Interleaved repeatable runout correction for data storage...

Details Interleaved repeatable runout correction for data storage... Interleaved repeatable runout correction for data storage...

2006-08-01

2006-08-01

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077060

Reexamination Certificate

active

07085094

ABSTRACT:
A reduction in computational load associated with correction of repeatable runout is provided. Rather than performing DFT for each analyzed frequency at each interrupt, at least some frequencies are not analyzed in the same interrupt period. DFTs for different frequencies may be staggered or interleaved. DFTs for different frequencies may be performed at different rates, preferably, using higher rates for higher frequencies.

REFERENCES:
patent: 5592346 (1997-01-01), Sullivan
patent: 6937424 (2005-08-01), Chang et al.
patent: 7009805 (2006-03-01), Wong et al.

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