JPS5651081A - Bubble memory device - Google Patents
Bubble memory deviceInfo
- Publication number
- JPS5651081A JPS5651081A JP12762379A JP12762379A JPS5651081A JP S5651081 A JPS5651081 A JP S5651081A JP 12762379 A JP12762379 A JP 12762379A JP 12762379 A JP12762379 A JP 12762379A JP S5651081 A JPS5651081 A JP S5651081A
- Authority
- JP
- Japan
- Prior art keywords
- failed
- information
- chip
- failed information
- chips
- 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.)
- Pending
Links
Abstract
PURPOSE: To enable the restorage of failed information, even if the failed information stored in the chip is disturbed due to failure of power supply or the like, by storing the failed information in a plurality of bubble memory elements into a bubble memory element.
CONSTITUTION: A failed information corresponding to a failed minor loop every chip is written in memory locations P11WP51 of loops m1Wm5 and 4 sets of bubble memory element chips a, b... formed with minor loops m0Wm5 respectively. Further, the information is used as the mask information for failed minor loop and on and after the memory device P22 of each chip, failed information data of the chip and the failed information data for other chips succeeded to it are written in. At the normal use after the application of power, the readout failed information for the chips a, b... is compared. If a half or more is in agreement with each other, after clearing the information to the chip where disagreement failed information is stored according to the failed information of chip storing the failed information in agreement, the failed information can be restored, allowing to use the failed chips and to make ease of chip formation.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12762379A JPS5651081A (en) | 1979-10-02 | 1979-10-02 | Bubble memory device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12762379A JPS5651081A (en) | 1979-10-02 | 1979-10-02 | Bubble memory device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5651081A true JPS5651081A (en) | 1981-05-08 |
Family
ID=14964657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12762379A Pending JPS5651081A (en) | 1979-10-02 | 1979-10-02 | Bubble memory device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5651081A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5182531A (en) * | 1974-12-27 | 1976-07-20 | Nippon Electric Co | |
JPS53108735A (en) * | 1977-02-11 | 1978-09-21 | Texas Instruments Inc | Magnetic domain unit |
JPS5459038A (en) * | 1977-10-20 | 1979-05-12 | Nec Corp | Magnetic bubble memory device |
JPS54109728A (en) * | 1978-02-17 | 1979-08-28 | Hitachi Ltd | Memory device |
-
1979
- 1979-10-02 JP JP12762379A patent/JPS5651081A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5182531A (en) * | 1974-12-27 | 1976-07-20 | Nippon Electric Co | |
JPS53108735A (en) * | 1977-02-11 | 1978-09-21 | Texas Instruments Inc | Magnetic domain unit |
JPS5459038A (en) * | 1977-10-20 | 1979-05-12 | Nec Corp | Magnetic bubble memory device |
JPS54109728A (en) * | 1978-02-17 | 1979-08-28 | Hitachi Ltd | Memory device |
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