JPS5539475A - Radio transmission system for traffic control - Google Patents

Radio transmission system for traffic control

Info

Publication number
JPS5539475A
JPS5539475A JP11337178A JP11337178A JPS5539475A JP S5539475 A JPS5539475 A JP S5539475A JP 11337178 A JP11337178 A JP 11337178A JP 11337178 A JP11337178 A JP 11337178A JP S5539475 A JPS5539475 A JP S5539475A
Authority
JP
Japan
Prior art keywords
transmission
time
information
terminal unit
repetitive cycle
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.)
Granted
Application number
JP11337178A
Other languages
Japanese (ja)
Other versions
JPS601988B2 (en
Inventor
Yoshio Sasajima
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.)
Nippon Signal Co Ltd
Original Assignee
Nippon Signal Co Ltd
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 Nippon Signal Co Ltd filed Critical Nippon Signal Co Ltd
Priority to JP11337178A priority Critical patent/JPS601988B2/en
Publication of JPS5539475A publication Critical patent/JPS5539475A/en
Publication of JPS601988B2 publication Critical patent/JPS601988B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/18—Arrangements for synchronising broadcast or distribution via plural systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting
    • G08G1/094—Hardware aspects; Signal processing or signal properties, e.g. frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/26—Arrangements for switching distribution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/42—Arrangements for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To realize the transmission of the information about the carriers of the same frequency sent from several terminal units to the line concentrator by including the identification information of the terminal unit and the generation information of the terminal within the time of 1/4 minimum repetitive cycle and then carrying out the repetitive transmission during the transmission period. CONSTITUTION:Antenna switch circuit 5 is operated with the equal time interval by the output of the communication control part of transmitters of terminal units S-1, S-2...S-N, thus securing intermittence between communication filter 4 and transmission antenna 6. In other words, the 1st terminal unit features repetitive cycle T and transmission time T/2, the 2nd terminal unit features repetitive cycle 2T and transmission time T, and thus in the same way final terminal unit S-N features repetitive cycle 2N<-1>XT and transmission time 2N<-1>XT/2, thus repeating the transmission and discontinuation of transmission. Line concentrator CL-1 receives correctly the information from each terminal unit within the time of 1/4 minimum repetitive cycle and within time 2N<-1>XT. In this way, the information can be transmitted to the line concentrator from several terminal units using carriers of the same frequency.
JP11337178A 1978-09-14 1978-09-14 Wireless transmission system for traffic control Expired JPS601988B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11337178A JPS601988B2 (en) 1978-09-14 1978-09-14 Wireless transmission system for traffic control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11337178A JPS601988B2 (en) 1978-09-14 1978-09-14 Wireless transmission system for traffic control

Publications (2)

Publication Number Publication Date
JPS5539475A true JPS5539475A (en) 1980-03-19
JPS601988B2 JPS601988B2 (en) 1985-01-18

Family

ID=14610581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11337178A Expired JPS601988B2 (en) 1978-09-14 1978-09-14 Wireless transmission system for traffic control

Country Status (1)

Country Link
JP (1) JPS601988B2 (en)

Also Published As

Publication number Publication date
JPS601988B2 (en) 1985-01-18

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