ES435664A1 - Perfeccionamientos en los sistemas de radiodifusion por ca-ble. - Google Patents

Perfeccionamientos en los sistemas de radiodifusion por ca-ble.

Info

Publication number
ES435664A1
ES435664A1 ES435664A ES435664A ES435664A1 ES 435664 A1 ES435664 A1 ES 435664A1 ES 435664 A ES435664 A ES 435664A ES 435664 A ES435664 A ES 435664A ES 435664 A1 ES435664 A1 ES 435664A1
Authority
ES
Spain
Prior art keywords
frequency
subscriber
cable
signals
sources
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
ES435664A
Other languages
English (en)
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 ES435664A1 publication Critical patent/ES435664A1/es
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Interface Circuits In Exchanges (AREA)
ES435664A 1974-03-16 1975-03-15 Perfeccionamientos en los sistemas de radiodifusion por ca-ble. Expired ES435664A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11791/74A GB1480749A (en) 1974-03-16 1974-03-16 Wired broadcasting systems

Publications (1)

Publication Number Publication Date
ES435664A1 true ES435664A1 (es) 1976-12-01

Family

ID=9992776

Family Applications (1)

Application Number Title Priority Date Filing Date
ES435664A Expired ES435664A1 (es) 1974-03-16 1975-03-15 Perfeccionamientos en los sistemas de radiodifusion por ca-ble.

Country Status (13)

Country Link
JP (1) JPS50133701A (it)
BE (1) BE826763A (it)
CA (1) CA1052446A (it)
CH (1) CH589981A5 (it)
DE (1) DE2510865C3 (it)
ES (1) ES435664A1 (it)
FR (1) FR2264447B1 (it)
GB (1) GB1480749A (it)
IL (1) IL46827A (it)
IT (1) IT1032322B (it)
NL (1) NL183694B (it)
SE (1) SE407002B (it)
ZA (1) ZA751615B (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135157A (en) * 1977-03-28 1979-01-16 Oak Industries Inc. Pole mounted converter
DE2807986A1 (de) * 1978-02-22 1979-08-30 Hertz Inst Heinrich Anlage fuer interaktives kabelfernsehen
CA1142244A (en) * 1979-08-22 1983-03-01 Eric J. Gargini Wired broadcasting system with subscriber controlled switched programme selection
DE2951512A1 (de) * 1979-12-20 1981-07-02 Siemens AG, 1000 Berlin und 8000 München Breitband-vermittlungssystem
FR2515400A1 (fr) * 1981-10-26 1983-04-29 Visiodis Sa Installation de telesurveillance
GB2127257A (en) * 1982-08-17 1984-04-04 Visionhire Cable Limited Distribution apparatus
DE3301208A1 (de) * 1983-01-15 1984-07-26 ANT Nachrichtentechnik GmbH, 7150 Backnang Breitbandverteilnetz
FI19992812A (fi) * 1999-12-29 2001-06-30 Helsingin Puhelin Oyj Menetelmä tietoliikenneverkon, kuten kaapelitelevisioverkon, tiedonsiirtokapasiteetin nostamiseksi

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073906A (en) * 1959-06-16 1963-01-15 Bell Telephone Labor Inc Line concentrating telephone system
BE632218A (it) * 1963-05-31
GB1272594A (en) * 1968-08-09 1972-05-03 Communications Patents Ltd Improvements in and relating to wired broadcasting systems

Also Published As

Publication number Publication date
DE2510865C3 (de) 1983-11-10
JPS50133701A (it) 1975-10-23
CH589981A5 (it) 1977-07-29
SE407002B (sv) 1979-03-05
ZA751615B (en) 1976-02-25
DE2510865A1 (de) 1975-09-18
IL46827A0 (en) 1975-05-22
IT1032322B (it) 1979-05-30
FR2264447A1 (it) 1975-10-10
CA1052446A (en) 1979-04-10
BE826763A (fr) 1975-07-16
DE2510865B2 (de) 1978-12-14
SE7502806L (it) 1975-09-17
NL7503107A (nl) 1975-09-18
GB1480749A (en) 1977-07-20
FR2264447B1 (it) 1981-07-24
IL46827A (en) 1977-07-31
NL183694B (nl) 1988-07-18

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971103