JPS57201353A - Data transmission system - Google Patents
Data transmission systemInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60170353A (en) * | 1984-02-15 | 1985-09-03 | Yamatake Honeywell Co Ltd | Data transmitting system |
-
1981
- 1981-06-03 JP JP8546481A patent/JPS57201353A/en active Pending
Cited By (1)
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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