JPS56107399A - Parity check system - Google Patents

Parity check system

Info

Publication number
JPS56107399A
JPS56107399A JP983080A JP983080A JPS56107399A JP S56107399 A JPS56107399 A JP S56107399A JP 983080 A JP983080 A JP 983080A JP 983080 A JP983080 A JP 983080A JP S56107399 A JPS56107399 A JP S56107399A
Authority
JP
Japan
Prior art keywords
parity
parity check
odd
systems
even number
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
Application number
JP983080A
Other languages
Japanese (ja)
Inventor
Morimasa Miyoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP983080A priority Critical patent/JPS56107399A/en
Publication of JPS56107399A publication Critical patent/JPS56107399A/en
Pending legal-status Critical Current

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/09—Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit

Abstract

PURPOSE:To enable sure parity check even after the restoration of power failure, by providing dual check systems of an odd and even number systems. CONSTITUTION:The vertical parity bit 31 of ICRAM30 is formed with an odd and even number of parity bits 311, 312, and the horizontal parity word 32 is formed with an odd and even number of parity bytes 321, 322. Be these dual system parity check systems, even if the bit pattern is all 0 or all 1 at the restoration of power failure, the parity check can be ensured.
JP983080A 1980-01-29 1980-01-29 Parity check system Pending JPS56107399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP983080A JPS56107399A (en) 1980-01-29 1980-01-29 Parity check system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP983080A JPS56107399A (en) 1980-01-29 1980-01-29 Parity check system

Publications (1)

Publication Number Publication Date
JPS56107399A true JPS56107399A (en) 1981-08-26

Family

ID=11731040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP983080A Pending JPS56107399A (en) 1980-01-29 1980-01-29 Parity check system

Country Status (1)

Country Link
JP (1) JPS56107399A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283686A2 (en) * 1987-03-25 1988-09-28 Mitsubishi Denki Kabushiki Kaisha Coding and decoding method
WO2003041991A1 (en) * 2001-10-17 2003-05-22 General Electric Company Signal error detection in railroad communication system
JP2006031434A (en) * 2004-07-16 2006-02-02 Yamaha Corp Semiconductor integrated circuit
JP2008521123A (en) * 2004-11-19 2008-06-19 サムスン エレクトロニクス カンパニー リミテッド Data processing apparatus and method for flash memory

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283686A2 (en) * 1987-03-25 1988-09-28 Mitsubishi Denki Kabushiki Kaisha Coding and decoding method
WO2003041991A1 (en) * 2001-10-17 2003-05-22 General Electric Company Signal error detection in railroad communication system
CN100409576C (en) * 2001-10-17 2008-08-06 通用电气公司 Signal error detection in railroad communication system
JP2006031434A (en) * 2004-07-16 2006-02-02 Yamaha Corp Semiconductor integrated circuit
JP2008521123A (en) * 2004-11-19 2008-06-19 サムスン エレクトロニクス カンパニー リミテッド Data processing apparatus and method for flash memory
US8015344B2 (en) 2004-11-19 2011-09-06 Samsung Electronics Co., Ltd. Apparatus and method for processing data of flash memory
JP4902547B2 (en) * 2004-11-19 2012-03-21 サムスン エレクトロニクス カンパニー リミテッド Data processing apparatus and method for flash memory
US8230166B2 (en) 2004-11-19 2012-07-24 Samsung Electronics Co., Ltd. Apparatus and method for processing data of flash memory

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