Patent ID: 7081886
Filing Date: 2006-07-25
Classification: G06F

Abstract:
1. Apparatus comprising: a touch panel which monitors operation positions entered by a user on a display screen; a mark display part, coupled to said touch panel, which displays marks indicating operation target positions on the display screen such that the densities of the marks along a predetermined direction differ as a function of the position along the predetermined direction such that at least three mark densities different from each other are established; an operation position reader part, coupled to said touch panel, which reads operation positions entered on said touch panel; a relative position acquisition part which operatively couples said mark display part and said operation position reader part and which obtains a relative position of an operation position of an entered mark as read by said operation position reader part relative to the display position of the entered mark as displayed by said mark display part; and a calibration part, coupled to said operation position reader part, which calibrates the operation position in a new operation based on the relative positions.