FR2351461A1 - Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range - Google Patents

Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range

Info

Publication number
FR2351461A1
FR2351461A1 FR7615152A FR7615152A FR2351461A1 FR 2351461 A1 FR2351461 A1 FR 2351461A1 FR 7615152 A FR7615152 A FR 7615152A FR 7615152 A FR7615152 A FR 7615152A FR 2351461 A1 FR2351461 A1 FR 2351461A1
Authority
FR
France
Prior art keywords
transmitter
alarm signal
range
carried out
theft deterrent
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.)
Granted
Application number
FR7615152A
Other languages
French (fr)
Other versions
FR2351461B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7615152A priority Critical patent/FR2351461A1/en
Publication of FR2351461A1 publication Critical patent/FR2351461A1/en
Application granted granted Critical
Publication of FR2351461B1 publication Critical patent/FR2351461B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0227—System arrangements with a plurality of child units
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1427—Mechanical actuation by lifting or attempted removal of hand-portable articles with transmitter-receiver for distance detection
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/023—Power management, e.g. system sleep and wake up provisions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0241—Data exchange details, e.g. data protocol
    • G08B21/0247—System arrangements wherein the alarm criteria uses signal strength
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The theft deterrent system employs a radio transmitter, which is incorporated in each protected object, eg a handbag, and a receiver which is carried by the owner. The received signal amplitude is monitored, so that as the distance between the transmitter and the receiver exceeds a given threshold, provided by an amplitude discriminator, an alarm signal circuit is operated. The transmitter may provide HF transmission pulses, which are used as clock signals for the receiver, or the transmitter may provide a modulated signal which is detected by the discriminator of the reception circuit.
FR7615152A 1976-05-12 1976-05-12 Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range Granted FR2351461A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7615152A FR2351461A1 (en) 1976-05-12 1976-05-12 Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7615152A FR2351461A1 (en) 1976-05-12 1976-05-12 Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range

Publications (2)

Publication Number Publication Date
FR2351461A1 true FR2351461A1 (en) 1977-12-09
FR2351461B1 FR2351461B1 (en) 1980-11-14

Family

ID=9173367

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7615152A Granted FR2351461A1 (en) 1976-05-12 1976-05-12 Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range

Country Status (1)

Country Link
FR (1) FR2351461A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407537A1 (en) * 1977-10-28 1979-05-25 Badens Gerard Object distance measuring and signalling system - uses transmitter on monitored object and receiver at supervision station
EP0024630A2 (en) * 1979-08-22 1981-03-11 Walter Hamann Anti-theft device for a valuables transportation-container
FR2498783A1 (en) * 1981-01-23 1982-07-30 Decis Mario AUTOMATIC PRESENCE CONTROL DEVICE
FR2541021A1 (en) * 1983-02-14 1984-08-17 Lagade Alain Miniaturised functional device intended for signalling from any object being separated from the possessor
FR2543715A1 (en) * 1983-03-30 1984-10-05 Mayer Claude Monitoring device triggering an alarm in the case of separation between the user and a person, an animal or a monitored object
FR2569959A1 (en) * 1984-04-13 1986-03-14 Vinci Rene Reminder device
FR2658343A1 (en) * 1990-02-09 1991-08-16 Olivier Denis Device against theft of and breaking into containers
WO2020126653A1 (en) 2018-12-20 2020-06-25 L V M H Recherche Rosewood extract
FR3111543A1 (en) 2020-06-22 2021-12-24 L V M H Recherche NEW USES OF A ROSEWOOD EXTRACT
FR3136172A1 (en) 2022-06-07 2023-12-08 L V M H Recherche Anti-aging composition with rose extracts and peptides

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407537A1 (en) * 1977-10-28 1979-05-25 Badens Gerard Object distance measuring and signalling system - uses transmitter on monitored object and receiver at supervision station
EP0024630A2 (en) * 1979-08-22 1981-03-11 Walter Hamann Anti-theft device for a valuables transportation-container
EP0024630A3 (en) * 1979-08-22 1981-03-25 Walter Hamann Anti-theft device for a valuables transportation-container
FR2498783A1 (en) * 1981-01-23 1982-07-30 Decis Mario AUTOMATIC PRESENCE CONTROL DEVICE
FR2541021A1 (en) * 1983-02-14 1984-08-17 Lagade Alain Miniaturised functional device intended for signalling from any object being separated from the possessor
FR2543715A1 (en) * 1983-03-30 1984-10-05 Mayer Claude Monitoring device triggering an alarm in the case of separation between the user and a person, an animal or a monitored object
FR2569959A1 (en) * 1984-04-13 1986-03-14 Vinci Rene Reminder device
FR2658343A1 (en) * 1990-02-09 1991-08-16 Olivier Denis Device against theft of and breaking into containers
WO2020126653A1 (en) 2018-12-20 2020-06-25 L V M H Recherche Rosewood extract
FR3090380A1 (en) 2018-12-20 2020-06-26 L V M H Recherche ROSEWOOD EXTRACT
FR3111543A1 (en) 2020-06-22 2021-12-24 L V M H Recherche NEW USES OF A ROSEWOOD EXTRACT
FR3136172A1 (en) 2022-06-07 2023-12-08 L V M H Recherche Anti-aging composition with rose extracts and peptides
WO2023237833A1 (en) 2022-06-07 2023-12-14 L V M H Recherche Anti-ageing composition with rose extracts and peptides

Also Published As

Publication number Publication date
FR2351461B1 (en) 1980-11-14

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Legal Events

Date Code Title Description
ST Notification of lapse