BE797495A - Modulateur de signaux ascendants dans le systeme de television bidirectionnel a antenne communautaire - Google Patents

Modulateur de signaux ascendants dans le systeme de television bidirectionnel a antenne communautaire

Info

Publication number
BE797495A
BE797495A BE129405A BE129405A BE797495A BE 797495 A BE797495 A BE 797495A BE 129405 A BE129405 A BE 129405A BE 129405 A BE129405 A BE 129405A BE 797495 A BE797495 A BE 797495A
Authority
BE
Belgium
Prior art keywords
television system
signal modulator
community antenna
ascending signal
way television
Prior art date
Application number
BE129405A
Other languages
English (en)
French (fr)
Original Assignee
Hochiki Co
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 Hochiki Co filed Critical Hochiki Co
Publication of BE797495A publication Critical patent/BE797495A/xx

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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
    • G08B25/085—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines using central distribution transmission lines

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Fire Alarms (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Details Of Television Systems (AREA)
BE129405A 1972-04-01 1973-03-29 Modulateur de signaux ascendants dans le systeme de television bidirectionnel a antenne communautaire BE797495A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972037845U JPS5411822Y2 (de) 1972-04-01 1972-04-01

Publications (1)

Publication Number Publication Date
BE797495A true BE797495A (fr) 1973-07-16

Family

ID=12508856

Family Applications (1)

Application Number Title Priority Date Filing Date
BE129405A BE797495A (fr) 1972-04-01 1973-03-29 Modulateur de signaux ascendants dans le systeme de television bidirectionnel a antenne communautaire

Country Status (8)

Country Link
US (1) US3840812A (de)
JP (1) JPS5411822Y2 (de)
BE (1) BE797495A (de)
CA (1) CA984958A (de)
CH (1) CH562543A5 (de)
DE (1) DE2316166C3 (de)
FR (1) FR2178973B1 (de)
GB (1) GB1432445A (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5612916B2 (de) * 1973-12-29 1981-03-25
JPS5539039B2 (de) * 1974-01-29 1980-10-08
JPS5820079B2 (ja) * 1974-11-06 1983-04-21 マスプロデンコウ カブシキガイシヤ ケイホウソウチ
GB1526027A (en) * 1976-03-30 1978-09-27 Hochiki Co Subscription alarm system
JPS5333015A (en) * 1976-09-08 1978-03-28 Hochiki Co Twooways wire television set
DE2807986A1 (de) * 1978-02-22 1979-08-30 Hertz Inst Heinrich Anlage fuer interaktives kabelfernsehen
DE4127014A1 (de) * 1991-08-16 1993-02-18 Avm Schmelter Gmbh & Co Kg Anordnung zur medizinischen datenaufnahme
DE4422281C1 (de) * 1994-06-25 1996-02-01 Ziegler Horst Datenfernerfassungssystem
FR2878061B1 (fr) * 2004-11-16 2007-02-02 Domfort Soc Par Actions Simpli Systeme et procede de videosurveillance, centrale et terminal, adaptes pour ce systeme

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1495992A (en) * 1924-06-03 Means for and method oe reducing singing in repeaters
DE887365C (de) * 1941-12-12 1953-08-24 Siemens Ag Mitsprecheinrichtung fuer Zwischenverstaerker in Traegerfrequenzsystemen
DE919238C (de) * 1942-06-24 1954-10-18 Siemens Ag Traegerfrequenzuebertragungssystem
GB736126A (en) * 1953-04-10 1955-08-31 Emi Ltd Improvements relating to the monitoring of electric signal distributing systems
DE1937697B2 (de) * 1969-07-24 1971-03-04 Einrichtung zur fehlerortung bei traegerfrequenz systemen
DE1962204A1 (de) * 1969-12-11 1971-06-16 Josef Burkhart Verfahren zur Herstellung von Leichtbauelementen in der Fertighausbauweise und nach diesem Verfahren hergestellte Bauelemente,wie Waende,Sanitaerzellen u.dgl.m.

Also Published As

Publication number Publication date
DE2316166C3 (de) 1983-11-10
FR2178973A1 (de) 1973-11-16
DE2316166A1 (de) 1973-10-04
GB1432445A (en) 1976-04-14
US3840812A (en) 1974-10-08
CA984958A (en) 1976-03-02
JPS48113382U (de) 1973-12-25
JPS5411822Y2 (de) 1979-05-25
FR2178973B1 (de) 1976-06-11
DE2316166B2 (de) 1979-05-10
CH562543A5 (de) 1975-05-30

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