LOGIC UNIT REALIZING MAXIMUM AND MINIMUM OPERATIONS Russian patent published in 1995 - IPC

FIELD: optical logic gates. SUBSTANCE: logic unit has two photodetectors, electronic unit for comparing amplitudes made in form of electronic comparator, and light guide communication system, which has to be two light guide X-shaped couplers with control electrodes. Two outputs of the electrodes are integrated by common output of light guide commutation circuit. Information signals are introduced into light guide communication circuit, which gets out either larger signal (MAXIMUM operation), or lower signal (MINIMUM operation) to common output depending on connection of optical inputs of light guide commutation circuit, and polarity of connection of inverting and non-inverting inputs of electron comparator. Double-level electric output signal of the comparator switches both light guide X-shaped couplers simultaneously. EFFECT: improved precision; improved reliability of operation. 4 cl, 2 dwg