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FR1561785A - - Google Patents

Info

Publication number
FR1561785A
FR1561785A FR1561785DA FR1561785A FR 1561785 A FR1561785 A FR 1561785A FR 1561785D A FR1561785D A FR 1561785DA FR 1561785 A FR1561785 A FR 1561785A
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.)
Expired
Application number
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR1561785A publication Critical patent/FR1561785A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)
FR1561785D 1967-05-05 1968-05-03 Expired FR1561785A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US641411A US3363247A (en) 1967-05-05 1967-05-05 Identification system

Publications (1)

Publication Number Publication Date
FR1561785A true FR1561785A (en) 1969-03-28

Family

ID=24572259

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1561785D Expired FR1561785A (en) 1967-05-05 1968-05-03

Country Status (5)

Country Link
US (1) US3363247A (en)
DE (1) DE1774169A1 (en)
FR (1) FR1561785A (en)
GB (1) GB1218622A (en)
SE (1) SE346090B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624631A (en) * 1970-04-27 1971-11-30 Sanders Associates Inc Pilferage control system
JPS53120295A (en) * 1977-03-30 1978-10-20 Toshiba Corp Subject discrimination device
JPS56119868A (en) * 1980-02-27 1981-09-19 Toshiba Corp Object discriminator
US4642613A (en) * 1984-03-16 1987-02-10 Knogo Corporation Electronic theft detection apparatus with responder elements on protected articles
GB2164185B (en) * 1984-08-28 1988-05-11 Electromatic Inductive loop detector
SE8404876L (en) * 1984-09-28 1986-05-21 Bengt Larsson IDENTIFICATION SYSTEM
FR2597635B1 (en) * 1986-04-16 1991-03-29 Livratel Sa METHOD FOR REMOTELY IDENTIFYING ISOLATED OR BULK OBJECTS WITH A CODED LABEL, LABEL AND INSTALLATION FOR IMPLEMENTING SAME
NL9100110A (en) * 1991-01-23 1992-08-17 Texas Instruments Holland INTERESTING STATION FOR IDENTIFICATION PURPOSES WITH SEPARATE TRANSMITTER AND RECEIVER ANTENNAS.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169242A (en) * 1963-03-19 1965-02-09 Gen Electric Identification interrogating system
US3209350A (en) * 1963-10-04 1965-09-28 Gen Electric Identification interrogation system

Also Published As

Publication number Publication date
SE346090B (en) 1972-06-26
GB1218622A (en) 1971-01-06
DE1774169A1 (en) 1971-12-16
US3363247A (en) 1968-01-09

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Legal Events

Date Code Title Description
ST Notification of lapse