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:
Sep. 29, 2015
Filed:
May. 24, 2012
Takeshi Kuwabara, Kanagawa, JP;
Keita Watanabe, Kanagawa, JP;
Jun Enomoto, Kanagawa, JP;
Yasufumi Oda, Kanagawa, JP;
Takeshi Koishi, Kanagawa, JP;
Takeshi Kuwabara, Kanagawa, JP;
Keita Watanabe, Kanagawa, JP;
Jun Enomoto, Kanagawa, JP;
Yasufumi Oda, Kanagawa, JP;
Takeshi Koishi, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
An x-ray image detector monitors the intensity of incident x-rays to detect an end of radiation from an x-ray source when the x-ray intensity decreases to a threshold level or less. The x-ray intensity gets down to zero with a variable time lag from the start of decreasing, called radiation wave tail. Depending on the gradient of declivity in time curve of the decreasing x-ray intensity, calculated at the time when the end of radiation is detected, the x-ray image detector decides a delay time from the end-of-radiation detection time to a reading start time to start reading signal charges from the image detector. Thus, the reading start time may be adjusted to the point when the x-ray intensity gets down to zero, which will improve S/N ratio and prevent shading artifacts.