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GB1489385A - Alarm signal communication systems - Google Patents

Alarm signal communication systems

Info

Publication number
GB1489385A
GB1489385A GB5306774A GB5306774A GB1489385A GB 1489385 A GB1489385 A GB 1489385A GB 5306774 A GB5306774 A GB 5306774A GB 5306774 A GB5306774 A GB 5306774A GB 1489385 A GB1489385 A GB 1489385A
Authority
GB
United Kingdom
Prior art keywords
alarm
alarm signal
dec
detected
signal
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
GB5306774A
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.)
Anatronics Corp
Original Assignee
Anatronics Corp
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 Anatronics Corp filed Critical Anatronics Corp
Publication of GB1489385A publication Critical patent/GB1489385A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
    • G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • 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
    • G08B25/009—Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Alarm Systems (AREA)
  • Circuits Of Receivers In General (AREA)
GB5306774A 1973-12-10 1974-12-09 Alarm signal communication systems Expired GB1489385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42356673A 1973-12-10 1973-12-10

Publications (1)

Publication Number Publication Date
GB1489385A true GB1489385A (en) 1977-10-19

Family

ID=23679345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5306774A Expired GB1489385A (en) 1973-12-10 1974-12-09 Alarm signal communication systems

Country Status (4)

Country Link
CH (1) CH590528A5 (de)
DE (1) DE2458434A1 (de)
FR (1) FR2254075A1 (de)
GB (1) GB1489385A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474210A1 (fr) * 1980-01-18 1981-07-24 Triumph Adler Buero Inf Systeme d'appel de secours utilisable en particulier par des personnes agees et/ou infirmes
GB2120048A (en) * 1982-02-26 1983-11-23 Mitsubishi Electric Corp Rescue transmitter apparatus
GB2125597A (en) * 1982-08-18 1984-03-07 Haley Radio Security Limited Alarm equipment
GB2225463A (en) * 1988-11-18 1990-05-30 Kenneth William Stephens Emergency warning means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474210A1 (fr) * 1980-01-18 1981-07-24 Triumph Adler Buero Inf Systeme d'appel de secours utilisable en particulier par des personnes agees et/ou infirmes
GB2120048A (en) * 1982-02-26 1983-11-23 Mitsubishi Electric Corp Rescue transmitter apparatus
GB2125597A (en) * 1982-08-18 1984-03-07 Haley Radio Security Limited Alarm equipment
GB2225463A (en) * 1988-11-18 1990-05-30 Kenneth William Stephens Emergency warning means

Also Published As

Publication number Publication date
FR2254075A1 (de) 1975-07-04
CH590528A5 (de) 1977-08-15
DE2458434A1 (de) 1975-06-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee