Definitions for "Line Doubler"
A device, or circuit in a device, which converts interlaced video to progressive scan video. Interlaced pictures are painted in two passes. Every other line is painted in the first pass and the alternate lines are painted on the second pass. A line doubler, aka deinterlacer, creates a complete picture, filling in all of the lines, for each scan. More lines results in a better picture.
A video processor that doubles the number of lines in the scanning system in order to create a display with scan lines that are less visible. Some line doublers convert from interlaced to progressive scan.
A video device which enhances picture quality by deinterlacing the picture into progressive frames.
a non-trivial project unless you are an experienced digital/ analog designer - even with the new generation of chips on the market
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