Method and apparatus to calculate field motion estimations in frame pictures

摘要

Field motion in digital video motion pictures are calculated by partitioning the field data in such a way to allow the four required searches to be done simultaneously in two searches using duplicate search circuitry. This reduces processing time by fifty percent. This takes advantage of the fact that two of the four searches use the same current macroblock parity fl data and that the other two searches use the same current macroblock parity f2 data. The reference data can be stored in two separate arrays, or in one array with two read ports. According to an alternative, four sets of search circuitry can be utilized. By this expedient the four searches can be completed in parallel.