MPEG system which decompresses and then recompresses MPEG video data before storing said recompressed MPEG video data into memory
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United States of America Patent
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Dec 8, 1998
Grant Date -
N/A
app pub date -
Dec 27, 1995
filing date -
Dec 27, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An MPEG compatible decoder receives encoded, compressed data in the form of image representative pixel blocks. The decoder includes a frame memory (20) for storing reconstructed pixel blocks incident to the decoding process. The previously decompressed data is re-compressed (30) before being written to the memory. Stored decompressed data is decompressed for display (34, 26), or as needed for decoding functions such as motion compensation processing (32, 22). The compression performed before writing data to memory is block-based compression using compressed data from one of two different compression paths (FIG. 3, 314, 320) which compress a given pixel block simultaneously.
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