CA1052446A - Systeme de diffusion a canaux multiples, par cable coaxial a large bande - Google Patents

Systeme de diffusion a canaux multiples, par cable coaxial a large bande

Info

Publication number
CA1052446A
CA1052446A CA221,995A CA221995A CA1052446A CA 1052446 A CA1052446 A CA 1052446A CA 221995 A CA221995 A CA 221995A CA 1052446 A CA1052446 A CA 1052446A
Authority
CA
Canada
Prior art keywords
subscriber
frequency
unit
tone
exchange
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
CA221,995A
Other languages
English (en)
Other versions
CA221995S (en
Inventor
Eric J. Gargini
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
Application granted granted Critical
Publication of CA1052446A publication Critical patent/CA1052446A/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
    • 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)
  • Interface Circuits In Exchanges (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)
CA221,995A 1974-03-16 1975-03-13 Systeme de diffusion a canaux multiples, par cable coaxial a large bande Expired CA1052446A (fr)

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
CA1052446A true CA1052446A (fr) 1979-04-10

Family

ID=9992776

Family Applications (1)

Application Number Title Priority Date Filing Date
CA221,995A Expired CA1052446A (fr) 1974-03-16 1975-03-13 Systeme de diffusion a canaux multiples, par cable coaxial a large bande

Country Status (13)

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

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 (fr) * 1979-08-22 1983-03-01 Eric J. Gargini Systeme de telediffusion par cables a selection de programme commandee par l'abonne
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 (fr) * 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
SE407002B (sv) 1979-03-05
ES435664A1 (es) 1976-12-01
FR2264447A1 (fr) 1975-10-10
IT1032322B (it) 1979-05-30
CH589981A5 (fr) 1977-07-29
NL7503107A (nl) 1975-09-18
DE2510865C3 (de) 1983-11-10
FR2264447B1 (fr) 1981-07-24
IL46827A (en) 1977-07-31
SE7502806L (fr) 1975-09-17
DE2510865A1 (de) 1975-09-18
ZA751615B (en) 1976-02-25
DE2510865B2 (de) 1978-12-14
JPS50133701A (fr) 1975-10-23
GB1480749A (en) 1977-07-20
NL183694B (nl) 1988-07-18
IL46827A0 (en) 1975-05-22
BE826763A (fr) 1975-07-16

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