JPS56137583A - Storage device - Google Patents

Storage device

Info

Publication number
JPS56137583A
JPS56137583A JP3921080A JP3921080A JPS56137583A JP S56137583 A JPS56137583 A JP S56137583A JP 3921080 A JP3921080 A JP 3921080A JP 3921080 A JP3921080 A JP 3921080A JP S56137583 A JPS56137583 A JP S56137583A
Authority
JP
Japan
Prior art keywords
refresh
error detection
designated
correction
same time
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
JP3921080A
Other languages
Japanese (ja)
Inventor
Yutaka Kamiyanagi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3921080A priority Critical patent/JPS56137583A/en
Publication of JPS56137583A publication Critical patent/JPS56137583A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
    • G11C29/08—Functional testing, e.g. testing during refresh, power-on self testing [POST] or distributed testing

Landscapes

  • Dram (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To increase the efficiency of usage, by making the refresh operation and patrol operation in the same time. CONSTITUTION:Dynamic RAM elements 9-0-9-3, address counter 4 renewing the content every refresh, and a circuit making error detection and correction of readout data, are provided. The readout data including the error detection and correction code in the refresh area designated with the counter 4 is designated with the multiplexer 5 and the data designated when refresh is made is read out and fed to the error detection and correction circuit. As a result, the patrol operation and refresh operation can be made at the same time.
JP3921080A 1980-03-26 1980-03-26 Storage device Pending JPS56137583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3921080A JPS56137583A (en) 1980-03-26 1980-03-26 Storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3921080A JPS56137583A (en) 1980-03-26 1980-03-26 Storage device

Publications (1)

Publication Number Publication Date
JPS56137583A true JPS56137583A (en) 1981-10-27

Family

ID=12546767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3921080A Pending JPS56137583A (en) 1980-03-26 1980-03-26 Storage device

Country Status (1)

Country Link
JP (1) JPS56137583A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263312A2 (en) * 1986-09-08 1988-04-13 Kabushiki Kaisha Toshiba Semiconductor memory device with a self-testing function
JPH03134900A (en) * 1989-10-18 1991-06-07 Internatl Business Mach Corp <Ibm> Storage device
JPH0713786A (en) * 1992-11-30 1995-01-17 Internatl Business Mach Corp <Ibm> Method and apparatus for correciton of error

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263312A2 (en) * 1986-09-08 1988-04-13 Kabushiki Kaisha Toshiba Semiconductor memory device with a self-testing function
JPH03134900A (en) * 1989-10-18 1991-06-07 Internatl Business Mach Corp <Ibm> Storage device
JPH0713786A (en) * 1992-11-30 1995-01-17 Internatl Business Mach Corp <Ibm> Method and apparatus for correciton of error

Similar Documents

Publication Publication Date Title
JPS5296517A (en) Memory unit
ES239659U (en) Explosion protection for storage batteries
JPS5336430A (en) Character print system for program calculator
JPS5238661A (en) Absorptive refrigerator
JPS52115642A (en) Electronic device
JPS56137583A (en) Storage device
JPS54109728A (en) Memory device
JPS5394133A (en) Data converter
JPS5324735A (en) Detection and correction system for data error
JPS5350935A (en) Print control memory unit
JPS5395532A (en) Error correction system for read only memory unit
JPS5619598A (en) Memory error control unit
JPS53110433A (en) Memory unit
JPS5436144A (en) Address conversion unit
JPS5421131A (en) Memory unit
JPS53123686A (en) Binary memory element
JPS5218072A (en) Garbage fermentation device
JPS5358732A (en) Memory unit
JPS5436145A (en) Microprogram control unit
JPS51120275A (en) Humidity transducer and its production method
JPS52147030A (en) Cell storage unit
JPS53149736A (en) Micro-program controller
JPS52116029A (en) Partial correction system for fixed memory unit
JPS5384535A (en) Memory unit
JPS5336153A (en) Microprogram control unit