Continuous-plus-embedded servo data position control system...

Details Continuous-plus-embedded servo data position control system... Continuous-plus-embedded servo data position control system...

G - Physics

11

B

352/21.3

G11B 5/596 (2006.01) G11B 5/55 (2006.01)

Patent

CA 1221454

Abstract of the Disclosure A magnetic disk drive of the type in which a disk assembly has a dedicated servo surface containing circular tracks of dedicated servo signals and data surfaces containing circular data tracks divided into sectors each of which includes a data field and a servo field containing embedded servo signals, a dedicated servo signal detector for detecting servo signals on said dedicated surface, an embedded signal detector for detecting embedded servo signals on a data surface and a head positioning system for positioning a read/write head over a selected data track. The entire output of the embedded signal detector is combined with the high- frequency components of the output of the dedicated signal detector to produce a composite track error signal and the head positioning system responds to the composite track error signal to maintain the read/write head over the selected data track.

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