JPS5488735A - Memory system - Google Patents

Memory system

Info

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
Application number
JP15713577A
Other languages
Japanese (ja)
Other versions
JPS5855600B2 (en
Inventor
Kiyoshi Masuda
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 JP52157135A priority Critical patent/JPS5855600B2/en
Publication of JPS5488735A publication Critical patent/JPS5488735A/en
Publication of JPS5855600B2 publication Critical patent/JPS5855600B2/en
Expired legal-status Critical Current

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
JP52157135A 1977-12-26 1977-12-26 Memory method Expired JPS5855600B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51147919A (en) * 1975-06-14 1976-12-18 Fujitsu Ltd Memory device

Patent Citations (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
JPS5236230A (en) Constolling cylinders to supply fuel equipment
DE3788793D1 (en) MULTI-ROLLING COLD ROLLING MILL.
JPS5488735A (en) Memory system
JPS5299736A (en) Data processing unit
JPS5211730A (en) Information processing unit
JPS5371531A (en) Bar code reader
JPS5351934A (en) Sub channel metal access control system
JPS5231624A (en) Memory system
JPS5230130A (en) Store control system of multihierarchy memory
JPS52129343A (en) Command chaining system
JPS5356936A (en) Transfer control system
JPS5437644A (en) Information processing system
JPS5390832A (en) Microorder bus time-division controller
JPS53119445A (en) Ac glow discharge heater
JPS5350937A (en) Chracter control system
JPS5267227A (en) Memory unit
JPS5413210A (en) Coding and decoding system for color graph
JPS51127635A (en) Operation control system of the multi-processing equipment
JPS53145524A (en) Character display control system
JPS5379446A (en) External memory control unit
JPS53123110A (en) Complex magnetic disc memory system
JPS5269538A (en) Interruption control system for information processing unit
JPS5372539A (en) Interface control system
JPS52116570A (en) Palletizing method and apparatus
JPS52135979A (en) Electric power source