JPS5784637A - Optical loop transmission system - Google Patents

Optical loop transmission system

Info

Publication number
JPS5784637A
JPS5784637A JP55161559A JP16155980A JPS5784637A JP S5784637 A JPS5784637 A JP S5784637A JP 55161559 A JP55161559 A JP 55161559A JP 16155980 A JP16155980 A JP 16155980A JP S5784637 A JPS5784637 A JP S5784637A
Authority
JP
Japan
Prior art keywords
control section
section
loop
transmission
optical
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
JP55161559A
Other languages
Japanese (ja)
Inventor
Hiroshi Kadonaga
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55161559A priority Critical patent/JPS5784637A/en
Publication of JPS5784637A publication Critical patent/JPS5784637A/en
Pending 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
    • H04B10/27—Arrangements for networking
    • 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
    • H04B10/27—Arrangements for networking
    • H04B10/275—Ring-type networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To simplify the system constitution and to keep high reliability, by providing an optical switch section corresponding to each remote station and remote station status monitoring section in a center station. CONSTITUTION:A CS control section in a center station CS1 reads the operation state of each RS from a remote station RS status monitoring section 16, correspondingly optical switches OSW1-OSWn, 14a-14n corresponding to each RS are turned on and off via an optical switch control section 15 to complete the optical transmission loop. If transmission error is detected at a loop control section 12, a control section 11 checks the operation status change of each RS via the monitoring section 16 and disconnects a failed RS from the optical transmission line. The control section 11 turns off the OSW14a-14n, and after the execution of loop transmission in the CS, the loop transmission is made sequentially to each RS to discriminate the disconnected transmission line.
JP55161559A 1980-11-17 1980-11-17 Optical loop transmission system Pending JPS5784637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55161559A JPS5784637A (en) 1980-11-17 1980-11-17 Optical loop transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55161559A JPS5784637A (en) 1980-11-17 1980-11-17 Optical loop transmission system

Publications (1)

Publication Number Publication Date
JPS5784637A true JPS5784637A (en) 1982-05-27

Family

ID=15737403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55161559A Pending JPS5784637A (en) 1980-11-17 1980-11-17 Optical loop transmission system

Country Status (1)

Country Link
JP (1) JPS5784637A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126340A (en) * 1983-01-06 1984-07-20 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン Circuit device for connecting interface to remote function unit
JPS60190040A (en) * 1984-03-09 1985-09-27 Mitsubishi Electric Corp Information transmission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126340A (en) * 1983-01-06 1984-07-20 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン Circuit device for connecting interface to remote function unit
JPH03936B2 (en) * 1983-01-06 1991-01-09 Intaanashonaru Bijinesu Mashiinzu Corp
JPS60190040A (en) * 1984-03-09 1985-09-27 Mitsubishi Electric Corp Information transmission system

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