Built-in tuner in a tv

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There are various types of tuners that may be built into a television:

NTSC (National Television System Committee) is the analog television broadcasting standard used widely in North America. It is referred to as a 525-line standard, but actually displays only 480 lines. NTSC is to be replaced with new DTV (Digital TV) standards in the coming years.

The PAL (Phase Alternating Line) standard was introduced in the early 1960's and was implemented widely in Europe. It has a wider channel bandwidth than NTSC as it runs on 635 lines.

ATSC (Advanced Television Standards Committee) creates the technical standards for the US digital television system (DTV). These standards are expected to be used in most new televisions, as the US television system shifts from analog to digital.

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A in built tuner is basically meant to enhance the quality of your tv viewing , it basically caters to the broadcasts of different types and the fact that most in built tv tuners require you to have antenna with them . A built in tv tuner is good buy as it really helps you to get good digital braodcasts and make them finer without really the need to buy an additional external tuner .