Digital reproduction of optical film soundtracks

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems

Reexamination Certificate

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C352S005000, C352S011000, C352S026000

Reexamination Certificate

active

07050142

ABSTRACT:
An apparatus for playback of an analog optical sound track includes a transport for transporting a film including an analog optical sound track. A scanner generates an image signal of only the analog optical sound track. An alignment device aligns the scanner such that the image signal of the analog optical sound track substantially fills a width of the scanner. A processor processes the image signal to form an audio output signal.

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Richter D. et al., “Restoration of Optical Variable Density Sound Tracks on Motion Picture Films by Digital Image Processing”, Optim. Proceedings of the International Conference on Optimization of Electrical and Electronic Equipments, XX, XX, vol. 3, May 11, 2000, pp. 793-798, XP008002764.
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Patrick Strule, “Digital Images Based Restoration of Optical Movie Soundtracks,” ETH, Zurich 1999, p. 7.
Patrick Strule, “Digital Images Based Restoration of Optical Movie Soundtracks,” ETH, Zurich 1999, pp. 55-56.

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