FR2236328B1 - - Google Patents

Info

Publication number
FR2236328B1
FR2236328B1 FR7424251A FR7424251A FR2236328B1 FR 2236328 B1 FR2236328 B1 FR 2236328B1 FR 7424251 A FR7424251 A FR 7424251A FR 7424251 A FR7424251 A FR 7424251A FR 2236328 B1 FR2236328 B1 FR 2236328B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7424251A
Other versions
FR2236328A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Communications Patents Ltd
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 FR2236328A1 publication Critical patent/FR2236328A1/fr
Application granted granted Critical
Publication of FR2236328B1 publication Critical patent/FR2236328B1/fr
Expired legal-status Critical Current

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
    • H04N7/17345—Control of the passage of the selected programme
    • 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
    • H04N7/17345—Control of the passage of the selected programme
    • H04N7/17354—Control of the passage of the selected programme in an intermediate station common to a plurality of user terminals
    • 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)
  • Relay Circuits (AREA)
  • Keying Circuit Devices (AREA)
  • Radio Relay Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
FR7424251A 1974-07-01 1974-07-05 Expired FR2236328B1 (fr)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2236328A1 FR2236328A1 (fr) 1975-01-31
FR2236328B1 true FR2236328B1 (fr) 1978-03-24

Family

ID=10332334

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7424251A Expired FR2236328B1 (fr) 1974-07-01 1974-07-05

Country Status (13)

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

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 (fr) * 1960-09-01
BE634094A (fr) * 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
IT1016319B (it) 1977-05-30
DE2431897B2 (de) 1979-01-25
CH566682A5 (fr) 1975-09-15
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 (fr) 1975-06-13
GB1471145A (en) 1977-04-21
IL45198A0 (en) 1974-10-22
CA1030072A (fr) 1978-04-25
FR2236328A1 (fr) 1975-01-31
NL7409082A (nl) 1975-01-07
SE7408814L (fr) 1975-01-07

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Legal Events

Date Code Title Description
ST Notification of lapse