JPS57173248A - Simplex communication device - Google Patents

Simplex communication device

Info

Publication number
JPS57173248A
JPS57173248A JP56058095A JP5809581A JPS57173248A JP S57173248 A JPS57173248 A JP S57173248A JP 56058095 A JP56058095 A JP 56058095A JP 5809581 A JP5809581 A JP 5809581A JP S57173248 A JPS57173248 A JP S57173248A
Authority
JP
Japan
Prior art keywords
codes
selective call
telegraphic message
period
call signal
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
JP56058095A
Other languages
Japanese (ja)
Other versions
JPS637698B2 (en
Inventor
Tatsuro Kihara
Giichi Kitamura
Kenji Murabayashi
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.)
Anritsu Corp
Japan Radio Co Ltd
Nippon Telegraph and Telephone Corp
Nihon Musen KK
Original Assignee
Anritsu Corp
Japan Radio Co Ltd
Nippon Telegraph and Telephone Corp
Nihon Musen 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 Anritsu Corp, Japan Radio Co Ltd, Nippon Telegraph and Telephone Corp, Nihon Musen KK filed Critical Anritsu Corp
Priority to JP56058095A priority Critical patent/JPS57173248A/en
Publication of JPS57173248A publication Critical patent/JPS57173248A/en
Publication of JPS637698B2 publication Critical patent/JPS637698B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/10—Arrangements for initial synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To enable the same selective call signal and control singal with a CCIR system to be used even when sending a telegraphic message by the JIS codes, by selecting the JIS codes or No2 codes on the basis of the transmission time intervals of selective call signal blocks. CONSTITUTION:On CCIR counsel basis, the station name of a QCXT is transmitted from a transmitting station with a selective call signal as two blocks of a Q-RQ controlling singal -C and an X-T-RQ controlling signal at a 570 ms period when a telegraphic message employs the JIS codes or at a 450 ms period when the No2 codes. At a receiving station, when the reception intervals of two blocks of selective call signals are 570 ms, it is judged that the telegraphic message is sent by the JIS codes, and a seven-bit control singal of CCIR is transmitted at a 570 ms period 90 ms right after the selective call signal is received. When the reception intervals of the selective call signal are 450 ms, it is judged that the telegraphic message is sent by the No2 codes, and the control signal is transmitted at a 450 ms period. The transmitting station starts transmitting the telegraphic message when receiving the same control signal twice correctly at the same interval with the transmission time interval.
JP56058095A 1981-04-17 1981-04-17 Simplex communication device Granted JPS57173248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56058095A JPS57173248A (en) 1981-04-17 1981-04-17 Simplex communication device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56058095A JPS57173248A (en) 1981-04-17 1981-04-17 Simplex communication device

Publications (2)

Publication Number Publication Date
JPS57173248A true JPS57173248A (en) 1982-10-25
JPS637698B2 JPS637698B2 (en) 1988-02-18

Family

ID=13074385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56058095A Granted JPS57173248A (en) 1981-04-17 1981-04-17 Simplex communication device

Country Status (1)

Country Link
JP (1) JPS57173248A (en)

Also Published As

Publication number Publication date
JPS637698B2 (en) 1988-02-18

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