ES432542A1 - Broadcast relay systems - Google Patents

Broadcast relay systems

Info

Publication number
ES432542A1
ES432542A1 ES432542A ES432542A ES432542A1 ES 432542 A1 ES432542 A1 ES 432542A1 ES 432542 A ES432542 A ES 432542A ES 432542 A ES432542 A ES 432542A ES 432542 A1 ES432542 A1 ES 432542A1
Authority
ES
Spain
Prior art keywords
relay systems
broadcast relay
electro
translation
extends
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
ES432542A
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 ES432542A1 publication Critical patent/ES432542A1/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
    • 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
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2589—Bidirectional transmission
    • H04B10/25891—Transmission components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission

Abstract

Improvements in cable broadcasting systems, in which a signal path between a central station and at least some of a plurality of subscribers includes an optical fiber that extends between an electro-optical transducer and a photosensitive detector. (Machine-translation by Google Translate, not legally binding)
ES432542A 1973-12-03 1974-12-03 Broadcast relay systems Expired ES432542A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB55933/73A GB1486421A (en) 1973-12-03 1973-12-03 Broadcast relay systems

Publications (1)

Publication Number Publication Date
ES432542A1 true ES432542A1 (en) 1977-01-01

Family

ID=10475262

Family Applications (1)

Application Number Title Priority Date Filing Date
ES432542A Expired ES432542A1 (en) 1973-12-03 1974-12-03 Broadcast relay systems

Country Status (7)

Country Link
AU (1) AU7590574A (en)
CA (1) CA1058293A (en)
ES (1) ES432542A1 (en)
GB (1) GB1486421A (en)
IT (1) IT1023486B (en)
MY (1) MY7800253A (en)
ZA (1) ZA747630B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1586543A (en) * 1978-01-23 1981-03-18 Communications Patents Ltd Wired broadcasting systems
DE2934358A1 (en) * 1979-08-24 1981-03-26 Siemens AG, 1000 Berlin und 8000 München BROADBAND TELECOMMUNICATION SYSTEM
DE3224406A1 (en) * 1981-07-01 1983-01-20 Canon K.K., Tokyo IMAGE TRANSFER SYSTEM
NL8204722A (en) * 1982-12-07 1984-07-02 Philips Nv DISTRIBUTION SYSTEM FOR LOCAL FIBERNET.
GB2212021B (en) * 1987-11-06 1991-07-03 Stc Plc Radio frequency generator

Also Published As

Publication number Publication date
IT1023486B (en) 1978-05-10
GB1486421A (en) 1977-09-21
ZA747630B (en) 1975-12-31
AU7590574A (en) 1976-06-03
CA1058293A (en) 1979-07-10
MY7800253A (en) 1978-12-31

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