JPS57150254A - Branching device - Google Patents

Branching device

Info

Publication number
JPS57150254A
JPS57150254A JP56035695A JP3569581A JPS57150254A JP S57150254 A JPS57150254 A JP S57150254A JP 56035695 A JP56035695 A JP 56035695A JP 3569581 A JP3569581 A JP 3569581A JP S57150254 A JPS57150254 A JP S57150254A
Authority
JP
Japan
Prior art keywords
circuit
signal
capacitor
resistance
potential
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
JP56035695A
Other languages
Japanese (ja)
Other versions
JPS6355256B2 (en
Inventor
Tetsuo Urushima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56035695A priority Critical patent/JPS57150254A/en
Publication of JPS57150254A publication Critical patent/JPS57150254A/en
Publication of JPS6355256B2 publication Critical patent/JPS6355256B2/ja
Granted 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]
    • H04L12/40—Bus networks

Landscapes

  • Small-Scale Networks (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To operate the other terminal of a branch signal line without being influenced by short circuit, by disconnecting a controlling circuit in a branching device, in case short circuit has occurred in one terminal side of the branch signal line. CONSTITUTION:A main device 1 is connected to a branching device 2 by signal lines (a), (b), and the device 2 is connected to terminal circuits 3-6, 7-10 by signal lines (c), (d) and (e), (f), respectively. For instance, when a signal (d) and a grounding circuit GND2 are short-circuited, charged voltage of a capacitor C1 is discharged by a resistance R6, the capacitor C1 , the line (d), and a closed circuit of the circuit GND2. Accordingly, the potential of a point G of a transistor TR4 becomes zero potential from negative by time constants of the resistance R6 and the capacitor C1 after the short circuit. Also, as for the positive potential of an electric power supply PS, the voltage drops by a resistance R7, a current is made to flow in the DS direction of the TR4, and a pole D is set to zero potential. As a result, the collector and the emitter of a TR3 are disconnected, therefore, the signal (f) is transmitted to the main device 1 through the signal line (b).
JP56035695A 1981-03-11 1981-03-11 Branching device Granted JPS57150254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56035695A JPS57150254A (en) 1981-03-11 1981-03-11 Branching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56035695A JPS57150254A (en) 1981-03-11 1981-03-11 Branching device

Publications (2)

Publication Number Publication Date
JPS57150254A true JPS57150254A (en) 1982-09-17
JPS6355256B2 JPS6355256B2 (en) 1988-11-01

Family

ID=12449024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56035695A Granted JPS57150254A (en) 1981-03-11 1981-03-11 Branching device

Country Status (1)

Country Link
JP (1) JPS57150254A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045505A (en) * 1973-08-27 1975-04-23
JPS513140A (en) * 1974-06-26 1976-01-12 Hitachi Ltd

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045505A (en) * 1973-08-27 1975-04-23
JPS513140A (en) * 1974-06-26 1976-01-12 Hitachi Ltd

Also Published As

Publication number Publication date
JPS6355256B2 (en) 1988-11-01

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