IL82684A0 - Pay tv scrambling by audio encryption - Google Patents

Pay tv scrambling by audio encryption

Info

Publication number
IL82684A0
IL82684A0 IL82684A IL8268487A IL82684A0 IL 82684 A0 IL82684 A0 IL 82684A0 IL 82684 A IL82684 A IL 82684A IL 8268487 A IL8268487 A IL 8268487A IL 82684 A0 IL82684 A0 IL 82684A0
Authority
IL
Israel
Prior art keywords
scrambling
pay
audio encryption
encryption
audio
Prior art date
Application number
IL82684A
Other languages
English (en)
Original Assignee
Oak Industries 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 Oak Industries Inc filed Critical Oak Industries Inc
Publication of IL82684A0 publication Critical patent/IL82684A0/xx

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)
IL82684A 1986-06-05 1987-05-28 Pay tv scrambling by audio encryption IL82684A0 (en)

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
IL82684A0 true IL82684A0 (en) 1987-11-30

Family

ID=25356217

Family Applications (1)

Application Number Title Priority Date Filing Date
IL82684A IL82684A0 (en) 1986-06-05 1987-05-28 Pay tv scrambling by audio encryption

Country Status (8)

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

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
EP0248441A2 (de) 1987-12-09
JPS631274A (ja) 1988-01-06
DE3788372D1 (de) 1994-01-20
EP0248441B1 (de) 1993-12-08
US4688247A (en) 1987-08-18
CA1261961A (en) 1989-09-26
AU583189B2 (en) 1989-04-20
DE3788372T2 (de) 1994-03-24
JPH0531356B2 (de) 1993-05-12
EP0248441A3 (en) 1989-03-22
MX168593B (es) 1993-06-01
AU7335387A (en) 1987-12-10

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Legal Events

Date Code Title Description
RH Patent void