FIELD: physics.
SUBSTANCE: distortion module reduces brightness of a backlight source according to the video signal histogram so that contrast can be a predetermined target contrast. A configuration projecting unit sets the gain according to the brightness level of the backlight source selected by the distortion module. During setup, the gain is attached to the control brightness level of the backlight source preset according to the video parameter value. If the video parameter value satisfies a preset condition, the input video signal is always amplified with the gain, otherwise the input video signal is amplified or not.
EFFECT: broader functional capabilities of the video display device, particularly preventing limitation of the white level, possibility of display with a sensation of lightness, for which the limitation of the white level is controlled, possibility of presenting lightness without full white filling and achieving a video image with an improved black level.
16 cl, 36 dwg
