Patent ID: 8854490
Filing Date: 2014-10-07
Classification: H04N

Abstract:
1. An apparatus for compensating a black level, comprising: an image signal processor for converting an input image signal into an image signal at YUV color coordinates so that a Y component of the image signal at the YUV color coordinates is in a first signal range; and a black level compensator for selecting, according to a type of an external image output device, a signal range for the Y component of the converted image signal, and compensating the Y component of the converted image according to the selected signal range, wherein compensating the Y component of the converted image signal according to the selected range includes compensating, if the external image output device is a first type of external image output device, the Y component of the converted image signal at the YUV color coordinates so that the compensated Y component of the converted image signal at the YUV color coordinates is in a second signal range narrower than the first signal range and maintaining, if the external image output device is a second type of image output device different from the first type, the Y component of the converted image signal at the YUV color coordinates in the first signal range.