Transducer positioning system

Details Transducer positioning system Transducer positioning system

G - Physics

11

B

352/21.32

G11B 21/10 (2006.01) G11B 5/55 (2006.01) G11B 5/82 (2006.01)

Patent

CA 1075807

TRANSDUCER POSITIONING SYSTEM Abstract of the Disclosure Method and apparatus for providing coarse and fine radial positioning of a transducer relative to the concentric tracks of a rotatable magnetic disc having work data and servo data interspersed in alternate sectors on the disc. The servo data sectors comprise repeating groups of servo tracks which are used in providing coarse and fine radial positioning of the transducer relative to work data tracks provided in the work data sectors. In a preferred embodiment, each servo track is provided with specially encoded servo data comprising a common reference transition followed by spaced fine servo positioning data and coarse servo positioning data which are individually chosen in a manner so as to permit each to reliably perform its respective fine or coarse positioning function without significantly increasing the storage area required for recording the servo data. -1-

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