JPS55115148A - Error detection and correction system - Google Patents
Error detection and correction systemInfo
- Publication number
- JPS55115148A JPS55115148A JP2173679A JP2173679A JPS55115148A JP S55115148 A JPS55115148 A JP S55115148A JP 2173679 A JP2173679 A JP 2173679A JP 2173679 A JP2173679 A JP 2173679A JP S55115148 A JPS55115148 A JP S55115148A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- error
- data
- register
- detection
- 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
Abstract
PURPOSE: To increase the reliability of data, by detecting the state of error correctly to point out the error occurrence bit if a plurality of bit errors two or more bits.
CONSTITUTION: The output of the register 6 holding the readout data bit and redundan bit from the memory unit 4 is fed to the single bit error correction -double bit error detection SEC-DED circuit 8. Further, in case of detection and correction as n-bit error and in case of detection as n+1-bit error, the result is fed to the polarity inverter 13 via the logical sum gate 24 and the register 22, and the data bit and the redundant bit are all polarity inverted and written in the unit 4 again. The data and redundant bit written in are read out on the register 6, they are compared with the data bit and redundant bit before polarity inversion at the error bit indicating circuit 25, to point out up the error occurrence of n-bit and n+1-bit or more.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2173679A JPS55115148A (en) | 1979-02-26 | 1979-02-26 | Error detection and correction system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2173679A JPS55115148A (en) | 1979-02-26 | 1979-02-26 | Error detection and correction system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55115148A true JPS55115148A (en) | 1980-09-04 |
Family
ID=12063355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2173679A Pending JPS55115148A (en) | 1979-02-26 | 1979-02-26 | Error detection and correction system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55115148A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01304543A (en) * | 1988-04-29 | 1989-12-08 | Internatl Business Mach Corp <Ibm> | Error corrector |
-
1979
- 1979-02-26 JP JP2173679A patent/JPS55115148A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01304543A (en) * | 1988-04-29 | 1989-12-08 | Internatl Business Mach Corp <Ibm> | Error corrector |
JPH0529935B2 (en) * | 1988-04-29 | 1993-05-06 | Intaanashonaru Bijinesu Mashiinzu Corp |
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