AU4645096A - Selective interdiction of television channels - Google Patents

Selective interdiction of television channels

Info

Publication number
AU4645096A
AU4645096A AU46450/96A AU4645096A AU4645096A AU 4645096 A AU4645096 A AU 4645096A AU 46450/96 A AU46450/96 A AU 46450/96A AU 4645096 A AU4645096 A AU 4645096A AU 4645096 A AU4645096 A AU 4645096A
Authority
AU
Australia
Prior art keywords
interdiction
selective
television channels
television
channels
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.)
Abandoned
Application number
AU46450/96A
Inventor
Yat Sen Lie
Pablo Miliani
David L. Petree
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 Co
Original Assignee
California Amplifier Co
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/US1995/008721 external-priority patent/WO1996002111A1/en
Application filed by California Amplifier Co filed Critical California Amplifier Co
Publication of AU4645096A publication Critical patent/AU4645096A/en
Abandoned 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
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central
    • 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
    • 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

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)
AU46450/96A 1995-07-11 1995-12-21 Selective interdiction of television channels Abandoned AU4645096A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/US1995/008721 WO1996002111A1 (en) 1994-07-11 1995-07-11 Encryption/decryption process and apparatus for a multichannel television system
WOUS9508721 1995-07-11
PCT/US1995/016827 WO1997003523A1 (en) 1995-07-11 1995-12-21 Selective interdiction of television channels

Publications (1)

Publication Number Publication Date
AU4645096A true AU4645096A (en) 1997-02-10

Family

ID=22249456

Family Applications (1)

Application Number Title Priority Date Filing Date
AU46450/96A Abandoned AU4645096A (en) 1995-07-11 1995-12-21 Selective interdiction of television channels

Country Status (6)

Country Link
EP (1) EP0806116A4 (en)
AP (1) AP896A (en)
AU (1) AU4645096A (en)
BR (1) BR9510615A (en)
OA (1) OA10754A (en)
WO (1) WO1997003523A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5125100A (en) * 1990-07-02 1992-06-23 Katznelson Ron D Optimal signal synthesis for distortion cancelling multicarrier systems
US5319709A (en) * 1991-06-13 1994-06-07 Scientific-Atlanta, Inc. System for broadband descrambling of sync suppressed television signals
DE69330946D1 (en) * 1992-01-08 2001-11-22 Broadband Innovations Inc MULTI-CHANNEL TELEVISION SIGNAL ENCRYPTION SYSTEM AND METHOD
US5278908A (en) * 1992-06-10 1994-01-11 Scientific-Atlanta, Inc. Interdiction method and apparatus with programmable jamming effectiveness
WO1993026126A1 (en) * 1992-06-10 1993-12-23 Scientific-Atlanta, Inc. Interdiction method and apparatus with frequency change inhibit function

Also Published As

Publication number Publication date
EP0806116A4 (en) 2000-06-28
OA10754A (en) 2002-12-11
WO1997003523A1 (en) 1997-01-30
BR9510615A (en) 1999-04-27
AP896A (en) 2000-11-17
EP0806116A1 (en) 1997-11-12

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