Method and system of automatically determining when x-ray radiation has been received at a sensor
AssigneeDental Imaging Technologies Corporation
InventorUwe Zeller
Life of this patent
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Abstract
A system and method for automatic detection of x-rays at an x-ray sensor. A source emits x-ray radiation towards an x-ray sensor, and the x-ray sensor automatically detects the x-ray radiation. The x-ray sensor automatically detects x-ray radiation by evaluating a time series and determining that a voltage threshold is crossed a certain amount of time earlier than the average time it takes the voltage threshold to be crossed from dark current and other noise.
Claims12
A method of automatically detecting x-ray radiation with an x-ray sensor, the x-ray sensor having a pixel array, the method comprising:
- adaptively resetting the pixel array based on a dark current;
- and
- determining that x-ray radiation has been received at at least a portion of the pixel array when a trigger threshold is passed.
An x-ray sensor that automatically detects receipt of x-rays, the x-ray sensor including a processor and a pixel array, the processor configured to:
- adaptively reset the pixel array based on a dark current;
- determine that x-ray radiation has been received at at least a portion of the pixel array based on passing a trigger threshold;
- and
- after determining that x-ray radiation has been received, output data from the pixel array to be used to generate an x-ray image.
Dependencies are inferred from the claim text.