The coordinates detecting device comprises a plurality of sensors (LS1, LS2: photosensors, or the like,) located in prescribed positions in a coordinates detecting region for detecting coordinates set on an image display surface (4) which displays images by means of scanning lines; a counter which counts...http://www.google.se/patents/US6012980?utm_source=gb-gplus-sharePatent US6012980 - Coordinates detecting device, method for same and game device
