- 专利标题： Method and apparatus for implementing reduced memory mode for high-definition television
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申请号： US10045194申请日： 2001-10-19
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公开(公告)号： US06983017B2公开(公告)日： 2006-01-03
- 发明人: Sherman (Xuemin) Chen , Jason Demas , Sandeep Bhatia
- 申请人： Sherman (Xuemin) Chen , Jason Demas , Sandeep Bhatia
- 申请人地址： US CA Irvine
- 专利权人： Broadcom Corporation
- 当前专利权人： Broadcom Corporation
- 当前专利权人地址： US CA Irvine
- 代理机构： Christie, Parker & Hale, LLP
- 主分类号： H04N7/12
- IPC分类号： H04N7/12 ; H04N11/02
摘要：
A method and apparatus are provided for implementing an enhanced reduced memory mode (RMM) of decoding HDTV MPEG-2 video stream. In one instance, the RMM mode is adaptively enabled with up/down conversion by using the picture-type information. In another instance, the RMM mode is provided by performing anchor-frame compression/decompression by using adaptive DPCM technique with picture-type information. The quantization (PCM) tables are generated using the Lloyd algorithm. Further, the predictor for each pixel is determined by a use of the Graham rule.
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