Patent ID: 7777815
Filing Date: 2010-08-17
Classification: H04N

Abstract:
1. A video image quality control apparatus, in a broadcast receiver apparatus having a video processing portion to which a digital video signal is input and which adjusts screen brightness by adjusting the digital video signal in accordance with image quality adjustment data, the video image quality control apparatus comprising: a daytime start/end time table holding portion that holds at least a regional daytime start/end time table; an installation region determination portion that determines an installation region of the apparatus based on regional setting information according to a digital broadcasting protocol; a daytime start/end time specifying portion that specifies daytime start/end time of the installation region by referring to the daytime start/end time table based on information of the installation region; an adaptive image quality adjusting portion that outputs the digital video signal that gradually changes in a time zone before reaching the start/end time, and that adjusts the screen to a bright direction before the start time and to a dark direction before the end time, based on the specified daytime start/end time; a sensor that detects ambient brightness; and a sensor output utilization portion that corrects the image quality adjustment data in accordance with an output of the sensor.