JPS56137749A - Synchronism establishment system - Google Patents

Synchronism establishment system

Info

Publication number
JPS56137749A
JPS56137749A JP4090180A JP4090180A JPS56137749A JP S56137749 A JPS56137749 A JP S56137749A JP 4090180 A JP4090180 A JP 4090180A JP 4090180 A JP4090180 A JP 4090180A JP S56137749 A JPS56137749 A JP S56137749A
Authority
JP
Japan
Prior art keywords
held
circuit
low level
output
communication
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
JP4090180A
Other languages
Japanese (ja)
Other versions
JPH0361384B2 (en
Inventor
Hiroshi Shimizu
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4090180A priority Critical patent/JPS56137749A/en
Priority to US06/245,281 priority patent/US4404672A/en
Priority to DE8181102349T priority patent/DE3171775D1/en
Priority to EP81102349A priority patent/EP0037107B1/en
Priority to AU68841/81A priority patent/AU537975B2/en
Priority to CA000374013A priority patent/CA1163734A/en
Publication of JPS56137749A publication Critical patent/JPS56137749A/en
Publication of JPH0361384B2 publication Critical patent/JPH0361384B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • 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
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To reduce power consumption when communication is intermitted by eliminating the need for burst communication for holding the synchronism between a master device and subordinate device when the communication is intermitted and by activating only a circuit which detects the reception of an origination request signal and a synchronizing circuit at the subordinate device side. CONSTITUTION:After end information of signal bits is transmitted, the output of origination control circuit 26 is held at the low level with control signal 31. Line driver 21 is disabled and line receiver 22 is enabled at any time and held in standby. Subscriber's circuit 10, on the other hand, holds the output of transmission control circuit 17 at the low level with control signal 7 simultaneously with the reception of the end information from digital subscriber's terminal 20. The output of gate 18 is held at the low level and while line driver 11 is disabled, line receiver 12 is enabled at any time and held in standby.
JP4090180A 1980-03-28 1980-03-28 Synchronism establishment system Granted JPS56137749A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP4090180A JPS56137749A (en) 1980-03-28 1980-03-28 Synchronism establishment system
US06/245,281 US4404672A (en) 1980-03-28 1981-03-19 Subscriber terminal for use in a time shared bidirectional digital communication network
DE8181102349T DE3171775D1 (en) 1980-03-28 1981-03-27 Subscriber terminal for use in a time shared bidirectional digital communication network
EP81102349A EP0037107B1 (en) 1980-03-28 1981-03-27 Subscriber terminal for use in a time shared bidirectional digital communication network
AU68841/81A AU537975B2 (en) 1980-03-28 1981-03-27 Subscriber terminal for digital network
CA000374013A CA1163734A (en) 1980-03-28 1981-03-27 Subscriber terminal for use in a time shared bidirectional digital communication network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4090180A JPS56137749A (en) 1980-03-28 1980-03-28 Synchronism establishment system

Publications (2)

Publication Number Publication Date
JPS56137749A true JPS56137749A (en) 1981-10-27
JPH0361384B2 JPH0361384B2 (en) 1991-09-19

Family

ID=12593407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4090180A Granted JPS56137749A (en) 1980-03-28 1980-03-28 Synchronism establishment system

Country Status (1)

Country Link
JP (1) JPS56137749A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528716A (en) * 1975-07-11 1977-01-22 Chiba Tsushin Kogyo Kk Synchronous system in simultaneous communication
JPS53148937A (en) * 1977-06-01 1978-12-26 Hitachi Ltd Data transfer system
JPS5424506A (en) * 1977-07-26 1979-02-23 Hitachi Ltd Modem control unit of semi-double type

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528716A (en) * 1975-07-11 1977-01-22 Chiba Tsushin Kogyo Kk Synchronous system in simultaneous communication
JPS53148937A (en) * 1977-06-01 1978-12-26 Hitachi Ltd Data transfer system
JPS5424506A (en) * 1977-07-26 1979-02-23 Hitachi Ltd Modem control unit of semi-double type

Also Published As

Publication number Publication date
JPH0361384B2 (en) 1991-09-19

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