file, dates on which the file is made or changed, and so on.
  • the header 204 contains identification information and control information transmitted from a transmitting/receiving station for network commu ⁇ nications.
  • the form and format of the header 204 vary depending on a manufacturing company of the DVR that produces video data, and thus, the format must be converted into an integrated format so that video data can be reproduced by an integrated re ⁇ producing apparatus.
  • the end code 206 is a code indicating the end of the codec, which is determined according to the international standard, similar to the start code 202.
  • the ES code 208 contains a video signal captured by the DVR and is compressed by an encoding manner selected according to the manufacturing company of the DVR.
  • FIG. 4 is a flowchart illustrating a method of producing second video data according to an embodiment of the present invention. The method of FIG. 4 is applicable to a codec that includes start and end codes, particularly, when converting first video data that has a codec such as H.263, MPEGl, MPEG2, MPEG4, or standard MJPEG. [35] Referring to FIGS.
  • the compressed video signal 304 preferably has the MPEG4. Specifically, when the ES code 208 has the MPEGl codec or the MPEG2 codec, the ES code 208 is converted into an 'avi' file or an 'asf file through code table mapping. When the ES code 208 has the H.263 codec, the ES code 208 is decoded to generate an image signal, and then, the image signal is encoded in the MPEG4 codec to generate the compressed video signal 304. [38] When the ES code 208 has the MPEG4 codec, it is possible to generate the compressed video signal 304 just by converting the start code 202.
  • FIG. 5 is a flowchart illustrating a method of producing second video data according to another embodiment of the present invention. The method of FIG. 5 is applicable to conversion of first video data having a modified MJPEG format that does not include start and end codes, particularly, when converting video data produced by a DVR manufactured in Taiwan or China. [40] When the first video data has a codec format that does not include the start code 202 and the end code 206, the header 204 is detected and converted into the standard header 302(S202).
  • the ES code 208 included in the codec format is decoded to generate an image signal(S204).
  • the image signal is encoded in the MPEG4 codec to obtain the compressed video signal 304(S206).
  • the standard header 302 and the compressed video signal 304 are combined to produce the second video data (S208).
  • second video data that is produced by converting various video codec formats into the MPEG4 format and combining a standard header with a compressed video signal, is decoded using a dedicated viewer to be displayed as video. Accordingly, a user who uses a DVR is able to view the video on an output unit irrespective of the manufacturing company of the DVR.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

La présente invention concerne un procédé de production de données vidéo dans un format intégré par conversion du format des premières données vidéo reçues d'un enregistreur vidéo numérique (DVR). Ce procédé consiste à détecter un format codec contenant des informations vidéo des premières données vidéo et à détecter un code de départ du format codec, à détecter un en-tête du format codec et à transformer cet en-tête en en-tête standard, à détecter un code de fin du format codec, à détecter et à extraire un code de flux élémentaire (ES) du format codec, à générer un signal vidéo compressé par conversion du format du code ES et, à obtenir des deuxièmes données vidéo par combinaison de l'en-tête standard avec le signal vidéo compressé. Par conséquent, un utilisateur qui utilise un appareil sécurisé comprenant un DVR peut convertir et reproduire des données vidéo dans un format intégré, les données vidéo étant reçues d'une pluralité de DVR installés dans une pluralité d'espace, dont la sécurisation doit être garantie en un format intégré.
PCT/KR2005/001956 2004-06-25 2005-06-23 Procede de generation de donnee d'images animees avec format integre WO2006001645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2004-0048179A KR100463490B1 (ko) 2004-06-25 2004-06-25 통합 포맷을 가지는 동영상 데이터 생성방법
KR10-2004-0048179 2004-06-25

Publications (1)

Publication Number Publication Date
WO2006001645A1 true WO2006001645A1 (fr) 2006-01-05

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Country Status (2)

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KR (1) KR100463490B1 (fr)
WO (1) WO2006001645A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020110193A1 (en) * 2000-12-08 2002-08-15 Samsung Electronics Co., Ltd. Transcoding method and apparatus therefor
US20020196851A1 (en) * 2000-09-05 2002-12-26 Lecoutre Cedric Arnaud Method of converting video data streams
US6577767B2 (en) * 1999-02-25 2003-06-10 Sarnoff Corporation Transcoding using block-based motion vectors
US6647061B1 (en) * 2000-06-09 2003-11-11 General Instrument Corporation Video size conversion and transcoding from MPEG-2 to MPEG-4
US20050135486A1 (en) * 2003-12-18 2005-06-23 Daeyang Foundation (Sejong University) Transcoding method, medium, and apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6577767B2 (en) * 1999-02-25 2003-06-10 Sarnoff Corporation Transcoding using block-based motion vectors
US6647061B1 (en) * 2000-06-09 2003-11-11 General Instrument Corporation Video size conversion and transcoding from MPEG-2 to MPEG-4
US20020196851A1 (en) * 2000-09-05 2002-12-26 Lecoutre Cedric Arnaud Method of converting video data streams
US20020110193A1 (en) * 2000-12-08 2002-08-15 Samsung Electronics Co., Ltd. Transcoding method and apparatus therefor
US20050135486A1 (en) * 2003-12-18 2005-06-23 Daeyang Foundation (Sejong University) Transcoding method, medium, and apparatus

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KR100463490B1 (ko) 2004-12-30

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