SE387027B - DEVICE FOR TWARADY SYSTEMS - Google Patents

DEVICE FOR TWARADY SYSTEMS

Info

Publication number
SE387027B
SE387027B SE7214883A SE1488372A SE387027B SE 387027 B SE387027 B SE 387027B SE 7214883 A SE7214883 A SE 7214883A SE 1488372 A SE1488372 A SE 1488372A SE 387027 B SE387027 B SE 387027B
Authority
SE
Sweden
Prior art keywords
twarady
systems
twarady systems
Prior art date
Application number
SE7214883A
Other languages
Swedish (sv)
Inventor
E J Gargini
Original Assignee
Communications Patents Ltd
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 Communications Patents Ltd filed Critical Communications Patents Ltd
Publication of SE387027B publication Critical patent/SE387027B/en

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
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N2007/17372—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal the upstream transmission being initiated or timed by a signal from upstream of the user terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N2007/1739—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal the upstream communication being transmitted via a separate link, e.g. telephone line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Telephonic Communication Services (AREA)
  • Radio Relay Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
SE7214883A 1971-11-25 1972-11-16 DEVICE FOR TWARADY SYSTEMS SE387027B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5482271A GB1412586A (en) 1971-11-25 1971-11-25 Wired broadcasting systems

Publications (1)

Publication Number Publication Date
SE387027B true SE387027B (en) 1976-08-23

Family

ID=10472182

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7214883A SE387027B (en) 1971-11-25 1972-11-16 DEVICE FOR TWARADY SYSTEMS

Country Status (14)

Country Link
JP (1) JPS4864802A (en)
AU (1) AU467268B2 (en)
BE (1) BE791941A (en)
CH (1) CH552316A (en)
DE (1) DE2257644C3 (en)
ES (1) ES408940A1 (en)
FR (1) FR2161122B1 (en)
GB (1) GB1412586A (en)
IL (1) IL40808A (en)
IT (1) IT973721B (en)
MT (1) MTP730B (en)
NL (1) NL7215797A (en)
SE (1) SE387027B (en)
ZA (1) ZA728024B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917978C2 (en) * 1979-05-04 1983-12-22 Volker Joachim 4400 Münster Remme Cable communication system
ATE16548T1 (en) * 1982-04-29 1985-11-15 Deltavisie Bv SYSTEM FOR TRANSMISSION OF PROGRAM OR DATA SIGNALS.
DE3382546D1 (en) * 1982-05-14 1992-05-27 Communications Patents Ltd COMMUNICATION SYSTEM.
GB2164229B (en) * 1982-05-14 1986-08-20 Communications Patents Ltd Communications system
US4605958A (en) * 1983-04-14 1986-08-12 Control Data Corporation Method and apparatus for detecting the channel to which an electronic receiver system is tuned
US4789860A (en) * 1985-03-12 1988-12-06 U.S. Philips Corp. Interface between a receiver and a sub-system
US4896209A (en) * 1987-02-10 1990-01-23 Sony Corporation Passenger vehicle polling system having a central unit for polling passenger seat terminal units

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1409479A (en) * 1963-07-24 1965-08-27 Skiatron Elect & Tele slave transceivers called transponders retransmitting signals produced by the central station

Also Published As

Publication number Publication date
IL40808A0 (en) 1973-01-30
IL40808A (en) 1976-08-31
CH552316A (en) 1974-07-31
GB1412586A (en) 1975-11-05
IT973721B (en) 1974-06-10
BE791941A (en) 1973-03-16
DE2257644C3 (en) 1980-01-17
DE2257644B2 (en) 1979-05-17
AU467268B2 (en) 1975-11-27
AU4920072A (en) 1974-05-23
MTP730B (en) 1973-08-10
FR2161122A1 (en) 1973-07-06
DE2257644A1 (en) 1973-05-30
FR2161122B1 (en) 1978-03-03
NL7215797A (en) 1973-05-29
JPS4864802A (en) 1973-09-07
ZA728024B (en) 1973-07-25
ES408940A1 (en) 1975-10-16

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