JPS5665390A - Magnetic bubble memory control system - Google Patents

Magnetic bubble memory control system

Info

Publication number
JPS5665390A
JPS5665390A JP13992679A JP13992679A JPS5665390A JP S5665390 A JPS5665390 A JP S5665390A JP 13992679 A JP13992679 A JP 13992679A JP 13992679 A JP13992679 A JP 13992679A JP S5665390 A JPS5665390 A JP S5665390A
Authority
JP
Japan
Prior art keywords
memory
information
control
magnetic bubble
bubble memory
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
JP13992679A
Other languages
Japanese (ja)
Other versions
JPS592113B2 (en
Inventor
Takeshi Ito
Takeshi Masuda
Sumio Furukawa
Nobuo Amano
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 JP13992679A priority Critical patent/JPS592113B2/en
Publication of JPS5665390A publication Critical patent/JPS5665390A/en
Publication of JPS592113B2 publication Critical patent/JPS592113B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To control a bubble memory used as a file memory device with simple constitution by rewriting readout control information on the basis of a decision on the establishment of specific conditions of information read out of the magnetic bubble memory.
CONSTITUTION: When memory information transferred from minor loop 401 to major loop 402 of magnetic bubble memory 108 while brought under the timing control of a step-number counter through control memory 104 stored with status information and the number of steps and the read out by read sensor 109 provided with sensor 403 satisfied specific conditions of retrieval information passed through data register 101, the contents of memory 104 are rewritten through specific-condition deciding circuit 110, control information generating circuit 103, etc. Then, information is written into memory 108 by peripheral control circuit 107, write driver 106, etc., so that functions of the magnetic bubble memory used as a file memory device can be modified with simple constitution that does not need any troublesome circuit, etc., controlling a time counting counter to perform write operation, etc., based upon the retrieval information.
COPYRIGHT: (C)1981,JPO&Japio
JP13992679A 1979-10-31 1979-10-31 Magnetic bubble memory control method Expired JPS592113B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13992679A JPS592113B2 (en) 1979-10-31 1979-10-31 Magnetic bubble memory control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13992679A JPS592113B2 (en) 1979-10-31 1979-10-31 Magnetic bubble memory control method

Publications (2)

Publication Number Publication Date
JPS5665390A true JPS5665390A (en) 1981-06-03
JPS592113B2 JPS592113B2 (en) 1984-01-17

Family

ID=15256872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13992679A Expired JPS592113B2 (en) 1979-10-31 1979-10-31 Magnetic bubble memory control method

Country Status (1)

Country Link
JP (1) JPS592113B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658376A (en) * 1983-11-30 1987-04-14 Hitachi, Ltd. Magnetic bubble file system
JPS63153623A (en) * 1987-09-10 1988-06-27 Hitachi Ltd Storage device and access method for same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658376A (en) * 1983-11-30 1987-04-14 Hitachi, Ltd. Magnetic bubble file system
JPS63153623A (en) * 1987-09-10 1988-06-27 Hitachi Ltd Storage device and access method for same
JPH0320773B2 (en) * 1987-09-10 1991-03-20 Hitachi Ltd

Also Published As

Publication number Publication date
JPS592113B2 (en) 1984-01-17

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