CA1078047A - Repondeurs a reflexion de microondes - Google Patents

Repondeurs a reflexion de microondes

Info

Publication number
CA1078047A
CA1078047A CA261,147A CA261147A CA1078047A CA 1078047 A CA1078047 A CA 1078047A CA 261147 A CA261147 A CA 261147A CA 1078047 A CA1078047 A CA 1078047A
Authority
CA
Canada
Prior art keywords
signal
frequency
code
transponder
receiving element
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.)
Expired
Application number
CA261,147A
Other languages
English (en)
Inventor
Colin D. Mcewen
Phillip R. M. Denne
David E. N. Davies
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.)
Alfa Laval Ltd Great Britain
Original Assignee
Alfa Laval Ltd Great Britain
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 Alfa Laval Ltd Great Britain filed Critical Alfa Laval Ltd Great Britain
Application granted granted Critical
Publication of CA1078047A publication Critical patent/CA1078047A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • 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
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/767—Responders; Transponders
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/56—Display arrangements
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Traffic Control Systems (AREA)
  • Near-Field Transmission Systems (AREA)
CA261,147A 1975-09-19 1976-09-14 Repondeurs a reflexion de microondes Expired CA1078047A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38660/75A GB1567750A (en) 1975-09-19 1975-09-19 Transponders

Publications (1)

Publication Number Publication Date
CA1078047A true CA1078047A (fr) 1980-05-20

Family

ID=10404881

Family Applications (1)

Application Number Title Priority Date Filing Date
CA261,147A Expired CA1078047A (fr) 1975-09-19 1976-09-14 Repondeurs a reflexion de microondes

Country Status (9)

Country Link
JP (1) JPS5255890A (fr)
AU (1) AU505686B2 (fr)
CA (1) CA1078047A (fr)
DE (1) DE2642022A1 (fr)
DK (1) DK422076A (fr)
FR (1) FR2325251A1 (fr)
GB (1) GB1567750A (fr)
IL (1) IL50466A (fr)
NL (1) NL7610226A (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ199520A (en) * 1981-01-21 1985-08-30 Australian Meat & Live Stock Livestock identification:implanted transponder
EP0098659B1 (fr) * 1981-07-14 1989-01-11 Cotag International Limited Dispositif actif pour un ensemble à codage de l'information, procédé pour l'alimenter en information codée, et systèmes comprenant un tel dispositif actif
GB2112607B (en) * 1981-12-18 1986-01-02 Senelco Ltd Transmitter/responder systems
ZA829121B (en) * 1981-12-18 1983-09-28 Senelco Ltd Transmitter/responder systems
DE3438923A1 (de) * 1983-10-26 1985-05-09 ITW New Zealand Ltd., Avondale, Auckland Elektronische markierungsvorrichtung zur uebertragung einer identifizierungsinformation
US4674618A (en) * 1983-12-06 1987-06-23 Mars Incorporated Tokens and token handling devices
CH663287A5 (de) * 1984-05-03 1987-11-30 Landis & Gyr Ag Einrichtung mit kontaktloser informationsuebertragung zwischen einem identifikator und einem identifikanden.
DE3483476D1 (de) * 1984-08-08 1990-11-29 Toshiba Kawasaki Kk Informationsmedium.
GB8420893D0 (en) * 1984-08-16 1984-09-19 Buttemer D A Transponder
GB2165723A (en) * 1984-10-16 1986-04-16 Alexander Francis Nixon Animal identification system
FR2601462B1 (fr) * 1986-07-10 1988-08-05 Dissuavol Sarl Procede de controle du deplacement d'objets, en particulier de vehicules automobiles
GB8700050D0 (en) * 1987-01-03 1987-07-08 Plessey Co Plc Security systems
JPH01148987A (ja) * 1987-12-05 1989-06-12 Kubota Ltd トラックスケール用トラック管理システム
CA1335676C (fr) * 1988-01-14 1995-05-23 Akira Iga Dispositif de transmission de donnees portatif et systeme utilisant ce dispositif
GB2225197A (en) * 1988-11-18 1990-05-23 Marconi Electronic Devices Location monitoring of moveable objects
FR2648593B1 (fr) * 1989-06-14 1992-08-21 Raimbault Pierre Procede et dispositif de comptabilisation et de controle d'articles
GB9313187D0 (en) * 1993-06-25 1993-08-11 Cotag Int Ltd Coding device
JPH07174845A (ja) * 1993-12-17 1995-07-14 Omron Corp 符号応答方法およびその方法を実施するための符号応答器並びにその符号応答器が用いられた符号応答システム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713148A (en) * 1970-05-21 1973-01-23 Communications Services Corp I Transponder apparatus and system
US3852755A (en) * 1971-07-22 1974-12-03 Raytheon Co Remotely powered transponder having a dipole antenna array
US3859624A (en) * 1972-09-05 1975-01-07 Thomas A Kriofsky Inductively coupled transmitter-responder arrangement

Also Published As

Publication number Publication date
GB1567750A (en) 1980-05-21
DE2642022A1 (de) 1977-04-07
IL50466A0 (en) 1976-11-30
AU1770376A (en) 1978-03-23
FR2325251A1 (fr) 1977-04-15
IL50466A (en) 1979-09-30
NL7610226A (nl) 1977-03-22
DK422076A (da) 1977-03-20
AU505686B2 (en) 1979-11-29
JPS5255890A (en) 1977-05-07

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Legal Events

Date Code Title Description
MKEX Expiry