JPS57117198A - Memory system with parity - Google Patents

Memory system with parity

Info

Publication number
JPS57117198A
JPS57117198A JP56003411A JP341181A JPS57117198A JP S57117198 A JPS57117198 A JP S57117198A JP 56003411 A JP56003411 A JP 56003411A JP 341181 A JP341181 A JP 341181A JP S57117198 A JPS57117198 A JP S57117198A
Authority
JP
Japan
Prior art keywords
circuit
parity
storage element
bit
signal
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
JP56003411A
Other languages
Japanese (ja)
Inventor
Kiyotaka Sugino
Mikio Yamamoto
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP56003411A priority Critical patent/JPS57117198A/en
Publication of JPS57117198A publication Critical patent/JPS57117198A/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

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 minimize the complexity of circuit constitution through the addition of parity and to assure the reliability of data, by using the same parallel storage element as a main storage element as a parity storage element. CONSTITUTION:The same parallel storage element as a main storage element Mi is used as a parity storage element PM, and each bit of the element PM is corresponded to the word of element groups MO-M7 one by one through the function of a bit selection circuit 5. The lower rank bit of an address signal A is given to the element PM and the upper rank bit is given to the circuit 5. At data readout, a selection signal SEL and a read/write control signal R/W is applied to the element PM via the circuit 5, the parity signal from the element PM is read out in parallel and applied to the circuit 5. The circuit 5 selects only one bit designated among parity signal groups and gives it to a control circuit 4. The circuit 4 makes parity check with a data D of one word read out from the element group M and a parity signal Dp.
JP56003411A 1981-01-13 1981-01-13 Memory system with parity Pending JPS57117198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56003411A JPS57117198A (en) 1981-01-13 1981-01-13 Memory system with parity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56003411A JPS57117198A (en) 1981-01-13 1981-01-13 Memory system with parity

Publications (1)

Publication Number Publication Date
JPS57117198A true JPS57117198A (en) 1982-07-21

Family

ID=11556633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56003411A Pending JPS57117198A (en) 1981-01-13 1981-01-13 Memory system with parity

Country Status (1)

Country Link
JP (1) JPS57117198A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200350A (en) * 1983-04-27 1984-11-13 Usac Electronics Ind Co Ltd Parity check device
JPS6180341A (en) * 1984-09-26 1986-04-23 Yokogawa Hokushin Electric Corp Static random access memory device
JPS6262360U (en) * 1985-10-04 1987-04-17
JPS63261435A (en) * 1987-04-20 1988-10-28 Fujitsu Kiden Ltd Parity error check system
JPS6421651A (en) * 1987-07-17 1989-01-25 Fanuc Ltd Memory device
JPH02226433A (en) * 1989-02-28 1990-09-10 Fuji Facom Corp Parity check system
JPH0314149A (en) * 1989-06-13 1991-01-22 Matsushita Electric Ind Co Ltd Read/write controller of memory unit
JP2013080455A (en) * 2011-09-30 2013-05-02 Rambus Inc Sharing check bit memory device between groups of memory devices

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200350A (en) * 1983-04-27 1984-11-13 Usac Electronics Ind Co Ltd Parity check device
JPS6180341A (en) * 1984-09-26 1986-04-23 Yokogawa Hokushin Electric Corp Static random access memory device
JPS6262360U (en) * 1985-10-04 1987-04-17
JPS63261435A (en) * 1987-04-20 1988-10-28 Fujitsu Kiden Ltd Parity error check system
JPS6421651A (en) * 1987-07-17 1989-01-25 Fanuc Ltd Memory device
WO1989000731A1 (en) * 1987-07-17 1989-01-26 Fanuc Ltd Memory device
JPH02226433A (en) * 1989-02-28 1990-09-10 Fuji Facom Corp Parity check system
JPH0314149A (en) * 1989-06-13 1991-01-22 Matsushita Electric Ind Co Ltd Read/write controller of memory unit
JP2013080455A (en) * 2011-09-30 2013-05-02 Rambus Inc Sharing check bit memory device between groups of memory devices

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