Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2006-03-06
2010-12-28
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240200, C375S240150, C375S240220, C375S240240, C711S114000
Reexamination Certificate
active
07860166
ABSTRACT:
Efficient search window storage schemes for motion estimation in video signal processing are disclosed. According to one embodiment, motion estimation is carried out as follows: allocating a ring buffer to store at least critical number of macro-blocks of luminance data from a reference frame on the motion estimator, establishing a rule to relate each storage unit of the ring buffer with each of the macro-blocks of the reference frame, initializing the ring buffer by reading in one less than the critical number of macro-blocks from the reference frame, when the macro-block is located next to a border of the reference frame, generating one or more added border macro-blocks and storing into the corresponding position of the ring buffer in accordance with the rule, constructing the search window from the macro-blocks stored in the ring buffer, and conducting motion estimation of the current macro-block of the current frame with the search window.
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Bai Feng
Wang Hao
Xia Yu
Yu Qing
Liu Shuwang
Singh Hirdepal
Vimicro Corporation
Wuxi Sino IP Agency, Ltd.
Wuxi Vimicro Corporation
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