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JPS6484947A - Light repeating system - Google Patents

Light repeating system

Info

Publication number
JPS6484947A
JPS6484947A JP62242214A JP24221487A JPS6484947A JP S6484947 A JPS6484947 A JP S6484947A JP 62242214 A JP62242214 A JP 62242214A JP 24221487 A JP24221487 A JP 24221487A JP S6484947 A JPS6484947 A JP S6484947A
Authority
JP
Japan
Prior art keywords
signal
light
sent
electric
line
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.)
Pending
Application number
JP62242214A
Other languages
Japanese (ja)
Inventor
Yoshiki Kamata
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
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 filed Critical NEC Corp
Priority to JP62242214A priority Critical patent/JPS6484947A/en
Publication of JPS6484947A publication Critical patent/JPS6484947A/en
Pending legal-status Critical Current

Links

Landscapes

  • Detection And Prevention Of Errors In Transmission (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To distinguish an up line and a down line and to supervise a trouble by detecting the bit error and code rule infraction of a reflected signal. CONSTITUTION:A light signal from a light transmitting path 4 is converted to an electric signal by a light repeating circuit 5, thereafter, it is branched into two, one side is sent to the electric/optical converting part of the repeating circuit 5, and the other side is sent to a station signal selecting circuit 6. In the selecting circuit 6, when the signal is discriminated to be the reflected signal in a self station, a reflected instruction is sent to the repeating circuit 5, simultaneously, the signal is decoded, and it is restored to a protosignal. Further, the signal is encoded, sent to a light repeater 5', electric/optical-signal-converted here, and returned to the terminal station of a sending source through a light transmitting path 4' as a light signal string. In the terminal station, by detecting the bit error and code rule infraction of a receiving signal through the use of a measuring device, the error rate of the up line and down line can be detected.
JP62242214A 1987-09-25 1987-09-25 Light repeating system Pending JPS6484947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62242214A JPS6484947A (en) 1987-09-25 1987-09-25 Light repeating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62242214A JPS6484947A (en) 1987-09-25 1987-09-25 Light repeating system

Publications (1)

Publication Number Publication Date
JPS6484947A true JPS6484947A (en) 1989-03-30

Family

ID=17085942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62242214A Pending JPS6484947A (en) 1987-09-25 1987-09-25 Light repeating system

Country Status (1)

Country Link
JP (1) JPS6484947A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504611A (en) * 1993-06-14 1996-04-02 International Business Machines Corporation Apparatus for repowering and monitoring serial links

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504611A (en) * 1993-06-14 1996-04-02 International Business Machines Corporation Apparatus for repowering and monitoring serial links
US5642217A (en) * 1993-06-14 1997-06-24 International Business Machines Corporation Apparatus for repowering and monitoring serial links
US5673132A (en) * 1993-06-14 1997-09-30 International Business Machines Corporation Apparatus for repowering and monitoring serial links

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