Electronic scanning of super-8 films for reproduction on a T.V.

Details Electronic scanning of super-8 films for reproduction on a T.V. Electronic scanning of super-8 films for reproduction on a T.V.

1979-07-11

1982-05-18

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 44, 358216, 358208, H04N 911, H04N 907, H04N 308

Patent

active

043307930

ABSTRACT:
Super-8 motion-picture film is transported non-intermittently at constant speed, and its image is projected into an image plane in which is located a single row of photodiodes which extends transverse to the film transport direction. The photodiodes of the single photodiode-row are successively responsive to red, blue and green wavelengths. A bucket-brigade circuit or CCD including the photodiode-row furthermore includes a shift register which receives the photodiode signals in parallel, is then read out serially, with its output signal then time-division demultiplexed to obtain separate red, blue and green signals; or else three shift registers are used, each receiving signals only from those photodiodes responsive to a respective one of the three component colors. Whereas the photodiode-row is responsible for horizontal scanning, vertical scanning is achieved in part due to film transport per se and in part due to a tilting-mirror deflector which deflects the image projected onto the photodiode-row. The tilting-mirror deflector is a galvanometric moving-coil mechanism, and is energized by a sawtooth waveform to effect forwards scanning and abrupt vertical-direction flyback or tiltback, and is provided with special brief pulses for effecting abrupt direction reversals of the tilting mirror.

REFERENCES:
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patent: 3770890 (1973-11-01), Winkler
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patent: 4148071 (1979-04-01), Zinchuk
patent: 4153912 (1979-05-01), Gold
Childs et al., "An Experimental Telecine Using a Line-Array CCD Sensor", SMPTE Journal, vol. 87, No. 4, Apr. 1978, pp. 209-213.
Sequin et al., Charge Transfer Devices, Academic Press, Inc. _New York, 1975, pp. 216-217.
Noll, Television for Radiomen, The Macmillan Company, 1955, pp. 30, 31.
Poetsch, "A Continuous-Motion Color Film Telecine Using CCD Line Sensors," SMPTE Journal, vol. 87, Dec. 1978, pp. 815-820.

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