JPS5648000A - Information processor - Google Patents
Information processorInfo
- Publication number
- JPS5648000A JPS5648000A JP12260279A JP12260279A JPS5648000A JP S5648000 A JPS5648000 A JP S5648000A JP 12260279 A JP12260279 A JP 12260279A JP 12260279 A JP12260279 A JP 12260279A JP S5648000 A JPS5648000 A JP S5648000A
- Authority
- JP
- Japan
- Prior art keywords
- parity
- data
- circuit
- error
- information
- 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)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
PURPOSE: To perform memory read operation accurately while preventing an apparent fault of a machine by preventing an error that occurs once, by making a parity check by rereading data where a parity error has occurred.
CONSTITUTION: Information data, when read out of memory device 1 by control circuit 6 via address selecting circuit 2, is temporarily stored in data register 3 and parity generating circuit 4 generates its parity on the basis of the count value of bits of the readout data. This parity is compared to that added to information of device 1 by comparing circuit 5 and when the information data is wrong, comparator 5 generates a high-level output to erase the contents of register 3 while device 6 holds circuit 2. Consequently, the information, when the parity error occurs, is reread and checked again to prevent the occurrence of a one-chance error, so that the read operation of the memory can be performed accurately.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12260279A JPS5648000A (en) | 1979-09-26 | 1979-09-26 | Information processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12260279A JPS5648000A (en) | 1979-09-26 | 1979-09-26 | Information processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5648000A true JPS5648000A (en) | 1981-04-30 |
Family
ID=14839988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12260279A Pending JPS5648000A (en) | 1979-09-26 | 1979-09-26 | Information processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5648000A (en) |
-
1979
- 1979-09-26 JP JP12260279A patent/JPS5648000A/en active Pending
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