CA1037124A - Information transmission system using a high frequency signal and its d.c. component and a harmonic - Google Patents

Information transmission system using a high frequency signal and its d.c. component and a harmonic

Info

Publication number
CA1037124A
CA1037124A CA213,537A CA213537A CA1037124A CA 1037124 A CA1037124 A CA 1037124A CA 213537 A CA213537 A CA 213537A CA 1037124 A CA1037124 A CA 1037124A
Authority
CA
Canada
Prior art keywords
signal
inquiry
reply
station
frequency
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
CA213,537A
Other languages
English (en)
French (fr)
Other versions
CA213537S (en
Inventor
Kjell O.I. Olsson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1037124A publication Critical patent/CA1037124A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/125—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using short-range radio transmission
    • 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
    • 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
    • B61L25/045—Indicating or recording train identities using reradiating tags
    • 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
    • G01S13/758—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 a signal generator powered by the interrogation signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
CA213,537A 1973-11-13 1974-11-12 Information transmission system using a high frequency signal and its d.c. component and a harmonic Expired CA1037124A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7315348A SE380220B (sv) 1973-11-13 1973-11-13 Informationsoverforingsanleggning for tradlos overforing med en fragestation och ett svarsdon

Publications (1)

Publication Number Publication Date
CA1037124A true CA1037124A (en) 1978-08-22

Family

ID=20319090

Family Applications (1)

Application Number Title Priority Date Filing Date
CA213,537A Expired CA1037124A (en) 1973-11-13 1974-11-12 Information transmission system using a high frequency signal and its d.c. component and a harmonic

Country Status (6)

Country Link
CA (1) CA1037124A (xx)
DE (1) DE2453647A1 (xx)
DK (1) DK587674A (xx)
FR (1) FR2251135A1 (xx)
NO (1) NO743872L (xx)
SE (1) SE380220B (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009179A1 (de) * 1980-03-11 1981-09-24 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren und vorrichtung zur erzeugung des antwortsignals einer einrichtung zur automatischen indentifizierung von objekten und/oder lebewesen
ZA829121B (en) * 1981-12-18 1983-09-28 Senelco Ltd Transmitter/responder systems
GB2112607B (en) * 1981-12-18 1986-01-02 Senelco Ltd Transmitter/responder systems
DE3242978A1 (de) * 1982-11-20 1984-05-24 Diehl GmbH & Co, 8500 Nürnberg Fernsteuereinrichtung, insbesondere fuer die steuerung von komfort-einwirkungen im sitz-bereich in der kabine von grossraum-verkehrsflugzeugen
DE3307579A1 (de) * 1983-03-03 1984-11-29 Jürgen Dipl.-Ing. 8017 Ebersberg Machate Einrichtung zur kontaktlosen abfrage eines zugehoerigen datentraegers
US4656463A (en) * 1983-04-21 1987-04-07 Intelli-Tech Corporation LIMIS systems, devices and methods
SE500030C2 (sv) * 1990-05-14 1994-03-21 Bengt Henoch Förfarande för att lagra komplicerade produkters livsdata

Also Published As

Publication number Publication date
FR2251135B1 (xx) 1979-05-25
SE7315348L (xx) 1975-05-14
DE2453647A1 (de) 1975-05-15
DK587674A (xx) 1975-07-07
SE380220B (sv) 1975-11-03
FR2251135A1 (en) 1975-06-06
NO743872L (xx) 1975-06-09

Similar Documents

Publication Publication Date Title
CA1060954A (en) Transponder system for the transfer of signalling information for rail-bounded vehicles
CA1055588A (en) Transponder for an automatic vehicle identification system
US4019181A (en) Transponder system
US5479442A (en) Spectrum spread receiver and spectrum spread transmitter-receiver including same
JP2612190B2 (ja) 応答装置と質問装置からなる全二重通信装置
GB1488850A (en) Electronic identification system
US20050272383A1 (en) Transmitter and a method for transmitting data
CA2014772A1 (en) Transmission link
CA1037124A (en) Information transmission system using a high frequency signal and its d.c. component and a harmonic
US3406391A (en) Vehicle identification system
GB2238210A (en) Transponder with code identification circuit having a surface acoustic wave device filter
EP0572379B1 (en) A method for the contactless transmission of information
US4358765A (en) Apparatus for producing a single side band
CA1245752A (en) Passive radar responder
US4333078A (en) Apparatus for synchronized reception in connection with system for recording objects
US7978073B2 (en) Transmitter and a method for transmitting data
US3982243A (en) Device for transmission of information from an information emitter to an information seeker
US4185241A (en) Communications system using time position modulation and correlation slope demodulation
US2812428A (en) Passive responder radio system
CA1131738A (en) Airborne or ground station for a radio navigation system and particularly a dme system
EP0845751B1 (en) A transponder system
US3448383A (en) Single frequency communication repeater
EP0666989A1 (de) Verfahren und schaltungsanordnungen zur datenübertragung zwischen einer abfrage- und einer antwortstation
GB1178614A (en) Apparatus for use in Identifying an Object
DE3010264C2 (de) Verfahren zur Datenübertragung mittels Mikrowellen und Anordnung zur Durchführung des Verfahrens