JPS57168553A - Multiplexing control system - Google Patents

Multiplexing control system

Info

Publication number
JPS57168553A
JPS57168553A JP56053593A JP5359381A JPS57168553A JP S57168553 A JPS57168553 A JP S57168553A JP 56053593 A JP56053593 A JP 56053593A JP 5359381 A JP5359381 A JP 5359381A JP S57168553 A JPS57168553 A JP S57168553A
Authority
JP
Japan
Prior art keywords
transmitting
contents
priority
transmission line
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
JP56053593A
Other languages
Japanese (ja)
Inventor
Tamotsu Nakazawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56053593A priority Critical patent/JPS57168553A/en
Publication of JPS57168553A publication Critical patent/JPS57168553A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
    • G06F13/368—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control
    • G06F13/372—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control using a time-dependent priority, e.g. individually loaded time counters or time slot

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Communication Control (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To realize an effective application of a transmission line, by transmitting the contents of a memory for acquisition of the using right of the transmission line to be received at each station for comparison of the priority and then transmitting the contents of the memory to the transmission line when the coincidence is obtained through the comparison of the priority to decide the transmitting priority of the transmission line. CONSTITUTION:A certain branch-connected station transmits the contents of a memory 13 to a transmission line from a transmitting part 10 in order to examine the use of the line 1. A signal receiver 2 of each station discriminates a go-ahead code on the line 1 and delivers it, and a counter 4 counts the clocks given from a signal receiver. The count contents are compared 5 with the contents of a priority part 6. If the coincidence is obtained, the signal showing a transmitting request is delivered from a signal transmitter 10 via an AND circuit 8. This data retains the transmitting requests of other stations having lower priorities. Thus if it is decided that the station that delivered the go-ahead code, etc. has the highest priority among the stations desiring the transmission, the data in a transmitting buffer 11 is transmitted.
JP56053593A 1981-04-09 1981-04-09 Multiplexing control system Pending JPS57168553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56053593A JPS57168553A (en) 1981-04-09 1981-04-09 Multiplexing control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56053593A JPS57168553A (en) 1981-04-09 1981-04-09 Multiplexing control system

Publications (1)

Publication Number Publication Date
JPS57168553A true JPS57168553A (en) 1982-10-16

Family

ID=12947169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56053593A Pending JPS57168553A (en) 1981-04-09 1981-04-09 Multiplexing control system

Country Status (1)

Country Link
JP (1) JPS57168553A (en)

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