JPS5231624A - Memory system - Google Patents

Memory system

Info

Publication number
JPS5231624A
JPS5231624A JP50058206A JP5820675A JPS5231624A JP S5231624 A JPS5231624 A JP S5231624A JP 50058206 A JP50058206 A JP 50058206A JP 5820675 A JP5820675 A JP 5820675A JP S5231624 A JPS5231624 A JP S5231624A
Authority
JP
Japan
Prior art keywords
memory system
unit
basic unit
redundant
disabled
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
JP50058206A
Other languages
Japanese (ja)
Other versions
JPS5713957B2 (en
Inventor
Hiroshi Egawa
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP50058206A priority Critical patent/JPS5231624A/en
Publication of JPS5231624A publication Critical patent/JPS5231624A/en
Publication of JPS5713957B2 publication Critical patent/JPS5713957B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • For Increasing The Reliability Of Semiconductor Memories (AREA)
  • Static Random-Access Memory (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Hardware Redundancy (AREA)

Abstract

PURPOSE: Improvement of the yield rate of chips large in size and capacity by dividing the cell array each of the basic unit and the redundant unit into switching blocks to switch the basic unit with disabled storing location, if any, to the redundant unit per switching block.
COPYRIGHT: (C)1977,JPO&Japio
JP50058206A 1975-05-15 1975-05-15 Memory system Granted JPS5231624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50058206A JPS5231624A (en) 1975-05-15 1975-05-15 Memory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50058206A JPS5231624A (en) 1975-05-15 1975-05-15 Memory system

Publications (2)

Publication Number Publication Date
JPS5231624A true JPS5231624A (en) 1977-03-10
JPS5713957B2 JPS5713957B2 (en) 1982-03-20

Family

ID=13077552

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50058206A Granted JPS5231624A (en) 1975-05-15 1975-05-15 Memory system

Country Status (1)

Country Link
JP (1) JPS5231624A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255227A (en) * 1991-02-06 1993-10-19 Hewlett-Packard Company Switched row/column memory redundancy
US5539697A (en) * 1994-08-03 1996-07-23 Bi-Search Corporation Method and structure for using defective unrepairable semiconductor memory

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922050A (en) * 1972-04-24 1974-02-27
JPS4998938A (en) * 1972-12-29 1974-09-19
JPS5010036A (en) * 1973-05-23 1975-02-01

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922050A (en) * 1972-04-24 1974-02-27
JPS4998938A (en) * 1972-12-29 1974-09-19
JPS5010036A (en) * 1973-05-23 1975-02-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255227A (en) * 1991-02-06 1993-10-19 Hewlett-Packard Company Switched row/column memory redundancy
US5539697A (en) * 1994-08-03 1996-07-23 Bi-Search Corporation Method and structure for using defective unrepairable semiconductor memory

Also Published As

Publication number Publication date
JPS5713957B2 (en) 1982-03-20

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