Patent ID: 6317136
Filing Date: 2001-11-13
Classification: G06T,H04N

Abstract:
A motion vector detecting device comprising:a global memory for storing pixels of a current picture and a reference picture;a local memory;a first buffer for buffering pixels of a subsampled macro block and a subsampled first search area;a motion vector detector for receiving and detecting a first motion vector from the pixels of the subsampled macro block and the subsampled first search area from the first buffer;a second buffer for latching the first motion vector received from the motion vector detector; anda main processor for reading the pixels of a macro block in the current picture and the pixels of the first search area in the reference picture from the global memory, storing the read pixels in the local memory, subsampling the pixels stored in the local memory, storing the subsampled pixels in the first buffer, reading the first motion vector from the second buffer, and detecting a second motion vector of the macro block from a second search area including a pixel indicated by the first motion vector and blocks having reference points at pixels around a pixel in the reference picture.