JPS5629872A - Disc device having tracking correction circuit - Google Patents
Disc device having tracking correction circuitInfo
- Publication number
- JPS5629872A JPS5629872A JP10620179A JP10620179A JPS5629872A JP S5629872 A JPS5629872 A JP S5629872A JP 10620179 A JP10620179 A JP 10620179A JP 10620179 A JP10620179 A JP 10620179A JP S5629872 A JPS5629872 A JP S5629872A
- Authority
- JP
- Japan
- Prior art keywords
- track
- data
- head
- servo
- data plane
- 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
Abstract
PURPOSE: To enable to save the data head alignment adjusting work, by detecting the shift amount from the reference track written in each data plane and correcting the data head to accurate track position.
CONSTITUTION: The servo band is placed by one on each data plane where the reference track is written in. When the servo head reads the first servo track, each data head reads in the reference track of the specified data plane sequentially, the position information of the servo head and the reference track position information are compared, and the off-track amount is calculated and stored at the register 2. When the data plane in use is selected with the instruction from the main body, the off-track amount VR and the position signal POS of conventional circuit are input to the error amplifier 3, and the offset correction signal being the output is input to the power amplifier 4, the output drives the voice coil motor and the data head is correctly positioned to the specified data track.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10620179A JPS5629872A (en) | 1979-08-21 | 1979-08-21 | Disc device having tracking correction circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10620179A JPS5629872A (en) | 1979-08-21 | 1979-08-21 | Disc device having tracking correction circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5629872A true JPS5629872A (en) | 1981-03-25 |
Family
ID=14427543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10620179A Pending JPS5629872A (en) | 1979-08-21 | 1979-08-21 | Disc device having tracking correction circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5629872A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4833551A (en) * | 1987-02-24 | 1989-05-23 | Konishiroku Photo Industries Co., Ltd. | Dual head servo system and method for a magnetic disk |
US5053897A (en) * | 1988-12-23 | 1991-10-01 | Mitsubishi Denki K.K. | Head position controlling circuit for disk unit including servo head selection |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49117007A (en) * | 1973-03-09 | 1974-11-08 | ||
JPS5491307A (en) * | 1977-12-28 | 1979-07-19 | Fujitsu Ltd | Head positioning device for magnetic disc apparatus |
JPS54119907A (en) * | 1978-03-10 | 1979-09-18 | Hokushin Electric Works | Magnetic disk memory |
JPS54158207A (en) * | 1978-06-05 | 1979-12-13 | Nec Corp | Head offset controller of movable head type |
JPS54158206A (en) * | 1978-06-05 | 1979-12-13 | Nec Corp | Servo-information recorder of magnetic disc memory |
-
1979
- 1979-08-21 JP JP10620179A patent/JPS5629872A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49117007A (en) * | 1973-03-09 | 1974-11-08 | ||
JPS5491307A (en) * | 1977-12-28 | 1979-07-19 | Fujitsu Ltd | Head positioning device for magnetic disc apparatus |
JPS54119907A (en) * | 1978-03-10 | 1979-09-18 | Hokushin Electric Works | Magnetic disk memory |
JPS54158207A (en) * | 1978-06-05 | 1979-12-13 | Nec Corp | Head offset controller of movable head type |
JPS54158206A (en) * | 1978-06-05 | 1979-12-13 | Nec Corp | Servo-information recorder of magnetic disc memory |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4833551A (en) * | 1987-02-24 | 1989-05-23 | Konishiroku Photo Industries Co., Ltd. | Dual head servo system and method for a magnetic disk |
US5053897A (en) * | 1988-12-23 | 1991-10-01 | Mitsubishi Denki K.K. | Head position controlling circuit for disk unit including servo head selection |
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