BR9510615A - Apparatus for encoding television channel signals selective method for encoding television channel signals and method of distributing multiple video signals and system for distributing multiple video signals - Google Patents

Apparatus for encoding television channel signals selective method for encoding television channel signals and method of distributing multiple video signals and system for distributing multiple video signals

Info

Publication number
BR9510615A
BR9510615A BR9510615A BR9510615A BR9510615A BR 9510615 A BR9510615 A BR 9510615A BR 9510615 A BR9510615 A BR 9510615A BR 9510615 A BR9510615 A BR 9510615A BR 9510615 A BR9510615 A BR 9510615A
Authority
BR
Brazil
Prior art keywords
television channel
multiple video
signals
distributing multiple
video signals
Prior art date
Application number
BR9510615A
Other languages
Portuguese (pt)
Inventor
Pablo Miliani
Davi I Petree
Yat Sem Lie
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/US1995/008721 external-priority patent/WO1996002111A1/en
Application filed by California Amplifier filed Critical California Amplifier
Publication of BR9510615A publication Critical patent/BR9510615A/en

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)
BR9510615A 1995-07-11 1995-12-21 Apparatus for encoding television channel signals selective method for encoding television channel signals and method of distributing multiple video signals and system for distributing multiple video signals BR9510615A (en)

Applications Claiming Priority (2)

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
PCT/US1995/016827 WO1997003523A1 (en) 1995-07-11 1995-12-21 Selective interdiction of television channels

Publications (1)

Publication Number Publication Date
BR9510615A true BR9510615A (en) 1999-04-27

Family

ID=22249456

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9510615A BR9510615A (en) 1995-07-11 1995-12-21 Apparatus for encoding television channel signals selective method for encoding television channel signals and method of distributing multiple video signals and system for distributing multiple video signals

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
AU693766B2 (en) * 1992-01-08 1998-07-09 Multichannel Communication Sciences, Inc. Multichannel television signal scrambling and descrambling system and method
WO1993026126A1 (en) * 1992-06-10 1993-12-23 Scientific-Atlanta, Inc. Interdiction method and apparatus with frequency change inhibit function
US5278908A (en) * 1992-06-10 1994-01-11 Scientific-Atlanta, Inc. Interdiction method and apparatus with programmable jamming effectiveness

Also Published As

Publication number Publication date
EP0806116A1 (en) 1997-11-12
OA10754A (en) 2002-12-11
AU4645096A (en) 1997-02-10
AP896A (en) 2000-11-17
WO1997003523A1 (en) 1997-01-30
EP0806116A4 (en) 2000-06-28

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Legal Events

Date Code Title Description
FB34 Technical and formal requirements: requirement - article 34 of industrial property law
FA14 Dismissal: dismissal - article 34 of industrial property law
B11T Dismissal of application maintained [chapter 11.20 patent gazette]