A structure and a method for providing a video signal encoder under the MPEG-1 and MPEG-2 standards are provided. In one embodiment, a novel scheme for mapping an image to an external memory allows fetching of video data by either field of frame. In addition, an automatic reload of a DMA channel memory...http://www.google.com/patents/US5596376?utm_source=gb-gplus-sharePatent US5596376 - Structure and method for a multistandard video encoder including an addressing scheme supporting two banks of memory