JPS5534303A - Head positioning servo system in magnetic disc device - Google Patents
Head positioning servo system in magnetic disc deviceInfo
- Publication number
- JPS5534303A JPS5534303A JP10547978A JP10547978A JPS5534303A JP S5534303 A JPS5534303 A JP S5534303A JP 10547978 A JP10547978 A JP 10547978A JP 10547978 A JP10547978 A JP 10547978A JP S5534303 A JPS5534303 A JP S5534303A
- Authority
- JP
- Japan
- Prior art keywords
- track
- servo information
- servo
- head
- magnetic
- 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
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Control Of Position Or Direction (AREA)
Abstract
PURPOSE: To position one of track groups in the servo region by the sector servo method, thereafter record the information following a desirable track, thereby shorten the access time of the head without deteriorating the magnetic recording density.
CONSTITUTION: A plurality of data tracks in the recording data regions 18 to 18h are divided into a plurality of track groups each of which comprises a plurality of tracks. In the positioning servo information regions 19a to 19h, a first servo information 22 for positioning the magnetic heads 10 to 17 and second servo information 23 for following the track of which the magnetic head is selected are recorded in one of the track groups. Then, the magnetic head is positioned on desired track groups based on the first servo information and thereafter follows a preferable track on the second servo information. In this manner, the access time of the head can be shortened without lowering the magnetic recording density.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10547978A JPS5534303A (en) | 1978-08-31 | 1978-08-31 | Head positioning servo system in magnetic disc device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10547978A JPS5534303A (en) | 1978-08-31 | 1978-08-31 | Head positioning servo system in magnetic disc device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5534303A true JPS5534303A (en) | 1980-03-10 |
Family
ID=14408715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10547978A Pending JPS5534303A (en) | 1978-08-31 | 1978-08-31 | Head positioning servo system in magnetic disc device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5534303A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4575775A (en) * | 1984-08-27 | 1986-03-11 | International Business Machines Corporation | Magnetic recording disk having a sector servo pattern for use with a multiple element head |
| JPS63122071A (en) * | 1986-11-11 | 1988-05-26 | Sony Corp | Discoid recording medium |
| JPS63173280A (en) * | 1987-01-13 | 1988-07-16 | Canon Electronics Inc | Servo-pattern for tracking |
| JPS63298782A (en) * | 1988-04-12 | 1988-12-06 | Canon Electronics Inc | Head position control method |
| US5798885A (en) * | 1994-06-06 | 1998-08-25 | Fujitsu Limited | Head positioning control for disk apparatus using peak detection, polarity detection and sector mark detection |
-
1978
- 1978-08-31 JP JP10547978A patent/JPS5534303A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4575775A (en) * | 1984-08-27 | 1986-03-11 | International Business Machines Corporation | Magnetic recording disk having a sector servo pattern for use with a multiple element head |
| JPS63122071A (en) * | 1986-11-11 | 1988-05-26 | Sony Corp | Discoid recording medium |
| JPS63173280A (en) * | 1987-01-13 | 1988-07-16 | Canon Electronics Inc | Servo-pattern for tracking |
| JP2628155B2 (en) * | 1987-01-13 | 1997-07-09 | キヤノン電子株式会社 | Recording medium with servo pattern for head tracking |
| JPS63298782A (en) * | 1988-04-12 | 1988-12-06 | Canon Electronics Inc | Head position control method |
| US5798885A (en) * | 1994-06-06 | 1998-08-25 | Fujitsu Limited | Head positioning control for disk apparatus using peak detection, polarity detection and sector mark detection |
| US5963398A (en) * | 1994-06-06 | 1999-10-05 | Fujitsu Limited | Disk apparatus with voice coil motor |
| US6016547A (en) * | 1994-06-06 | 2000-01-18 | Fujitsu Limited | Data processing apparatus with program allocating section for selectively allocating programs in first and second memory |
| US6137646A (en) * | 1994-06-06 | 2000-10-24 | Fujitsu Limited | Disk apparatus using coincidence detection to generate variable sector pulses |
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