Invention Grant
US07342967B2 System and method for enhancing performance of personal video recording (PVR) functions on hits digital video streams 有权
用于提高个人视频录像(PVR)功能的命中数字视频流的系统和方法

System and method for enhancing performance of personal video recording (PVR) functions on hits digital video streams
Abstract:
A system, method, and apparatus for reducing the video decoder processing requirements for rewinding a HITS stream are presented herein. During rewind of a HITS stream, the video decoder builds a clean reference picture. The clean reference picture is built by decoding each of the P-pictures in the EP-EP segment. However, because the P-pictures are not displayed, the decoder does not decode the portion of the P-picture below the last intracoded slice. The decoder can build the clean reference picture without decoding the portions of the P-pictures below the last intracoded slice because the subsequent pictures do not use the said portions for prediction.
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