Image analysis – Image compression or coding – Interframe coding
Reexamination Certificate
2006-02-28
2006-02-28
Chen, Wenpeng (Department: 2624)
Image analysis
Image compression or coding
Interframe coding
C382S239000, C375S240120, C375S240020
Reexamination Certificate
active
07006698
ABSTRACT:
An apparatus and method for performing two-pass real time video compression is provided. Tactical decisions such as encoding and quantification values are determined in software, whereas functional execution steps are performed in hardware. By appropriately apportioning the tasks between software and hardware, the benefits of each type of processing are exploited, while minimizing both hardware complexity and data transfer requirements. One key concept that allows the compression unit to operate in real time is that the architecture and pipe lining both allow for B frames to be executed out of order. By buffering B frames, two-pass motion estimation techniques can be performed to tailor bit usage to the requirements of the frame, and therefore provide a more appealing output image.
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Adiletta Matthew James
Chow King-Wai
Ho Samuel William
Rose Robert Clint
Sudharsanan Subramania Iyer
Chen Wenpeng
Hewlett--Packard Development Company, L.P.
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