JPS5676648A - Control system for multipoint line - Google Patents

Control system for multipoint line

Info

Publication number
JPS5676648A
JPS5676648A JP15366079A JP15366079A JPS5676648A JP S5676648 A JPS5676648 A JP S5676648A JP 15366079 A JP15366079 A JP 15366079A JP 15366079 A JP15366079 A JP 15366079A JP S5676648 A JPS5676648 A JP S5676648A
Authority
JP
Japan
Prior art keywords
photoelectric conversion
optical
station
itself
transmission 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
JP15366079A
Other languages
Japanese (ja)
Inventor
Yoshitsugu Yamanashi
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 JP15366079A priority Critical patent/JPS5676648A/en
Publication of JPS5676648A publication Critical patent/JPS5676648A/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
    • H04B10/278—Bus-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 enable the line control of multipoint constitution special to optical communication, by coupling the terminal itself and the optical transmission line, when the terminal itself is selected from the selecting signal from the central terminal. CONSTITUTION:Photocouplers 6-8 detect whether or not the station data MODEM of itself is detected with photoelectric conversion sections 6b-8b, and it the station data MODEM of itself is selected, the photoelectric conversion section is cut off to couple the station optical data MODEMs 2-4 with the optical transmission line 5. If the station optical data MODEM is not selected, the photoelectric conversion section is made to throughstate to make through the optical transmission line. The photoelectric conversion section of the photocouplers is always kept to operation to detect the selecting signal, and if the section is not in operating state, the optical couplers are made to through-state at all times.
JP15366079A 1979-11-29 1979-11-29 Control system for multipoint line Pending JPS5676648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15366079A JPS5676648A (en) 1979-11-29 1979-11-29 Control system for multipoint line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15366079A JPS5676648A (en) 1979-11-29 1979-11-29 Control system for multipoint line

Publications (1)

Publication Number Publication Date
JPS5676648A true JPS5676648A (en) 1981-06-24

Family

ID=15567387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15366079A Pending JPS5676648A (en) 1979-11-29 1979-11-29 Control system for multipoint line

Country Status (1)

Country Link
JP (1) JPS5676648A (en)

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