A new DSP architecture suited for image analysis

A DSP architecture suited for processing in the field of image analysis, which is placed between image preprocessing and image understanding, is described. The DSP, consisting of a flexible EU (execution unit) and hardwired AGUs (address generation units) with several well-considered addressing modes, achieved flexible capability for various algorithms in the image analysis field without complex sequence control. A programmable PLL which can generate the internal clock signal with high frequency has been implemented, and high performance has been achieved in cases of intensive calculations