FR2314547A1 - Procede et dispositif d'alarme enregistreur et avertisseur sonore par ondes radiophoniques - Google Patents

Procede et dispositif d'alarme enregistreur et avertisseur sonore par ondes radiophoniques

Info

Publication number
FR2314547A1
FR2314547A1 FR7518816A FR7518816A FR2314547A1 FR 2314547 A1 FR2314547 A1 FR 2314547A1 FR 7518816 A FR7518816 A FR 7518816A FR 7518816 A FR7518816 A FR 7518816A FR 2314547 A1 FR2314547 A1 FR 2314547A1
Authority
FR
France
Prior art keywords
transmitter
tape recorder
radio wave
recording
wave sound
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
FR7518816A
Other languages
English (en)
French (fr)
Other versions
FR2314547B3 (enrdf_load_stackoverflow
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 FR7518816A priority Critical patent/FR2314547A1/fr
Publication of FR2314547A1 publication Critical patent/FR2314547A1/fr
Application granted granted Critical
Publication of FR2314547B3 publication Critical patent/FR2314547B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G08B25/06—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 power transmission lines
    • 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
    • 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
    • G08B25/012—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 recorded signals, e.g. speech

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Emergency Alarm Devices (AREA)
  • Alarm Systems (AREA)
FR7518816A 1975-06-10 1975-06-10 Procede et dispositif d'alarme enregistreur et avertisseur sonore par ondes radiophoniques Granted FR2314547A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7518816A FR2314547A1 (fr) 1975-06-10 1975-06-10 Procede et dispositif d'alarme enregistreur et avertisseur sonore par ondes radiophoniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7518816A FR2314547A1 (fr) 1975-06-10 1975-06-10 Procede et dispositif d'alarme enregistreur et avertisseur sonore par ondes radiophoniques

Publications (2)

Publication Number Publication Date
FR2314547A1 true FR2314547A1 (fr) 1977-01-07
FR2314547B3 FR2314547B3 (enrdf_load_stackoverflow) 1978-02-03

Family

ID=9156595

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518816A Granted FR2314547A1 (fr) 1975-06-10 1975-06-10 Procede et dispositif d'alarme enregistreur et avertisseur sonore par ondes radiophoniques

Country Status (1)

Country Link
FR (1) FR2314547A1 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR2314547B3 (enrdf_load_stackoverflow) 1978-02-03

Similar Documents

Publication Publication Date Title
JPS5444801A (en) Radio inter-call receiver
JPS52146598A (en) Ultrasonic wave transmitter for burglar alarm system
FR2270733A1 (en) Magnetic field vehicle detector unit - receiver detects changes produced in an emitted magnetic field
ES419590A1 (es) Sistema de control remoto.
GB1460148A (en) Data transmission system
KR880700978A (ko) 원격 감시용 장치
FR2314547A1 (fr) Procede et dispositif d'alarme enregistreur et avertisseur sonore par ondes radiophoniques
GB919172A (enrdf_load_stackoverflow)
JPS51116609A (en) Initial connection system and apparatus for time division multiple acc ess communication system
JPS5517826A (en) Voice starting device for tape recorder
JPS5512577A (en) Fm wireless record player
GB467013A (en) Improvements in or relating to directional radio systems
GB1534832A (en) Selective call radio communication receivers
FR2319164A2 (fr) Procede et dispositif d'alarme enregistreur et avertisseur sonore par ondes radiophoniques
FR2435170A1 (fr) Interphone selectif automatique pour surveillance acoustique
JPS5914749U (ja) 無線式自動車盗難防止装置
JPS5446404A (en) Noise reduction device
GB1469419A (en) Fm transceiver
FR2382726A1 (fr) Dispositif radiophonique
JPS5795734A (en) Method for automatic inspection of multiple radio loud speaker receiving station
JPS5567685A (en) Alarm watch
JPS5621497A (en) Wireless earphone system
FR2309935A1 (fr) Indicateur de l'heure de passage d'un vehicule en un lieu determine
JPS5335493A (en) Object approach alarm equipment
JPS57202198A (en) Portable stereo audio equipment

Legal Events

Date Code Title Description
ST Notification of lapse