A compression method for moving picture signals that are interlace moving pictures, when prediction coding is used as the method of compressing image signals, divides an input frame image into input field images, divides a comparison frame image into comparison field images, detects a motion vector of...http://www.google.com.tw/patents/US5175618?utm_source=gb-gplus-share專利 US5175618 - Compression method for interlace moving image signals
