Digital imaging of optical film soundtrack

Details Digital imaging of optical film soundtrack Digital imaging of optical film soundtrack

G - Physics

11

B

G11B 7/003 (2006.01) G03B 31/02 (2006.01)

Patent

CA 2458655

An apparatus for playback of an analog optical sound track comprises a transport means for transporting a film including an analog optical sound track. A scanning means generates an image signal of only the analog optical sound track as gray scale values. An alignment means aligns the scanning means such that the image signal of only the analog optical sound track substantially fills a width of the scanning means. A processor processes the image signal to form an audio output signal.

L'invention concerne un appareil de lecture d'une piste sonore photographique analogique, qui comprend un moyen de défilement pour faire défiler un film comprenant une piste sonore photographique analogique. Un moyen de balayage génère un signal d'image de la seule piste sonore photographique analogique comme valeur de niveaux de gis. Un moyen d'alignement aligne le moyen de balayage si bien que le signal d'image de la seule piste sonore photographique analogique remplit sensiblement une largeur du moyen de balayage. Un processeur traite le signal d'image afin de former un signal de sortie audio.

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