Automatic screen brightness adjusting device according to the change of screen size of television receiver

摘要

In a television receiver called Widevision currently having a 16: 9 aspect ratio, the brightness of an image signal is increased or the brightness level is momentarily increased as the mode is switched to an aspect ratio of 4: 3. Accordingly, viewers who are watching a broadcast program may increase eye fatigue, which may cause vision loss.;Accordingly, in the present invention, in view of the above circumstances, a television receiver having an image processor (3) and a CRT driver (5) to automatically adjust the screen brightness when the screen size changes; And a mode selecting means (11), an adjustment data storing means (14), and a control means (15). By executing the brightness control function of the image processing unit 3, the screen brightness according to the variation in the screen size of the television receiver is automatically adjusted.