DE3565200D1 - Circuit for coding and decoding a video signal coded by shifting the image signal relative to the synchronising signal - Google Patents

Circuit for coding and decoding a video signal coded by shifting the image signal relative to the synchronising signal

Info

Publication number
DE3565200D1
DE3565200D1 DE8585400590T DE3565200T DE3565200D1 DE 3565200 D1 DE3565200 D1 DE 3565200D1 DE 8585400590 T DE8585400590 T DE 8585400590T DE 3565200 T DE3565200 T DE 3565200T DE 3565200 D1 DE3565200 D1 DE 3565200D1
Authority
DE
Germany
Prior art keywords
signal
decoding
shifting
coding
circuit
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.)
Expired
Application number
DE8585400590T
Other languages
English (en)
Inventor
Jean-Claude Guillon
Jean-Yves Maheo
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.)
Societe dElectronique de la Region Pays de Loire
Original Assignee
Societe dElectronique de la Region Pays de Loire
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 Societe dElectronique de la Region Pays de Loire filed Critical Societe dElectronique de la Region Pays de Loire
Application granted granted Critical
Publication of DE3565200D1 publication Critical patent/DE3565200D1/de
Expired 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
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1693—Systems operating in the time domain of the television signal by displacing synchronisation signals relative to active picture signals or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE8585400590T 1984-03-30 1985-03-26 Circuit for coding and decoding a video signal coded by shifting the image signal relative to the synchronising signal Expired DE3565200D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8405043A FR2562365B1 (fr) 1984-03-30 1984-03-30 Circuits de codage et de decodage d'un signal video code par un decalage du signal d'image par rapport au signal de synchronisation

Publications (1)

Publication Number Publication Date
DE3565200D1 true DE3565200D1 (en) 1988-10-27

Family

ID=9302658

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585400590T Expired DE3565200D1 (en) 1984-03-30 1985-03-26 Circuit for coding and decoding a video signal coded by shifting the image signal relative to the synchronising signal

Country Status (3)

Country Link
EP (1) EP0160595B1 (de)
DE (1) DE3565200D1 (de)
FR (1) FR2562365B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634085A1 (fr) * 1988-07-06 1990-01-12 Radiotechnique Ind & Comm Dispositif d'embrouillage ou de desembrouillage pour un systeme de television mac
FR2637757B1 (fr) * 1988-10-11 1990-11-16 Cit Alcatel Procede et dispositif de recalibrage des salves de chrominance d'un signal video de television couleur
EP0673163A1 (de) * 1993-04-05 1995-09-20 South African Micro-Electronic Systems (Proprietary) Limited Verfahren und Vorrichtung zur Kodierung und Dekodierung von Signalen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074307A (en) * 1975-08-14 1978-02-14 Rca Corporation Signal processor using charge-coupled devices
FR2330236A1 (fr) * 1975-11-03 1977-05-27 France Etat Un procede de cryptage et de decryptage d'emissions de television et des circuits mettant en oeuvre ce procede
FR2524241A1 (fr) * 1982-03-24 1983-09-30 Radiotechnique Circuit de commande du dispositif de decryptage d'un systeme de transmission d'emissions de television cryptees et systeme de transmission d'emissions cryptees comportant un tel circuit

Also Published As

Publication number Publication date
FR2562365A1 (fr) 1985-10-04
EP0160595A1 (de) 1985-11-06
FR2562365B1 (fr) 1988-02-05
EP0160595B1 (de) 1988-09-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee