JPS56163561A - System and device for positioning of magnetic disk head - Google Patents
System and device for positioning of magnetic disk headInfo
- Publication number
- JPS56163561A JPS56163561A JP6511480A JP6511480A JPS56163561A JP S56163561 A JPS56163561 A JP S56163561A JP 6511480 A JP6511480 A JP 6511480A JP 6511480 A JP6511480 A JP 6511480A JP S56163561 A JPS56163561 A JP S56163561A
- Authority
- JP
- Japan
- Prior art keywords
- head
- track
- magnetic disk
- types
- positioning
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
PURPOSE:To realize an efficient positioning for a magnetic disk head, by varying the record density of information alternately at every track in three types or more and then detecting the shift of the disk head from the frequency component of a read signal to feed back to the positioning system. CONSTITUTION:The record density of three types or more is set to the rotating angle of the digital information which is recorded concentrically on a magnetic disk 1. This action is repeated alternately at every track T to carry out a writing of information. Then a minute shift (a) or (b) of a head 51 to the track T is detected from the frequency component of a read signal of the head, and this signal is fed- back to the head positioning system. Thus the head 51 is positioned at the correct position on the track T. For instance, a writing is given on the disk 1 that turns with a certain speed of angle by varying the record density with every track and alternately in three types I-III and by changing the recording modulation frequency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6511480A JPS56163561A (en) | 1980-05-16 | 1980-05-16 | System and device for positioning of magnetic disk head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6511480A JPS56163561A (en) | 1980-05-16 | 1980-05-16 | System and device for positioning of magnetic disk head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56163561A true JPS56163561A (en) | 1981-12-16 |
Family
ID=13277535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6511480A Pending JPS56163561A (en) | 1980-05-16 | 1980-05-16 | System and device for positioning of magnetic disk head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56163561A (en) |
-
1980
- 1980-05-16 JP JP6511480A patent/JPS56163561A/en active Pending
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