Correction of optical film soundtrack deficiencies

Details Correction of optical film soundtrack deficiencies Correction of optical film soundtrack deficiencies

G - Physics

03

B

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

Patent

CA 2460362

An apparatus and method for analog optical sound track playback comprises a means for transporting a film including an analog optical sound track and audio representative envelope. A scanning means forms a display image signal representative of the analog optical sound track with the audio representative envelope. An alignment means aligns the scanning means such that only half of the analog optical sound track with the audio representative envelope form the display image signal and substantially fill a width of the scanning means. A processor processes the image signal representing only half of the analog optical sound track and the audio representative envelope and forms therefrom an audio output signal.

L'invention concerne un appareil et un procédé de lecture de pistes sonores optiques analogiques. Cet appareil comprend un moyen permettant de transporter le film, comprenant une piste sonore optique analogique et une enveloppe audio représentative. Un moyen de balayage forme un signal d'image représentatif de la piste sonore optique analogique avec l'enveloppe audio représentative. Un moyen d'alignement aligne le moyen de balayage de telle sorte que la moitié seulement de la piste sonore optique analogique avec l'enveloppe audio représentative forme le signal d'image et remplit sensiblement la largeur du moyen de balayage. Un processeur traite le signal d'image représentant la moitié uniquement de la piste sonore optique analogique et de l'enveloppe audio représentative et forme ainsi un signal de sortie audio.

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