JPS56149133A - Optical data link - Google Patents

Optical data link

Info

Publication number
JPS56149133A
JPS56149133A JP5248180A JP5248180A JPS56149133A JP S56149133 A JPS56149133 A JP S56149133A JP 5248180 A JP5248180 A JP 5248180A JP 5248180 A JP5248180 A JP 5248180A JP S56149133 A JPS56149133 A JP S56149133A
Authority
JP
Japan
Prior art keywords
signal
circuit
optical
light communication
communication device
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
JP5248180A
Other languages
Japanese (ja)
Other versions
JPS6341456B2 (en
Inventor
Takeshi Usui
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
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5248180A priority Critical patent/JPS56149133A/en
Publication of JPS56149133A publication Critical patent/JPS56149133A/en
Publication of JPS6341456B2 publication Critical patent/JPS6341456B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To improve the transmission efficiency of data by substituting data in a time zone assigned to the transmission of a light communication device among signals received by the light communication device by the data transmitted from the communication device and then by transmitting it. CONSTITUTION:Optical signal 101 transmitted from optical transmission line 21 is supplied to optical branching circuit 3, where part of electric power is branched and supplied to optical receiving circuit 41. This signal 102 is converted by circuit 41 into an electric signal, which is further regenerated to obtain received signal 104. This signal is used as a received signal and signal selecting circuit 42 removes from it a signal part in a time zone assigned to transmission from light communication device 4 and adds transmitted signal 105 from device 4 as a substitute, thereby resending it from circuit 43. This light communication signal 106 is mixed with optical signal 103 which is not separated by circuit 3 by optical synthesizing circuit 5 to send the mixture to the side of optical transmission line 23. Consequently, many light communication devices are connected and the transmission efficiency of data is improved.
JP5248180A 1980-04-21 1980-04-21 Optical data link Granted JPS56149133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5248180A JPS56149133A (en) 1980-04-21 1980-04-21 Optical data link

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5248180A JPS56149133A (en) 1980-04-21 1980-04-21 Optical data link

Publications (2)

Publication Number Publication Date
JPS56149133A true JPS56149133A (en) 1981-11-18
JPS6341456B2 JPS6341456B2 (en) 1988-08-17

Family

ID=12915905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5248180A Granted JPS56149133A (en) 1980-04-21 1980-04-21 Optical data link

Country Status (1)

Country Link
JP (1) JPS56149133A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02264907A (en) * 1989-04-06 1990-10-29 Nippon Telegr & Teleph Corp <Ntt> Cleaning implement for optical connector
WO2020194724A1 (en) * 2019-03-28 2020-10-01 堺ディスプレイプロダクト株式会社 Display device and mounting structure for display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5259502A (en) * 1975-11-11 1977-05-17 Nec Corp Data transmission system using light fiber cable data highway
JPS5595439A (en) * 1979-01-12 1980-07-19 Sumitomo Electric Ind Ltd Time-division photo signal transmission system
JPS55123248A (en) * 1979-03-15 1980-09-22 Nec Corp Light loop data transmission system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5259502A (en) * 1975-11-11 1977-05-17 Nec Corp Data transmission system using light fiber cable data highway
JPS5595439A (en) * 1979-01-12 1980-07-19 Sumitomo Electric Ind Ltd Time-division photo signal transmission system
JPS55123248A (en) * 1979-03-15 1980-09-22 Nec Corp Light loop data transmission system

Also Published As

Publication number Publication date
JPS6341456B2 (en) 1988-08-17

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