Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
1999-05-13
2009-06-23
Dastouri, Mehrdad (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C348S413100, C348S416100
Reexamination Certificate
active
07551673
ABSTRACT:
A method and apparatus of encoding digital video according to the ISO/IEC MPEG standards (ISO/IEC 11172-2 MPEG-1 and ISO/IEC 13818-2 MPEG-2) using an adaptive motion estimator. A plurality of global motion vectors are derived from the motion vectors of a previous picture in a sequence, and the global motion vectors are analyzed to determine motion characteristics. The video encoding is arranged to enable switching among different types of local motion estimators based on the motion characteristics of the moving pictures sequence. This gives rise to a motion estimation algorithm that can adaptively change its search range, search area and block matching scheme to suit different types of moving sequences.
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Hui Yau Wai Lucas
Oh Hong Lye
Carlson David V.
Dastouri Mehrdad
Huber Jeremaiah C
Jorgenson Lisa K.
STMicroelectronics Asia Pacific (Pte) Ltd.
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