MPEG video decompression processor
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United States of America Patent
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Jan 28, 1997
Issued Date -
N/A
app pub date -
Oct 24, 1994
filing date -
Apr 13, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
A method and a structure are provided to decode intra-frame and interframe coded compressed video data. In one embodiment of the present invention, a decompression structure having a processor is provided with a global bus over which a decoder coprocessor, an inverse discrete cosine transform coprocessor and a motion compensation coprocessor communicate. The decompression structure in accordance with the present invention communicates with a host computer over a host bus and with an external dynamic random access memory over a memory bus. The processor in the decompression structure of the present invention provides overall control to the decoder, IDCT and motion compensation coprocessors by reading and writing into a plurality of data and control registers, each register associated with one of the decoder, the IDCT and the motion compensation coprocessors.
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