BE789101A - Codeur, decodeur audio pour systeme de television sur antenne collective - Google Patents

Codeur, decodeur audio pour systeme de television sur antenne collective

Info

Publication number
BE789101A
BE789101A BE789101DA BE789101A BE 789101 A BE789101 A BE 789101A BE 789101D A BE789101D A BE 789101DA BE 789101 A BE789101 A BE 789101A
Authority
BE
Belgium
Prior art keywords
decoder
television system
audio encoder
collective antenna
collective
Prior art date
Application number
Other languages
English (en)
French (fr)
Inventor
P R J Court
Original Assignee
Optical Systems Corp
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.)
Publication date
Publication of BE789101A publication Critical patent/BE789101A/xx

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
BE789101D 1971-09-28 Codeur, decodeur audio pour systeme de television sur antenne collective BE789101A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18447471A 1971-09-28 1971-09-28

Publications (1)

Publication Number Publication Date
BE789101A true BE789101A (fr) 1973-01-15

Family

ID=22677026

Family Applications (1)

Application Number Title Priority Date Filing Date
BE789101D BE789101A (fr) 1971-09-28 Codeur, decodeur audio pour systeme de television sur antenne collective

Country Status (6)

Country Link
US (1) US3769448A (enExample)
JP (1) JPS4842620A (enExample)
BE (1) BE789101A (enExample)
CH (1) CH549918A (enExample)
DE (1) DE2247547A1 (enExample)
FR (1) FR2154615A1 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5617876B2 (enExample) * 1972-07-11 1981-04-24
US3826863A (en) * 1973-02-09 1974-07-30 Oak Industries Inc Subscription television system using audio and video carrier reversal
JPS51150912A (en) * 1975-06-20 1976-12-24 Hiroshi Saito Pay television system
JPS5767473U (enExample) * 1980-10-08 1982-04-22
USRE33189E (en) * 1981-11-19 1990-03-27 Communications Satellite Corporation Security system for SSTV encryption

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231818A (en) * 1961-11-09 1966-01-25 Paramount Pictures Corp Audio secrecy system for subscription television

Also Published As

Publication number Publication date
CH549918A (de) 1974-05-31
JPS4842620A (enExample) 1973-06-21
FR2154615A1 (enExample) 1973-05-11
US3769448A (en) 1973-10-30
DE2247547A1 (de) 1973-04-05

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