Chien search device, storage device, and chien search method
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United States of America Patent
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Aug 9, 2016
Grant Date -
Oct 22, 2015
app pub date -
Jul 9, 2014
filing date -
Apr 18, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
According to one embodiment, a chien search device includes n operation units configured to perform exclusive-OR operations, for each of the coefficients. Further, the chien search device includes first register configured to hold operation results of a highest order operation unit, for each of the coefficients. Furthermore, the chien search device includes exclusive-OR operation unit configured to perform exclusive-OR operations of the results of the first exclusive-OR operations of the highest order operation unit, for each of the coefficients. Moreover, the chien search device includes second register configured to hold operation results of the exclusive-OR operation unit, for each of the coefficients. The respective operation units reduce the number of stages of exclusive-OR operations by using the second register values.
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