JPS57171864A - Data communication system - Google Patents

Data communication system

Info

Publication number
JPS57171864A
JPS57171864A JP56057310A JP5731081A JPS57171864A JP S57171864 A JPS57171864 A JP S57171864A JP 56057310 A JP56057310 A JP 56057310A JP 5731081 A JP5731081 A JP 5731081A JP S57171864 A JPS57171864 A JP S57171864A
Authority
JP
Japan
Prior art keywords
driver
signal
receiver
communication devices
transmission line
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
JP56057310A
Other languages
Japanese (ja)
Inventor
Shigeo Nanbu
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56057310A priority Critical patent/JPS57171864A/en
Publication of JPS57171864A publication Critical patent/JPS57171864A/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]
    • H04L12/40—Bus networks

Landscapes

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

Abstract

PURPOSE:To increase the number of communication devices which can be connected in multi-drop connection without lowering the capacity of the driver of the communication devices, by connecting plural transmission lines each other with a repeater without any malfunction. CONSTITUTION:Plural communication devices 1A-1N and 2A-2M are connected respectively to transmission lines 3 and 4 in parallel, and a repeater device 8 connects the transmission lines 3 and 4. A signal from the transmission line 3 is received by the 1st receiver 23 of the device 8, and the signal is transmitted to the transmission line 4 through the 1st driver 24 after the signal is shaped in waveform and amplified. In the same way, a signal from the transmission line 4 is received by the 2nd receiver and transmitted to the transmission line 3 through the 2nd driver 26. When each of receives 23 and 25 obtains outputs, an operation stop signal is supplied to the receiver 25 and the driver 26 or the receiver 23 and the driver 24 from the 1st and 2nd reception switching circuits 21 and 22, and thus, the number of communication devices which can be connected, is increased without lowering the capacity of the drivers 24 and 26.
JP56057310A 1981-04-16 1981-04-16 Data communication system Pending JPS57171864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56057310A JPS57171864A (en) 1981-04-16 1981-04-16 Data communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56057310A JPS57171864A (en) 1981-04-16 1981-04-16 Data communication system

Publications (1)

Publication Number Publication Date
JPS57171864A true JPS57171864A (en) 1982-10-22

Family

ID=13051983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56057310A Pending JPS57171864A (en) 1981-04-16 1981-04-16 Data communication system

Country Status (1)

Country Link
JP (1) JPS57171864A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6074839A (en) * 1983-09-30 1985-04-27 Toshiba Corp Repeater device
EP0199338A2 (en) * 1985-04-26 1986-10-29 Honeywell Inc. Repeater circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178617A (en) * 1974-12-29 1976-07-08 Panafacom Ltd
JPS556621A (en) * 1978-06-30 1980-01-18 Iwatsu Electric Co Ltd Bus switching control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178617A (en) * 1974-12-29 1976-07-08 Panafacom Ltd
JPS556621A (en) * 1978-06-30 1980-01-18 Iwatsu Electric Co Ltd Bus switching control system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6074839A (en) * 1983-09-30 1985-04-27 Toshiba Corp Repeater device
JPH0228939B2 (en) * 1983-09-30 1990-06-27 Tokyo Shibaura Electric Co
EP0199338A2 (en) * 1985-04-26 1986-10-29 Honeywell Inc. Repeater circuit
EP0199338A3 (en) * 1985-04-26 1988-09-14 Honeywell Inc. Repeater circuit

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