High-speed chien search logic

Details High-speed chien search logic High-speed chien search logic

1997-10-14

1999-10-26

Baker, Stephen M.

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

708492, 714784, H03M 1300

Patent

active

059745827

ABSTRACT:
The present invention includes a Chien search device that implements an error-locator polynomial divided by a factor. The device includes first and second devices to generate .alpha..sup.i and .alpha..sup.-i, respectively. The device also includes a root determination block coupled to receive .alpha..sup.i and .alpha..sup.-i to provide a signal responsive to .alpha..sup.-i. In particular, the signal represents that .alpha..sup.-i is a root of the error-locator polynomial. The root determination block includes multiple root determination circuits to find the roots of the error-locator polynomial for each data interleave.

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