| 摘要 |
<p>The present invention provides a device that will not force, if the situation permits, the user to abort his or her work entirely when the modes of operation are changed from cleaning into non-cleaning, or vice versa. An information display device includes: a display section; a touchscreen panel, which forms an integral part of the display section and which has an input area that is associated with the display area of the display section; an area locating section for determining, in response to a user's action on the input area, what partial area of the input area has been operated on as a result of the user's action, thereby generating a signal specifying that partial area; and a control section for instructing the display section to display a non-opaque pattern with some degree of transparency. In a cleaning mode for cleaning the input area, the display section displays the pattern on the display area, and the control section increases the degree of transparency of that pattern on the partial area in accordance with the signal specifying the partial area.</p> |
