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Question: What is interlaced scanning?
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| Answer: Some HD televisions and most conventional televisions use the "interlace" method of scanning, in which the picture is transmitted and painted on the screen in two passes. In the first pass, every other line is painted and in the second, the lines in between. Some display types, such as LCD and plasma, cannot display directly images transmitted as interlaced signals and must convert them to a progressive format prior to their display.
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