LINE DOUBLER ADAPTED FOR REPRODUCING PROGRAM ORIGINALLY FROMFILM (E.G., 24 FRAME PER SECOND):
Art collection of television receivers that convert the normal interlaced signal (e.g., NTSC) into a progressive signal for display and, which have at least two modes for so converting the received signal; one mode for regular TV signals and a different mode for converting signals that originally were on film.
(1) Note. When movies are broadcast on TV, the different frame rates must be compensated for this is usually done using a so called 3:2 pull down scheme where one frame of
film is used to produce two fields of TV and the next frame of film is used to produce two fields of TV; many or the converters herein are designed to use two fields of the received TV signal to make one of the progressively scanned display frames making sure that the two fields used are from the same frame of film.
