JPS5781746A - Control system of data transmission in loop transmission system - Google Patents

Control system of data transmission in loop transmission system

Info

Publication number
JPS5781746A
JPS5781746A JP15872680A JP15872680A JPS5781746A JP S5781746 A JPS5781746 A JP S5781746A JP 15872680 A JP15872680 A JP 15872680A JP 15872680 A JP15872680 A JP 15872680A JP S5781746 A JPS5781746 A JP S5781746A
Authority
JP
Japan
Prior art keywords
frame information
transmission line
information
signal
transmitted
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
JP15872680A
Other languages
Japanese (ja)
Other versions
JPS6342990B2 (en
Inventor
Masahiro Tada
Hiroshi Yamaguchi
Yukio Kimura
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
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15872680A priority Critical patent/JPS5781746A/en
Publication of JPS5781746A publication Critical patent/JPS5781746A/en
Publication of JPS6342990B2 publication Critical patent/JPS6342990B2/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 eliminate a master controller, by repealing a frame information toward the downstream of a loop transmission line and transmitting the new information, when the transmitted frame information including the own address information is received by the own device during the transmission of the frame information. CONSTITUTION:A data transmitter 2 connected to a loop transmission line 1 (1-IN and 1-OUT) carries out a relaying action when it acquires no right for transmission. Thus the signal is supplied from the transmission line 1-IN, and the signal is applied to the transmission line 1-OUT respectively. When the transmitter 2 transmits the frame information, the frame information includes the address information supplied to the own device to be transmitted to an address information field. Then the signal supplied from the line 1-IN is demodulated by a demodulating circuit 20, and the data and the clock are delivered to signal lines 101 and 102 respectively. The contents held at a holding register 25 is compared with the own address through a comparator 26. If a coincidence is obtained through this comparison, the frame information is repealed to the downstream direction of the loop transmission line. Then the new frame information is transmitted.
JP15872680A 1980-11-11 1980-11-11 Control system of data transmission in loop transmission system Granted JPS5781746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15872680A JPS5781746A (en) 1980-11-11 1980-11-11 Control system of data transmission in loop transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15872680A JPS5781746A (en) 1980-11-11 1980-11-11 Control system of data transmission in loop transmission system

Publications (2)

Publication Number Publication Date
JPS5781746A true JPS5781746A (en) 1982-05-21
JPS6342990B2 JPS6342990B2 (en) 1988-08-26

Family

ID=15677988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15872680A Granted JPS5781746A (en) 1980-11-11 1980-11-11 Control system of data transmission in loop transmission system

Country Status (1)

Country Link
JP (1) JPS5781746A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957543A (en) * 1982-08-26 1984-04-03 Fujitsu Ltd Data transmitting system
DE3729732A1 (en) * 1986-09-05 1988-03-17 Hitachi Ltd Data transmission method and device
US4813039A (en) * 1986-11-07 1989-03-14 Hitachi, Ltd. Loop transmission system and data transmission control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957543A (en) * 1982-08-26 1984-04-03 Fujitsu Ltd Data transmitting system
DE3729732A1 (en) * 1986-09-05 1988-03-17 Hitachi Ltd Data transmission method and device
US4813039A (en) * 1986-11-07 1989-03-14 Hitachi, Ltd. Loop transmission system and data transmission control method

Also Published As

Publication number Publication date
JPS6342990B2 (en) 1988-08-26

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