ES476249A1 - Wired broadcasting systems - Google Patents

Wired broadcasting systems

Info

Publication number
ES476249A1
ES476249A1 ES476249A ES476249A ES476249A1 ES 476249 A1 ES476249 A1 ES 476249A1 ES 476249 A ES476249 A ES 476249A ES 476249 A ES476249 A ES 476249A ES 476249 A1 ES476249 A1 ES 476249A1
Authority
ES
Spain
Prior art keywords
change
selector
broadcasting systems
cable
wired 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.)
Expired
Application number
ES476249A
Other languages
Spanish (es)
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 ES476249A1 publication Critical patent/ES476249A1/en
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
    • H04N7/22—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

Cable diffusion system comprising at least one program change in which television signals and a series of subscriber units are available, each connected to a respective program selector existing in said change and provided with means for controlling said selector, wherein the subscriber unit is connected to said change by means of a cable that incorporates at least one optical fiber to transmit television signals to said unit from said change and at least one electrical conductor for transporting control signals of the selector from the subscriber unit to said change. (Machine-translation by Google Translate, not legally binding)
ES476249A 1978-01-23 1978-12-21 Wired broadcasting systems Expired ES476249A1 (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
ES476249A1 true ES476249A1 (en) 1979-05-16

Family

ID=9741939

Family Applications (1)

Application Number Title Priority Date Filing Date
ES476249A Expired ES476249A1 (en) 1978-01-23 1978-12-21 Wired broadcasting systems

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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1306366A (en) * 1969-05-22 1973-02-07
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
DE2603644C3 (en) * 1976-01-30 1980-02-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Community antenna system

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
FR2415404A1 (en) 1979-08-17
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

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