ES2071917T3 - Metodo y aparato para encriptar y desencriptar una señal de video. - Google Patents

Metodo y aparato para encriptar y desencriptar una señal de video.

Info

Publication number
ES2071917T3
ES2071917T3 ES91303663T ES91303663T ES2071917T3 ES 2071917 T3 ES2071917 T3 ES 2071917T3 ES 91303663 T ES91303663 T ES 91303663T ES 91303663 T ES91303663 T ES 91303663T ES 2071917 T3 ES2071917 T3 ES 2071917T3
Authority
ES
Spain
Prior art keywords
video signal
invested
signals
searches
encrypting
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES91303663T
Other languages
English (en)
Inventor
Kyung Jin Kang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
Gold Star 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 Gold Star Co Ltd filed Critical Gold Star Co Ltd
Application granted granted Critical
Publication of ES2071917T3 publication Critical patent/ES2071917T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Television Systems (AREA)

Abstract

UN METODO Y UN APARATO PARA CODIFICAR/DESCODIFICAR UNA SEÑAL DE VIDEO COMPUESTA. EL METODO INCLUYE LOS PASOS DE MULTIPLICAR UNA SEÑAL DE VIDEO COMPUESTA Y DIGITALIZADA POR UNA MATRIZ DE TRANSFORMACION DE UN FORMATO PREDETERMINADO PARA CODIFICARLOS EN BITS Y MULTIPLICAR LAS SEÑALES CODIFICADAS EN BITS POR UNA MATRIZ DEL INVERSO DEL FORMATO PREDETERMINADO PARA DESCODIFICARLOS EN SEÑALES DE VIDEO COMPUESTAS ORIGINALES. EL APARATO INCLUYE VARIOS MULTIPLEXORES ADAPTADOS PARA CODIFICAR Y DESCODIFICAR LA SEÑAL DE VIDEO COMPUESTA DIGITALIZADA COMO RESPUESTA A SEÑALES DE SELECCION EXTERNAS. LAS SEÑALES DE SELECCION EXTERNAS QUE SE APLICAN A LOS MULTIPLEXORES DE DESCODIFICADOR CONSISTEN EN SEÑALES DE COMPLEMENTO 2''5 EN SEÑALES APLICADAS A LOS MULTIPLEXORES EN EL CODIFICADOR. SEGUN EL PRESENTE METODO Y APARATO, SE PUEDE EVITAR CUALQUIER DETERIORO DE LA CALIDAD DE IMAGEN, EL AUMENTO DEL COSTE Y QUE SEA VISTA ILEGALMENTE POR NO-ABONADOS.
ES91303663T 1990-04-30 1991-04-24 Metodo y aparato para encriptar y desencriptar una señal de video. Expired - Lifetime ES2071917T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900006067A KR0152270B1 (ko) 1990-04-30 1990-04-30 유료 티브이 시스템의 합성 영상신호 암호화 해독 처리 시스템

Publications (1)

Publication Number Publication Date
ES2071917T3 true ES2071917T3 (es) 1995-07-01

Family

ID=19298511

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91303663T Expired - Lifetime ES2071917T3 (es) 1990-04-30 1991-04-24 Metodo y aparato para encriptar y desencriptar una señal de video.

Country Status (5)

Country Link
US (1) US5177786A (es)
EP (1) EP0455405B1 (es)
KR (1) KR0152270B1 (es)
DE (1) DE69109360T2 (es)
ES (1) ES2071917T3 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960015357B1 (ko) * 1993-07-16 1996-11-09 대우전자 주식회사 방송신호의 스크램블링/디스크램블링 통신장치 및 통신방법
US5533127A (en) * 1994-03-18 1996-07-02 Canon Information Systems, Inc. Encryption system
US6236727B1 (en) 1997-06-24 2001-05-22 International Business Machines Corporation Apparatus, method and computer program product for protecting copyright data within a computer system
US6498851B1 (en) 1998-11-25 2002-12-24 Sandisk Corporation Data encryption and signal scrambling using programmable data conversion arrays
US6687376B1 (en) * 1998-12-29 2004-02-03 Texas Instruments Incorporated High-speed long code generation with arbitrary delay
US7099472B2 (en) * 2000-07-20 2006-08-29 The Directv Group, Inc. Method and apparatus for securing digital video recording
JP2002202719A (ja) * 2000-11-06 2002-07-19 Sony Corp 暗号化装置及び方法、復号装置及び方法、並びに記憶媒体
CN100389612C (zh) * 2004-04-09 2008-05-21 南京大学 双工传输视频信号与控制数据的方法与装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1021053A (en) * 1973-10-31 1977-11-15 John Ross Picture transmission systems
US4318125A (en) * 1979-04-25 1982-03-02 Westinghouse Electric Corp. Solid state digital audio scrambler system for teletransmission of audio intelligence through a television system
US4821321A (en) * 1981-12-31 1989-04-11 The United States Of America As Represented By The Secretary Of The Army Automatic secure transmission and reception of pictorial information
US4599648A (en) * 1983-05-24 1986-07-08 Nec Corporation Video signal transmission systems
US4531024A (en) * 1983-10-25 1985-07-23 At&T Bell Laboratories Multilocation video conference terminal including video switching contention control
DE3580049D1 (de) * 1984-02-06 1990-11-08 British Broadcasting Corp Binaere pseudo-zufalls-reihengeneratoren.
DE3432653C1 (de) * 1984-09-05 1986-01-16 Westdeutscher Rundfunk, Anstalt des öffentlichen Rechts, 5000 Köln Verfahren zum Übertragen von Fersehprogrammen an berechtigte Teilnehmer
US4791594A (en) * 1986-03-28 1988-12-13 Technology Inc. 64 Random-access psuedo random number generator
IL78541A (en) * 1986-04-18 1989-09-28 Rotlex Optics Ltd Method and apparatus for encryption of optical images

Also Published As

Publication number Publication date
DE69109360D1 (de) 1995-06-08
DE69109360T2 (de) 1995-09-28
KR0152270B1 (ko) 1998-10-15
EP0455405A3 (en) 1992-09-30
KR910019448A (ko) 1991-11-30
EP0455405A2 (en) 1991-11-06
EP0455405B1 (en) 1995-05-03
US5177786A (en) 1993-01-05

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