BR9103332A - Processo de protecao contra o desembaraco nao autorizado de emissoes de televisao embaracadas e dispositivo de colocacao em ecucao - Google Patents

Processo de protecao contra o desembaraco nao autorizado de emissoes de televisao embaracadas e dispositivo de colocacao em ecucao

Info

Publication number
BR9103332A
BR9103332A BR919103332A BR9103332A BR9103332A BR 9103332 A BR9103332 A BR 9103332A BR 919103332 A BR919103332 A BR 919103332A BR 9103332 A BR9103332 A BR 9103332A BR 9103332 A BR9103332 A BR 9103332A
Authority
BR
Brazil
Prior art keywords
embaracated
ecucioning
landing
against unauthorized
protection process
Prior art date
Application number
BR919103332A
Other languages
English (en)
Inventor
Michel Leduc
Original Assignee
Europ Rech Electr Lab
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 Europ Rech Electr Lab filed Critical Europ Rech Electr Lab
Publication of BR9103332A publication Critical patent/BR9103332A/pt

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
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
BR919103332A 1990-08-03 1991-08-02 Processo de protecao contra o desembaraco nao autorizado de emissoes de televisao embaracadas e dispositivo de colocacao em ecucao BR9103332A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9009969A FR2665602A1 (fr) 1990-08-03 1990-08-03 Procede de protection contre le desembrouillage non autorise d'emissions de television embrouillees et dispositif de mise en óoeuvre.

Publications (1)

Publication Number Publication Date
BR9103332A true BR9103332A (pt) 1992-05-26

Family

ID=9399415

Family Applications (1)

Application Number Title Priority Date Filing Date
BR919103332A BR9103332A (pt) 1990-08-03 1991-08-02 Processo de protecao contra o desembaraco nao autorizado de emissoes de televisao embaracadas e dispositivo de colocacao em ecucao

Country Status (6)

Country Link
US (1) US5204898A (pt)
EP (1) EP0469989A1 (pt)
JP (1) JPH04234286A (pt)
BR (1) BR9103332A (pt)
FR (1) FR2665602A1 (pt)
MX (1) MX9100463A (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2145552T3 (es) * 1997-12-18 2000-07-01 Europ Des Satellites Soc Procedimiento y dispositivo de determinacion de un punto de funcionamiento de un amplificador no-lineal de un canal de comunicacion.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521809A (en) * 1982-12-29 1985-06-04 North American Philips Corporation Method and apparatus for controlling access to selected television programs
FR2541841A1 (fr) * 1983-02-25 1984-08-31 Radiotechnique Dispositif de dechiffrement d'images de television brouillees par application aux signaux video de permutations circulaires
US4827510A (en) * 1986-02-24 1989-05-02 Trw Inc. Minimization of amplitude gaps in a line-spin scrambled video signal
FR2626131B1 (fr) * 1988-01-14 1990-06-22 Telediffusion Fse Procede et dispositif de permutation de lignes de television par bloc

Also Published As

Publication number Publication date
JPH04234286A (ja) 1992-08-21
US5204898A (en) 1993-04-20
FR2665602A1 (fr) 1992-02-07
MX9100463A (es) 1992-04-01
EP0469989A1 (fr) 1992-02-05

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Legal Events

Date Code Title Description
FD3 Appl. lapsed due to non-payment of renewal fee