FR2415404A1 - IMPROVEMENTS RELATED TO OR RELATED TO CABLE BROADCASTING DEVICES - Google Patents

IMPROVEMENTS RELATED TO OR RELATED TO CABLE BROADCASTING DEVICES

Info

Publication number
FR2415404A1
FR2415404A1 FR7901454A FR7901454A FR2415404A1 FR 2415404 A1 FR2415404 A1 FR 2415404A1 FR 7901454 A FR7901454 A FR 7901454A FR 7901454 A FR7901454 A FR 7901454A FR 2415404 A1 FR2415404 A1 FR 2415404A1
Authority
FR
France
Prior art keywords
exchanger
subscriber station
television
selector
cable broadcasting
Prior art date
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.)
Withdrawn
Application number
FR7901454A
Other languages
French (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 FR2415404A1 publication Critical patent/FR2415404A1/en
Withdrawn legal-status Critical Current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
    • H04N7/22—Adaptations for optical transmission
    • 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

Abstract

L'invention concerne un dispositif de télédiffusion comprenant au moins un central échangeur de programmes dans lequel les signaux de télévision sont rendus disponibles, et plusieurs postes d'abonnés reliés chacun à un sélecteur de programmes respectif dans l'échangeur et pourvus de moyens pour contrôler ledit sélecteur. Le dispositif est caractérisé par le fait que le poste d'abonné est relié à l'échangeur par un câble incorporant au moins une fibre optique pour transmettre des signaux de télévision au poste d'abonné en venant de l'échangeur et au moins un conducteur électrique pour transporter des signaux de contrôle de sélecteur venant du poste de l'abonné vers l'échangeur. Application à la télévision par câble.The invention relates to a television broadcasting device comprising at least one central program exchanger in which the television signals are made available, and several subscriber stations each connected to a respective program selector in the exchanger and provided with means for controlling said selector. The device is characterized by the fact that the subscriber station is connected to the exchanger by a cable incorporating at least one optical fiber for transmitting television signals to the subscriber station from the exchanger and at least one conductor. electrical to carry selector control signals from the subscriber station to the exchanger. Application to cable television.

FR7901454A 1978-01-23 1979-01-16 IMPROVEMENTS RELATED TO OR RELATED TO CABLE BROADCASTING DEVICES Withdrawn FR2415404A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2572/78A GB1586543A (en) 1978-01-23 1978-01-23 Wired broadcasting systems

Publications (1)

Publication Number Publication Date
FR2415404A1 true FR2415404A1 (en) 1979-08-17

Family

ID=9741939

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901454A Withdrawn FR2415404A1 (en) 1978-01-23 1979-01-16 IMPROVEMENTS RELATED TO OR RELATED TO CABLE BROADCASTING DEVICES

Country Status (12)

Country Link
JP (1) JPS54116105A (en)
AU (1) AU4254878A (en)
BE (1) BE873611A (en)
DE (1) DE2900813A1 (en)
ES (1) ES476249A1 (en)
FR (1) FR2415404A1 (en)
GB (1) GB1586543A (en)
IL (1) IL56182A0 (en)
IT (1) IT1158175B (en)
NL (1) NL7900520A (en)
SE (1) SE7900540L (en)
ZA (1) ZA787225B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013533A1 (en) * 1980-04-08 1981-10-15 Siemens Ag CIRCUIT ARRANGEMENT WITH A LASER DIODE FOR TRANSMITTING MESSAGE SIGNALS VIA A LIGHT WAVE GUIDE
DE3224406A1 (en) * 1981-07-01 1983-01-20 Canon K.K., Tokyo IMAGE TRANSFER SYSTEM
MY112412A (en) * 1993-10-14 2001-06-30 Nuchem Australia Pty Ltd Multimedia enabled network.
GB2296169A (en) * 1994-12-14 1996-06-19 Metrovideo Ltd Video transmission systems

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2024977A1 (en) * 1969-05-22 1970-11-26 Communications Patents Ltd., a British Co., London Wireless system
FR2271727A1 (en) * 1974-02-06 1975-12-12 Radio Diffusion Tv Francaise Cable television distribution system - has separate return channel from subscriber on telephone line to reduce noise
DE2603644A1 (en) * 1976-01-30 1977-08-04 Siemens Ag Community antenna system with central station - having at least one connecting glass fibre to each subscriber and return channel
GB1486421A (en) * 1973-12-03 1977-09-21 Communications Patents Ltd Broadcast relay systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2024977A1 (en) * 1969-05-22 1970-11-26 Communications Patents Ltd., a British Co., London Wireless system
GB1486421A (en) * 1973-12-03 1977-09-21 Communications Patents Ltd Broadcast relay systems
FR2271727A1 (en) * 1974-02-06 1975-12-12 Radio Diffusion Tv Francaise Cable television distribution system - has separate return channel from subscriber on telephone line to reduce noise
DE2603644A1 (en) * 1976-01-30 1977-08-04 Siemens Ag Community antenna system with central station - having at least one connecting glass fibre to each subscriber and return channel

Also Published As

Publication number Publication date
JPS54116105A (en) 1979-09-10
GB1586543A (en) 1981-03-18
AU4254878A (en) 1979-08-02
NL7900520A (en) 1979-07-25
SE7900540L (en) 1979-07-24
BE873611A (en) 1979-05-16
ZA787225B (en) 1979-12-27
IT7852382A0 (en) 1978-12-20
IL56182A0 (en) 1979-03-12
DE2900813A1 (en) 1979-07-26
IT1158175B (en) 1987-02-18
ES476249A1 (en) 1979-05-16

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Legal Events

Date Code Title Description
ST Notification of lapse