| 摘要 |
In a display device (301), in order to improve the visibility by changing a size for displaying character or patterns on a display screen in accordance with a distance from a user viewing the display screen, a text-containing image generating unit (305) generates a character image indicative of a character train to be presented to a user, a graphic image generating unit (306) generates a pattern image indicative of patterns to be presented to a user, a measuring unit (303) measures a distance between a display screen on which a displaying unit (302) displays the image and the user, a enlargement/contraction ratio acquiring unit (304) acquires a pattern enlarging and reducing rate that increases as the measured distance becomes large and a character enlarging and reducing rate that gently changes at a rate that is less than the pattern enlarging and reducing rate, and a control unit (307) gives the pattern image, the pattern enlarging and reducing rate, the character image and the character enlarging and reducing rate to a displaying unit (302) and makes it display them. |
