Tape drive position control
AssigneeHewlett-Packard Development Company, L.P.
InventorDonald Fasen
Life of this patent
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Abstract
In one embodiment a tape drive system comprises a reel adapted to engage a tape cartridge, the tape cartridge comprising a tape media having a servo code written along a length of the tape media, a tape head comprising at least one servo element to detect the servo code, a drive assembly to induce relative motion between the tape and the tape drive, a servo system to control a rate of relative motion between the tape and the tape drive, wherein the servo system comprises a sampling module to sample servo code from the tape media and the sampling module implements a dithered sampling routine centered around a design sampling frequency.
Claims20
A tape drive system, comprising:
- a reel adapted to engage a tape cartridge, the tape cartridge comprising a tape media having a servo code written along a length of the tape media;
- a tape head comprising at least one servo element to detect the servo code;
- a drive assembly to induce relative motion between the tape and the tape head;
- a servo system to control a rate of relative motion between the tape and the tape head, wherein
- the servo system comprises a sampling module to sample servo code from the tape media;
- and
- the sampling module implements a dithered sampling routine centered around a design sampling frequency.
A method to monitor position information in a tape drive, comprising:
- processing a plurality of control samples from servo code encoded on a tape media at a first sampling frequency;
- and
- processing a plurality of control samples from servo code encoded on the tape media at a second sampling frequency.
A computer program product comprising logic instructions stored on a computer readable medium which, when executed by a processor, configure the processor to:
- process a plurality of control samples from servo code encoded on a tape media at a first sampling frequency;
- and
- process a plurality of control samples from servo code encoded on the tape media at a second sampling frequency.
Dependencies are inferred from the claim text.