专利内容由知识产权出版社提供
专利名称：ADAPTIVE PERSISTENT CURRENT
COMPENSATION FOR PHOTON COUNTINGDETECTORS
发明人：PROKSA, Roland申请号：EP12818819.0申请日：20121212公开号：EP2932300A1公开日：20151021
摘要：An imaging system (100) includes a direct conversion detector pixel (111) thatdetects radiation traversing an examination region and generates an electrical signalindicative thereof, wherein the signal includes a persistent current, which is produced by adirect conversion material of the pixel and which shifts a level of the signal. A persistentcurrent estimator (116) estimates the persistent current and generates a compensationsignal based on the estimate. A pre-amplifier (112) receives the signal and thecompensation signal, wherein the compensation signal substantially cancels the
persistent current, producing a persistent current compensated signal, and that amplifiesthe compensated signal, generating an amplified compensated signal. A shaper (114)generates a pulse indicative of energy of the radiation illuminating the direct conversionmaterial based on the amplified compensated signal.
申请人：Koninklijke Philips N.V.,Philips GmbH
地址：High Tech Campus 5 5656 AE Eindhoven NL,Lübeckertordamm 5 20099Hamburg DE
国籍：NL,DE
代理机构：Versteeg, Dennis John
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