JPS5787645A - Priority control system - Google Patents

Priority control system

Info

Publication number
JPS5787645A
JPS5787645A JP55163579A JP16357980A JPS5787645A JP S5787645 A JPS5787645 A JP S5787645A JP 55163579 A JP55163579 A JP 55163579A JP 16357980 A JP16357980 A JP 16357980A JP S5787645 A JPS5787645 A JP S5787645A
Authority
JP
Japan
Prior art keywords
station
transmission
pattern
transmission line
priority
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
JP55163579A
Other languages
Japanese (ja)
Other versions
JPS6366462B2 (en
Inventor
Haruka Nakamura
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55163579A priority Critical patent/JPS5787645A/en
Publication of JPS5787645A publication Critical patent/JPS5787645A/en
Publication of JPS6366462B2 publication Critical patent/JPS6366462B2/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]
    • H04L12/40—Bus networks
    • H04L12/407—Bus networks with decentralised control
    • H04L12/413—Bus networks with decentralised control with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD]

Landscapes

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

Abstract

PURPOSE:To increase the transmission efficiency, by providing a special code pattern for transmission line competition at the head of a transmission packet and determining the occupancy of the transmission line in the order based on the code constitution of the special code pattern when the competition with other station is caused. CONSTITUTION:If packets collide between its own station and other station, a priotity pattern transmitted from its own station and a signal pattern of other station on a transmission line 7 inputted via a receiver 8 are compared bit by bit at a priority discrimination circuit 11, and if both of them are different, a signal which stops the transmission of the station immediately as the presence of high priority from its own station is transmitted to a transmission logical stage 5. A retry counting circuit 12 is counted up with a transmission stop signal. The number of counts is reflected on the priority pattern set at the start of transmission newly after the end of waiting and the probability of occupancy right of transmission line for the next time can be increased.
JP55163579A 1980-11-20 1980-11-20 Priority control system Granted JPS5787645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55163579A JPS5787645A (en) 1980-11-20 1980-11-20 Priority control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55163579A JPS5787645A (en) 1980-11-20 1980-11-20 Priority control system

Publications (2)

Publication Number Publication Date
JPS5787645A true JPS5787645A (en) 1982-06-01
JPS6366462B2 JPS6366462B2 (en) 1988-12-20

Family

ID=15776584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55163579A Granted JPS5787645A (en) 1980-11-20 1980-11-20 Priority control system

Country Status (1)

Country Link
JP (1) JPS5787645A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997253A (en) * 1982-11-03 1984-06-05 ザ・ベンデイツクス・コ−ポレ−シヨン Data transmission method and device
JPS6053355A (en) * 1983-09-02 1985-03-27 Nec Corp Access system of bus type network

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52142902A (en) * 1976-05-24 1977-11-29 Mitsubishi Electric Corp Information transmission device
JPS5415193A (en) * 1977-07-06 1979-02-03 Hitachi Ltd Molding of pulp molding
JPS5559536A (en) * 1978-10-30 1980-05-06 Hitachi Ltd Bus priority control system in loop bus network system
JPS6366462A (en) * 1986-06-20 1988-03-25 ベ−リンガ−・マンハイム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Porous carrier material having immunity reactivity for different immunity analysis and manufacture thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52142902A (en) * 1976-05-24 1977-11-29 Mitsubishi Electric Corp Information transmission device
JPS5415193A (en) * 1977-07-06 1979-02-03 Hitachi Ltd Molding of pulp molding
JPS5559536A (en) * 1978-10-30 1980-05-06 Hitachi Ltd Bus priority control system in loop bus network system
JPS6366462A (en) * 1986-06-20 1988-03-25 ベ−リンガ−・マンハイム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Porous carrier material having immunity reactivity for different immunity analysis and manufacture thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997253A (en) * 1982-11-03 1984-06-05 ザ・ベンデイツクス・コ−ポレ−シヨン Data transmission method and device
JPS6053355A (en) * 1983-09-02 1985-03-27 Nec Corp Access system of bus type network

Also Published As

Publication number Publication date
JPS6366462B2 (en) 1988-12-20

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