Film transfer apparatus

Details Film transfer apparatus Film transfer apparatus

1996-09-30

1998-10-06

Britton, Howard W.

Television

Special applications

Film, disc or card scanning

348 96, 348100, H04N 5253, H04N 336, H04N 338, H04N 340

Patent

active

058185186

ABSTRACT:
An apparatus for use in a method for scanning an image on a film and generating a video signal therefrom. The apparatus having a signal processor (10) receiving a plurality of input raster lines representing a film image, and a control unit (11) having controls (14) operating on said signal processor, whereby the number of the 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 optimize 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.

REFERENCES:
patent: 5179314 (1993-01-01), Walker et al.
patent: 5448372 (1995-09-01), Axman
patent: 5467412 (1995-11-01), Capitant
patent: 5604533 (1997-02-01), Eiberger

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