JPS5474602A - Photo delivery unit of synchronous type - Google Patents

Photo delivery unit of synchronous type

Info

Publication number
JPS5474602A
JPS5474602A JP14161277A JP14161277A JPS5474602A JP S5474602 A JPS5474602 A JP S5474602A JP 14161277 A JP14161277 A JP 14161277A JP 14161277 A JP14161277 A JP 14161277A JP S5474602 A JPS5474602 A JP S5474602A
Authority
JP
Japan
Prior art keywords
fiber
optical
inserter
unit
synchronous signal
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
JP14161277A
Other languages
Japanese (ja)
Inventor
Hiroyuki Kudo
Kazuhiro Sano
Yoshiteru Miki
Tomio Chiba
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14161277A priority Critical patent/JPS5474602A/en
Publication of JPS5474602A publication Critical patent/JPS5474602A/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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2589—Bidirectional transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To reduce the number of optical fibers and to reduce the cost without lowering the reliability, by delivering the synchronous signal at vacant time of data through the use of optical fiber of one core and of the optical branch inserter. CONSTITUTION:The synchronous signal is converted into optical signal with the transmitter 1, is fed to the optical branch inserter 8 via the fiber 21, and the output is propagated to the fiber 9. The synchronous signal restored with the receiver 3 via the optical branch inserter 10 and the fiber 61 is fed to the data input unit 4, synchronizing the sampling clock of the oscillator output incorporated in the unit 4. Further, the output data of the unit 4 is delivered to the central unit via the transmitter 5, fiber 9 and the receiver 7.
JP14161277A 1977-11-28 1977-11-28 Photo delivery unit of synchronous type Pending JPS5474602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14161277A JPS5474602A (en) 1977-11-28 1977-11-28 Photo delivery unit of synchronous type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14161277A JPS5474602A (en) 1977-11-28 1977-11-28 Photo delivery unit of synchronous type

Publications (1)

Publication Number Publication Date
JPS5474602A true JPS5474602A (en) 1979-06-14

Family

ID=15296066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14161277A Pending JPS5474602A (en) 1977-11-28 1977-11-28 Photo delivery unit of synchronous type

Country Status (1)

Country Link
JP (1) JPS5474602A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502146A (en) * 1973-05-16 1975-01-10
JPS5172201A (en) * 1974-10-16 1976-06-22 Northern Electric Co 2 senshikizennijudeetadensohoho oyobi sochi
JPS51113505A (en) * 1975-03-31 1976-10-06 Nippon Serufuotsuku Kk Multiplex optical fiber communication equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502146A (en) * 1973-05-16 1975-01-10
JPS5172201A (en) * 1974-10-16 1976-06-22 Northern Electric Co 2 senshikizennijudeetadensohoho oyobi sochi
JPS51113505A (en) * 1975-03-31 1976-10-06 Nippon Serufuotsuku Kk Multiplex optical fiber communication equipment

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