REFERENCE MOTION VECTOR AND REFERENCE ADDRESS CREATION CIRCUIT FOR MOTION COMPENSATION OF COLOR DIFFERENCE DATA

摘要

1. TECHNICAL FIELD OF THE INVENTION;The present invention relates to a circuit for generating a reference motion vector and a reference address for motion compensation of chrominance data using a motion vector received in a video signal compression encoding system.;2. Technical problem to be solved by the invention;It does not use RISC cores or MPUs, and it is a simple configuration circuit that generates reference motion vectors and reference addresses without degrading the performance of the system.;3. Summary of Solution to Invention;Means for dividing the vertical vector of the motion vector with respect to the color difference macroblock to be processed by the number of pixels in the vertical direction of the macroblock and outputting the quotient as the vertical block position value, and outputting the remainder as the vertical reference vector for the color difference macroblock to be currently processed Means for dividing the horizontal vector of the motion vector by the number of pixels in the vertical direction of the macroblock and outputting the rest as a horizontal reference vector, and multiplying the vertical block position value by the number of horizontal color difference macroblocks in one screen to start the reference block. Means for generating a vertical displacement of the chrominance macroblock to which the address belongs, adding a vertical displacement and a horizontal reference vector to generate a position value of the chrominance macroblock to which the reference block belongs, and adding a vertical reference vector and a horizontal reference vector Means for generating an address displacement to be started of the reference block, and a position of the macroblock to be processed at the position value. Means for adding the start address and then adding the address displacement and outputting the reference address as a start address of the reference block.;4. Important uses of the invention;Used for motion compensation according to the MPEG1 or MPEG2 standard.