GB981031A - Improvements in electrical interrogator-responder signalling systems - Google Patents

Improvements in electrical interrogator-responder signalling systems

Info

Publication number
GB981031A
GB981031A GB4613/61A GB461361A GB981031A GB 981031 A GB981031 A GB 981031A GB 4613/61 A GB4613/61 A GB 4613/61A GB 461361 A GB461361 A GB 461361A GB 981031 A GB981031 A GB 981031A
Authority
GB
United Kingdom
Prior art keywords
signals
frequency
interrogator
carrier
discrete
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
GB4613/61A
Other languages
English (en)
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.)
General Precision Inc
Original Assignee
General Precision Inc
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 General Precision Inc filed Critical General Precision Inc
Publication of GB981031A publication Critical patent/GB981031A/en
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Near-Field Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB4613/61A 1960-02-15 1961-02-07 Improvements in electrical interrogator-responder signalling systems Expired GB981031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8723A US3018475A (en) 1960-02-15 1960-02-15 Responder device

Publications (1)

Publication Number Publication Date
GB981031A true GB981031A (en) 1965-01-20

Family

ID=21733290

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4613/61A Expired GB981031A (en) 1960-02-15 1961-02-07 Improvements in electrical interrogator-responder signalling systems

Country Status (5)

Country Link
US (1) US3018475A (US06272168-20010807-M00014.png)
JP (1) JPS3812758B1 (US06272168-20010807-M00014.png)
CH (1) CH391521A (US06272168-20010807-M00014.png)
DE (1) DE1416098B2 (US06272168-20010807-M00014.png)
GB (1) GB981031A (US06272168-20010807-M00014.png)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054100A (en) * 1958-06-04 1962-09-11 Gen Precision Inc Signalling system
US3836855A (en) * 1958-05-05 1974-09-17 Singer Co Modulating system
US3137847A (en) * 1959-11-04 1964-06-16 Link Aviation Inc Signalling system
DE1140245B (de) * 1961-01-27 1962-11-29 Siemens Ag Einrichtung in Anlagen zur selbsttaetigen drahtlosen UEbertragung von mehrstelligen Informationen zwischen gegeneinander beweglichen Abfrage- und Antwortgeraeten, insbesondere der Nummern von Eisenbahnfahrzeugen nach ortsfesten Abfragegeraeten
US3253588A (en) * 1962-02-01 1966-05-31 Lear Siegler Inc Bio-instrumentation apparatus
US3384892A (en) * 1966-11-07 1968-05-21 Philco Ford Corp Interrogator-responder signalling system
DK134666B (da) * 1970-02-20 1976-12-20 Svejsecentralen Fremgangsmåde til mærkning og senere lokalisering, identifikation og registrering af fysiske objekter samt elektronisk mærkningsoragn til anvendelse ved udøvelse af fremgangsmåden.
US3656132A (en) * 1970-05-26 1972-04-11 Joseph S Brumbelow Remote monitor system
US3689885A (en) * 1970-09-15 1972-09-05 Transitag Corp Inductively coupled passive responder and interrogator unit having multidimension electromagnetic field capabilities
US3806905A (en) * 1971-09-08 1974-04-23 Sperry Rand Corp Transducer and condition monitor
US4350982A (en) * 1974-06-03 1982-09-21 The United States Of America As Represented By The Secretary Of The Navy Frequency-agile transponder
SE413350B (sv) * 1978-08-25 1980-05-19 Stiftelsen Inst Mikrovags Anordning for synkroniserad mottagning i samband med anordning for registrering av foremal
US4471344A (en) * 1980-10-09 1984-09-11 Ici Americas Inc. Dual frequency anti-theft system
US4596988A (en) * 1983-06-10 1986-06-24 Wanka James T Remote controlled tracking transmitter and tracking support system
US4891650A (en) * 1988-05-16 1990-01-02 Trackmobile Inc. Vehicle location system
US5218367A (en) * 1992-06-01 1993-06-08 Trackmobile Vehicle tracking system
US8601606B2 (en) 2002-11-25 2013-12-03 Carolyn W. Hafeman Computer recovery or return

Also Published As

Publication number Publication date
DE1416098B2 (de) 1971-05-13
CH391521A (de) 1965-04-30
JPS3812758B1 (US06272168-20010807-M00014.png) 1963-07-20
US3018475A (en) 1962-01-23
DE1416098A1 (de) 1968-10-03

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