发明名称 READ CHANNEL APPARATUS AND METHOD FOR AN OPTICAL STORAGE SYSTEM
摘要 A read channel apparatus is disclosed for reading data recorded on an optical storage system at a predetermined baud rate. The apparatus asynchronously samples an analog read signal generating from the optical storage system and subtracts an estimated DC offset from the asynchronous sample values to generate a sequence of asynchronous DC-removed sample values. The asynchronous DC-removed sample values are separately interpolated by two interpolators to generate a sequence of synchronous even-time sample values and a sequence of synchronous odd-time sample values respectively. The synchronous even-time and odd-time sample values are separately equalized by two equalizers in accordance with a target spectrum to generate a sequence of even-time equalized sample values and a sequence of odd-time equalized sample values respectively. A DC offset estimator generates the estimated DC offset from the even-time equalized sample values and the odd-time equalized sample values. The interpolators are under the control of a timing recovery controller for synchronizing the even-time and odd-time sample values to the baud rate. In the preferred embodiment, the recorded data are determined from the even-time equalized sample values and the odd-time equalized sample values.
申请公布号 US2007286270(A1) 申请公布日期 2007.12.13
申请号 US20070691518 申请日期 2007.03.27
申请人 MEDIATEK INC. 发明人 HUANG KE-CHIANG;WANG TZU-PAI
分类号 H03K5/00 主分类号 H03K5/00
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