BE826727A - Systeme de codage a onde sinusoidale pour television par cable - Google Patents

Systeme de codage a onde sinusoidale pour television par cable

Info

Publication number
BE826727A
BE826727A BE154371A BE154371A BE826727A BE 826727 A BE826727 A BE 826727A BE 154371 A BE154371 A BE 154371A BE 154371 A BE154371 A BE 154371A BE 826727 A BE826727 A BE 826727A
Authority
BE
Belgium
Prior art keywords
sine wave
cable television
coding system
wave coding
television
Prior art date
Application number
BE154371A
Other languages
English (en)
French (fr)
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
Publication of BE826727A publication Critical patent/BE826727A/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
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
BE154371A 1974-03-15 1975-03-14 Systeme de codage a onde sinusoidale pour television par cable BE826727A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45149074A 1974-03-15 1974-03-15

Publications (1)

Publication Number Publication Date
BE826727A true BE826727A (fr) 1975-06-30

Family

ID=23792432

Family Applications (1)

Application Number Title Priority Date Filing Date
BE154371A BE826727A (fr) 1974-03-15 1975-03-14 Systeme de codage a onde sinusoidale pour television par cable

Country Status (7)

Country Link
BE (1) BE826727A (es)
CH (1) CH575694A5 (es)
DE (2) DE2510348C2 (es)
FI (1) FI67284C (es)
FR (1) FR2264448B1 (es)
GB (1) GB1500743A (es)
NL (1) NL7502883A (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH575694A5 (es) * 1974-03-15 1976-05-14 Oak Industries Inc
FR2385281A2 (fr) * 1974-03-15 1978-10-20 Oak Industries Inc Dispositif de decodage de signaux de television
US4112464A (en) * 1977-05-11 1978-09-05 Oak Industries Inc. Subscription TV decoder logic system
US4145717A (en) * 1977-05-11 1979-03-20 Oak Industries Inc. Subscription TV audio carrier recovery system
US4336553A (en) * 1980-05-14 1982-06-22 Oak Industries Method of coding audio and video signals
US4353088A (en) * 1980-05-14 1982-10-05 Oak Industries, Inc. Coding and decoding system for video and audio signals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081376A (en) * 1959-03-23 1963-03-12 Zenith Radio Corp Subscription television system
US3333198A (en) * 1965-12-29 1967-07-25 Ampli Vision Corp Television converter for catv system
US3729576A (en) * 1971-02-08 1973-04-24 Optical Sys Corp Encoding and decoding system for catv
CH575694A5 (es) * 1974-03-15 1976-05-14 Oak Industries Inc

Also Published As

Publication number Publication date
GB1500743A (en) 1978-02-08
DE2711756C2 (de) 1984-03-01
FR2264448B1 (es) 1979-03-30
DE2711756A1 (de) 1978-09-21
DE2510348C2 (de) 1983-11-03
NL7502883A (nl) 1975-09-17
FI750683A (es) 1975-09-16
FR2264448A1 (es) 1975-10-10
FI67284B (fi) 1984-10-31
DE2510348A1 (de) 1975-09-18
FI67284C (fi) 1985-02-11
CH575694A5 (es) 1976-05-14

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: OCI COMMUNICATION INC.

Effective date: 19950314