JPS554775A - Generation and check circuit for hamming code for storage device - Google Patents

Generation and check circuit for hamming code for storage device

Info

Publication number
JPS554775A
JPS554775A JP7840178A JP7840178A JPS554775A JP S554775 A JPS554775 A JP S554775A JP 7840178 A JP7840178 A JP 7840178A JP 7840178 A JP7840178 A JP 7840178A JP S554775 A JPS554775 A JP S554775A
Authority
JP
Japan
Prior art keywords
circuit
register
code
hamming
byte
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.)
Granted
Application number
JP7840178A
Other languages
Japanese (ja)
Other versions
JPS6142305B2 (en
Inventor
Koichi Tsukizoe
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7840178A priority Critical patent/JPS554775A/en
Publication of JPS554775A publication Critical patent/JPS554775A/en
Publication of JPS6142305B2 publication Critical patent/JPS6142305B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Detection And Correction Of Errors (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)

Abstract

PURPOSE: To perform error detection correction with a high precision by simplifying the constitution of a Hamming code check circuit by the time division processing.
CONSTITUTION: Four bytes of an error detection code formed by (M×N)-byte data (M is an integer equal to or larger than 1, and N is an integer equal to or larger than 2) are subjected to 1/4 selection by selection circuit 10 controlled by control circuit 40 and become one-byte data formed by data bits D0 to D7 and are inputted to Hamming register 30 through exclusive OR circuits 20 to 27. This circuit 40 outputs byte designation signal 400, initializing signal 420 of register 30, input effective designation signals 410 to 413, etc., and circuit 10 and register 30 are subjected to the time division processing to synthesize successive preceding intermediate Hamming bit codes formed in register 30, and exclusive OR circuit 31 generates the Hamming bit code. The check of this code is similarly subjected to the time division processing to perform the processing of multi-byte error detection code data with a high precision in a simple constitution.
COPYRIGHT: (C)1980,JPO&Japio
JP7840178A 1978-06-27 1978-06-27 Generation and check circuit for hamming code for storage device Granted JPS554775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7840178A JPS554775A (en) 1978-06-27 1978-06-27 Generation and check circuit for hamming code for storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7840178A JPS554775A (en) 1978-06-27 1978-06-27 Generation and check circuit for hamming code for storage device

Publications (2)

Publication Number Publication Date
JPS554775A true JPS554775A (en) 1980-01-14
JPS6142305B2 JPS6142305B2 (en) 1986-09-20

Family

ID=13660994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7840178A Granted JPS554775A (en) 1978-06-27 1978-06-27 Generation and check circuit for hamming code for storage device

Country Status (1)

Country Link
JP (1) JPS554775A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011109476A (en) * 2009-11-18 2011-06-02 Fujitsu Ltd Error detecting/correcting code generating circuit, and method of controlling the same
JP2015072727A (en) * 2013-10-03 2015-04-16 富士通セミコンダクター株式会社 Ferroelectric memory device, and memory writing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011109476A (en) * 2009-11-18 2011-06-02 Fujitsu Ltd Error detecting/correcting code generating circuit, and method of controlling the same
JP2015072727A (en) * 2013-10-03 2015-04-16 富士通セミコンダクター株式会社 Ferroelectric memory device, and memory writing method

Also Published As

Publication number Publication date
JPS6142305B2 (en) 1986-09-20

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