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US 6,737,654 B2Granted
Method for temperature compensation of an image detector
AssigneeTrixell
InventorThierry Ducourant
Life of this patent
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AssigneeTrixell
InventorThierry Ducourant
Estimating the term…
A method and device for temperature compensation of an image detector including photosensitive spots sensitive to ambient temperature, each connected to a row conductor and a column conductor. The photosensitive spots are connected by their conductors to a read circuit. The photosensitive spots are divided into detecting photosensitive spots to be exposed to light information corresponding to the image to be detected, the read circuits associated with these photosensitive spots each delivering a measurement voltage representative of the image to be detected, and into blind photosensitive spots protected from the light information, the read circuits associated with these blind photosensitive spots each delivering a dark voltage serving for temperature compensation. During detection of an image the dark voltages are picked up, then an average correction value from the dark voltages coming from one or more detected images is generated, and the average correction value is used to generate a correction voltage to be applied, during detection of a subsequent image, to the read circuits associated with the detecting photosensitive spots so that they deliver a measurement voltage made substantially independent of temperature. Such a method and device may find application in particular to radiological image detectors.
A method for temperature compensation of an image detector including photosensitive spots sensitive to ambient temperature, each connected to a row conductor and a column conductor, each of the photosensitive spots being connected by one conductor to a read circuit, wherein the photosensitive spots are divided into a) detecting photosensitive spots configured to be exposed to light information corresponding to the image to be detected, read circuits associated with the detecting photosensitive spots each delivering a measurement voltage representative of the image to be detected, and b) into blind photosensitive spots protected from the light information, read circuits associated with the blind photosensitive spots each delivering a dark voltage serving for temperature compensation, comprising:
A temperature-compensated image detector including photosensitive spots, each connected to a row conductor and a column conductor, each photosensitive spot being connected by one conductor to a read circuit, wherein the photosensitive spots are divided into a) detecting photosensitive spots, configured to be exposed to light information corresponding to the image to be detected, read circuits associated with the detecting photosensitive spots each delivering a measurement voltage representative of the image to be detected, and b) into blind photosensitive spots protected from the light information, read circuits associated with the blind photosensitive spots each delivering a dark voltage used for temperature compensation, comprising:
Dependencies are inferred from the claim text.