JPS55153449A - Data communication system - Google Patents

Data communication system

Info

Publication number
JPS55153449A
JPS55153449A JP4746779A JP4746779A JPS55153449A JP S55153449 A JPS55153449 A JP S55153449A JP 4746779 A JP4746779 A JP 4746779A JP 4746779 A JP4746779 A JP 4746779A JP S55153449 A JPS55153449 A JP S55153449A
Authority
JP
Japan
Prior art keywords
packet
response
address
communication control
data transfer
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
JP4746779A
Other languages
Japanese (ja)
Other versions
JPS589619B2 (en
Inventor
Yoshihiro Kitano
Yoichi Suzuki
Teruyoshi Mita
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP54047467A priority Critical patent/JPS589619B2/en
Publication of JPS55153449A publication Critical patent/JPS55153449A/en
Publication of JPS589619B2 publication Critical patent/JPS589619B2/en
Expired 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
    • H04L12/427—Loop networks with decentralised control
    • H04L12/433—Loop networks with decentralised control with asynchronous transmission, e.g. token ring, register insertion

Landscapes

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

Abstract

PURPOSE:To release the data transfer packet after data transfer and to make effective use of other communication control unit, by providing the control packet for inquiry/response in one frame. CONSTITUTION:In one frame information taking ahead the synchronizing pattern SYNC3, the inquiry/response control packets 5-0-5-3 (consisting of each field of control information, addressed address, transmission original address and response) together with the data transfer packets 4-0-4-2 are provided. When the communication control unit 2-0 of the data highway linked in ring shape communicates with the communication control unit 2-2 by using the packet 4-1, each address and electric message of the units 2-0 and 2-2 are written in the packet 4-1, the unit 2-2 acknowledges the address itself and receives the message, and next, any one response field of the control packet is used to inform the reception state to the unit 2-0, and the packet 4-1 is released in this stage, allowing to use for other communication control units.
JP54047467A 1979-04-18 1979-04-18 data communication system Expired JPS589619B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54047467A JPS589619B2 (en) 1979-04-18 1979-04-18 data communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54047467A JPS589619B2 (en) 1979-04-18 1979-04-18 data communication system

Publications (2)

Publication Number Publication Date
JPS55153449A true JPS55153449A (en) 1980-11-29
JPS589619B2 JPS589619B2 (en) 1983-02-22

Family

ID=12775948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54047467A Expired JPS589619B2 (en) 1979-04-18 1979-04-18 data communication system

Country Status (1)

Country Link
JP (1) JPS589619B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0216838A (en) * 1988-04-21 1990-01-19 At & T And Philips Telecommun Bv Line and/or packet exchange communication exchange system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0216838A (en) * 1988-04-21 1990-01-19 At & T And Philips Telecommun Bv Line and/or packet exchange communication exchange system

Also Published As

Publication number Publication date
JPS589619B2 (en) 1983-02-22

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