JPS5610757A - Circuit control system for data highway system - Google Patents

Circuit control system for data highway system

Info

Publication number
JPS5610757A
JPS5610757A JP8498879A JP8498879A JPS5610757A JP S5610757 A JPS5610757 A JP S5610757A JP 8498879 A JP8498879 A JP 8498879A JP 8498879 A JP8498879 A JP 8498879A JP S5610757 A JPS5610757 A JP S5610757A
Authority
JP
Japan
Prior art keywords
frame
data transmission
circuit
polling
stations
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
JP8498879A
Other languages
Japanese (ja)
Other versions
JPS5822893B2 (en
Inventor
Masahiro Takahashi
Takushi Hamada
Seiichi Yasumoto
Toshihiko Ogura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8498879A priority Critical patent/JPS5822893B2/en
Publication of JPS5610757A publication Critical patent/JPS5610757A/en
Publication of JPS5822893B2 publication Critical patent/JPS5822893B2/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
    • H04L12/423—Loop networks with centralised control, e.g. polling

Landscapes

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

Abstract

PURPOSE:To increase the using efficiency of the circuit and then increase the data transfer speed, by transmitting the polling frame from the station designated by the selection frame and then sending the effective frame for the data transmission. CONSTITUTION:Loop-shaped stations 2-6 with the circuits connected are provided in order to carry out the data transmission among computers 8 and 9 plus terminals units 10-12. These stations 2-6 incorporate the transmtting/receiving function to perform the data transmission plus the circuit function to give the permission to the data transmission among the specific stations by the polling system. Then the station designated by the selection frame sent from the station which performs the circuit control sets the frame bit number to the counter with the end of reception of the selection frame to start the polling frame generator. Thus the polling frame is transmitted, and then the frame effective for the data transmission is transmitted. In such way, the using efficiency of the circuit can be increased, and then the data transfer speed can be increased.
JP8498879A 1979-07-06 1979-07-06 Data highway system line control method Expired JPS5822893B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8498879A JPS5822893B2 (en) 1979-07-06 1979-07-06 Data highway system line control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8498879A JPS5822893B2 (en) 1979-07-06 1979-07-06 Data highway system line control method

Publications (2)

Publication Number Publication Date
JPS5610757A true JPS5610757A (en) 1981-02-03
JPS5822893B2 JPS5822893B2 (en) 1983-05-12

Family

ID=13845995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8498879A Expired JPS5822893B2 (en) 1979-07-06 1979-07-06 Data highway system line control method

Country Status (1)

Country Link
JP (1) JPS5822893B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113332A1 (en) * 1981-03-25 1982-10-21 Hitachi, Ltd., Tokyo Data transmission system and method for transmitting data

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6087689A (en) * 1983-10-18 1985-05-17 Mitsubishi Electric Corp Controlling method of synchronous motor
JPS6450786A (en) * 1987-08-21 1989-02-27 Yokogawa Electric Corp Brushless servo-motor driving device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113332A1 (en) * 1981-03-25 1982-10-21 Hitachi, Ltd., Tokyo Data transmission system and method for transmitting data

Also Published As

Publication number Publication date
JPS5822893B2 (en) 1983-05-12

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