Self-synchronizing servo control system and servo data code...

Details Self-synchronizing servo control system and servo data code... Self-synchronizing servo control system and servo data code...

G - Physics

11

B

352/21

G11B 21/08 (2006.01) G11B 5/596 (2006.01) G11B 27/32 (2006.01)

Patent

CA 2030183

A self-synchronizing servo control system and its associated servo data code for use in a high-density disk memory is disclosed. The servo data is formatted into a sync/index zone and a data zone. Sync and index di-bits are written only in the sync/index zone, while only servo data position di-bits are written in the data zone. Elimination of the sync and code di-bits used in prior art methods removes all requirements for radial phase coherence during the writing process, and increases the servo sample frequency. The new servo data code also reduces the intersymbol interference seen by adjacent pulses. The associated configuration of the servo control system is also disclosed.

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