How is digital television different from the existing analog television service?

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How is digital television different from the existing analog television service?

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With digital television, broadcasters are able to offer free, over-the-air television of higher resolution and better picture quality than is possible under the current mode of TV transmission. If broadcasters so choose, they can offer HDTV-television with theater-quality pictures and CD-quality sound. Alternatively, a broadcaster can offer several different TV programs at the same time, with picture and sound quality better than is available today from the analog broadcast service.

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