Pulse or digital communications – Pulse code modulation – Differential
Reexamination Certificate
2006-08-08
2006-08-08
Diep, Nhon (Department: 2613)
Pulse or digital communications
Pulse code modulation
Differential
C375S240260
Reexamination Certificate
active
07088780
ABSTRACT:
A method compensates for drift in macroblocks of a partially decoded input bitstream. The macroblocks include intra-mode and inter-mode macroblocks, and each macroblock includes DCT coefficients, and at least one motion vector. An estimate of drift is measured in the partially decoded input bitstream. The estimated drift is translated into an intra refresh rate. The modes of inter-mode macroblock are mapped to intra-mode macroblock according to the refresh rate. The DCT coefficients and the motion vector for each changed macroblock are modified in accordance with the mapping for each changed macroblock.
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Liu Bede
Poon Tommy C.
Sun Huifang
Vetro Anthony
Yin Peng
Brinkman Dirk
Curtin Andrew
Diep Nhon
Mitsubishi Electric Research Labs Inc.
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