FR1257193A - Télévision chiffrée - Google Patents

Télévision chiffrée

Info

Publication number
FR1257193A
FR1257193A FR818944A FR818944A FR1257193A FR 1257193 A FR1257193 A FR 1257193A FR 818944 A FR818944 A FR 818944A FR 818944 A FR818944 A FR 818944A FR 1257193 A FR1257193 A FR 1257193A
Authority
FR
France
Prior art keywords
encrypted
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
FR818944A
Other languages
English (en)
Inventor
Jean-Claude Levy
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 filed Critical
Priority to FR818944A priority Critical patent/FR1257193A/fr
Application granted granted Critical
Publication of FR1257193A publication Critical patent/FR1257193A/fr
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
    • H04N7/1696—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)
FR818944A 1960-02-18 1960-02-18 Télévision chiffrée Expired FR1257193A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR818944A FR1257193A (fr) 1960-02-18 1960-02-18 Télévision chiffrée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR818944A FR1257193A (fr) 1960-02-18 1960-02-18 Télévision chiffrée

Publications (1)

Publication Number Publication Date
FR1257193A true FR1257193A (fr) 1961-03-31

Family

ID=8725460

Family Applications (1)

Application Number Title Priority Date Filing Date
FR818944A Expired FR1257193A (fr) 1960-02-18 1960-02-18 Télévision chiffrée

Country Status (1)

Country Link
FR (1) FR1257193A (fr)

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