| 摘要 |
Disclosed is electronic chalk. The present invention comprises: a writing unit having an upper part of a side to which pressure is applied when a user grips the electronic chalk and writes; a pressure sensing unit which senses the pressure applied to the upper part of the side of the writing unit; and an image sensing unit which senses an image obtained from an upper surface of the writing unit when the pressure applied to the upper part of the side of the writing unit is sensed by the pressure sensing unit. According to the present invention, pressure sensing at the writing unit is easily performed even when the user uses the electronic chalk in a way of gripping general chalk. Furthermore, according to the present invention, the user uses the electronic chalk in a way of gripping the general chalk, thereby securing a distortion-free image even when the angle of the electronic chalk against a writing surface is low. |
