FR1459273A - Method and devices for transmitting and receiving television broadcasts intended for specific categories of viewers - Google Patents

Method and devices for transmitting and receiving television broadcasts intended for specific categories of viewers

Info

Publication number
FR1459273A
FR1459273A FR34134A FR34134A FR1459273A FR 1459273 A FR1459273 A FR 1459273A FR 34134 A FR34134 A FR 34134A FR 34134 A FR34134 A FR 34134A FR 1459273 A FR1459273 A FR 1459273A
Authority
FR
France
Prior art keywords
viewers
transmitting
devices
television broadcasts
receiving television
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
FR34134A
Other languages
French (fr)
Inventor
Marcel Rognon
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 FR34134A priority Critical patent/FR1459273A/en
Application granted granted Critical
Publication of FR1459273A publication Critical patent/FR1459273A/en
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
    • H04N7/171—Systems operating in the amplitude domain of the television signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
FR34134A 1965-10-07 1965-10-07 Method and devices for transmitting and receiving television broadcasts intended for specific categories of viewers Expired FR1459273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR34134A FR1459273A (en) 1965-10-07 1965-10-07 Method and devices for transmitting and receiving television broadcasts intended for specific categories of viewers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR34134A FR1459273A (en) 1965-10-07 1965-10-07 Method and devices for transmitting and receiving television broadcasts intended for specific categories of viewers

Publications (1)

Publication Number Publication Date
FR1459273A true FR1459273A (en) 1966-04-29

Family

ID=8589955

Family Applications (1)

Application Number Title Priority Date Filing Date
FR34134A Expired FR1459273A (en) 1965-10-07 1965-10-07 Method and devices for transmitting and receiving television broadcasts intended for specific categories of viewers

Country Status (1)

Country Link
FR (1) FR1459273A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502880A1 (en) * 1981-03-24 1982-10-01 Telediffusion Fse Coding and decoding circuits for TV diffusion network - requires magnetically coded key to operate decoder allowing separation and demodulation of received signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502880A1 (en) * 1981-03-24 1982-10-01 Telediffusion Fse Coding and decoding circuits for TV diffusion network - requires magnetically coded key to operate decoder allowing separation and demodulation of received signals

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