The salesman is telling me about the importance of comb filters. What are they and what are the differences between the types?
The video portion of a TV signal contains two major parts. The black and white information which is called the luminance and the color information called the chroma . These are mixed together in the video signal and must be separated so that your TV can properly use each portion. A color TV that does not have a comb filter can separate the luminance from the chroma by using a cut off filter. Using a cut off filter limits the amount of luminance information that can be used and lowers the resolution or detail shown in the picture. A comb filter separates the luminance and chroma in a different more selective method allowing the TV to use more of the luminance and maintain more detail. The better the comb filter used, the better the picture will be. There are over 20 different types of comb filters used in the industry. Often there are different names from different manufacturers for the same type of comb filter so there are even more names than types of comb filters. This does lead to s
