JPS55158745A - Data transmission system using optical transmission line - Google Patents

Data transmission system using optical transmission line

Info

Publication number
JPS55158745A
JPS55158745A JP6586979A JP6586979A JPS55158745A JP S55158745 A JPS55158745 A JP S55158745A JP 6586979 A JP6586979 A JP 6586979A JP 6586979 A JP6586979 A JP 6586979A JP S55158745 A JPS55158745 A JP S55158745A
Authority
JP
Japan
Prior art keywords
converter
station
repeater
input
cut
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
JP6586979A
Other languages
Japanese (ja)
Other versions
JPS5827704B2 (en
Inventor
Takashi Hasegawa
Fusao Ishiguchi
Yoshitaka Yamamoto
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
Fuji Facom Corp
Original Assignee
Fujitsu 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 Fujitsu Ltd, Fuji Facom Corp filed Critical Fujitsu Ltd
Priority to JP54065869A priority Critical patent/JPS5827704B2/en
Publication of JPS55158745A publication Critical patent/JPS55158745A/en
Publication of JPS5827704B2 publication Critical patent/JPS5827704B2/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
    • H04B10/29—Repeaters

Abstract

PURPOSE:To make the repeater through in order to give no effect to the main line, by switching forcedly the input of the output converter to the side of the input converter before discontinuation of the function of the slave station in case the power supply is cut off for the slave station. CONSTITUTION:Master station M is connected several slave stations S via optical transmission line TL. And the data is transmitted via repeater SU provided to line TL which is provided in correspondence to stations M and S. Repeater SU includes input circuit RV containing the photoelectric converter plus output converter DV containing the electro-optic converter each. And gate G5 is closed with gate G3 opened each by output signal CBPS of detecting circuit DET in case the power supply is cut off for station S and in the process during which the voltage level of station S turns to zero. Thus the input of converter DV is switched forcedly to the side of converter RV before discontinuation of the function of station S. As a result, the repeater is made through at the cut-off time of the power supply to the slave station in order to avoid giving the effect to the main line.
JP54065869A 1979-05-28 1979-05-28 Data transmission system using optical transmission line Expired JPS5827704B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54065869A JPS5827704B2 (en) 1979-05-28 1979-05-28 Data transmission system using optical transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54065869A JPS5827704B2 (en) 1979-05-28 1979-05-28 Data transmission system using optical transmission line

Publications (2)

Publication Number Publication Date
JPS55158745A true JPS55158745A (en) 1980-12-10
JPS5827704B2 JPS5827704B2 (en) 1983-06-10

Family

ID=13299417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54065869A Expired JPS5827704B2 (en) 1979-05-28 1979-05-28 Data transmission system using optical transmission line

Country Status (1)

Country Link
JP (1) JPS5827704B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143148U (en) * 1983-03-15 1984-09-25 株式会社山武 Optical multiplex transmission equipment
JPS62254532A (en) * 1986-04-28 1987-11-06 Nec Corp Optical connecting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50123241A (en) * 1974-03-15 1975-09-27
JPS52111A (en) * 1975-06-23 1977-01-05 Hitachi Ltd Channel switching system
JPS5392602A (en) * 1977-01-26 1978-08-14 Toshiba Corp Control signal repeating installation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50123241A (en) * 1974-03-15 1975-09-27
JPS52111A (en) * 1975-06-23 1977-01-05 Hitachi Ltd Channel switching system
JPS5392602A (en) * 1977-01-26 1978-08-14 Toshiba Corp Control signal repeating installation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143148U (en) * 1983-03-15 1984-09-25 株式会社山武 Optical multiplex transmission equipment
JPS62254532A (en) * 1986-04-28 1987-11-06 Nec Corp Optical connecting device

Also Published As

Publication number Publication date
JPS5827704B2 (en) 1983-06-10

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