Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
2007-05-15
2007-05-15
Chevalier, Robert (Department: 2621)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000
Reexamination Certificate
active
09915697
ABSTRACT:
The present invention provides efficient methods for performing motion compensation. The methods are particularly useful during motion compensation based decoding and recoding. In one aspect, motion compensation in accordance with the present invention improves on-chip memory usage. This is done by creating and storing a reference window in the on-chip memory. The reference window is constructed such that the reference frame portions required for motion compensation of a current frame are contained within the reference window and in the on-chip memory with a high frequency. In another aspect, selective methods are provided to recode compressed video data. The methods selectively apply re-quantization and motion compensation to the residual error between frames of the bitstream based on the amount of motion in the video data.
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Ding Jiangang
Liu Hain-Ching
Zhang Ji
Beyer & Weaver, LLP
Chevalier Robert
Cisco Technology Inc.
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