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JPS56120233A - Station device for optical data - Google Patents

Station device for optical data

Info

Publication number
JPS56120233A
JPS56120233A JP2355380A JP2355380A JPS56120233A JP S56120233 A JPS56120233 A JP S56120233A JP 2355380 A JP2355380 A JP 2355380A JP 2355380 A JP2355380 A JP 2355380A JP S56120233 A JPS56120233 A JP S56120233A
Authority
JP
Japan
Prior art keywords
optical
relay device
photobrancher
input signal
reproduction
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
JP2355380A
Other languages
Japanese (ja)
Inventor
Takuya Iwagami
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 JP2355380A priority Critical patent/JPS56120233A/en
Publication of JPS56120233A publication Critical patent/JPS56120233A/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
    • H04B10/29—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 prevent the missing of data at switching, by inptting optical input signal to reproduction relay device through branching, and also inputting the output of the reproduction selay device and a part of the optical input signal to a photobrancher and optical switch. CONSTITUTION:An optical input signal 601 is inputted to a reproduction relay device 602 via a photobrancher 600. Optical signals 605, 606 are inputted to an optical signal switching circuit 604. Optical signals 609, 612 of the photobrancher 607 are applied to a photocoupler 617 via optical switches 611, 614 and the relay device 602 is bypassed. In case that the relay device 602 is passed, the optical switch 611 is switched after the optical switch 614 is switched. Thus, missing of transmitted data during switching can be avoided.
JP2355380A 1980-02-27 1980-02-27 Station device for optical data Pending JPS56120233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2355380A JPS56120233A (en) 1980-02-27 1980-02-27 Station device for optical data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2355380A JPS56120233A (en) 1980-02-27 1980-02-27 Station device for optical data

Publications (1)

Publication Number Publication Date
JPS56120233A true JPS56120233A (en) 1981-09-21

Family

ID=12113677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2355380A Pending JPS56120233A (en) 1980-02-27 1980-02-27 Station device for optical data

Country Status (1)

Country Link
JP (1) JPS56120233A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890841A (en) * 1981-11-25 1983-05-30 Mitsubishi Electric Corp Optical fiber communication system
JPS58202634A (en) * 1982-05-21 1983-11-25 Toshiba Corp Optical data way system
JPS58192601U (en) * 1982-06-17 1983-12-21 日本電気株式会社 optical communication line

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890841A (en) * 1981-11-25 1983-05-30 Mitsubishi Electric Corp Optical fiber communication system
JPS6251532B2 (en) * 1981-11-25 1987-10-30 Mitsubishi Electric Corp
JPS58202634A (en) * 1982-05-21 1983-11-25 Toshiba Corp Optical data way system
JPH043140B2 (en) * 1982-05-21 1992-01-22
JPS58192601U (en) * 1982-06-17 1983-12-21 日本電気株式会社 optical communication line

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