FIELD: radio engineering, communication.
SUBSTANCE: x-ray detector and its pixel circuit allow to cover a wide dynamic range using automatic selection of the sensitivity setting in each pixel, thus providing improved signal to noise ratio at all exposure levels. This invention describes several approaches to provide automatic sensitivity selection in the pixels. This ensures that weak signals are stored in a small capacitor or read out with a high sensitivity with corresponding good signal to noise ratio, while stronger signals are stored in larger capacitors or are read out with lower sensitivity so that no information is lost.
EFFECT: higher flexibility of the dynamic range.
9 cl, 20 dwg
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Authors
Dates
2014-03-10—Published
2009-06-19—Filed