How to reduce horrendous dot crawl?
August 18, 2007
Fortunately, it’s possible to greatly reduce dot crawl by using a comb filter. A comb filter is a phase cancellation filter that works by adding a slightly delayed version of the signal to the signal itself. It can be implemented in the composite video hardware or in software. Click to read more! 
Source: Digg.com – Posted by: strawroot
Link to Story: http://www.techarp.com/showFreeBOG.aspx?lang=0&bogno=345
