JPS62212854A - Automatic error correcting memory device - Google Patents

Automatic error correcting memory device

Info

Publication number
JPS62212854A
JPS62212854A JP61056420A JP5642086A JPS62212854A JP S62212854 A JPS62212854 A JP S62212854A JP 61056420 A JP61056420 A JP 61056420A JP 5642086 A JP5642086 A JP 5642086A JP S62212854 A JPS62212854 A JP S62212854A
Authority
JP
Japan
Prior art keywords
error
data
memory
circuit
corrected
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
JP61056420A
Other languages
Japanese (ja)
Inventor
Kazuo Nakagawa
Hiroshi Hojo
Yasuo Ishige
Atsushi Itsukaichi
Original Assignee
Nippon Telegr & Teleph Corp <Ntt>
Toshiba Corp
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 Nippon Telegr & Teleph Corp <Ntt>, Toshiba Corp filed Critical Nippon Telegr & Teleph Corp <Ntt>
Priority to JP61056420A priority Critical patent/JPS62212854A/en
Publication of JPS62212854A publication Critical patent/JPS62212854A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To correct soft errors to be increased in accordance with time passage by specifying the addresses of a memory element and an error correction detecting memory element to write error-corrected data in all the address spaces of the memory element and the error correction detecting memory element periodically at the time of an automatic reading data correction mode.
CONSTITUTION: Data read out by the memory element 2 are sent to an error correcting circuit 5 and data read out by the error correction detecting memory element 3 are detected about the existence of an error by an error detecting circuit 6. When there is no error, the data of the memory element 2 are transferred to a data bus D, but if there is any error, the error is corrected by the circuit 5 and the error-corrected data are transferred to the data bus D and also rewritten in the memory element 2 through a data multiplexer 11. The corrected data are also sent to an error correction detecting bit forming circuit 4 through the data multiplexer 11 and error correction detecting bit data are formed again and written in the circuit 6 and the element 3.
COPYRIGHT: (C)1987,JPO&Japio
JP61056420A 1986-03-14 1986-03-14 Automatic error correcting memory device Pending JPS62212854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61056420A JPS62212854A (en) 1986-03-14 1986-03-14 Automatic error correcting memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61056420A JPS62212854A (en) 1986-03-14 1986-03-14 Automatic error correcting memory device

Publications (1)

Publication Number Publication Date
JPS62212854A true JPS62212854A (en) 1987-09-18

Family

ID=13026609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61056420A Pending JPS62212854A (en) 1986-03-14 1986-03-14 Automatic error correcting memory device

Country Status (1)

Country Link
JP (1) JPS62212854A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0224752A (en) * 1988-06-15 1990-01-26 Internatl Business Mach Corp <Ibm> Smart memory card

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55101199A (en) * 1979-01-22 1980-08-01 Hitachi Ltd Memory refresh unit
JPS57100694A (en) * 1980-12-12 1982-06-22 Toshiba Corp Storage device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55101199A (en) * 1979-01-22 1980-08-01 Hitachi Ltd Memory refresh unit
JPS57100694A (en) * 1980-12-12 1982-06-22 Toshiba Corp Storage device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0224752A (en) * 1988-06-15 1990-01-26 Internatl Business Mach Corp <Ibm> Smart memory card

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