JPS56165997A - Parity check system for storage device - Google Patents
Parity check system for storage deviceInfo
- Publication number
- JPS56165997A JPS56165997A JP7028580A JP7028580A JPS56165997A JP S56165997 A JPS56165997 A JP S56165997A JP 7028580 A JP7028580 A JP 7028580A JP 7028580 A JP7028580 A JP 7028580A JP S56165997 A JPS56165997 A JP S56165997A
- Authority
- JP
- Japan
- Prior art keywords
- parity
- address
- parity check
- circuit
- data
- 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
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 enable parity check to an address without increasing the number of parity bits at storage section, by selecting one of parity generation and check circuit for data or address and making it effective. CONSTITUTION:When a contact D of a parity check control section 80 is selected and an output of the control section 80 is at low level, a parity generating circuit 32 for data is selected via a write-in signal selecting circuit 70, and a data parity error signal gate circuit 82 is open and a read data parity check circuit 60 is selected. When this contact D is switched to a contact A, an address parity generating circuit 22 and an address parity check circuit 64 are selected similarly, and the parity check for address is made. Through the selection of one of a data system or an address system, the parity bit of a storage section 10 is not increased and thus, the parity check can be made to the address without making complicated the constitution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7028580A JPS56165997A (en) | 1980-05-27 | 1980-05-27 | Parity check system for storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7028580A JPS56165997A (en) | 1980-05-27 | 1980-05-27 | Parity check system for storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56165997A true JPS56165997A (en) | 1981-12-19 |
Family
ID=13427051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7028580A Pending JPS56165997A (en) | 1980-05-27 | 1980-05-27 | Parity check system for storage device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56165997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62205456A (en) * | 1986-03-06 | 1987-09-10 | Nec Eng Ltd | Memory device |
-
1980
- 1980-05-27 JP JP7028580A patent/JPS56165997A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62205456A (en) * | 1986-03-06 | 1987-09-10 | Nec Eng Ltd | Memory device |
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