FR2176067A1 - - Google Patents

Info

Publication number
FR2176067A1
FR2176067A1 FR7309177A FR7309177A FR2176067A1 FR 2176067 A1 FR2176067 A1 FR 2176067A1 FR 7309177 A FR7309177 A FR 7309177A FR 7309177 A FR7309177 A FR 7309177A FR 2176067 A1 FR2176067 A1 FR 2176067A1
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.)
Withdrawn
Application number
FR7309177A
Other languages
French (fr)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of FR2176067A1 publication Critical patent/FR2176067A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/08—Calling by using continuous ac
    • H04Q9/12—Calling by using continuous ac using combinations of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Selective Calling Equipment (AREA)
  • Traffic Control Systems (AREA)
  • Near-Field Transmission Systems (AREA)
FR7309177A 1972-03-15 1973-03-14 Withdrawn FR2176067A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE327972A SE388101B (en) 1972-03-15 1972-03-15 AUTOMATIC TRANSMISSION OF INFORMATION INCLUDING AN INFORMATION SEARCHER AND AN INFORMATION PROVIDER IN WHICH AN INFORMATION SEX SIGNAL GIVES AN INFORMATION SIGNAL SIGNAL FROM THIS ISSUE

Publications (1)

Publication Number Publication Date
FR2176067A1 true FR2176067A1 (en) 1973-10-26

Family

ID=20261770

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7309177A Withdrawn FR2176067A1 (en) 1972-03-15 1973-03-14

Country Status (7)

Country Link
DE (1) DE2311948A1 (en)
DK (1) DK134730B (en)
FR (1) FR2176067A1 (en)
GB (1) GB1431303A (en)
NL (1) NL7303279A (en)
NO (1) NO137253C (en)
SE (1) SE388101B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313824A1 (en) * 1975-03-27 1976-12-31 Stiftelsen Inst Mikrovags DEVICE FOR REGISTERING OBJECTS
FR2386050A1 (en) * 1977-03-30 1978-10-27 Tokyo Shibaura Electric Co OBJECT IDENTIFICATION DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313824A1 (en) * 1975-03-27 1976-12-31 Stiftelsen Inst Mikrovags DEVICE FOR REGISTERING OBJECTS
FR2386050A1 (en) * 1977-03-30 1978-10-27 Tokyo Shibaura Electric Co OBJECT IDENTIFICATION DEVICE

Also Published As

Publication number Publication date
DE2311948A1 (en) 1973-09-20
DK134730C (en) 1977-05-31
GB1431303A (en) 1976-04-07
SE388101B (en) 1976-09-20
NL7303279A (en) 1973-09-18
NO137253C (en) 1978-02-01
DK134730B (en) 1977-01-03
NO137253B (en) 1977-10-17

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Legal Events

Date Code Title Description
ST Notification of lapse