JPS5419318A - Synchronous protection circuit - Google Patents

Synchronous protection circuit

Info

Publication number
JPS5419318A
JPS5419318A JP8443677A JP8443677A JPS5419318A JP S5419318 A JPS5419318 A JP S5419318A JP 8443677 A JP8443677 A JP 8443677A JP 8443677 A JP8443677 A JP 8443677A JP S5419318 A JPS5419318 A JP S5419318A
Authority
JP
Japan
Prior art keywords
protection circuit
synchronous protection
synchronism
signal
synchronous
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
JP8443677A
Other languages
Japanese (ja)
Other versions
JPS5816777B2 (en
Inventor
Masao Yamazawa
Takao Moriya
Tetsuo Soejima
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP52084436A priority Critical patent/JPS5816777B2/en
Publication of JPS5419318A publication Critical patent/JPS5419318A/en
Publication of JPS5816777B2 publication Critical patent/JPS5816777B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To perform sure synchronous protection, by up counting the constant nmu grater than two constants determined each frame with the error detection pulse and by respectively discriminating the synchronism with the underflor signal and the out of synchronism with the overflow signal.
JP52084436A 1977-07-14 1977-07-14 Synchronous protection circuit Expired JPS5816777B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52084436A JPS5816777B2 (en) 1977-07-14 1977-07-14 Synchronous protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52084436A JPS5816777B2 (en) 1977-07-14 1977-07-14 Synchronous protection circuit

Publications (2)

Publication Number Publication Date
JPS5419318A true JPS5419318A (en) 1979-02-14
JPS5816777B2 JPS5816777B2 (en) 1983-04-02

Family

ID=13830531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52084436A Expired JPS5816777B2 (en) 1977-07-14 1977-07-14 Synchronous protection circuit

Country Status (1)

Country Link
JP (1) JPS5816777B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07209253A (en) * 1994-01-19 1995-08-11 Honda Motor Co Ltd Automatic magnetic flaw detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07209253A (en) * 1994-01-19 1995-08-11 Honda Motor Co Ltd Automatic magnetic flaw detector

Also Published As

Publication number Publication date
JPS5816777B2 (en) 1983-04-02

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