Servo synchronization based on a servo synch mark that...

Details Servo synchronization based on a servo synch mark that... Servo synchronization based on a servo synch mark that...

2005-08-23

2005-08-23

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

C360S048000

Reexamination Certificate

active

06934104

ABSTRACT:
Disclosed is a rotatable media storage device (RMSD) that performs servo synchronization based on a servo synch mark (SSM) that conflicts with self-clocking encoding algorithms. The RMSD includes a disk having a plurality of tracks wherein each track comprises a plurality of data regions interspersed between servo wedges. The servo wedges comprise a servo synch mark field including a servo synch mark (SSM) and a track identification field including a track identifier (TKID). The TKID is encoded in accordance with a self-clocking encoding algorithm whereas the SSM is encoded in accordance with a second algorithm that conflicts with the self-clocking encoding algorithm of the TKID. Thus, the SSM is prevented from being decoded as a portion of the TKID.

REFERENCES:
patent: 5162791 (1992-11-01), Heegard
patent: 6178056 (2001-01-01), Cloke et al.
patent: 6671115 (2003-12-01), Haraguchi et al.
patent: 0 553 409 (1993-08-01), None
patent: 553409 (1993-08-01), None

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