APPARATUS FOR TRANSFER OF FILM TO VIDEO

摘要

An apparatus is disclosed for use in a method for scanning an image on a film and generating a video signal therefrom, the apparatus comprising a signal processor (10) receiving a plurality of input raster lines representing a film image, and control means (11) having controls (14) operating on said signal processor whereby the number of said input raster lines used by the signal processor in the active raster to generate said output signal is variable. A signal representing a sequentially scanned image is supplied to filter (12) which performs an anti-aliasing and a decimation process. The amount of oversampling can be varied depending on various factors, such as film speed, and degree of anti-aliasing and aperture correction so as to optimise performance and, in CRT-based systems, so as to maintain the size of the raster on the face of the CRT above a predetermined minimum.