JPS5668039A - Two-way light communication system - Google Patents

Two-way light communication system

Info

Publication number
JPS5668039A
JPS5668039A JP14388979A JP14388979A JPS5668039A JP S5668039 A JPS5668039 A JP S5668039A JP 14388979 A JP14388979 A JP 14388979A JP 14388979 A JP14388979 A JP 14388979A JP S5668039 A JPS5668039 A JP S5668039A
Authority
JP
Japan
Prior art keywords
control part
transmitted
data
signal
transmission
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
JP14388979A
Other languages
Japanese (ja)
Other versions
JPS5929979B2 (en
Inventor
Fumihiko Takezoe
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.)
Fuji Electric Co Ltd
Fuji Facom Corp
Original Assignee
Fuji Electric Co Ltd
Fuji Facom 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 Fuji Electric Co Ltd, Fuji Facom Corp filed Critical Fuji Electric Co Ltd
Priority to JP54143889A priority Critical patent/JPS5929979B2/en
Publication of JPS5668039A publication Critical patent/JPS5668039A/en
Publication of JPS5929979B2 publication Critical patent/JPS5929979B2/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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2587—Arrangements specific to fibre transmission using a single light source for multiple stations

Abstract

PURPOSE:To simplify the constitution of device B by constituting device B so that light to be transmitted from device A can be modulated according to data to be transmitted before being transmitted. CONSTITUTION:Transmission-reception control part 8a of device A transmits data to be transmitted by turning on electrophoto converter 3a by pulse-width modulation. This light signal is transferred to photoelectric converte 4b of device B. Transmission-reception control part 8b of device B fetches the data by series-parallel conversion. Next, control part 8a enters the data reception mode and at this time, a signal long in pulse width is transferred to device B in series. In device B, a control signal is supplied from control part 8b to variable branching device 9 according to the data to be transmitted and the quantity of light sent from branching device 9 back to device A is controlled. In device A, the transmitted light signal is received by converter 4a and control part 8a diciphers and fetches this signal. Thus, the circuit constitution of the transmission-reception control part of device B is simplified.
JP54143889A 1979-11-08 1979-11-08 Bidirectional optical communication system Expired JPS5929979B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54143889A JPS5929979B2 (en) 1979-11-08 1979-11-08 Bidirectional optical communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54143889A JPS5929979B2 (en) 1979-11-08 1979-11-08 Bidirectional optical communication system

Publications (2)

Publication Number Publication Date
JPS5668039A true JPS5668039A (en) 1981-06-08
JPS5929979B2 JPS5929979B2 (en) 1984-07-24

Family

ID=15349383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54143889A Expired JPS5929979B2 (en) 1979-11-08 1979-11-08 Bidirectional optical communication system

Country Status (1)

Country Link
JP (1) JPS5929979B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121833A (en) * 1983-12-06 1985-06-29 Nec Corp Two-way optical transmission system
JPS61208326A (en) * 1985-03-12 1986-09-16 Fujitsu Ltd Optical communication system
JPS63169836A (en) * 1987-01-08 1988-07-13 Fujitsu Ltd Optical communication system
JP2005333311A (en) * 2004-05-19 2005-12-02 Chugoku Electric Power Co Inc:The Fault recovery method in two-core two-way communication network

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121833A (en) * 1983-12-06 1985-06-29 Nec Corp Two-way optical transmission system
JPS61208326A (en) * 1985-03-12 1986-09-16 Fujitsu Ltd Optical communication system
JPS63169836A (en) * 1987-01-08 1988-07-13 Fujitsu Ltd Optical communication system
JP2005333311A (en) * 2004-05-19 2005-12-02 Chugoku Electric Power Co Inc:The Fault recovery method in two-core two-way communication network

Also Published As

Publication number Publication date
JPS5929979B2 (en) 1984-07-24

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