JPS55163668A - Flexible disk controller - Google Patents
Flexible disk controllerInfo
- Publication number
- JPS55163668A JPS55163668A JP7047479A JP7047479A JPS55163668A JP S55163668 A JPS55163668 A JP S55163668A JP 7047479 A JP7047479 A JP 7047479A JP 7047479 A JP7047479 A JP 7047479A JP S55163668 A JPS55163668 A JP S55163668A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- irregular
- delay
- head
- unload command
- 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 avoid the local wear of the magnetic coating, by making the contact point irregular to the disk of the magnetic head at the time of the head unloading action.
CONSTITUTION: When the head unload command is given to input terminal 11 after the end of the disk writing and reading, irregular constant generating circuit 13 is triggered to give the irregular constant to delay time control circuit 14. Based on this constant, circuit 14 gives the delay control to delay circuit 12. Circuit 12 gives the delay to head load signal UNL arrived at terminal 11 by the irregular time controlled at circuit 14, and then sends the signal to output terminal 15. Thus the unload command delayed by the irregular time is delivered with the supply of the unload command to irregular delay circuit 10. And this delayed unload command is applied to disk device 9 to carry out the unloading action. In such way, the local wear can be avoided for the magnetic coating.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7047479A JPS55163668A (en) | 1979-06-05 | 1979-06-05 | Flexible disk controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7047479A JPS55163668A (en) | 1979-06-05 | 1979-06-05 | Flexible disk controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55163668A true JPS55163668A (en) | 1980-12-19 |
Family
ID=13432552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7047479A Pending JPS55163668A (en) | 1979-06-05 | 1979-06-05 | Flexible disk controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55163668A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5050015A (en) * | 1988-10-22 | 1991-09-17 | Basf Aktiengesellschaft | Method and arrangement for reducing wear in a magnetic storage means |
-
1979
- 1979-06-05 JP JP7047479A patent/JPS55163668A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5050015A (en) * | 1988-10-22 | 1991-09-17 | Basf Aktiengesellschaft | Method and arrangement for reducing wear in a magnetic storage means |
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