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:
Mar. 17, 2015
Filed:
Oct. 01, 2009
Junichi Ohi, Kyoto, JP;
Tetsuo Furumiya, Kyoto, JP;
Hiroyuki Takahashi, Tokyo, JP;
Kenji Shimazoe, Tokyo, JP;
Junichi Ohi, Kyoto, JP;
Tetsuo Furumiya, Kyoto, JP;
Hiroyuki Takahashi, Tokyo, JP;
Kenji Shimazoe, Tokyo, JP;
Shimadzu Corporation, Kyoto, JP;
The University of Tokyo, Tokyo, JP;
Abstract
With a pulse-height analyzer, a reference-pulse generator generates a reference pulse of a given pulse height for a given period of time when an analog radiation pulse inputted to a comparator is higher than an initial threshold. A capacitor and a resistor receive the reference pulse, and then increase an increment threshold for the given period of time from the initial threshold to the given pulse height. Then the increment threshold is set as a reference voltage of the comparator. A pulse time width of the analog radiation pulse is determined through measuring a period of time from timing where the analog radiation pulse exceeds the initial threshold to timing where the analog radiation pulse being attenuated falls below the increment threshold.