JPS5575355A - Signal monitor system - Google Patents

Signal monitor system

Info

Publication number
JPS5575355A
JPS5575355A JP14864078A JP14864078A JPS5575355A JP S5575355 A JPS5575355 A JP S5575355A JP 14864078 A JP14864078 A JP 14864078A JP 14864078 A JP14864078 A JP 14864078A JP S5575355 A JPS5575355 A JP S5575355A
Authority
JP
Japan
Prior art keywords
main signal
signal
reception
switch
turned
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
JP14864078A
Other languages
Japanese (ja)
Other versions
JPS5851698B2 (en
Inventor
Satoshi Ikeuchi
Masanori Honda
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 JP53148640A priority Critical patent/JPS5851698B2/en
Publication of JPS5575355A publication Critical patent/JPS5575355A/en
Publication of JPS5851698B2 publication Critical patent/JPS5851698B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To eliminate the erroneous main signal caused by the shot noise or the like by receiving the signal showing the input break of the main signal detected through the transmission part at the pattern detection part at the reception part and then turning off both the switch and the system of the main signal. CONSTITUTION:Transmission part 11 transmits the main signal to reception part 12 via optical fiber 13. When signal monitor part 21 detects the input break of the main signal at part 11, switch part 22 operates to give discontinuation to the main signal system linking to electricity/light converter 15 as well as to transmit the detection signal to part 12. On the other hand, with reception of the break detection signal at part 12 and via pattern detector 25, switch part 26 is turned off. Thus the system of the main signal is turned off, ensuring elimination of the erroneous main signal caused by the shot noise or the like.
JP53148640A 1978-12-02 1978-12-02 Signal monitoring method Expired JPS5851698B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53148640A JPS5851698B2 (en) 1978-12-02 1978-12-02 Signal monitoring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53148640A JPS5851698B2 (en) 1978-12-02 1978-12-02 Signal monitoring method

Publications (2)

Publication Number Publication Date
JPS5575355A true JPS5575355A (en) 1980-06-06
JPS5851698B2 JPS5851698B2 (en) 1983-11-17

Family

ID=15457305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53148640A Expired JPS5851698B2 (en) 1978-12-02 1978-12-02 Signal monitoring method

Country Status (1)

Country Link
JP (1) JPS5851698B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514218A1 (en) * 1981-10-02 1983-04-08 Merlin Gerin FIBER OPTICAL TELETRANSMISSION SYSTEM

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514218A1 (en) * 1981-10-02 1983-04-08 Merlin Gerin FIBER OPTICAL TELETRANSMISSION SYSTEM

Also Published As

Publication number Publication date
JPS5851698B2 (en) 1983-11-17

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