| 摘要 |
<p>According to an embodiment of the present invention, a display device includes: a display unit on which a mark pattern is formed on a plurality of RGB pixels; a network interface unit which receives capture images of the screen of the display unit from an optical pen; and a control unit which acquires the mark pattern from the received images and displays a movement path of a contact point between the optical pen and the display unit based on the acquired mark pattern.</p> |
