DE69516822D1 - Ver- und entschlüsselungsverfahren und -gerät für mehrkanalfernsehsystem - Google Patents

Ver- und entschlüsselungsverfahren und -gerät für mehrkanalfernsehsystem

Info

Publication number
DE69516822D1
DE69516822D1 DE69516822T DE69516822T DE69516822D1 DE 69516822 D1 DE69516822 D1 DE 69516822D1 DE 69516822 T DE69516822 T DE 69516822T DE 69516822 T DE69516822 T DE 69516822T DE 69516822 D1 DE69516822 D1 DE 69516822D1
Authority
DE
Germany
Prior art keywords
encryption
channels
television system
decryption method
television
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
DE69516822T
Other languages
English (en)
Inventor
Pablo Miliani
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.)
CALIFORNIA AMPLIFIER CAMARILLO
Original Assignee
CALIFORNIA AMPLIFIER CAMARILLO
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
Priority claimed from PCT/US1994/007694 external-priority patent/WO1995002944A1/en
Application filed by CALIFORNIA AMPLIFIER CAMARILLO filed Critical CALIFORNIA AMPLIFIER CAMARILLO
Application granted granted Critical
Publication of DE69516822D1 publication Critical patent/DE69516822D1/de
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
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • 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)
DE69516822T 1994-07-11 1995-07-11 Ver- und entschlüsselungsverfahren und -gerät für mehrkanalfernsehsystem Expired - Lifetime DE69516822D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/US1994/007694 WO1995002944A1 (en) 1993-07-12 1994-07-11 Encryption/decryption process and apparatus for a multichannel television system
US08/331,054 US5488659A (en) 1993-07-12 1994-10-28 Encryption/decryption process and apparatus for a multichannel television system
PCT/US1995/008721 WO1996002111A1 (en) 1994-07-11 1995-07-11 Encryption/decryption process and apparatus for a multichannel television system

Publications (1)

Publication Number Publication Date
DE69516822D1 true DE69516822D1 (de) 2000-06-15

Family

ID=26788321

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69516822T Expired - Lifetime DE69516822D1 (de) 1994-07-11 1995-07-11 Ver- und entschlüsselungsverfahren und -gerät für mehrkanalfernsehsystem

Country Status (5)

Country Link
EP (1) EP0717907B1 (de)
AT (1) ATE192890T1 (de)
AU (1) AU2969695A (de)
DE (1) DE69516822D1 (de)
WO (1) WO1996002111A1 (de)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914534A (en) * 1973-10-29 1975-10-21 Magnavox Co Methods and apparatus for scrambling and unscrambling premium television channels
US4330794A (en) * 1979-12-31 1982-05-18 Gte Automatic Electric Laboratories, Inc. Multichannel subscription television system
US4864613A (en) * 1986-11-10 1989-09-05 General Instrument Corporation Broadband converter/descrambler interface for cable TV
US5319709A (en) * 1991-06-13 1994-06-07 Scientific-Atlanta, Inc. System for broadband descrambling of sync suppressed television signals
ES2038913B1 (es) * 1991-10-02 1996-05-16 Iglesias Angel Sa Sistema de codificacion simultanea de varias señales de television y decodificacion de las mismas en radiofrecuencia.
SE9103493L (sv) * 1991-11-26 1993-03-29 Sweden On Line Ab Anordning vid dekodrar i tv-system
EP1553776A1 (de) * 1992-01-08 2005-07-13 Broadband Innovations, Inc. Mehrfachkanal mit Quadraturmodulation

Also Published As

Publication number Publication date
EP0717907A4 (de) 1996-09-11
AU2969695A (en) 1996-02-09
ATE192890T1 (de) 2000-05-15
EP0717907B1 (de) 2000-05-10
EP0717907A1 (de) 1996-06-26
WO1996002111A1 (en) 1996-01-25

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Legal Events

Date Code Title Description
8332 No legal effect for de