Analog MOS circuits for motion detection based on correlation neural networks

We propose simple analog MOS circuits producing one-dimensional optical flo ws aiming at the realization of compact motion-sensing circuits. In the pro posed circuit, the optical flow is computed by a number of local motion sen sors which are based on biological motion detectors. Mimicking the structur e of biological motion detectors made the circuit structure quite simple, c ompared with conventional velocity sensing circuits. Extensive simulation r esults by a simulation program of integrated circuit emphasis (SPICE) indic ated that the proposed circuits could compute local velocities of a moving light spot and showed direction selectivity for the moving spot, which impl ies that a high-resolution motion-sensing chip can be realized using standa rd analog very large-scale integration (VLSI) technology.