A REAL-TIME CENTER-OF-MASS TRACKER CIRCUIT IMPLEMENTED BY NEURON MOS TECHNOLOGY

A new-architecture integrated circuit has been developed as a key elem ent of a system that can real-time track the center of mass of an movi ng image on a two-dimensional (2-D) pixel array. The circuit has been implemented using a high-functionality transistor called neuron MOSFET (neuMOS or vMOS for short), hence having a very simple circuit config uration. A quasi-two-dimensional algorithm is assumed for system in th e circuit. A one-dimensional (1-D) array of neuron MOS circuits automa tically finds the center-of-mass location using the image intensity di stribution projected onto x or y axis. The unique feature of the circu it is that it accepts analog inputs without A/D conversion but produce s binary outputs, thus providing a very smooth interfacing between the real world and digital systems. Test circuits have been fabricated by a double-polysilicon CMOS process and their operation has been experi mentally demonstrated.