Motion Detection with Bio-Inspired Analog MOS Circuits

We propose simple analog MOS circuits with a correlation model based on the insect motion detectors aiming at the realization of fundamental motion-sensing systems. The model makes the circuit structure quite simple, compared with conventional velocity sensing circuits. SPICE simulation results indicate that the proposed circuits compute local velocities of the moving light spot and have direction selectivity for the spot, which implies that a high-resolution motion-sensing chip can be realized by current analog VLSI technology.