Signal processing

Details Signal processing Signal processing

H - Electricity

04

N

H04N 5/33 (2006.01) H04N 5/217 (2006.01)

Patent

CA 2205851

A signal processor (10) receives both open and closed field values for elements of a detector (11) and corrects for non-uniformities in offset response between the elements prior to converting the signal to a digital signal via an A to D converter (15). The corrected signal is then digitally processed to compensate for linear and higher order non- uniformities in the response of the element. The invention enables the A to D converter to have relatively low resolution for a given output radiation.

Le processeur (10) de signaux reçoit à la fois des valeurs de champ ouvert et fermé d'éléments d'un détecteur (11) et corrige les manques d'uniformité de la réponse décalée entre ces éléments avant de convertir le signal en signal numérique via un convertisseur A/N (15). Le signal corrigé est ensuite traité numériquement afin de compenser les manques d'uniformités linéaires et d'ordre supérieur de la réponse de l'élément. L'invention permet que ce convertisseur A/N possède une résolution relativement basse pour un rayonnement de sortie donné.

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