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8.10. scan Media Query

The scan media feature can be only be used to describe the scanning process used by tv media type devices. It cannot take min- or max- prefixes, and must take one of two values: progressive or interlace. The progressive value will match most current television screens and older computer monitors, which use consecutive sets of scan lines that progressively fill the screen. The interlace value is a process used on most high-resolution television sets and most current computer monitors, which use a single set of scan lines to fill the screen. For most Web authors, the functional difference between the two is that progressive displays tend to be relatively low resolution and appear “fuzzy,” whereas interlaced displays tend to render sharper, crisper images.

The following media query example would specify where the browser could go to find formatting information for a TV display that uses progressive scanning:


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