BR7017853D0 - ELECTRONIC SURVEILLANCE SYSTEM - Google Patents

ELECTRONIC SURVEILLANCE SYSTEM

Info

Publication number
BR7017853D0
BR7017853D0 BR217853/70A BR21785370A BR7017853D0 BR 7017853 D0 BR7017853 D0 BR 7017853D0 BR 217853/70 A BR217853/70 A BR 217853/70A BR 21785370 A BR21785370 A BR 21785370A BR 7017853 D0 BR7017853 D0 BR 7017853D0
Authority
BR
Brazil
Prior art keywords
surveillance system
electronic surveillance
electronic
surveillance
Prior art date
Application number
BR217853/70A
Other languages
Portuguese (pt)
Inventor
Ltd Unisearch
Original Assignee
Ltd Unisearch
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 Ltd Unisearch filed Critical Ltd Unisearch
Publication of BR7017853D0 publication Critical patent/BR7017853D0/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/755—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using delay lines, e.g. acoustic delay lines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/753—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using frequency selective elements, e.g. resonator
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)
BR217853/70A 1969-04-02 1970-03-31 ELECTRONIC SURVEILLANCE SYSTEM BR7017853D0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU5297069 1969-04-02

Publications (1)

Publication Number Publication Date
BR7017853D0 true BR7017853D0 (en) 1973-04-17

Family

ID=3739082

Family Applications (1)

Application Number Title Priority Date Filing Date
BR217853/70A BR7017853D0 (en) 1969-04-02 1970-03-31 ELECTRONIC SURVEILLANCE SYSTEM

Country Status (12)

Country Link
JP (1) JPS5122797B1 (en)
AR (1) AR211833A1 (en)
BE (1) BE748053A (en)
BR (1) BR7017853D0 (en)
CH (1) CH522259A (en)
DE (1) DE2015319C3 (en)
FR (1) FR2038186A1 (en)
GB (1) GB1290097A (en)
IL (1) IL34201A0 (en)
LU (1) LU60651A1 (en)
NL (1) NL172893C (en)
SE (1) SE341363B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
US4413254A (en) * 1981-09-04 1983-11-01 Sensormatic Electronics Corporation Combined radio and magnetic energy responsive surveillance marker and system
US4642640A (en) * 1983-04-25 1987-02-10 Sensormatic Electronics Corporation Signal receptor-reradiator and surveillance tag using the same
US4736207A (en) * 1986-01-31 1988-04-05 Sensormatic Electronics Corporation Tag device and method for electronic article surveillance
US4951057A (en) * 1989-11-13 1990-08-21 X-Cyte, Inc. Inductive input/output coupling for a surface acoustic wave device
US5095240A (en) * 1989-11-13 1992-03-10 X-Cyte, Inc. Inductively coupled saw device and method for making the same
WO2019238201A1 (en) * 2018-06-11 2019-12-19 Hivetracker Sa A sytem for determining the location of mobile units in a warehouse and a warehouse provided with such system

Also Published As

Publication number Publication date
IL34201A0 (en) 1970-05-21
NL172893C (en) 1983-11-01
DE2015319C3 (en) 1980-02-21
JPS5122797B1 (en) 1976-07-12
FR2038186A1 (en) 1971-01-08
SE341363B (en) 1971-12-20
NL7004749A (en) 1970-10-06
LU60651A1 (en) 1971-06-14
BE748053A (en) 1970-09-28
NL172893B (en) 1983-06-01
DE2015319B2 (en) 1979-06-28
GB1290097A (en) 1972-09-20
DE2015319A1 (en) 1970-10-15
CH522259A (en) 1972-06-15
AR211833A1 (en) 1978-03-31

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