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FR2539938B1 - - Google Patents

Info

Publication number
FR2539938B1
FR2539938B1 FR8301069A FR8301069A FR2539938B1 FR 2539938 B1 FR2539938 B1 FR 2539938B1 FR 8301069 A FR8301069 A FR 8301069A FR 8301069 A FR8301069 A FR 8301069A FR 2539938 B1 FR2539938 B1 FR 2539938B1
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
FR8301069A
Other versions
FR2539938A1 (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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt 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 Thomson-Brandt SA filed Critical Thomson-Brandt SA
Priority to FR8301069A priority Critical patent/FR2539938A1/fr
Publication of FR2539938A1 publication Critical patent/FR2539938A1/fr
Application granted granted Critical
Publication of FR2539938B1 publication Critical patent/FR2539938B1/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
    • H04N7/1696—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)
  • Compression Or Coding Systems Of Tv Signals (AREA)
FR8301069A 1983-01-25 1983-01-25 Procede de protection du videosignal d'une emission de television notamment a peage et dispositif mettant en oeuvre un tel procede Granted FR2539938A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8301069A FR2539938A1 (fr) 1983-01-25 1983-01-25 Procede de protection du videosignal d'une emission de television notamment a peage et dispositif mettant en oeuvre un tel procede

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8301069A FR2539938A1 (fr) 1983-01-25 1983-01-25 Procede de protection du videosignal d'une emission de television notamment a peage et dispositif mettant en oeuvre un tel procede

Publications (2)

Publication Number Publication Date
FR2539938A1 FR2539938A1 (fr) 1984-07-27
FR2539938B1 true FR2539938B1 (fr) 1985-04-05

Family

ID=9285248

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8301069A Granted FR2539938A1 (fr) 1983-01-25 1983-01-25 Procede de protection du videosignal d'une emission de television notamment a peage et dispositif mettant en oeuvre un tel procede

Country Status (1)

Country Link
FR (1) FR2539938A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3584434D1 (de) * 1984-12-17 1991-11-21 Itt Videodekodiervorrictung.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431809A1 (fr) * 1978-07-20 1980-02-15 Telediffusion Fse Procedes et dispositifs de brouillage et de debrouillage pour images de television

Also Published As

Publication number Publication date
FR2539938A1 (fr) 1984-07-27

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Legal Events

Date Code Title Description
ST Notification of lapse