The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2003
Filed:
Feb. 20, 2001
Einar Nygard, Vettre, NO;
Tsutomu Yamakawa, Tochigi, JP;
Other;
Abstract
A method and threshold discrimination circuit for threshold discriminating an accumulated charge signal in a charge readout sensor, wherein the accumulated charge signal is shaped with a filter prior to effecting threshold discrimination thereof, and a slew rate of the filter is limited so that the filtered accumulated charge signal reaches a predetermined threshold at a time that remains constant irrespective both of an amplitude of the signal and of charge collection time. Such a threshold discrimination circuit finds particular application in a charge readout sensor in a nuclear imaging system where very accurate determination of the time of photon emission is required.