Patent ID: 7839397

Claim:
A display driver, comprising: a first memory circuit for storing a line of pixels constituting an image; a second memory circuit for storing a line of pixels immediately previous to the line of pixels stored in the first memory circuit; an output terminal pair switch circuit which outputs voltages each corresponding to a value of a pixel stored in the first memory circuit to a plurality of output terminals respectively corresponding to the pixels; and an inter-terminal load determination circuit for determining, for every pair of first and second selected columns of pixels constituting the image, whether or not a short circuit is to be established between two of the plurality of output terminals which respectively correspond to the first and second columns based on values of at least three out of four pixels belonging to the first and second columns which are stored in the first and second memory circuits, wherein if the inter-terminal load determination circuit determines that a short circuit is to be established, the output terminal pair switch circuit temporarily establishes a short circuit between the two output terminals before the voltages corresponding to the values of the pixels belonging to the first and second columns which are stored in the first memory circuit are output to the two output terminals.