Method and display apparatus for calculating coordinates of a light beam

摘要

A display apparatus is disclosed which includes: a camera which senses a light beam focused on a screen; a video processor which processes at least one of a first image including a reference position for calculating coordinates of the light beam and a second image corresponding to the coordinates of the light beam to be displayed on the screen; and a controller which calculates the coordinates of the light beam on the basis of the reference position changed in accordance with change in a display characteristic of the first image, and transmits the calculated coordinates to the video processor so that the second image corresponding to the calculated coordinates can be displayed on the screen.

主权项

1. A display apparatus comprising:
a camera which senses a light beam focused on a screen; a video processor which processes at least one of a first image including a reference position for calculating coordinates of the light beam and a second image corresponding to the coordinates of the light beam to be displayed on the screen; and a controller which calculates the coordinates of the light beam on the basis of the reference position changed in accordance with change in a display characteristic of the first image, and transmits the calculated coordinates to the video processor so that the second image corresponding to the calculated coordinates is displayed on the screen; wherein the controller controls the video processor to make a preset partial region of a first image flicker in response to determining a change in the reference position, determines the flickering partial region in the first image sensed by the camera, and resets the reference position on the basis of the coordinates of the determined partial region.