发明名称 |
Radiation imaging apparatus, its control method, and radiation imaging system |
摘要 |
A radiation imaging apparatus having high frame rate and picture quality by offset correction has: a sensor array having matrix-shaped pixels each including a converting element and a TFT; a driver for supplying signals to control terminals of the TFTs row by row; a reader for holding a signal in a first or second sampling/holding (S/H) circuit and outputting an image signal; and a controller for controlling the driver and reader. Until the image signal is output after irradiation of the apparatus with pulsating radiation, the TFT of a pixel is driven so as to output a first signal, the TFT of the pixel to which the first signal has been output is driven so as to output a second electric signal, and the reader outputs the image signal of the signal showing a difference between the first and second signals held in the first and second S/H circuits. |
申请公布号 |
US8247779(B2) |
申请公布日期 |
2012.08.21 |
申请号 |
US20090490926 |
申请日期 |
2009.06.24 |
申请人 |
KAMESHIMA TOSHIO;ENDO TADAO;YAGI TOMOYUKI;TAKENAKA KATSURO;YOKOYAMA KEIGO;CANON KABUSHIKI KAISHA |
发明人 |
KAMESHIMA TOSHIO;ENDO TADAO;YAGI TOMOYUKI;TAKENAKA KATSURO;YOKOYAMA KEIGO |
分类号 |
G01T1/24 |
主分类号 |
G01T1/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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