JPS57181242A - Communication system for moving body - Google Patents

Communication system for moving body

Info

Publication number
JPS57181242A
JPS57181242A JP56066000A JP6600081A JPS57181242A JP S57181242 A JPS57181242 A JP S57181242A JP 56066000 A JP56066000 A JP 56066000A JP 6600081 A JP6600081 A JP 6600081A JP S57181242 A JPS57181242 A JP S57181242A
Authority
JP
Japan
Prior art keywords
output
antenna
gate
base station
generated
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.)
Pending
Application number
JP56066000A
Other languages
Japanese (ja)
Inventor
Yasuo Murazumi
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP56066000A priority Critical patent/JPS57181242A/en
Publication of JPS57181242A publication Critical patent/JPS57181242A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To secure radio communication wherein the reception of an abnormal signal is stopped by judging a base station to be opposed by using discrimination signals characteristic to respective base station and the detection signal of a ground body, and then selecting the antenna of a moving body. CONSTITUTION:When a train passes on a ground body GL1 and enters some zone, a radio wave from the antenna of a base station BS1 is received. Then, a detection output (BS1) and a count output (GL1) are generated, and the output of an AND gate G1 is supplied through an OR gate G11 to a switch SF, which turns on. A reception output by an antenna AF is selected and sent out to an output terminal OUT. Then when the train passes on a ground body GL2 and enters a next zone, the detection output (BS1) is generated and a count output (GL2) is generated; and the output of an AND gate G2 is supplied through an OR gate G12 to a switch SR. Then, a reception output by an antenna AR is selected.
JP56066000A 1981-04-30 1981-04-30 Communication system for moving body Pending JPS57181242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56066000A JPS57181242A (en) 1981-04-30 1981-04-30 Communication system for moving body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56066000A JPS57181242A (en) 1981-04-30 1981-04-30 Communication system for moving body

Publications (1)

Publication Number Publication Date
JPS57181242A true JPS57181242A (en) 1982-11-08

Family

ID=13303239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56066000A Pending JPS57181242A (en) 1981-04-30 1981-04-30 Communication system for moving body

Country Status (1)

Country Link
JP (1) JPS57181242A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001005065A1 (en) * 1999-07-07 2001-01-18 Sumitomo Electric Industries, Ltd. Roadside transmitter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001005065A1 (en) * 1999-07-07 2001-01-18 Sumitomo Electric Industries, Ltd. Roadside transmitter
US6397067B1 (en) 1999-07-07 2002-05-28 Sumitomo Electric Industries, Ltd. Roadside transmitter

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