JPS5752948A - Method for giving parity bit for digital signal processing equipment - Google Patents
Method for giving parity bit for digital signal processing equipmentInfo
- Publication number
- JPS5752948A JPS5752948A JP55126703A JP12670380A JPS5752948A JP S5752948 A JPS5752948 A JP S5752948A JP 55126703 A JP55126703 A JP 55126703A JP 12670380 A JP12670380 A JP 12670380A JP S5752948 A JPS5752948 A JP S5752948A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- bits
- rom
- parity
- 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.)
- 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)
- Error Detection And Correction (AREA)
Abstract
PURPOSE:To prevent increases in bit number of the ROM in which numeric data and parity bits are stored, by using unnecessary bits other than significant digits of numeric data to be stored in the ROM as parity bits. CONSTITUTION:Among numerical data of sixteen bits, fifteen bits are used as significant bits and the remaining one bit is left as an unnecessary bit. Parity data are written in the hatched part of the ROM which is the location of this unnecessary bit. Since the location of the parity bit varies depending on the address of the ROM, addresses are developed by a decoder DEC and thus cut and divided information is obtained. To read numerical data, data of adjacent bit of the parity bit or a constant value of ''0'' or ''1'' is output as the information for selection from a selector SEL. In this way, the bit number of the ROM does not increase and ROMIC will never increase.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55126703A JPS5752948A (en) | 1980-09-12 | 1980-09-12 | Method for giving parity bit for digital signal processing equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55126703A JPS5752948A (en) | 1980-09-12 | 1980-09-12 | Method for giving parity bit for digital signal processing equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5752948A true JPS5752948A (en) | 1982-03-29 |
JPS6131490B2 JPS6131490B2 (en) | 1986-07-21 |
Family
ID=14941755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55126703A Granted JPS5752948A (en) | 1980-09-12 | 1980-09-12 | Method for giving parity bit for digital signal processing equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5752948A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6365050A (en) * | 1986-09-04 | 1988-03-23 | Ngk Spark Plug Co Ltd | Cermet for cutting tool |
-
1980
- 1980-09-12 JP JP55126703A patent/JPS5752948A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6365050A (en) * | 1986-09-04 | 1988-03-23 | Ngk Spark Plug Co Ltd | Cermet for cutting tool |
JPH0617532B2 (en) * | 1986-09-04 | 1994-03-09 | 日本特殊陶業株式会社 | Cermet member for cutting tools |
Also Published As
Publication number | Publication date |
---|---|
JPS6131490B2 (en) | 1986-07-21 |
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