In this paper we present an analog winner-take-all MOS VLSI (metal-oxi
de semiconductor/very large scale integration) optoelectronic network,
By varying either the input current or circuit parameters, the circui
t can evidence several different behaviors Such as contrast enhancemen
t, strict winner-take-all, or winner-take-all with hysteresis. Simulat
ion and experimental results from the prototype circuit are also discu
ssed.