Phase comparator and reproduction signal processor

专利名称：Phase comparator and reproduction signal

processor using the same

发明人：Kouji Okamoto,Kouhei Nakata申请号：US12439966申请日：20080708公开号：US08188795B2公开日：20120529

专利附图：

摘要：In a synchronous reproduction signal processor, when a phase error betweenreproduction data and a clock is repeatedly detected such that a clock synchronized witha reproduction signal is generated based on the phase error, a filtering process unit ()

performs a filtering process which performs a weighed addition with respect to a phaseerror series prior to the current time from a phase error calculation unit () using, e.g., aFIR filter with a plurality of taps so as to generate a reference value under reducedinfluence of noise mixed in the phase error series by feedback correction. A cross

detection unit () detects the timing with which the sampled reproduction data crosses thereference value generated by the filtering process unit (). This allows effective use of thedynamic range of the feedbacked reference value without limiting it, and simultaneouslyachieves the enhancement of noise immunity.

申请人：Kouji Okamoto,Kouhei Nakata

地址：Osaka JP,Nara JP

国籍：JP,JP

代理机构：McDermott Will & Emery LLP

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