JPS55110449A - Data transmission unit - Google Patents

Data transmission unit

Info

Publication number
JPS55110449A
JPS55110449A JP1750579A JP1750579A JPS55110449A JP S55110449 A JPS55110449 A JP S55110449A JP 1750579 A JP1750579 A JP 1750579A JP 1750579 A JP1750579 A JP 1750579A JP S55110449 A JPS55110449 A JP S55110449A
Authority
JP
Japan
Prior art keywords
transmission line
amplifying circuits
data transmission
transmission unit
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.)
Pending
Application number
JP1750579A
Other languages
Japanese (ja)
Inventor
Akira Watanabe
Masayuki Eguchi
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 JP1750579A priority Critical patent/JPS55110449A/en
Publication of JPS55110449A publication Critical patent/JPS55110449A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To make easy the reconstitution of the system at disconnecting of transmission line, by connecting the transmission line of multidrop type with one or a plurality of bidirectional amplifying circuits in loop, and giving bypass function to this amplifier. CONSTITUTION:A plurality of station units A-H are connected in tree shape to the transmission line 1, and the transmission and reception of data and/or reference signal is mutually made via the transmission line 1 with the control of the controlling station unit E. The bidirectional amplifying circuits 2-1, 2-2 and 2-3 are connected between the beginning and termination end of the transmission line 1 so that the signal with any direction on the transmission line 1 is amplified and shaped for the amplifying circuits 2-1, 2-2, and 2-3 and also it is cut for the amplifying circuits 2-1, 2-2, 2-3, when the transmission line 1 is normal, the transmission line 1 is cut off in the amplifying circuits 2-1, 2-2, 2-3, and if the transmission line 1 is disconnected, any signal transmitted to any direction on the transmission line 1 to control the unit E.
JP1750579A 1979-02-16 1979-02-16 Data transmission unit Pending JPS55110449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1750579A JPS55110449A (en) 1979-02-16 1979-02-16 Data transmission unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1750579A JPS55110449A (en) 1979-02-16 1979-02-16 Data transmission unit

Publications (1)

Publication Number Publication Date
JPS55110449A true JPS55110449A (en) 1980-08-25

Family

ID=11945828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1750579A Pending JPS55110449A (en) 1979-02-16 1979-02-16 Data transmission unit

Country Status (1)

Country Link
JP (1) JPS55110449A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58127745U (en) * 1982-02-24 1983-08-30 株式会社東芝 Parallel data transmission equipment
JPS6150360U (en) * 1984-09-06 1986-04-04
JPS6271977U (en) * 1985-10-24 1987-05-08

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58127745U (en) * 1982-02-24 1983-08-30 株式会社東芝 Parallel data transmission equipment
JPS6150360U (en) * 1984-09-06 1986-04-04
JPS6271977U (en) * 1985-10-24 1987-05-08

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