Wipe pattern generation apparatus

摘要

A wipe pattern generation apparatus that can generate wipe patterns of various shapes at high speed and moreover can be miniaturized. is provided. A wipe pattern generation apparatus 100 includes a sin &thetas; generation section 101 for calculating sin &thetas; from input angle information &thetas;; a multiplier 103 for multiplying the calculation result of sin &thetas; by a first coefficient; a cos &thetas; generation section 102 for calculating cos &thetas; from the angle information &thetas;; a multiplier 104 for multiplying the calculation result of cos &thetas; by a second coefficient; a multiplier 106 for multiplying the result of adding output of the multiplier 103 and output of the multiplier 104 by a third coefficient and outputting as the reciprocal of the distance from the polar coordinate center to an arbitrary line on a display screen; a multiplier 107 for multiplying output of the multiplier 106 by distance information r; and a comparator 108 for making a comparison between output of the multiplier 107 and a fourth coefficient, and generates wipe pattern output data 110 from the angle information &thetas; and the distance information r.