JPS51134509A - Fault repeater detection system - Google Patents

Fault repeater detection system

Info

Publication number
JPS51134509A
JPS51134509A JP5871275A JP5871275A JPS51134509A JP S51134509 A JPS51134509 A JP S51134509A JP 5871275 A JP5871275 A JP 5871275A JP 5871275 A JP5871275 A JP 5871275A JP S51134509 A JPS51134509 A JP S51134509A
Authority
JP
Japan
Prior art keywords
detection system
fault
repeater detection
fault repeater
phase
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
JP5871275A
Other languages
Japanese (ja)
Other versions
JPS6013347B2 (en
Inventor
Yukio Takimoto
Tadao Shimamura
Makoto Washio
Hideki Ishio
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
NTT Inc
Original Assignee
NEC Corp
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5871275A priority Critical patent/JPS6013347B2/en
Publication of JPS51134509A publication Critical patent/JPS51134509A/en
Publication of JPS6013347B2 publication Critical patent/JPS6013347B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04L1/24—Testing correct operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:Simplified long period reception and constant detection of the test pattern free from the change of demodulation pulse polarity in the fault repeater detection of carrier wave digital communication circuit as in the 4-phase phase mudulation system.
JP5871275A 1975-05-19 1975-05-19 Fault repeater detection method Expired JPS6013347B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5871275A JPS6013347B2 (en) 1975-05-19 1975-05-19 Fault repeater detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5871275A JPS6013347B2 (en) 1975-05-19 1975-05-19 Fault repeater detection method

Publications (2)

Publication Number Publication Date
JPS51134509A true JPS51134509A (en) 1976-11-22
JPS6013347B2 JPS6013347B2 (en) 1985-04-06

Family

ID=13092095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5871275A Expired JPS6013347B2 (en) 1975-05-19 1975-05-19 Fault repeater detection method

Country Status (1)

Country Link
JP (1) JPS6013347B2 (en)

Also Published As

Publication number Publication date
JPS6013347B2 (en) 1985-04-06

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