Abstract: A high-strength and high-toughness Al—Cu series cast aluminum alloy, a preparation method therefor, and the use of same in wheel hub manufacturing. Chemical components of the high-strength and high-toughness Al—Cu series cast aluminum alloy comprise the following elements in percentage by mass: 4.6-5.3% of Cu, 0.45-0.55% of Mn, 0.42-0.55% of Mg, 0.15-0.25% of Ti, 0.05-0.15% of Zr, and 0.003-0.011% of B; the chemical components of the high-strength and high-toughness Al—Cu series cast aluminum alloy further comprising Fe and Si in percentage by mass, 0.03<Fe?0.2%, the mass ratio of Fe:Si being (2-6):1, and the balance being Al and inevitable impurities. The high-strength and high-toughness Al—Cu series cast aluminum alloy has low cost, satisfies the market requirements on aluminum alloy parts such as vehicle wheel hubs, and therefore is of important significance in accelerating weight reduction of vehicles and achieving the objects of energy conservation and emission reduction.

Abstract: A video signal processor includes a motion vector estimation system having a first operating mode for performing frame-structure processing and a second operating mode for field-structure processing. The system includes N motion estimator units, each of the units receiving two respective time separated data blocks, wherein N units are operating during the first operating mode, wherein M of the N units are operating during the second operating mode and wherein (N-M) units provide motion estimating processing outside of an area of an image represented by the data blocks. According to one aspect of the present invention, N is an integer greater than 2 while M is an integer less than N.