CH566682A5 - - Google Patents

Info

Publication number
CH566682A5
CH566682A5 CH909374A CH909374A CH566682A5 CH 566682 A5 CH566682 A5 CH 566682A5 CH 909374 A CH909374 A CH 909374A CH 909374 A CH909374 A CH 909374A CH 566682 A5 CH566682 A5 CH 566682A5
Authority
CH
Switzerland
Application number
CH909374A
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 CH566682A5 publication Critical patent/CH566682A5/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17345Control of the passage of the selected programme
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17345Control of the passage of the selected programme
    • H04N7/17354Control of the passage of the selected programme in an intermediate station common to a plurality of user terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N2007/1739Analogue 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)
  • Relay Circuits (AREA)
  • Keying Circuit Devices (AREA)
  • Radio Relay Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
CH909374A 1974-07-01 1974-07-03 CH566682A5 (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3204773A GB1471145A (en) 1974-07-01 1974-07-01 Wired broadcasting systems

Publications (1)

Publication Number Publication Date
CH566682A5 true CH566682A5 (xx) 1975-09-15

Family

ID=10332334

Family Applications (1)

Application Number Title Priority Date Filing Date
CH909374A CH566682A5 (xx) 1974-07-01 1974-07-03

Country Status (13)

Country Link
US (1) US3920906A (xx)
JP (1) JPS5071204A (xx)
BE (1) BE817312A (xx)
CA (1) CA1030072A (xx)
CH (1) CH566682A5 (xx)
DE (1) DE2431897C3 (xx)
ES (1) ES427992A1 (xx)
FR (1) FR2236328B1 (xx)
GB (1) GB1471145A (xx)
IL (1) IL45198A (xx)
IT (1) IT1016319B (xx)
NL (1) NL7409082A (xx)
SE (1) SE399350B (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2539939A1 (de) * 1974-09-21 1976-04-08 Communications Patents Ltd Drahtfunksystem
US4068296A (en) * 1976-06-30 1978-01-10 General Electric Company Control for remote control wiring system
US4176251A (en) * 1978-05-15 1979-11-27 Transcale A.B. Modular switching system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1337676A (en) * 1918-10-17 1920-04-20 Western Electric Co Telephone system
US1632012A (en) * 1923-12-10 1927-06-14 American Telephone & Telegraph Program-selecting circuits
NL268865A (xx) * 1960-09-01
BE634094A (xx) * 1962-06-28
US3381146A (en) * 1967-08-04 1968-04-30 Navy Usa Trigger pulse circuit
US3614322A (en) * 1969-09-22 1971-10-19 Chester Electronic Lab Inc System for selecting and reproducing perceptible programs

Also Published As

Publication number Publication date
BE817312A (fr) 1974-11-04
IL45198A (en) 1977-04-29
SE399350B (sv) 1978-02-06
FR2236328B1 (xx) 1978-03-24
IT1016319B (it) 1977-05-30
DE2431897B2 (de) 1979-01-25
DE2431897A1 (de) 1975-01-30
AU7087674A (en) 1976-01-08
ES427992A1 (es) 1976-08-16
US3920906A (en) 1975-11-18
DE2431897C3 (de) 1979-09-27
JPS5071204A (xx) 1975-06-13
GB1471145A (en) 1977-04-21
IL45198A0 (en) 1974-10-22
CA1030072A (en) 1978-04-25
FR2236328A1 (xx) 1975-01-31
NL7409082A (nl) 1975-01-07
SE7408814L (xx) 1975-01-07

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Legal Events

Date Code Title Description
PL Patent ceased