A high speed, multi-function and expandable image processing LSI (image signal processor) for realizing a gray level image processing technique is disclosed. The architecture of the image signal processor can process a gray level image having 256 tones at a video rate (256.times.256 image, 6 MHz, non-interlace),...http://www.google.ca/patents/US4665556?utm_source=gb-gplus-sharePatent US4665556 - Image signal processor
