Semiconductor arithmetic circuit

Abstract

The present invention has as an object thereof to provide a semiconductor arithmetic circuit which is capable of conducting edge accentuation processing, edge detection processing, and noise removal by means of averaging processing of an image, using extremely simple circuitry. A semiconductor arithmetic circuit is provided with an amplifier circuit in which an input terminal is connected to the gate electrode of at least one MOS type transistor, a first signal input terminal, which is connected with the input terminal via a first switching element, and a plurality of second signal input terminals, which are connected with the input terminal via a capacity element; wherein a mechanism is provided for opening the first switching element in a state in which a first signal voltage is applied to the input terminal and a predetermined second input signal voltage group is applied to the second signal input terminals, and for thereafter applying a predetermined third input signal voltage group to the second signal input terminals, and wherein the amplifier circuit comprises a source follower circuit or a voltage follower circuit.

Dependencies are inferred from the claim text.