JPS6421774A - Magnetic head positioning system for floppy disk device - Google Patents
Magnetic head positioning system for floppy disk deviceInfo
- Publication number
- JPS6421774A JPS6421774A JP17764487A JP17764487A JPS6421774A JP S6421774 A JPS6421774 A JP S6421774A JP 17764487 A JP17764487 A JP 17764487A JP 17764487 A JP17764487 A JP 17764487A JP S6421774 A JPS6421774 A JP S6421774A
- Authority
- JP
- Japan
- Prior art keywords
- track
- distortion
- information
- magnetic head
- servo
- 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 The Head To Find And Align With The Track (AREA)
Abstract
PURPOSE:To always make a magnetic head possible to follow a target data track even when the change of a temperature and a humidity occurs by reading the servo information of a track for servo, and considering the direction and the distortion quantity of the distortion of a track against a revolution angle from a standard point, to be distortion information. CONSTITUTION:The record of the data information of a floppy disk device or the servo information of the track for servo before reproducing operation, is read out, and the direction and the distortion quantity of the distortion of the track against the revolution angle from the standard point is stored as the distortion information. At the time of the positioning to an optional data track, by using in common both a position error signal obtained from the servo information of the respective sector of the said data track and the distortion information, and when the magnetic head can not read out the servo information of the specified sector, by determining the direction of the track following of the magnetic head and a following operation quantity for the said track based on the distortion information, a positioning and following operation is performed. Thus, even when a floppy disk deforms anisotropically by the change of a temperature humidity condition, the magnetic head can be made to exactly follow the target data track.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17764487A JPS6421774A (en) | 1987-07-15 | 1987-07-15 | Magnetic head positioning system for floppy disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17764487A JPS6421774A (en) | 1987-07-15 | 1987-07-15 | Magnetic head positioning system for floppy disk device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6421774A true JPS6421774A (en) | 1989-01-25 |
Family
ID=16034597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17764487A Pending JPS6421774A (en) | 1987-07-15 | 1987-07-15 | Magnetic head positioning system for floppy disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6421774A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59227435A (en) * | 1983-06-08 | 1984-12-20 | Mitsubishi Metal Corp | Mold for transfer molding |
-
1987
- 1987-07-15 JP JP17764487A patent/JPS6421774A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59227435A (en) * | 1983-06-08 | 1984-12-20 | Mitsubishi Metal Corp | Mold for transfer molding |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0227061A3 (en) | Disk drive apparatus providing increased track density | |
CA1303733C (en) | Tracking servo system for disc memory | |
EP0241868A3 (en) | Disk apparatus | |
DE3378800D1 (en) | Continuous-plus-embedded servo data position control system for magnetic disk device | |
CA2064511A1 (en) | Method and device for recording information volumes in a track of a record carrier, and a device for reading the record carrier thus obtained | |
EP0212099A3 (en) | Sector identification method for hard sectored hard files | |
JPH0449187B2 (en) | ||
ES447960A1 (en) | Positioning system for data storage apparatus and record medium for use therewith | |
EP0110509A3 (en) | Recording system for recording data on tape in a disk-recording format | |
EP0323154A3 (en) | Data transducer position control system for disk storage drive system | |
ES483497A1 (en) | Method of positioning reproducing elements and device for carrying out the method | |
JPS6421774A (en) | Magnetic head positioning system for floppy disk device | |
JP2506648B2 (en) | Magnetic head positioning device | |
JPS6212972A (en) | Servo pattern writer for disk device | |
JPS57212665A (en) | Head positioning system of magnetic device | |
JPS6423477A (en) | Head positioning control system for magnetic disk device | |
JPH0810880Y2 (en) | Formatting device | |
JPS57167108A (en) | Magnetic disc storage device | |
EP0210630A3 (en) | Method of formatting data storage disks | |
JPS5769354A (en) | Data base access system | |
JPS6419567A (en) | Magnetic disk device | |
JPS6464171A (en) | Data saving system in magnetic disk device | |
JPS6489015A (en) | Magnetic disk device | |
JPS6421771A (en) | Floppy disk device | |
JPS6449181A (en) | Magnetic disk device |