Patent attributes
A controller controls an electronic appliance. The electronic appliance has a display. The controller employs a video camera to photograph an image of a user and converts the image into a mirror image. The controller generates an operational image including operation buttons, overlays the operational image on the user's image, and displays the images on the display. In the displayed images, the user moves his or her hand onto one of the displayed operation buttons and bends the fingers of the hand to select the operation button. This selecting operation is detected by a detector of the controller, and information about the selected operation button is supplied to a processing unit, which outputs control signals corresponding to the selected operation button.