JPS57201353A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS57201353A
JPS57201353A JP8546481A JP8546481A JPS57201353A JP S57201353 A JPS57201353 A JP S57201353A JP 8546481 A JP8546481 A JP 8546481A JP 8546481 A JP8546481 A JP 8546481A JP S57201353 A JPS57201353 A JP S57201353A
Authority
JP
Japan
Prior art keywords
information
sending
rqt
stm
sadm
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
JP8546481A
Other languages
Japanese (ja)
Inventor
Takashi Kosaka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8546481A priority Critical patent/JPS57201353A/en
Publication of JPS57201353A publication Critical patent/JPS57201353A/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

Landscapes

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

Abstract

PURPOSE:To enable preferential transmission of data of a station high in urgency regardless of physical constitution of the system by making priority control of obtaining the right of sending according to a priority level that can be set optionally. CONSTITUTION:It is supposed that request for sending occurred in stations STl, STm simultaneously, and the content of counter 19 of STl is 1 and that of STm is 2. RQT (1) information and RQT (SADl) information from STl are inputted to STm and comparison of priority level is made by a comparator 21. In this case, since content of the counter 19 is higher in STm, output of the comparator 21 becomes logic 1, and request for sending information, that is, RQT (2) information and RQT (SADm) information is sent out to the outgoing transmission line LN (T). This information has the right for sending, and inputted to a station STk which is not making transmission at present. STk sends out POL (SADm) information which is POL information with added ST address SADm and transfers the right of sending.
JP8546481A 1981-06-03 1981-06-03 Data transmission system Pending JPS57201353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8546481A JPS57201353A (en) 1981-06-03 1981-06-03 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8546481A JPS57201353A (en) 1981-06-03 1981-06-03 Data transmission system

Publications (1)

Publication Number Publication Date
JPS57201353A true JPS57201353A (en) 1982-12-09

Family

ID=13859604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8546481A Pending JPS57201353A (en) 1981-06-03 1981-06-03 Data transmission system

Country Status (1)

Country Link
JP (1) JPS57201353A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170353A (en) * 1984-02-15 1985-09-03 Yamatake Honeywell Co Ltd Data transmitting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170353A (en) * 1984-02-15 1985-09-03 Yamatake Honeywell Co Ltd Data transmitting system

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