JPS55935A - Signal synchronization system - Google Patents
Signal synchronization systemInfo
- Publication number
- JPS55935A JPS55935A JP7376978A JP7376978A JPS55935A JP S55935 A JPS55935 A JP S55935A JP 7376978 A JP7376978 A JP 7376978A JP 7376978 A JP7376978 A JP 7376978A JP S55935 A JPS55935 A JP S55935A
- Authority
- JP
- Japan
- Prior art keywords
- parity
- cpu12
- output
- input
- parity bit
- 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
Links
Landscapes
- Information Transfer Systems (AREA)
Abstract
PURPOSE: To read signals with high precision by reading unconditional request signals from remote input-output devices which operates asynchronously at the clock timing of a central processor in an electronic computer system.
CONSTITUTION: An unconditional request signal, set to output register 15 of input- output device 11 is given a parity bit by parity bit generator 16 and sent out via data common bus 13 to central processor (CPU)12, where when the result of the check by parity check circuit 17 is normal, it is fetched into control part 18. This read operation is performed at the clock timing of CPU12 and set signal S is sent from CPU12 to input-output device 11 via transmission line 19 to output the unconditonal request signal and also to give the parity bit; after the fixed time elapses, CPU12 makes a parity check, so that the control of parity will be excuted accurately.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7376978A JPS55935A (en) | 1978-06-20 | 1978-06-20 | Signal synchronization system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7376978A JPS55935A (en) | 1978-06-20 | 1978-06-20 | Signal synchronization system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55935A true JPS55935A (en) | 1980-01-07 |
JPS5747444B2 JPS5747444B2 (en) | 1982-10-09 |
Family
ID=13527741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7376978A Granted JPS55935A (en) | 1978-06-20 | 1978-06-20 | Signal synchronization system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55935A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4760171A (en) * | 1986-12-10 | 1988-07-26 | Agency Of Industrial Science And Technology | Process for producing ethanol |
-
1978
- 1978-06-20 JP JP7376978A patent/JPS55935A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4760171A (en) * | 1986-12-10 | 1988-07-26 | Agency Of Industrial Science And Technology | Process for producing ethanol |
Also Published As
Publication number | Publication date |
---|---|
JPS5747444B2 (en) | 1982-10-09 |
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