FI57671B - Anordning foer oeverfoering av information fraon en informationsgivare till en informationssoekare - Google Patents

Anordning foer oeverfoering av information fraon en informationsgivare till en informationssoekare Download PDF

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Publication number
FI57671B
FI57671B FI3400/74A FI340074A FI57671B FI 57671 B FI57671 B FI 57671B FI 3400/74 A FI3400/74 A FI 3400/74A FI 340074 A FI340074 A FI 340074A FI 57671 B FI57671 B FI 57671B
Authority
FI
Finland
Prior art keywords
information
signal
frequency
modulation
transmitted
Prior art date
Application number
FI3400/74A
Other languages
English (en)
Swedish (sv)
Other versions
FI340074A (fi
FI57671C (fi
Inventor
Per-Olof Gerhard Gustavsson
Bo Anders Morwing
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of FI340074A publication Critical patent/FI340074A/fi
Publication of FI57671B publication Critical patent/FI57671B/fi
Application granted granted Critical
Publication of FI57671C publication Critical patent/FI57671C/fi

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02Devices 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
    • B61L3/08Devices 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
    • B61L3/12Devices 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
    • B61L3/125Devices 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S13/00Systems 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
    • G01S13/74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/825Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted with exchange of information between interrogator and responder

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Alarm Systems (AREA)
FI3400/74A 1973-11-30 1974-11-25 Anordning foer oeverfoering av information fraon en informationsgivare till en informationssoekare FI57671C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7316256 1973-11-30
SE7316256A SE388102B (sv) 1973-11-30 1973-11-30 Anleggning for automatisk overforing av information fran en informationsgivare till en informationssokare

Publications (3)

Publication Number Publication Date
FI340074A FI340074A (fi) 1975-05-31
FI57671B true FI57671B (fi) 1980-05-30
FI57671C FI57671C (fi) 1980-09-10

Family

ID=20319254

Family Applications (1)

Application Number Title Priority Date Filing Date
FI3400/74A FI57671C (fi) 1973-11-30 1974-11-25 Anordning foer oeverfoering av information fraon en informationsgivare till en informationssoekare

Country Status (10)

Country Link
US (1) US3982243A (fi)
AT (1) AT350105B (fi)
CH (1) CH580375A5 (fi)
DK (1) DK141469B (fi)
FI (1) FI57671C (fi)
FR (1) FR2253339B1 (fi)
GB (1) GB1489901A (fi)
NL (1) NL185380C (fi)
NO (1) NO136868C (fi)
SE (1) SE388102B (fi)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207569A (en) * 1977-08-09 1980-06-10 Meyer Jack R Railroad radio frequency waveguide
US4551725A (en) * 1981-09-07 1985-11-05 Compagnie Des Montres Longines Francillon S.A. System for identification and determination of the moment of passage of a multiple number of moving bodies at a given point on their path
US4654528A (en) * 1984-11-01 1987-03-31 E-Systems, Inc. Radiation level reporting system
US5701121A (en) * 1988-04-11 1997-12-23 Uniscan Ltd. Transducer and interrogator device
JPH0772907B2 (ja) * 1989-12-21 1995-08-02 三菱電機株式会社 マイクロコンピュータ及びこれを用いた非接触icカード
EP1011167A4 (en) * 1998-07-02 2005-10-12 Matsushita Electric Ind Co Ltd ANTENNA, COMMUNICATION EQUIPMENT AND DIGITAL TELEVISION RECEIVER
JP2001177326A (ja) 1999-10-08 2001-06-29 Matsushita Electric Ind Co Ltd アンテナ装置、通信システム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1178614A (en) * 1966-03-02 1970-01-21 Tokyo Shibaura Electric Co Apparatus for use in Identifying an Object
US3406391A (en) * 1967-02-13 1968-10-15 Mihran Le Von Jr. Vehicle identification system
US3389391A (en) * 1967-05-05 1968-06-18 Miner S Keeler Vehicle identification responder
US3427614A (en) * 1967-04-26 1969-02-11 Jorgen P Vinding Wireless and radioless (nonradiant) telemetry system for monitoring conditions
GB1206925A (en) * 1968-02-03 1970-09-30 Tokyo Shibaura Electric Co Object identification system
US3713148A (en) * 1970-05-21 1973-01-23 Communications Services Corp I Transponder apparatus and system
US3745569A (en) * 1971-07-22 1973-07-10 Raytheon Co Remotely powered transponder

Also Published As

Publication number Publication date
US3982243A (en) 1976-09-21
SE388102B (sv) 1976-09-20
DE2454311B2 (de) 1977-06-08
NO136868B (no) 1977-08-08
DK141469B (da) 1980-03-17
DK620574A (fi) 1975-07-28
NL185380C (nl) 1990-03-16
DK141469C (fi) 1980-09-08
DE2454311A1 (de) 1975-06-12
NO136868C (no) 1977-11-16
FI340074A (fi) 1975-05-31
SE7316256L (fi) 1975-06-02
NL7415609A (nl) 1975-06-03
FR2253339A1 (fi) 1975-06-27
CH580375A5 (fi) 1976-09-30
ATA930574A (de) 1978-10-15
NL185380B (nl) 1989-10-16
GB1489901A (en) 1977-10-26
AT350105B (de) 1979-05-10
FR2253339B1 (fi) 1978-07-07
NO744311L (fi) 1975-06-23
FI57671C (fi) 1980-09-10

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