Display apparatus with optical input function
View Patent ↗In making a contact determination between an object and a display screen, a display apparatus of the present invention is capable of adjusting a region on which to make a contact determination in response to the displayed image in a liquid crystal panel, so that the influence by the displayed image can be suppressed. Moreover, for simplifying the contact determination process, the display apparatus sets solid a region in the picked-up image that is not a target of the contact determination, with a predetermined gradation value.
1. A display apparatus comprising:
a display unit configured to display an image having a part that an object contacts;
a plurality of optical input units disposed in the display unit and configured to output electric signals in a magnitude corresponding to an amount of received light;
a convert unit configured to receive the signals from each optical input unit and convert the signals into gradation values to obtain a picked-up image;
a designation unit configured to designate an area in the picked-up image corresponding to the part;
a process unit configured to find a coordinate of the object in accordance with data within the designated area of the picked-up image; and
a replacement unit configured to replace a region other than the designated area in the picked-up image, with a predetermined gradation value that is a median value of the gradation in the picked-up image.