The present invention relates to a TV receiver system, and in the related art, in order to adjust the image quality in such a system, the user is difficult to avoid the hassle of such an operation as well as precise image quality by adjusting the sharpness adjustment knob by turning the user while looking at the screen. It was also difficult to guarantee. The present invention is connected between the microprocessor 206 and the video processing circuit 219 of the system in order to solve the conventional problems, the brightness detection data to the microprocessor 206 according to the ambient brightness set the set; A microprocessor 206 which is connected to the output of the peripheral brightness detection processing unit 1 to provide the image quality adjustment output to the video processing circuit 219, and a video process which performs the image quality adjustment operation under the control of the microprocessor 206; It is to provide a quality compensation system according to the external brightness in the TV receiver consisting of a circuit 219.
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