JPS5543681A - Floppy disk control system - Google Patents
Floppy disk control systemInfo
- Publication number
- JPS5543681A JPS5543681A JP11714678A JP11714678A JPS5543681A JP S5543681 A JPS5543681 A JP S5543681A JP 11714678 A JP11714678 A JP 11714678A JP 11714678 A JP11714678 A JP 11714678A JP S5543681 A JPS5543681 A JP S5543681A
- Authority
- JP
- Japan
- Prior art keywords
- track
- timer
- signal
- selector
- specified
- 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 increase the life time of the floppy disk and thus to enhance the reliability by positioning forcedly the head to the specified track designated previously when no read/write is given to the floppy disk and thus limiting the abrasion of the magnetic surface only to the specified track.
CONSTITUTION: The seek signal is delivered from decorder 23 of floppy control unit 18 and applied to timer 24 and selector 28. And selector 28 selects the signals of signal line 25 as soon as timer 24 starts clocking, and the selected signal is supplied to track address register 35. And in case no subsequent signal is supplied even for the while longer than the set time of timer 24 after the last seek signal came in, timer 24 generates output 27. At the same time, selector 28 selects track number data line 26 sent from fixed constant generator 25 and then registers the specified number given from generator 25 to register 35 to shift the head to the specified track. Owing to this shift, the heas abrasion is limited only to the specific track, thus increasing the life time of the disk.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11714678A JPS5543681A (en) | 1978-09-22 | 1978-09-22 | Floppy disk control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11714678A JPS5543681A (en) | 1978-09-22 | 1978-09-22 | Floppy disk control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5543681A true JPS5543681A (en) | 1980-03-27 |
JPS615225B2 JPS615225B2 (en) | 1986-02-17 |
Family
ID=14704592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11714678A Granted JPS5543681A (en) | 1978-09-22 | 1978-09-22 | Floppy disk control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5543681A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5991431A (en) * | 1982-11-18 | 1984-05-26 | Nippon Kogaku Kk <Nikon> | Mirror driving device of camera |
JPH01239609A (en) * | 1988-03-22 | 1989-09-25 | Okuma Mach Works Ltd | System for controlling position of shaft by motor |
US4987502A (en) * | 1986-10-06 | 1991-01-22 | Eastman Kodak Company | Anti-wear disk drive system |
US5010534A (en) * | 1984-12-29 | 1991-04-23 | Canon Kabushiki Kaisha | Optical information recording-reproducing apparatus |
US5050015A (en) * | 1988-10-22 | 1991-09-17 | Basf Aktiengesellschaft | Method and arrangement for reducing wear in a magnetic storage means |
-
1978
- 1978-09-22 JP JP11714678A patent/JPS5543681A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5991431A (en) * | 1982-11-18 | 1984-05-26 | Nippon Kogaku Kk <Nikon> | Mirror driving device of camera |
JPH0437623B2 (en) * | 1982-11-18 | 1992-06-19 | Nippon Kogaku Kk | |
US5010534A (en) * | 1984-12-29 | 1991-04-23 | Canon Kabushiki Kaisha | Optical information recording-reproducing apparatus |
US4987502A (en) * | 1986-10-06 | 1991-01-22 | Eastman Kodak Company | Anti-wear disk drive system |
JPH01239609A (en) * | 1988-03-22 | 1989-09-25 | Okuma Mach Works Ltd | System for controlling position of shaft by motor |
US5050015A (en) * | 1988-10-22 | 1991-09-17 | Basf Aktiengesellschaft | Method and arrangement for reducing wear in a magnetic storage means |
Also Published As
Publication number | Publication date |
---|---|
JPS615225B2 (en) | 1986-02-17 |
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