JPS6486386A - Magnetic disk device - Google Patents
Magnetic disk deviceInfo
- Publication number
- JPS6486386A JPS6486386A JP24258187A JP24258187A JPS6486386A JP S6486386 A JPS6486386 A JP S6486386A JP 24258187 A JP24258187 A JP 24258187A JP 24258187 A JP24258187 A JP 24258187A JP S6486386 A JPS6486386 A JP S6486386A
- Authority
- JP
- Japan
- Prior art keywords
- track
- fdc
- instruction
- recording medium
- magnetic head
- 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
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
PURPOSE:To as much uniformize as possible the use frequency of individual tracks and to avoid the deterioration of the whole magnetic recording medium in durability by moving a magnetic head from the final track on completion of recording and reproducing to other optional track by operating a track protection mechanism provided to a recording and reproducing control part. CONSTITUTION:When an instruction is given to an FDC (floppy disk controller) 2 from a CPU 1, while the FDC 2 is outputting a random step pulse, the state of the FDC 2 is Busy as under an engaging condition. For this, the FDC 2 executes the instruction of the CPU 1 after moving optionally the magnetic head 5 by the random step pulse from the FDC 2. When the instruction is a SEEK instruction for positioning the magnetic head 5, the magnetic head 5 is moved by a difference between its optionally moved and stopped positioning track and a specified positioning track. Then, in case of a read/write instruction, the head is returned to a track, with which the recording or reproducing is previously completed, and then the write of a bit of information to the magnetic recording medium 6 or the read of a bit of information from the magnetic recording medium 6 is performed. By this method, the use frequency on the individual tracks of the magnetic recording medium 6 can be uniformized.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62242581A JP2624705B2 (en) | 1987-09-29 | 1987-09-29 | Magnetic disk drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62242581A JP2624705B2 (en) | 1987-09-29 | 1987-09-29 | Magnetic disk drive |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6486386A true JPS6486386A (en) | 1989-03-31 |
JP2624705B2 JP2624705B2 (en) | 1997-06-25 |
Family
ID=17091191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62242581A Expired - Lifetime JP2624705B2 (en) | 1987-09-29 | 1987-09-29 | Magnetic disk drive |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2624705B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60157781A (en) * | 1984-01-26 | 1985-08-19 | Toshiba Corp | Magnetic disc device |
JPS61237278A (en) * | 1985-04-12 | 1986-10-22 | Toshiba Corp | Magnetic disk device |
-
1987
- 1987-09-29 JP JP62242581A patent/JP2624705B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60157781A (en) * | 1984-01-26 | 1985-08-19 | Toshiba Corp | Magnetic disc device |
JPS61237278A (en) * | 1985-04-12 | 1986-10-22 | Toshiba Corp | Magnetic disk device |
Also Published As
Publication number | Publication date |
---|---|
JP2624705B2 (en) | 1997-06-25 |
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