FR2038186A1 - - Google Patents

Info

Publication number
FR2038186A1
FR2038186A1 FR7011981A FR7011981A FR2038186A1 FR 2038186 A1 FR2038186 A1 FR 2038186A1 FR 7011981 A FR7011981 A FR 7011981A FR 7011981 A FR7011981 A FR 7011981A FR 2038186 A1 FR2038186 A1 FR 2038186A1
Authority
FR
France
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
FR7011981A
Other languages
French (fr)
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.)
Unisearch Ltd
Original Assignee
Unisearch Ltd
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 Unisearch Ltd filed Critical Unisearch Ltd
Publication of FR2038186A1 publication Critical patent/FR2038186A1/fr
Pending legal-status Critical Current

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)
  • Radar Systems Or Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
FR7011981A 1969-04-02 1970-04-02 Pending FR2038186A1 (ja)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR2038186A1 true FR2038186A1 (ja) 1971-01-08

Family

ID=3739082

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7011981A Pending FR2038186A1 (ja) 1969-04-02 1970-04-02

Country Status (12)

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

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
US5095240A (en) * 1989-11-13 1992-03-10 X-Cyte, Inc. Inductively coupled saw device and method for making the same
US4951057A (en) * 1989-11-13 1990-08-21 X-Cyte, Inc. Inductive input/output coupling for a surface acoustic wave device
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
SE341363B (ja) 1971-12-20
AR211833A1 (es) 1978-03-31
BR7017853D0 (pt) 1973-04-17
DE2015319A1 (de) 1970-10-15
NL172893C (nl) 1983-11-01
NL7004749A (ja) 1970-10-06
BE748053A (fr) 1970-09-28
JPS5122797B1 (ja) 1976-07-12
CH522259A (fr) 1972-06-15
DE2015319B2 (de) 1979-06-28
NL172893B (nl) 1983-06-01
IL34201A0 (en) 1970-05-21
DE2015319C3 (de) 1980-02-21
GB1290097A (ja) 1972-09-20
LU60651A1 (ja) 1971-06-14

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