Being day shadow decision manner for electromotive blind it decides whether or not the day when

摘要

PROBLEM TO BE SOLVED: To easily determine whether or not a setting position of a motor-driven blind exists in a sun shade, for sun shade control for controlling opening of the motor-driven blind corresponding to the sun shade, when the motor-driven blind sets in one's own building exists in the sun shade projected by a projection object.;SOLUTION: The setting position of the motor-driven blind is determined from information of expressing the positional relationship between the motor-driven blind and the one's own building, by reading out information of expressing a plurality of line segments forming the sun shade projected on a wall surface of the one's own building. It is determined that its setting position exists in the sun shade, when the sum total is an odd number, by determining the sum total of intersections of a line segment of connecting the setting position of the motor-driven blind a fixed point and whole line segments forming the sun shade, and it is determined that its setting position exists outside the sun shade, when the sum total is an even number.;COPYRIGHT: (C)2008,JPO&INPIT