JPS5690349A - Error correction code circuit - Google Patents

Error correction code circuit

Info

Publication number
JPS5690349A
JPS5690349A JP16902779A JP16902779A JPS5690349A JP S5690349 A JPS5690349 A JP S5690349A JP 16902779 A JP16902779 A JP 16902779A JP 16902779 A JP16902779 A JP 16902779A JP S5690349 A JPS5690349 A JP S5690349A
Authority
JP
Japan
Prior art keywords
error correction
correction code
data
stored
memory
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
JP16902779A
Other languages
Japanese (ja)
Inventor
Ryushi Hiroya
Hiroki Masuda
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 JP16902779A priority Critical patent/JPS5690349A/en
Publication of JPS5690349A publication Critical patent/JPS5690349A/en
Pending legal-status Critical Current

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  • Detection And Correction Of Errors (AREA)

Abstract

PURPOSE: To obtain a necessary error correction code in a short time by means of a simple constitution by storing in advance an error correction code corresponding to each data as address information to the error correction code memory.
CONSTITUTION: The error correction code corresponding to each data which becomes an object of the memory systrem is stored as address information in the error correction code memory ECCM. Now, when a data is stored in the data register DR, an eror correction code is read out from the address of the memory ECCM. This error correction code constitutes a Hamming code together with the data which has been already stored in the register DR, and it is stored in the memory device M. In case when the stored data is read out, 1 error correction and 2 error detection are executed with the error correction code. In this way, when a data is stored in the memory device, an error correction code to be added is obtained easily and swiftly.
COPYRIGHT: (C)1981,JPO&Japio
JP16902779A 1979-12-25 1979-12-25 Error correction code circuit Pending JPS5690349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16902779A JPS5690349A (en) 1979-12-25 1979-12-25 Error correction code circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16902779A JPS5690349A (en) 1979-12-25 1979-12-25 Error correction code circuit

Publications (1)

Publication Number Publication Date
JPS5690349A true JPS5690349A (en) 1981-07-22

Family

ID=15878959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16902779A Pending JPS5690349A (en) 1979-12-25 1979-12-25 Error correction code circuit

Country Status (1)

Country Link
JP (1) JPS5690349A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955548A (en) * 1982-09-25 1984-03-30 Nippon Telegr & Teleph Corp <Ntt> Recognition coding and decoding system
JPH02126500A (en) * 1988-11-04 1990-05-15 Mitsubishi Electric Corp Semiconductor memory device equipped with error detecting and correcting function
JP2001043143A (en) * 1997-09-30 2001-02-16 Sony Corp Storage device, data processing system, and writing and reading method for data
KR100527610B1 (en) * 1997-09-30 2006-03-28 소니 가부시끼 가이샤 Storage devices, data processing systems, and how to record and read data

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49114817A (en) * 1973-02-28 1974-11-01
JPS53101952A (en) * 1977-02-17 1978-09-05 Nec Corp Error correcting detection circuit
JPS54100631A (en) * 1977-12-30 1979-08-08 Siemens Ag Circuit device for coding or decoding binary information

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49114817A (en) * 1973-02-28 1974-11-01
JPS53101952A (en) * 1977-02-17 1978-09-05 Nec Corp Error correcting detection circuit
JPS54100631A (en) * 1977-12-30 1979-08-08 Siemens Ag Circuit device for coding or decoding binary information

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955548A (en) * 1982-09-25 1984-03-30 Nippon Telegr & Teleph Corp <Ntt> Recognition coding and decoding system
JPH02126500A (en) * 1988-11-04 1990-05-15 Mitsubishi Electric Corp Semiconductor memory device equipped with error detecting and correcting function
JP2001043143A (en) * 1997-09-30 2001-02-16 Sony Corp Storage device, data processing system, and writing and reading method for data
KR100527610B1 (en) * 1997-09-30 2006-03-28 소니 가부시끼 가이샤 Storage devices, data processing systems, and how to record and read data

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