VIDEO SIGNAL GENERATING DEVICE AND A METHOD THEREOF, CAPABLE OF MINIMIZING CROSS-TALK BETWEEN BRIGHTNESS SIGNAL AND CHROMATIC SIGNAL FOR MAINTAINING BRIGHTNESS INFORMATION OF A CIRCLE IMAGE

摘要

PURPOSE: A video signal generating device and a method thereof are provided to generate a video signal which is conserved even if a chromatic signal is changed by a sub-sampling.;CONSTITUTION: A linear brightness signal generating unit(910) generates a linear brightness signal by using a linear RGB signal about an input image. A brightness signal converting unit(920) converts the linear brightness signal to nonlinear brightness signal. A chromatic signal converting unit generates a chromatic signal by using at least two signals among one brightness signal, linear RGB signal and a nonlinear RGB signal.;COPYRIGHT KIPO 2011