The analog or digital components (such as RGB, Y/I/Q, Y/U/V,
 Y/R-Y/B-Y, Y/Cr/Cb, etc.) of a compatible standard-bandwidth
 2-1 interlaced television signal, an analog signal, such as a 
 standard NTSC or PAL television signal or a standard format digital
 signal, such as a digital representation of a standard NTSC or
 PAL television signal or a digital video signal in one of the 2:1
 interlaced CCIR 601 hierarchical formats, is converted from interlaced
 to progressive scan, the progressive scan frame rate corresponding to
 the interlaced scan field rate and each progressively scanned frame
 having twice as many scan lines as in each interlaced field, the
 conversion often referred to as "line doubling;"