JPS5556264A - Error detection circuit - Google Patents
Error detection circuitInfo
- Publication number
- JPS5556264A JPS5556264A JP12879078A JP12879078A JPS5556264A JP S5556264 A JPS5556264 A JP S5556264A JP 12879078 A JP12879078 A JP 12879078A JP 12879078 A JP12879078 A JP 12879078A JP S5556264 A JPS5556264 A JP S5556264A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- selector circuit
- error
- parity
- 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
Landscapes
- Detection And Correction Of Errors (AREA)
Abstract
PURPOSE: To suppress an increase in hardware by detecting an error of a selective assignment signal of a selector circuit by regarding it as a parity error of output data of the selector circuit.
CONSTITUTION: A selective assignement signal is sent out through signal lines 51W 54 to indicate signal selection by logic "1". An exclusive-OR circuit makes a check on whether two selection indications exist at the same time to control selector circuit 1. Then, gate 6 generate the parity of a signal generated by coding the selective assignment signal by gates 4 and 5. by coded signals from signal lines 63 and 64 and a parity signal from signal line 65, exclusive-OR circuit 3 makes a parity check to output logic "0" where an error is found, thereby putting selector circuit 1 in an unselected state. At this time, since selector circuit 1 outputs data of all logic "0", it is found that selective assignment of circuit 1 is incorrect. An error report circuit of a register, etc., at the post stage of the selector circuit serves as that for the selective assignment signal, so that only small hardware will be required.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12879078A JPS5556264A (en) | 1978-10-19 | 1978-10-19 | Error detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12879078A JPS5556264A (en) | 1978-10-19 | 1978-10-19 | Error detection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5556264A true JPS5556264A (en) | 1980-04-24 |
Family
ID=14993510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12879078A Pending JPS5556264A (en) | 1978-10-19 | 1978-10-19 | Error detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5556264A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007099288A (en) * | 2005-09-30 | 2007-04-19 | Risu Pack Co Ltd | Container for packaging |
-
1978
- 1978-10-19 JP JP12879078A patent/JPS5556264A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007099288A (en) * | 2005-09-30 | 2007-04-19 | Risu Pack Co Ltd | Container for packaging |
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