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:
Feb. 22, 2005
Filed:
Feb. 08, 2002
Hiroshi Kamimura, Hitachi, JP;
Shigeru Izumi, Tokyo, JP;
Hiroshi Kitaguchi, Nakamachi, JP;
Atsushi Yamagoshi, Hitachi, JP;
Katsutoshi Satoh, Hitachi, JP;
Noriyuki Sadaoka, Tokai, JP;
Tarou Takagi, Hitachi, JP;
Kouji Kuwabara, Hitachi, JP;
Shouhei Numata, Hitachi, JP;
Hiroshi Kamimura, Hitachi, JP;
Shigeru Izumi, Tokyo, JP;
Hiroshi Kitaguchi, Nakamachi, JP;
Atsushi Yamagoshi, Hitachi, JP;
Katsutoshi Satoh, Hitachi, JP;
Noriyuki Sadaoka, Tokai, JP;
Tarou Takagi, Hitachi, JP;
Kouji Kuwabara, Hitachi, JP;
Shouhei Numata, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An X-ray sensor signal processor including capacitorsfor removing DC components (dark currents) from output signals of semiconductor sensorstodetecting pulse-like X-rays passed through an object, and integrators (each of which is constituted by a combination of an operational amplifiera resistorand a capacitor) for integrating the output signals of the X-ray sensors after removal of the DC components by the capacitorsBy this, a value proportional to the average number of photons in X-rays can be obtained even in the case where a small number of incident photons are given, and an X-ray CT system using the X-ray sensor signal processor.