JPS5475940A - Memory control system - Google Patents

Memory control system

Info

Publication number
JPS5475940A
JPS5475940A JP14276077A JP14276077A JPS5475940A JP S5475940 A JPS5475940 A JP S5475940A JP 14276077 A JP14276077 A JP 14276077A JP 14276077 A JP14276077 A JP 14276077A JP S5475940 A JPS5475940 A JP S5475940A
Authority
JP
Japan
Prior art keywords
defective
counter
memory
information
group
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
JP14276077A
Other languages
Japanese (ja)
Other versions
JPS5721787B2 (en
Inventor
Kazuo Furukawa
Sumio Furukawa
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.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Ltd
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 Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP14276077A priority Critical patent/JPS5475940A/en
Priority to SE7804449A priority patent/SE434686B/en
Priority to US05/897,692 priority patent/US4233669A/en
Priority to DE2817134A priority patent/DE2817134C2/en
Priority to GB15720/78A priority patent/GB1595410A/en
Publication of JPS5475940A publication Critical patent/JPS5475940A/en
Publication of JPS5721787B2 publication Critical patent/JPS5721787B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
    • G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
    • G11C19/0875—Organisation of a plurality of magnetic shift registers

Landscapes

  • Shift Register Type Memory (AREA)

Abstract

PURPOSE:To realize the memory control system easy for constitution, by providing the memory storing the accumulated information for the defective group with the memory group storing the information of non-defective and defective loop group in a plurality of information loops of shift register memories. CONSTITUTION:Corresponding to the additional memories 20 and 21 writhing in ''0'' to the address N if the Nth loop group is good and ''1'' if defective, the memories 160 and 161 which write in the difference between the Nth normal loop group number Nm and N to the address N and store the information of the accumulating number of the defective loop group are provided. At a certain time, the address register 4 is collated with the time counter 3, and even if the transfer display FF7 is turned on, the content of the memory 160 is read out at the accumulating display counter 170, and if it is more than 1, the output of the gate 140 and the defective display signal 13 are 1, and no data transfer is made. When time is advanced and the counter 170 is counter down into 0, the output of the gate 180 is 0, and the output of FF7 is inputted from the gate 8 to the transfer control circuit 9, starting transfer.
JP14276077A 1977-04-20 1977-11-30 Memory control system Granted JPS5475940A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP14276077A JPS5475940A (en) 1977-11-30 1977-11-30 Memory control system
SE7804449A SE434686B (en) 1977-04-20 1978-04-19 Memory controller
US05/897,692 US4233669A (en) 1977-04-20 1978-04-19 Redundant bubble memory control system
DE2817134A DE2817134C2 (en) 1977-04-20 1978-04-19 Storage control system
GB15720/78A GB1595410A (en) 1977-04-20 1978-04-20 Memory control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14276077A JPS5475940A (en) 1977-11-30 1977-11-30 Memory control system

Publications (2)

Publication Number Publication Date
JPS5475940A true JPS5475940A (en) 1979-06-18
JPS5721787B2 JPS5721787B2 (en) 1982-05-10

Family

ID=15322931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14276077A Granted JPS5475940A (en) 1977-04-20 1977-11-30 Memory control system

Country Status (1)

Country Link
JP (1) JPS5475940A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6285475B2 (en) 2016-01-29 2018-02-28 ファナック株式会社 Motor drive device having discharge function

Also Published As

Publication number Publication date
JPS5721787B2 (en) 1982-05-10

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