ATE192890T1 - Ver- und entschlüsselungsverfahren und -gerät für mehrkanalfernsehsystem - Google Patents

Ver- und entschlüsselungsverfahren und -gerät für mehrkanalfernsehsystem

Info

Publication number
ATE192890T1
ATE192890T1 AT95925627T AT95925627T ATE192890T1 AT E192890 T1 ATE192890 T1 AT E192890T1 AT 95925627 T AT95925627 T AT 95925627T AT 95925627 T AT95925627 T AT 95925627T AT E192890 T1 ATE192890 T1 AT E192890T1
Authority
AT
Austria
Prior art keywords
encryption
channels
television system
decryption method
television
Prior art date
Application number
AT95925627T
Other languages
English (en)
Inventor
Pablo Miliani
Original Assignee
California Amplifier
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 filed Critical California Amplifier
Application granted granted Critical
Publication of ATE192890T1 publication Critical patent/ATE192890T1/de

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)
AT95925627T 1994-07-11 1995-07-11 Ver- und entschlüsselungsverfahren und -gerät für mehrkanalfernsehsystem ATE192890T1 (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
ATE192890T1 true ATE192890T1 (de) 2000-05-15

Family

ID=26788321

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95925627T ATE192890T1 (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
WO1993014597A1 (en) * 1992-01-08 1993-07-22 Katznelson Ron D Multichannel television signal scrambling and descrambling system and method

Also Published As

Publication number Publication date
EP0717907B1 (de) 2000-05-10
DE69516822D1 (de) 2000-06-15
EP0717907A4 (de) 1996-09-11
EP0717907A1 (de) 1996-06-26
AU2969695A (en) 1996-02-09
WO1996002111A1 (en) 1996-01-25

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