LSI Architecture and implementation of MPEG video codec
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United States of America Patent
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Jun 24, 2003
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app pub date -
Jul 17, 1998
filing date -
Jul 17, 1998
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Abstract
Flexible VLSI architecture implements of MPEG video processing unit (VPU) for encoding and decoding. In encoding mode, VPU performs compression operations on digitized video input per MPEG standard; and in decoding mode, VPU performs decompression operations on video bitstream per MPEG standard. VPU modules include: Discrete Cosine Transformation (DCT), Inverse Discrete Cosine Transformation (IDCT), Quantization (QNT), Inverse Quantization (IQ), Variable Length Encoding (VLC), Variable Length Decoding (VLD) and Motion Compensation (MC). VPU functions in half duplex, and hardware modules are shared between encode/decode modes. Architecture provides low-cost, flexible and efficient solution to implement real-time MPEG codec. Specific system configuration is not required, and general interface supports various operating conditions.
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