Digitizer with masking apparatus

H - Electricity – 04 – N

Patent

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Details

H04N 1/04 (2006.01) H04N 1/195 (2006.01) H04N 1/10 (2006.01) H04N 1/193 (2006.01)

Patent

CA 2468255

A digitizer (100) having an illuminator (101) with a mask configured to rotate about a central axis (Fig. 3) for reducing flare from the illuminator when digitizing a data medium having a width less than an associated length of the illuminator. A page width guide of the digitizer may be operatively coupled to the mask so that movement of the page width guide automatically rotates the mask a predetermined amount. A rare gas, external electrode, cold cathode fluorescent lamp may also be utilized as an illuminator in the digitizer.

L'invention concerne un numériseur (100) comprenant un illuminateur (101) doté d'un masque conçu pour effectuer une rotation autour d'un axe central (Fig. 3), aux fins de réduction de lumière parasite provenant de l'illuminateur lors de la numérisation d'un support de données dont la largueur est inférieure à une longueur associée de l'illuminateur. Un guide de largeur de page du numériseur peut être couplé de façon fonctionnelle au masque, de manière que le déplacement du guide de largeur de page provoque automatiquement une rotation prédéterminée du masque. Un gaz rare, une électrode externe, une lampe fluorescente à cathode froide peuvent également être utilisés comme illuminateur dans le numériseur.

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