Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2007-10-29
2011-11-08
Kelley, Christopher S (Department: 2482)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240120, C375S240130, C375S240140
Reexamination Certificate
active
08054884
ABSTRACT:
Each of an image coding apparatus and an image decoding apparatus uses a motion compensated prediction using virtual samples so as to detect a motion vector for each of regions of each frame of an input signal. Accuracy of virtual samples is locally determined while the accuracy of virtual samples is associated with the size of each region which is a motion vector detection unit in which a motion vector is detected. Virtual samples having half-pixel accuracy are used for motion vector detection unit regions having a smaller size 8×8 MC, such as blocks of 8×4 size, blocks of 4×8 size, and blocks of 4×4 size, and virtual samples having ¼-pixel accuracy are used for motion vector detection unit regions that are equal to or larger than 8×8 MC in size.
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Asai Kohtaro
Sekiguchi Shun-ichi
Yamada Yoshihisa
Anyikire Chikaodili
Birch & Stewart Kolasch & Birch, LLP
Kelley Christopher S
Mitsubishi Denki & Kabushiki Kaisha
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