MX168593B - Demodulacion de la television de paga por encripcion del audio - Google Patents

Demodulacion de la television de paga por encripcion del audio

Info

Publication number
MX168593B
MX168593B MX006791A MX679187A MX168593B MX 168593 B MX168593 B MX 168593B MX 006791 A MX006791 A MX 006791A MX 679187 A MX679187 A MX 679187A MX 168593 B MX168593 B MX 168593B
Authority
MX
Mexico
Prior art keywords
channel
cryptographic
signal
audio signal
audio
Prior art date
Application number
MX006791A
Other languages
English (en)
Inventor
Mircho A Davidov
Original Assignee
Oci Communications Inc
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 Oci Communications Inc filed Critical Oci Communications Inc
Publication of MX168593B publication Critical patent/MX168593B/es

Links

Classifications

    • 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
    • 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
    • H04N21/4341—Demultiplexing of audio and video streams
    • 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
    • H04N21/439—Processing of audio elementary streams
    • 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
    • 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

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)

Abstract

La presente invención se refiere a en un sistema de distribución de T.V. por subscripción, una pluralidad de fuentes de canales de programas de T.V., cada una incluyendo una señal de video y una señal de audio criptografiada, dicha señal de audio criptografiada incluye un control criptografiado y datos de la dirección de los subscriptores; un eslabón de comunicaciones que conecta dicha pluralidad de fuentes con por lo menos un sitio de recepción que tiene los medios para recibir dicha pluralidad de canales de T.V., medios en dicho sitio de recepción para separar la señal de audio criptografiada en cada canal de la señal de video; medios en cada sitio de recepción para multicanalizar las señales de audio criptografiadas ya separadas en un solo canal conductor no-televisivo; medios para cada sitio de recepción que incluye una etiqueta de identidad con cada señal de video para utilizarse en seleccionar la señal de audio correspondiente de la pluralidad de señales de audio del dispositivo multicanalizador, y una pluralidad de subscriptores que estén en comunicación con dicho sitio de recepción para recibir una o más de dichas señales de video y de dichas señales de audio multicanalizadas, teniendo cada subscriptor los medios para separar a la etiqueta de la señal de video asociada y para utilizar la etiqueta separada para seleccionar la señal de audio criptografiada de entre las señales de audio multicanalizadas que correspondan a la etiqueta y a su señal de video asociada y los medios en el caso de cada subscriptor para descriptografiar la audio señal y el control incluido y también los datos sobre la dirección.
MX006791A 1986-06-05 1987-06-04 Demodulacion de la television de paga por encripcion del audio MX168593B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/870,866 US4688247A (en) 1986-06-05 1986-06-05 Pay TV scrambling by audio encryption

Publications (1)

Publication Number Publication Date
MX168593B true MX168593B (es) 1993-06-01

Family

ID=25356217

Family Applications (1)

Application Number Title Priority Date Filing Date
MX006791A MX168593B (es) 1986-06-05 1987-06-04 Demodulacion de la television de paga por encripcion del audio

Country Status (8)

Country Link
US (1) US4688247A (es)
EP (1) EP0248441B1 (es)
JP (1) JPS631274A (es)
AU (1) AU583189B2 (es)
CA (1) CA1261961A (es)
DE (1) DE3788372T2 (es)
IL (1) IL82684A0 (es)
MX (1) MX168593B (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
FR2623682A1 (fr) * 1987-11-24 1989-05-26 Cgv Comp Gen Videotech Grille de commutation
GB2231755B (en) * 1989-04-21 1993-10-06 Pioneer Electronic Corp Method for scrambling a television signal and method and apparatus for descrambling a scrambled television signal
JPH0717379B2 (ja) * 1990-06-07 1995-03-01 日本研磨材工業株式会社 高温耐熱性及び耐食性に優れた溶融ジルコニア耐火材料およびその製造方法並びに連続鋳造用ノズル
FR2704703B1 (fr) * 1993-04-28 1995-06-30 Gemplus Card Int Appareil d'exploitation de signaux electriques.
US5502767A (en) * 1994-05-27 1996-03-26 Sasuta; Michael Method for maintaining secure information synchronization on a control channel
US5710815A (en) * 1995-06-07 1998-01-20 Vtech Communications, Ltd. Encoder apparatus and decoder apparatus for a television signal having embedded viewer access control data
US5675511A (en) * 1995-12-21 1997-10-07 Intel Corporation Apparatus and method for event tagging for multiple audio, video, and data streams
KR19980040837A (ko) * 1996-11-29 1998-08-17 조희재 비화채널 수신방법
US6529602B1 (en) * 1997-08-19 2003-03-04 Walker Digital, Llc Method and apparatus for the secure storage of audio signals
US6633982B1 (en) * 1999-03-20 2003-10-14 Wayne Samuel Kurzeja Method and process for managing ultra secure electronic distribution of digital movies to commercial exhibitors

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4398216A (en) * 1980-09-19 1983-08-09 Telease, Inc. Multiple signal transmission method and system, particularly for television
US4621285A (en) * 1980-12-10 1986-11-04 Jerrold Division, General Instrument Corporation Protected television signal distribution system
US4471380A (en) * 1982-03-15 1984-09-11 Scientific-Atlanta, Inc. Scrambling and descrambling of television signals for subscription TV
US4410911A (en) * 1982-07-14 1983-10-18 Telease, Inc. Multiple signal transmission method and system, particularly for television
US4531020A (en) * 1982-07-23 1985-07-23 Oak Industries Inc. Multi-layer encryption system for the broadcast of encrypted information
US4603349A (en) * 1984-12-04 1986-07-29 General Instrument Corporation Cable television system with stereo sound reproduction

Also Published As

Publication number Publication date
AU583189B2 (en) 1989-04-20
EP0248441B1 (en) 1993-12-08
JPS631274A (ja) 1988-01-06
JPH0531356B2 (es) 1993-05-12
EP0248441A2 (en) 1987-12-09
DE3788372D1 (de) 1994-01-20
DE3788372T2 (de) 1994-03-24
AU7335387A (en) 1987-12-10
IL82684A0 (en) 1987-11-30
US4688247A (en) 1987-08-18
EP0248441A3 (en) 1989-03-22
CA1261961A (en) 1989-09-26

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