Implementation of very low bitrate video encoder core

A very low bitrate video encoder core developed. A new mechanism is devised so as to seek horizontal and vertical edges simultaneously, which can achieve a high throughput for an edge detector. A new scheme is also introduced into the PE (Processing Element) array so as to be shared by an vector quantizer and a motion estimator. Owing to these sophisticated concepts, specific functional macrocells have been implemented for the encoder core in the total area of 55.3 mm/sup 2/ by a 0.6 /spl mu/m triple-metal CMOS technology.