Method and apparatus for recording and reproducing on film direc

Details Method and apparatus for recording and reproducing on film direc Method and apparatus for recording and reproducing on film direc

1978-07-05

1980-07-01

Konick, Bernard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

1791003D, H04N 584, G11B 700

Patent

active

042109329

ABSTRACT:
Method and apparatus for optically recording and reproducing video signals. The intensity of a laser beam is modulated as a function of the amplitude of the video signals. The modulated laser beam is caused to conduct a raster scan synchronized by standard TV sync pulses and used to expose photographic film. Horizontal and vertical sync bars of contrasting optical density are recorded beyond the borders of the raster. The developed film is a directly viewable reproduction of the image scanned to produce the video signals recorded. To reproduce the video signals, an unmodulated laser beam conducts a raster scan of the developed image recorded on the film. The intensity of the scanning beam is modulated by the optical density of the film and converted to amplitude modulated electrical signals, a reproduction of the video signals recorded. The optically recorded sync bars are also detected and are used to produce electrical sync pulses to position the raster scan conducted by the unmodulated beam to substantially overlie the image recorded on the film being scanned.

REFERENCES:
patent: 3158683 (1964-11-01), Waggener
patent: 3234326 (1966-02-01), Goldmark et al.
patent: 3333058 (1967-07-01), Goldmark et al.
patent: 3335219 (1967-08-01), Goldmark et al.
patent: 3448458 (1969-06-01), Carlson et al.
patent: 3465352 (1969-09-01), Carlson et al.
patent: 3501586 (1970-03-01), Russell
patent: 3892914 (1975-07-01), Takayanagi et al.
patent: 3895317 (1975-07-01), Burton
patent: 4000493 (1976-12-01), Spaulding et al.
patent: 4044363 (1977-08-01), Morgan
patent: 4058832 (1977-11-01), Vagi
patent: 4133005 (1979-01-01), Golay et al.

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