JPS5665390A - Magnetic bubble memory control system - Google Patents
Magnetic bubble memory control systemInfo
- 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
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
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)
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 |
-
1979
- 1979-10-31 JP JP13992679A patent/JPS592113B2/en not_active Expired
Cited By (3)
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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