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FI67284C - Omvandlare foer kabel-tv - Google Patents

Omvandlare foer kabel-tv Download PDF

Info

Publication number
FI67284C
FI67284C FI750683A FI750683A FI67284C FI 67284 C FI67284 C FI 67284C FI 750683 A FI750683 A FI 750683A FI 750683 A FI750683 A FI 750683A FI 67284 C FI67284 C FI 67284C
Authority
FI
Finland
Prior art keywords
amplifier
output
signal
channel
sine wave
Prior art date
Application number
FI750683A
Other languages
English (en)
Finnish (fi)
Other versions
FI750683A (de
FI67284B (fi
Inventor
Ralph P Harney
Stanley E Guif
Original Assignee
Oak Industries Inc
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 Oak Industries Inc filed Critical Oak Industries Inc
Publication of FI750683A publication Critical patent/FI750683A/fi
Application granted granted Critical
Publication of FI67284B publication Critical patent/FI67284B/fi
Publication of FI67284C publication Critical patent/FI67284C/fi

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)
FI750683A 1974-03-15 1975-03-10 Omvandlare foer kabel-tv FI67284C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45149074A 1974-03-15 1974-03-15
US45149074 1974-03-15

Publications (3)

Publication Number Publication Date
FI750683A FI750683A (de) 1975-09-16
FI67284B FI67284B (fi) 1984-10-31
FI67284C true FI67284C (fi) 1985-02-11

Family

ID=23792432

Family Applications (1)

Application Number Title Priority Date Filing Date
FI750683A FI67284C (fi) 1974-03-15 1975-03-10 Omvandlare foer kabel-tv

Country Status (7)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH575694A5 (de) * 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
US4145717A (en) * 1977-05-11 1979-03-20 Oak Industries Inc. Subscription TV audio carrier recovery system
US4112464A (en) * 1977-05-11 1978-09-05 Oak Industries Inc. Subscription TV decoder logic 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 (de) * 1974-03-15 1976-05-14 Oak Industries Inc

Also Published As

Publication number Publication date
GB1500743A (en) 1978-02-08
FI750683A (de) 1975-09-16
DE2510348A1 (de) 1975-09-18
FR2264448B1 (de) 1979-03-30
DE2510348C2 (de) 1983-11-03
BE826727A (fr) 1975-06-30
CH575694A5 (de) 1976-05-14
FR2264448A1 (de) 1975-10-10
DE2711756C2 (de) 1984-03-01
DE2711756A1 (de) 1978-09-21
NL7502883A (nl) 1975-09-17
FI67284B (fi) 1984-10-31

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Legal Events

Date Code Title Description
MA Patent expired
MA Patent expired

Owner name: OCI COMMUNICATION INC