High definition looks great, my normal cable looks grainy. Why do they look so different?
The LCD monitor is a High definition compatible monitor. This means that it is capable of displaying approximately 1000 lines of resolution. Since this is a digital TV it can only display this amount. High-definition signals are approximately 1000 lines of information. This high definition signal is input to the monitor and is displayed on the screen with very little processing done by the conversion software in the monitor. This allows for a very vibrant image when you are displaying a true HDTV signal. When you are using a standard definition signal of less than 250 lines the monitor has to reprocess this signal to make it fit on the high definition screen. This is called up conversion and, depending on the quality of the input signal, can cause the image to look extremely grainy and sometimes can exhibit a decrease in color and sharpness. If you are connected from a cable box into the TV in, composite or AV1, or S-video on the monitor you are providing a standard-definition signal.
