SE9202779L - System foer samtidig kodning av ett antal televisionssignaler och avkodning fraan radiofrekvens - Google Patents

System foer samtidig kodning av ett antal televisionssignaler och avkodning fraan radiofrekvens

Info

Publication number
SE9202779L
SE9202779L SE9202779A SE9202779A SE9202779L SE 9202779 L SE9202779 L SE 9202779L SE 9202779 A SE9202779 A SE 9202779A SE 9202779 A SE9202779 A SE 9202779A SE 9202779 L SE9202779 L SE 9202779L
Authority
SE
Sweden
Prior art keywords
television signals
channel
application
decodation
systems
Prior art date
Application number
SE9202779A
Other languages
English (en)
Other versions
SE9202779D0 (sv
Inventor
Ricardo Reolid Lopez
Emilio Diez Follente
Jose Luis Carmona Garcia
Jesus Javier Fernandez Vinuesa
Original Assignee
Emilio Diez Follente
Jesus Javier Fernandez Vinuesa
Jose Luis Carmona Garcia
Ricardo Reolid Lopez
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 Emilio Diez Follente, Jesus Javier Fernandez Vinuesa, Jose Luis Carmona Garcia, Ricardo Reolid Lopez filed Critical Emilio Diez Follente
Publication of SE9202779D0 publication Critical patent/SE9202779D0/sv
Publication of SE9202779L publication Critical patent/SE9202779L/sv

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)
  • Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
SE9202779A 1991-10-02 1992-09-25 System foer samtidig kodning av ett antal televisionssignaler och avkodning fraan radiofrekvens SE9202779L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES09102165A ES2038913B1 (es) 1991-10-02 1991-10-02 Sistema de codificacion simultanea de varias señales de television y decodificacion de las mismas en radiofrecuencia.

Publications (2)

Publication Number Publication Date
SE9202779D0 SE9202779D0 (sv) 1992-09-25
SE9202779L true SE9202779L (sv) 1993-04-03

Family

ID=8273690

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9202779A SE9202779L (sv) 1991-10-02 1992-09-25 System foer samtidig kodning av ett antal televisionssignaler och avkodning fraan radiofrekvens

Country Status (7)

Country Link
US (1) US5319708A (sv)
CA (1) CA2079514A1 (sv)
DE (1) DE4233114A1 (sv)
ES (1) ES2038913B1 (sv)
FR (1) FR2684832A1 (sv)
GB (1) GB2260247B (sv)
SE (1) SE9202779L (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5682426A (en) * 1993-07-12 1997-10-28 California Amplifier Subscriber site method and apparatus for decoding and selective interdiction of television channels
WO1996002111A1 (en) * 1994-07-11 1996-01-25 California Amplifier Encryption/decryption process and apparatus for a multichannel television system
US6574981B2 (en) * 2001-09-24 2003-06-10 Lancer Partnership, Ltd. Beverage dispensing with cold carbonation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1155518A (en) * 1979-02-20 1983-10-18 William S.H. Cheung Encoding of information
JPS6016082A (ja) * 1983-07-07 1985-01-26 Sony Corp スクランブルテレビジヨン信号の伝送方式
US4679078A (en) * 1983-11-15 1987-07-07 Luks Industrial Company Ltd. High security subscription television transmission system
US4636852A (en) * 1984-01-26 1987-01-13 Scientific-Atlanta, Inc. Scrambling and descrambling of television signals for subscription TV
US4598313A (en) * 1984-10-31 1986-07-01 Zenith Electronics Corporation Television signal scrambling system
WO1986005647A1 (en) * 1985-03-15 1986-09-25 Zenith Electronics Corporation Television signal scrambling and data transmission system
EP0341801A3 (en) * 1985-10-29 1990-02-07 Payview Limited Video scrambling systems
DE3752343T2 (de) * 1986-04-18 2002-08-14 Nagra Plus Sa Bezahlfernsehsystem
CA1292056C (en) * 1987-09-07 1991-11-12 Masatoshi Tanaka Video signal scrambling system
FR2621204B1 (fr) * 1987-09-24 1994-07-01 Aeta Procede et dispositif de cryptage/decryptage analogique d'un signal video analogique
US4914694A (en) * 1988-04-11 1990-04-03 Eidak Corporation Modifying a television signal to inhibit recording/reproduction

Also Published As

Publication number Publication date
DE4233114A1 (de) 1993-06-09
GB2260247A (en) 1993-04-07
ES2038913A2 (es) 1993-08-01
FR2684832B1 (sv) 1994-12-23
CA2079514A1 (en) 1993-04-03
GB9220589D0 (en) 1992-11-11
SE9202779D0 (sv) 1992-09-25
ES2038913R (sv) 1995-11-16
ES2038913B1 (es) 1996-05-16
FR2684832A1 (fr) 1993-06-11
GB2260247B (en) 1995-03-15
US5319708A (en) 1994-06-07

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