Patent ID: 8049818

Claim:
A video processing apparatus comprising: a decoder to extract color information from a video signal comprising vertical synchronous information for a vertical scanning frequency of a picture, color information of the picture, and frequency information corresponding to the color information of the video signal; a frequency storage device to store the vertical scanning frequency and a frequency of the color information corresponding thereto; a frequency evaluator to evaluate the vertical scanning frequency and the frequency of the color information of the video signal on the basis of the stored vertical synchronous information and the stored frequency information of the color information; and a controller to control the decoder to extract the color information on the basis of the frequency of the color information when the vertical scanning frequency and the frequency of the color information evaluated by the frequency evaluator are identical with the vertical scanning frequency and the frequency of the corresponding color information stored in the frequency storage device, and to determine that the video signal does not have a color system when the received frequency of the color information is not identical with the predetermined frequency of the corresponding color information stored in the frequency storage device.