Method of determining and applying adaptive track zero...

Details Method of determining and applying adaptive track zero... Method of determining and applying adaptive track zero...

2007-11-27

2007-11-27

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077020, C360S078040

Reexamination Certificate

active

10947437

ABSTRACT:
A method of determining, and an apparatus to determine, a track zero position of a disc in a disc drive, the method including seeking, sequentially, in units of predetermined numbers of tracks, outwardly from a designed track zero position to a predetermined critical track position of the disc; determining whether track following is performed normally during the seeking; and determining an actual track zero position by shifting the designed track zero position inward by a predetermined number of tracks in response to the track following not performing normally, and determining the actual track zero position to be the designed track position in response to the track following performing normally.

REFERENCES:
patent: 2005/0041321 (2005-02-01), Settje et al.
patent: 2005/0152253 (2005-07-01), Park et al.
patent: 07-249276 (1995-09-01), None
patent: 09-128915 (1997-05-01), None
patent: 09-330571 (1997-12-01), None
patent: 1998-702968 (1998-09-01), None

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