JPS5488735A - Memory system - Google Patents
Memory systemInfo
- Publication number
- JPS5488735A JPS5488735A JP15713577A JP15713577A JPS5488735A JP S5488735 A JPS5488735 A JP S5488735A JP 15713577 A JP15713577 A JP 15713577A JP 15713577 A JP15713577 A JP 15713577A JP S5488735 A JPS5488735 A JP S5488735A
- Authority
- JP
- Japan
- Prior art keywords
- units
- selection
- redundancy
- blocks
- basic
- 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
Links
Abstract
PURPOSE: To increase the ability saving deficiency, by splitting the basic unit and the redundancy unit independently into a plurality of selection blocks groups, and by changing the combination on the condition that the number of deficiencies in the groups is more or less than the preset number.
CONSTITUTION: In the memory unit which splits the basic units 31 to 34 and the redundancy units 35, 36 of the memory element 2 respectively into a plurality of selection blocks and selects the selection block including deficiencies in the basic units 31 to 36 into the selection block having no deficiency in the redundancy units 35 and 36, the basic units 31 to 34 and the redundancy units 35, 36 are respectively split into a plurality of selection block groups. Further, if the deficient blocks more than the preset number in the group of the basic unit system are present, selection is mede to the group not including the deficient blocks of the redundancy units 35 and 36, and if it is less than the preset value, they are selected to the selection blocks having no deficiency of the redundancy units 35, 36, in group unit.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52157135A JPS5855600B2 (en) | 1977-12-26 | 1977-12-26 | Memory method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52157135A JPS5855600B2 (en) | 1977-12-26 | 1977-12-26 | Memory method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5488735A true JPS5488735A (en) | 1979-07-14 |
JPS5855600B2 JPS5855600B2 (en) | 1983-12-10 |
Family
ID=15642959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52157135A Expired JPS5855600B2 (en) | 1977-12-26 | 1977-12-26 | Memory method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5855600B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6233399U (en) * | 1985-08-19 | 1987-02-27 | ||
JPS62177397U (en) * | 1986-04-30 | 1987-11-11 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51147919A (en) * | 1975-06-14 | 1976-12-18 | Fujitsu Ltd | Memory device |
-
1977
- 1977-12-26 JP JP52157135A patent/JPS5855600B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51147919A (en) * | 1975-06-14 | 1976-12-18 | Fujitsu Ltd | Memory device |
Also Published As
Publication number | Publication date |
---|---|
JPS5855600B2 (en) | 1983-12-10 |
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