FR2377675A1 - Dispositif d'alarme - Google Patents

Dispositif d'alarme

Info

Publication number
FR2377675A1
FR2377675A1 FR7801103A FR7801103A FR2377675A1 FR 2377675 A1 FR2377675 A1 FR 2377675A1 FR 7801103 A FR7801103 A FR 7801103A FR 7801103 A FR7801103 A FR 7801103A FR 2377675 A1 FR2377675 A1 FR 2377675A1
Authority
FR
France
Prior art keywords
signals
alarm
frequency multiplexed
large number
transmitted over
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.)
Withdrawn
Application number
FR7801103A
Other languages
English (en)
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.)
Oak Holland BV
Original Assignee
Oak Holland BV
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 Oak Holland BV filed Critical Oak Holland BV
Publication of FR2377675A1 publication Critical patent/FR2377675A1/fr
Withdrawn legal-status Critical Current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
    • 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

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

L'invention a trait à un dispositif d'alarme. Elle a pour objet un dispositif d'alarme destiné à la transmission de signaux de plusieurs générateurs d'alarme à un ou plusieurs récepteurs, dans lequel les signaux sont transmis en utilisant un réseau coaxial dans la plage HF ou VHF, de façon que ces signaux de différents générateurs d'alarme soient délivrés au meme réseau coaxial en étant juxtaposés en multiplex par répartition en fréquence. Application : notamment alerte d'incendie, surveillance de personnes âgées, etc.
FR7801103A 1977-01-17 1978-01-16 Dispositif d'alarme Withdrawn FR2377675A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7700448A NL7700448A (nl) 1977-01-17 1977-01-17 Alarmeringsstelsel.

Publications (1)

Publication Number Publication Date
FR2377675A1 true FR2377675A1 (fr) 1978-08-11

Family

ID=19827787

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7801103A Withdrawn FR2377675A1 (fr) 1977-01-17 1978-01-16 Dispositif d'alarme

Country Status (4)

Country Link
DE (1) DE2801451A1 (fr)
FR (1) FR2377675A1 (fr)
IT (1) IT1106963B (fr)
NL (1) NL7700448A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996013820A1 (fr) * 1994-10-27 1996-05-09 Margus Ludvik Systeme electronique de securite, de preference pour proteger des habitations pourvues de raccordements de television par cable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048634A1 (de) * 1980-12-23 1982-07-22 Siemens AG, 1000 Berlin und 8000 München Fernueberwachungseinrichtung mit wenigstens einer anordnung zur uebertragung von meldungen nach einem zeitmultiplex-frequenzmultiplex-verfahren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996013820A1 (fr) * 1994-10-27 1996-05-09 Margus Ludvik Systeme electronique de securite, de preference pour proteger des habitations pourvues de raccordements de television par cable

Also Published As

Publication number Publication date
IT7867084A0 (it) 1978-01-17
DE2801451A1 (de) 1978-07-27
NL7700448A (nl) 1978-07-19
IT1106963B (it) 1985-11-18

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Legal Events

Date Code Title Description
ST Notification of lapse