JPS56161739A - Loop type data transmission system - Google Patents

Loop type data transmission system

Info

Publication number
JPS56161739A
JPS56161739A JP6445580A JP6445580A JPS56161739A JP S56161739 A JPS56161739 A JP S56161739A JP 6445580 A JP6445580 A JP 6445580A JP 6445580 A JP6445580 A JP 6445580A JP S56161739 A JPS56161739 A JP S56161739A
Authority
JP
Japan
Prior art keywords
station
transmission
statement
command
code
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
JP6445580A
Other languages
Japanese (ja)
Other versions
JPS625497B2 (en
Inventor
Yoshinobu Murai
Tsuneo Shidara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6445580A priority Critical patent/JPS56161739A/en
Publication of JPS56161739A publication Critical patent/JPS56161739A/en
Publication of JPS625497B2 publication Critical patent/JPS625497B2/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]
    • H04L12/42—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)

Abstract

PURPOSE:To obtain the loop-shape transmission system increasing the transfer speed, by moving the right of transmission to other station according to needs. CONSTITUTION:If a transmission permissible command is not received within a given time after the application of power supply, each station transmits a transmitting station statement command in which the presence of the right of transmission in the station itself makes statement to other stations. This transmission station statement command I consists of the command section and the index section indicating the station code, and if two or more stations transmit the transmision station statement command at the same time, the station having greatest value of the station code obtains the right of transmission by priority. The station a at t1 corresponds to it, the transmission statement commands IA, IZ are transmitted at the same time from the station A and the 2 station at t0, and since the A station code is greater than the station Z code, the IZ is blocked for the passing at the station A, and only the IA returns to the station A after circulating the loop. The station A transmits the IA repetitively by several times and the right of transmission is obtained after the IA returns surely.
JP6445580A 1980-05-15 1980-05-15 Loop type data transmission system Granted JPS56161739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6445580A JPS56161739A (en) 1980-05-15 1980-05-15 Loop type data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6445580A JPS56161739A (en) 1980-05-15 1980-05-15 Loop type data transmission system

Publications (2)

Publication Number Publication Date
JPS56161739A true JPS56161739A (en) 1981-12-12
JPS625497B2 JPS625497B2 (en) 1987-02-05

Family

ID=13258728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6445580A Granted JPS56161739A (en) 1980-05-15 1980-05-15 Loop type data transmission system

Country Status (1)

Country Link
JP (1) JPS56161739A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991757A (en) * 1982-11-18 1984-05-26 Toshiba Corp Loop transmitter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991757A (en) * 1982-11-18 1984-05-26 Toshiba Corp Loop transmitter
JPH0572143B2 (en) * 1982-11-18 1993-10-08 Tokyo Shibaura Electric Co

Also Published As

Publication number Publication date
JPS625497B2 (en) 1987-02-05

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