Patent ID: 7778329
Filing Date: 2010-08-17
Classification: H04N

Abstract:
1. A mode decision method for motion vector fine search, which determines one or more modes applied to perform a motion vector fine search on each macroblock in a frame, each macroblock in the frame first performing a coarse search to thus obtain a coarse frame forward cost, a coarse frame backward cost, a coarse field forward cost, a coarse field backward cost, each macroblock in the frame having a pre-determined clock number, the method comprising: (A) inputting a clock number and the pre-determined clock number before a fine search is performed on a macroblock; (B) subtracting the clock number from the pre-determined clock number to thus obtain a clock difference for comparing with a threshold, thereby obtaining an operation level; and (C) selecting one or more modes based on the operation level, and accordingly performing the fine search on the macroblock.