JPS57133739A - Acquiring system of data transmission right in data transmitter - Google Patents

Acquiring system of data transmission right in data transmitter

Info

Publication number
JPS57133739A
JPS57133739A JP56018952A JP1895281A JPS57133739A JP S57133739 A JPS57133739 A JP S57133739A JP 56018952 A JP56018952 A JP 56018952A JP 1895281 A JP1895281 A JP 1895281A JP S57133739 A JPS57133739 A JP S57133739A
Authority
JP
Japan
Prior art keywords
transmission right
frame
time
transmission
station
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
JP56018952A
Other languages
Japanese (ja)
Inventor
Tadashi Takano
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 JP56018952A priority Critical patent/JPS57133739A/en
Publication of JPS57133739A publication Critical patent/JPS57133739A/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
    • H04L12/427—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 reduce the repetitive operation required for the acquirement of transmission right, by setting the transmission right erasing time-out different from each data transmitter connected to a loop transmission line. CONSTITUTION:When data transmitters LIU1-4 receive an information frame from the corresponding device of the station itself, the transmission right frame addressed to unspecific station on transmission lines 11-14 is fetched, and the information frame is transmitted. When the transmission right frame addressed to an unspecific station is erased and time is out, the transmission right frame addressed to the station itself is transmitted to a transmission line and the frame returned through circulation is fetched, and when the frame is erased and the time is out, the frame is repetitively transmitted. When the time up to time-out is made different from each LIU, useless operation of acquirement of transmission right can be repeated through mutual competition of the LIUs.
JP56018952A 1981-02-13 1981-02-13 Acquiring system of data transmission right in data transmitter Pending JPS57133739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56018952A JPS57133739A (en) 1981-02-13 1981-02-13 Acquiring system of data transmission right in data transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56018952A JPS57133739A (en) 1981-02-13 1981-02-13 Acquiring system of data transmission right in data transmitter

Publications (1)

Publication Number Publication Date
JPS57133739A true JPS57133739A (en) 1982-08-18

Family

ID=11985974

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56018952A Pending JPS57133739A (en) 1981-02-13 1981-02-13 Acquiring system of data transmission right in data transmitter

Country Status (1)

Country Link
JP (1) JPS57133739A (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

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