To realize high image quality by detecting a reception signal pattern in a pseudo way for optimally controlling a frequency characteristic of a video output circuit.

Fluctuations in a reception signal pattern and in a luminance or the like is detected in a pseudo way as a fluctuation in a high-voltage load voltage or in an ABL voltage, and the detected result is given to a detection circuit 1. An output of the detection circuit 1 is given to a 1st frequency characteristic correction circuit 3 and a 2nd frequency characteristic correction circuit 4, which optimally control a frequency characteristics correction level of a video output circuit 2.