JPS5476002A - Transmission control system - Google Patents
Transmission control systemInfo
- Publication number
- JPS5476002A JPS5476002A JP14373277A JP14373277A JPS5476002A JP S5476002 A JPS5476002 A JP S5476002A JP 14373277 A JP14373277 A JP 14373277A JP 14373277 A JP14373277 A JP 14373277A JP S5476002 A JPS5476002 A JP S5476002A
- Authority
- JP
- Japan
- Prior art keywords
- data transfer
- polling
- transmission source
- terminals
- general
- 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
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
- G06F13/22—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling
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)
- Communication Control (AREA)
Abstract
PURPOSE:To reduce the overhead of the polling and thus to increase the process capacity of the system by sending the presence or absence of all terminal data transfer requests back to the general polling transmission source by one general polling and performing the data transfer continuously with the terminal which has the data transfer request. CONSTITUTION:Flag resister R1 to show the absence or presence of the data transfer request for each of terminals 21, 22 ... 25 is provided at controller 1 which controls terminals 21, 22 ... 2n. Thus, the contents of register R1 is sent back to the general polling given from polling transmission source 3 to be memorized in flag register R2 provided at the transmission source. In this way, the data transfer is carried out continuously and in sequence between all terminals 21, 22 ... 25 which have the data transfer request and polling transmission source 3 and without repeating the general polling.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14373277A JPS5476002A (en) | 1977-11-30 | 1977-11-30 | Transmission control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14373277A JPS5476002A (en) | 1977-11-30 | 1977-11-30 | Transmission control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5476002A true JPS5476002A (en) | 1979-06-18 |
Family
ID=15345713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14373277A Pending JPS5476002A (en) | 1977-11-30 | 1977-11-30 | Transmission control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5476002A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS562763A (en) * | 1979-06-20 | 1981-01-13 | Toshiba Corp | Data gathering system |
JPS5711557A (en) * | 1980-06-26 | 1982-01-21 | Fujitsu Ltd | Data transmission system |
JPS58129624A (en) * | 1982-01-29 | 1983-08-02 | Casio Comput Co Ltd | Data transferring system |
JPS5985157A (en) * | 1982-11-06 | 1984-05-17 | Fujitsu Ltd | Information processing system |
JPS61224751A (en) * | 1985-03-29 | 1986-10-06 | Usac Electronics Ind Co Ltd | Polling response control system |
-
1977
- 1977-11-30 JP JP14373277A patent/JPS5476002A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS562763A (en) * | 1979-06-20 | 1981-01-13 | Toshiba Corp | Data gathering system |
JPS6331982B2 (en) * | 1979-06-20 | 1988-06-28 | Tokyo Shibaura Electric Co | |
JPS5711557A (en) * | 1980-06-26 | 1982-01-21 | Fujitsu Ltd | Data transmission system |
JPS58129624A (en) * | 1982-01-29 | 1983-08-02 | Casio Comput Co Ltd | Data transferring system |
JPH0418339B2 (en) * | 1982-01-29 | 1992-03-27 | Casio Computer Co Ltd | |
JPS5985157A (en) * | 1982-11-06 | 1984-05-17 | Fujitsu Ltd | Information processing system |
JPH026266B2 (en) * | 1982-11-06 | 1990-02-08 | Fujitsu Ltd | |
JPS61224751A (en) * | 1985-03-29 | 1986-10-06 | Usac Electronics Ind Co Ltd | Polling response control system |
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