These signals will require a new digital-ready TV that is able to display them, or a converter box that can reformat the signals for standard TV sets. Choosing a set by its resolution capabilities will be important in Digital Television, but for standard television sets, there are other factors that affect picture clarity. The comb filter is one of the critical features of any TV set. How cleanly those signals are separated is the job of the comb filter. When the images are displayed on the screen, the lines between colors should be sharp and clean, not blurry as if drawn with a crayon, or jagged with blocky edges.
Notch filters are the crudest and are found on entry-level TV sets.
Sharpness A TV's Sharpness control can often have the opposite effect - detail is lost. Check the setting on your TV - it's usually at the midpoint. Adjust the control up and down to get a sense of what it is doing to the picture. Watch the edges of lettering and lines. Turn the Sharpness down until any white halos on lines or lettering are lessened or disappear.