Position signal processor

Details Position signal processor Position signal processor

2009-01-12

2011-11-08

Nguyen, Hoa T (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

08054575

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 the lateral and longitudinal motion between the tape and the tape head, the servo system comprising a sampling circuit assembly to sample servo data from the tape media, wherein the sampling circuit assembly samples both positive readback waveforms and negative readback waveforms generated by servo code on the tape, a pulse time demodulator circuit module to generate timestamped, digital signals from signals generated by the sampling circuit assembly, and a position signal processor to calculate a position signal using the servo data from the pulse time demodulator circuit module.

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U.S. Appl. No. 12/352,468, Non-Final Rejection dated Apr. 14, 2011, pp. 1-6 and attachment.

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