Abstract: A computer-based video compression system for processing natural information signals, such as video signals or audio signals, for the purpose of forming a compact data file of compressed signals which can be expanded to produce the original information signals is provided by a unique subsystem in a host computer which uses a high speed signal processor to compress video images and to expand video images. The unique compression process uses segmentation and predictive techniques in conjunction with a discrete sine transform, quantization and Huffman coding to provide optimal compression. Further the segmentation and predictive techniques in conjunction with the discrete sine transform diminish the magnitude of correlated errors generated by the compression process. The compression system of this invention is further enhanced by a special circuit which transfers data between the host computer and the compression subsystem at rates greater than were previously possible.

Abstract: A computer-based video compression system for processing natural information signals, such as video signals or audio signals, for the purpose of forming a compact data file of compressed signals which can be expanded to produce the original information signals is provided by a unique subsystem in a host computer which uses a high speed signal processor to compress video images and to expand video images. The unique compression process uses segmentation and predictive techniques in conjunction with a discrete sine transform, quantization and Huffman coding to provide optimal compression. Further the segmentation and predictive techniques in conjunction with the discrete sine transform diminish the magnitude of correlated errors generated by the compression process. The compression system of this invention is further enhanced by a special circuit which transfers data between the host computer and the compression subsystem at rates greater than were previously possible.