JPS5758283A - Magnetic bubble memory device - Google Patents
Magnetic bubble memory deviceInfo
- Publication number
- JPS5758283A JPS5758283A JP13168580A JP13168580A JPS5758283A JP S5758283 A JPS5758283 A JP S5758283A JP 13168580 A JP13168580 A JP 13168580A JP 13168580 A JP13168580 A JP 13168580A JP S5758283 A JPS5758283 A JP S5758283A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- time
- revolving magnetic
- coil current
- turned
- 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
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
- G11C19/085—Generating magnetic fields therefor, e.g. uniform magnetic field for magnetic domain stabilisation
Abstract
PURPOSE:To prevent an erroneous operation of a quasi defective loop and to make production of a device easier, by changing the variation of the coil current at the rise and breaking times during the preparation period for turning on or off the revolving magnetic field to the slow variation accompanied with no ringing. CONSTITUTION:In a stop preparation period (STOP-PP) at a time t1 which is just before the revolving magnetic field is stopped, the coil current IY is gradually reduced as shown by (b), and the revolving magnetic field is turned off at a time t2. Moreover, the coil current IY is gradually increased as shown by (d) in a start preparation period (START-PP) at a time t3, which is just before the revolving magnetic field is turned on, and the revolving magnetic field is turned on at a time t4. By preventing the ringing of the coil current in this way, an erroneous operation of a quasi defective loop at the time of starting and stopping is prevented, and production of the device become easier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13168580A JPS5758283A (en) | 1980-09-24 | 1980-09-24 | Magnetic bubble memory device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13168580A JPS5758283A (en) | 1980-09-24 | 1980-09-24 | Magnetic bubble memory device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5758283A true JPS5758283A (en) | 1982-04-07 |
Family
ID=15063818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13168580A Pending JPS5758283A (en) | 1980-09-24 | 1980-09-24 | Magnetic bubble memory device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5758283A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5057736A (en) * | 1973-09-25 | 1975-05-20 | ||
JPS5058948A (en) * | 1973-09-25 | 1975-05-22 | ||
JPS51146132A (en) * | 1975-06-11 | 1976-12-15 | Hitachi Ltd | Magnetic valve drive circuit control method |
-
1980
- 1980-09-24 JP JP13168580A patent/JPS5758283A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5057736A (en) * | 1973-09-25 | 1975-05-20 | ||
JPS5058948A (en) * | 1973-09-25 | 1975-05-22 | ||
JPS51146132A (en) * | 1975-06-11 | 1976-12-15 | Hitachi Ltd | Magnetic valve drive circuit control method |
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