Detector circuit
AssigneeOy Varex Imaging Finland Ltd.
InventorsTuomas Pantsar, Jouni Pyyhtiä, Dimitrios Chatzistratis, Gerasimos Theodoratos, Yannis Glikiotis, Teemu Pitkänen
Life of this patent
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Abstract
Some embodiments include an imaging system comprising a detector substrate, at least one detector circuit comprising a capacitor coupled with the detector substrate, the capacitor arranged to collect an electrical charge from the detector substrate, and the imaging system further comprises at least one programmable current source, arranged to provide a neutralizing charge to the capacitor, and the imaging system is configured to select a value for the neutralizing charge in dependence of a frame number.
Claims18
An imaging system, comprising:
- a detector substrate;
- a capacitor coupled to the detector substrate and configured to store charge from the detector substrate during a charge collection operation;
- a switch coupled to the capacitor and configured to selectively electrically connect the capacitor such that the charge stored on the capacitor is read out through the switch during a readout operation;
- and
- a programmable current source coupled to the capacitor and configured to provide charge to the capacitor.
A method, comprising:
- collecting, in a capacitor coupled to a detector substrate, charge from the detector substrate during a charge collection operation;
- selectively electrically connecting the capacitor, by a switch, such that the charge stored on the capacitor is read out through the switch during a readout operation;
- and
- programming a programmable current source coupled to the capacitor;
- and
- providing charge to the capacitor from the programmable current source.
Dependencies are inferred from the claim text.