Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Reexamination Certificate
2008-06-03
2008-06-03
Porta, David P. (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
C250S370110, C348S220100, C378S098900, C378S114000, C382S270000
Reexamination Certificate
active
07381963
ABSTRACT:
It is made possible that, in accordance with a plurality of radiographing modes such as the still image radiographing mode and the moving image radiographing mode, the outputs both in the irradiation period and in the non-irradiation period are made to fall within the dynamic range of the radiographing system, whereby an accurate, high-S/N-ratio X-ray radiographic image is obtained. For that purpose, in accordance with the plurality of radiographing modes, an arithmetic operation unit adjusts a power source to control voltage to be applied to a reading circuit unit or an Analogue-Digital conversion unit, such that, in each of the radiographing modes, both an electric signal in the X-ray irradiation period and an electric signal in the X-ray non-irradiation period fall within the dynamic ranges of the reading circuit unit and the Analogue-Digital conversion unit.
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Endo Tadao
Kameshima Toshio
Takenaka Katsuro
Yagi Tomoyuki
Yokoyama Keigo
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Green Yara B
Porta David P.
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