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:
Aug. 21, 2007
Filed:
Sep. 13, 2006
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 processing circuit and method used in an industrial X-ray CT apparatus for processing an output signal of a semiconductor X-ray sensor which detects a pulsed X-ray emitted from an accelerator and passed through an object to be inspected. The circuit includes a first resistor having one terminal connected to the X-ray sensor and an other terminal connected to ground, a first capacitor having one end terminal connected to a connection point of the X-ray sensor and the first resistor, an operational amplifier having an inverting input connected to an other terminal of the first capacitor, and an integrator having a second resistor and a second capacitor each connected to the operational amplifier in parallel. The circuit is configured so that at least bias conditions of the X-ray sensor and the first capacitor are returned to a steady state after irradiation of the pulsed X-ray.