Image processing system performing image compression and expansion

摘要

The image processing system has a host computer coupled to a control unit that has a processor for overall control (11) that operates in a pipeline mode for the direct cosine conversion, quantisation and processing of data of variable length. The system also includes a processor (12) for variable length code conversion. Compressed pixel data is held in memory and is accessed for conversion purposes. The use of separate units improves the speed of executor.