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US 7,924,520 B2Granted
Method and apparatus for determining position of a storage medium
AssigneeHewlett-Packard Development Company, L.P.
InventorDonald J. Fasen
Life of this patent
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Abstract
A system and method for determining the value of a longitudinal position (“LPOS”) bit of a storage medium. A system comprises a selector that selects a value for a longitudinal position (“LPOS”) bit from a plurality of possible values derived from LPOS information read from a storage medium. A quality determiner that determines a quality value for each of a plurality of LPOS values derived from the LPOS information. The selection of the value for the LPOS bit is based, at least in part, on the quality values.
Claims20
A system, comprising:
- a selector that selects a value for a position bit from a plurality of possible values for the position bit derived from position information read from a storage medium;
- and
- a quality determiner that determines a quality value for each of a plurality of position values derived from the position information;
- wherein selection of the value for the position bit is based, at least in part, on the quality values.
1 more element
A method, comprising
- determining a quality value for each of a plurality of redundant position values derived from a servo track of a storage medium;
- and
- selecting a value for a position bit from a plurality of redundant position bit values derived from the servo track, the selecting based, at least in part, on the position value quality values.
A tape drive, comprising:
- means for determining a quality value for each of a plurality of redundant position values derived from a servo track of a tape;
- and
- means for selecting a value for a position bit from a plurality of redundant position bit values derived from the servo track, the selecting based, at least in part, on the quality value determined for each of the redundant position values.
Dependencies are inferred from the claim text.