FR2524241B1 - - Google Patents

Info

Publication number
FR2524241B1
FR2524241B1 FR8205007A FR8205007A FR2524241B1 FR 2524241 B1 FR2524241 B1 FR 2524241B1 FR 8205007 A FR8205007 A FR 8205007A FR 8205007 A FR8205007 A FR 8205007A FR 2524241 B1 FR2524241 B1 FR 2524241B1
Authority
FR
France
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
FR8205007A
Other languages
French (fr)
Other versions
FR2524241A1 (fr
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.)
Radiotechnique SA
Original Assignee
Radiotechnique SA
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 Radiotechnique SA filed Critical Radiotechnique SA
Priority to FR8205007A priority Critical patent/FR2524241A1/fr
Publication of FR2524241A1 publication Critical patent/FR2524241A1/fr
Application granted granted Critical
Publication of FR2524241B1 publication Critical patent/FR2524241B1/fr
Granted 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)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
FR8205007A 1982-03-24 1982-03-24 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 Granted FR2524241A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8205007A FR2524241A1 (fr) 1982-03-24 1982-03-24 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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8205007A FR2524241A1 (fr) 1982-03-24 1982-03-24 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

Publications (2)

Publication Number Publication Date
FR2524241A1 FR2524241A1 (fr) 1983-09-30
FR2524241B1 true FR2524241B1 (OSRAM) 1984-05-04

Family

ID=9272336

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8205007A Granted FR2524241A1 (fr) 1982-03-24 1982-03-24 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

Country Status (1)

Country Link
FR (1) FR2524241A1 (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2562365B1 (fr) * 1984-03-30 1988-02-05 Loire Electro Region Pays Circuits de codage et de decodage d'un signal video code par un decalage du signal d'image par rapport au signal de synchronisation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961481A (en) * 1954-12-30 1960-11-22 Hammond Secrecy television
US3689688A (en) * 1970-11-02 1972-09-05 Skiatron Elect & Tele Communications secrecy system
US3717206A (en) * 1970-11-02 1973-02-20 Skiatron Elect & Tele Scrambled television
NL7016628A (OSRAM) * 1970-11-13 1972-05-16
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
US4215366A (en) * 1977-10-19 1980-07-29 Feature Film Services Subscriber-limited reception television broadcast security encoder-decoder system

Also Published As

Publication number Publication date
FR2524241A1 (fr) 1983-09-30

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Legal Events

Date Code Title Description
TP Transmission of property
CD Change of name or company name
CD Change of name or company name