Patent ID: 9097809
Filing Date: 2015-08-04
Classification: G01T,H04N

Abstract:
1. A digital radiographic area detector comprising: a plurality of pixels including electrically chargeable photosensors arranged over the area detector, where the plurality of pixels are configured to form an imaging array to capture radiographic images at the area detector; a bias control circuit providing a bias voltage across the photosensors to charge each photosensor; at least one sensor configured to provide a reading responsive to light delivered to each photosensor, the reading used for generating a captured radiographic image; and a photosensor trap occupancy change monitor coupled to at least one photosensor of the plurality of pixels to measure an amount of change over a preselected time interval in trap occupancy of the at least one photosensor of the plurality of pixels whereby the measured amount of change is a difference between sequential measurements of trap occupancy over the preselected time interval, to determine whether the measured amount of change over the preselected time interval in trap occupancy satisfies a preselected threshold amount, and to transmit a control signal only if the preselected threshold amount is satisfied.