JPS5766598A - Memory circuit having error correction function - Google Patents
Memory circuit having error correction functionInfo
- Publication number
- JPS5766598A JPS5766598A JP55141331A JP14133180A JPS5766598A JP S5766598 A JPS5766598 A JP S5766598A JP 55141331 A JP55141331 A JP 55141331A JP 14133180 A JP14133180 A JP 14133180A JP S5766598 A JPS5766598 A JP S5766598A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- generating circuit
- parity
- error
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Detection And Correction Of Errors (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
PURPOSE:To speed operation and to decrease the number of circuits by performing writing operation by supplying an error correction code generating circuit with parity generating circuit outputs equivalent to write data width for external write data. CONSTITUTION:In a data selecting circuit 2, a byte specified by a write address signal a'' among information bits (d) from a memory array 1 is substituted by external write data (n) to obtain a data output (i). A parity generating circuit 3 generates a write part parity signal (f) from the data (n) and outputs it to an error correction code generating circuit 5. In the circuit 5, a byte, specified by the signal a''. of a partial parity signal (e) inputted from a parity generating circuit 4 is substituted by the signal (f), thereby outputting a check bit (j) to an error correcting circuit 8. On receiving a signal (a), an address checking circuit 10 outputs an error position specification signal (k), obtained by correcting a decoded signal (h) so that even if a bit (d) has a one-bit error, the corrections of information bits and a corresponding check bit are inhibited, to error correcting circuits 7 and 8.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55141331A JPS5766598A (en) | 1980-10-09 | 1980-10-09 | Memory circuit having error correction function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55141331A JPS5766598A (en) | 1980-10-09 | 1980-10-09 | Memory circuit having error correction function |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5766598A true JPS5766598A (en) | 1982-04-22 |
JPS6223902B2 JPS6223902B2 (en) | 1987-05-26 |
Family
ID=15289455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55141331A Granted JPS5766598A (en) | 1980-10-09 | 1980-10-09 | Memory circuit having error correction function |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5766598A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0526171Y2 (en) * | 1987-12-22 | 1993-07-01 | ||
JPH01153007U (en) * | 1988-04-14 | 1989-10-23 | ||
JPH06235228A (en) * | 1993-02-09 | 1994-08-23 | Kajima Corp | Embedded vent cap |
-
1980
- 1980-10-09 JP JP55141331A patent/JPS5766598A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6223902B2 (en) | 1987-05-26 |
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