JPS5579544A - Bus unit - Google Patents

Bus unit

Info

Publication number
JPS5579544A
JPS5579544A JP15384778A JP15384778A JPS5579544A JP S5579544 A JPS5579544 A JP S5579544A JP 15384778 A JP15384778 A JP 15384778A JP 15384778 A JP15384778 A JP 15384778A JP S5579544 A JPS5579544 A JP S5579544A
Authority
JP
Japan
Prior art keywords
photo
send
receivers
modules
light
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
JP15384778A
Other languages
Japanese (ja)
Inventor
Shigeo Nakatsuka
Mitsuhiro Ishizaka
Takane Kakuno
Tachiki Ichihashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP15384778A priority Critical patent/JPS5579544A/en
Publication of JPS5579544A publication Critical patent/JPS5579544A/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
    • H04B10/27—Arrangements for networking

Landscapes

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

Abstract

PURPOSE:To prevent a trouble due to an earth potential difference while reducing an influence of electrical noises by smoothly handling the racing among data as to a right to send by a photo switching board when coupling control modules making use of optical fiber transmission. CONSTITUTION:The output data signal of star-shaped light branch circuit 2 branching input light to several and outputting them is led to computer modules 1A-1C via photo transmitter-receivers 3A-3C, and respective outputs of those modules 1A-1C are inputted to control circuits 4A-4C. To those circuits 4A-4C, photo transmitters 6A-6C which output requests to send to photo receivers 10A- 10C connected to photo switching board 7 are connected, and photo receivers 5A- 5C which detect transmission enable signals are further connected. Then, requests to send are applied to electrodes 8A-8C provided to board 7, and the light of light emitting unit 11 is curved in directions of curves 9A-9C to supply permissions to send to photo receivers 5A-5C, thereby exercising smooth control over the racing among modules 1A-1C.
JP15384778A 1978-12-13 1978-12-13 Bus unit Pending JPS5579544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15384778A JPS5579544A (en) 1978-12-13 1978-12-13 Bus unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15384778A JPS5579544A (en) 1978-12-13 1978-12-13 Bus unit

Publications (1)

Publication Number Publication Date
JPS5579544A true JPS5579544A (en) 1980-06-16

Family

ID=15571392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15384778A Pending JPS5579544A (en) 1978-12-13 1978-12-13 Bus unit

Country Status (1)

Country Link
JP (1) JPS5579544A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754475A (en) * 1981-10-02 1988-06-28 Sonintel Sociedade Nacional De Industria De Telecomunicacoes Ltda. Calling line tracing system and identification detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754475A (en) * 1981-10-02 1988-06-28 Sonintel Sociedade Nacional De Industria De Telecomunicacoes Ltda. Calling line tracing system and identification detector

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