JPS502499A - - Google Patents

Info

Publication number
JPS502499A
JPS502499A JP49022255A JP2225574A JPS502499A JP S502499 A JPS502499 A JP S502499A JP 49022255 A JP49022255 A JP 49022255A JP 2225574 A JP2225574 A JP 2225574A JP S502499 A JPS502499 A JP S502499A
Authority
JP
Japan
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.)
Pending
Application number
JP49022255A
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 filed Critical
Publication of JPS502499A publication Critical patent/JPS502499A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/1895—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using light change detection systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
JP49022255A 1973-02-26 1974-02-25 Pending JPS502499A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US335804A US3859648A (en) 1973-02-26 1973-02-26 Intruder detection system utilizing artificial ambient light

Publications (1)

Publication Number Publication Date
JPS502499A true JPS502499A (ja) 1975-01-11

Family

ID=23313279

Family Applications (1)

Application Number Title Priority Date Filing Date
JP49022255A Pending JPS502499A (ja) 1973-02-26 1974-02-25

Country Status (2)

Country Link
US (1) US3859648A (ja)
JP (1) JPS502499A (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE870387A (fr) * 1978-09-11 1979-01-02 Lecloux Jacques Commutateur a cinetisme
USRE32828E (en) * 1979-11-13 1989-01-10 Cerberus A.G. Passive infrared intrusion detection system
CA1222873A (en) * 1984-05-29 1987-06-16 Peter C.J. Parsonage Electronic switch
US4736097A (en) * 1987-02-02 1988-04-05 Harald Philipp Optical motion sensor
US4864278A (en) * 1987-02-06 1989-09-05 Robert Hooke Memorial Laboratories, Inc. Optical intrusion detection system and method
US6431984B2 (en) * 1997-06-03 2002-08-13 Christopher R. Coyer Security systems for use in gaming tables and methods therefor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2269340A (en) * 1939-09-07 1942-01-06 Westinghouse Electric & Mfg Co Burglar alarm
US2912683A (en) * 1956-12-31 1959-11-10 Kidde & Co Walter Apparatus for photoelectric intruder detection
US3255441A (en) * 1962-11-30 1966-06-07 Goodwin Smoke, flame, critical temperature and rate of temperature rise detector
US3278923A (en) * 1964-06-30 1966-10-11 Specialties Dev Corp System for detecting intruders
US3370284A (en) * 1965-01-21 1968-02-20 Samuel M. Bagno Optical space alarm
US3444544A (en) * 1965-07-19 1969-05-13 American District Telegraph Co Light modulated intrusion detection system
US3603957A (en) * 1969-01-02 1971-09-07 Floyd S Merchant Intrusion alarm system and line voltage compensation

Also Published As

Publication number Publication date
US3859648A (en) 1975-01-07

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