Sampling clock generator for BCA data decoding

Details Sampling clock generator for BCA data decoding Sampling clock generator for BCA data decoding

2006-02-28

2006-02-28

Miller, Brian E. (Department: 2652)

Dynamic information storage or retrieval

Control structure on storage medium sensed by other than...

C369S053340, C369S053160

Reexamination Certificate

active

07006415

ABSTRACT:
A sampling clock generator for BCA data decoding providing a sampling clock, which is proportional to the actual rotation speed of a disk. The sampling clock generator includes a frequency counter, a divider and a frequency divider. The frequency counter counts the number of pulses of a reference clock for each period of a rotation speed indicating signal of a spindle motor and generates a counting value. The divider divides the counting value by a predefined value and generates a divided value. The frequency divider is employed to generate the sampling clock. The frequency divider receives the reference clock and divides the frequency of the reference clock by the divided value to generate the sampling clock. The frequency divider also adjusts the phase of the sampling clock according to the BCA reproducing signal.

REFERENCES:
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patent: 2002/0057638 (2002-05-01), Chou et al.
patent: 2002/0060968 (2002-05-01), Senshu

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