Patent ID: 6862687
Filing Date: 2005-03-01
Classification: G06F

Abstract:
1. A checking device for checking an operator of an apparatus, the checking device comprising: image storage means for storing a check image for checking the operator; registered data storage means for storing location data of a registered checking point set to the check image, the location data representing relative coordinates of the checking point with respect to an origin of the check image; display means, having a display screen, for displaying the check image based on a preset location of display coordinates on the display screen; attaining means for attaining coordinates of a point designated by the operator on the display screen; detection means for detecting relative coordinates of the designated point on the check image displayed on the display screen based on the preset location of the display coordinates, from the coordinates attained by the attaining means; comparison means for comparing the relative coordinates of the designated point detected by the detection means with the relative coordinates of the registered checking point represented by the location data stored in association with the check image; check control means for determining that the operator is authorized to use the apparatus when a difference between the relative coordinates of the registered checking point and the relative coordinates of the designated point is within an allowable range; and update means for updating the display coordinates location, which determines where the check image is displayed, such that the location at which the check image is displayed is altered; wherein when no designation is made by the operator on the display screen on which the check image is displayed, the display location of the check image is periodically altered.