Patent ID: 9024244
Filing Date: 2015-05-05
Classification: H01L,H04N

Abstract:
1. A radiation image capturing apparatus comprising: a detecting section including: a scanning drive unit which sequentially applies on-voltage to each of the scanning lines by switching the scanning lines to which the on-voltage is applied; switch units each connected to each of the scanning lines so as to discharge electric charge accumulated in the radiation detection elements to the signal lines when the on-voltage is applied; reading circuits, which are connected to the plurality of signal lines and which convert the electric charge discharged from the radiation detection elements into image data, to read out the image data; and a control device for controlling at least the scanning drive unit and the reading circuits to perform reading out the image data from the radiation detection elements, wherein the control device is configured to allow the reading circuits to repeat reading out data prior to radiation image capturing operation so as to detect a start of irradiation when the data read out by the reading circuits exceeds a threshold value; and wherein when the data read out prior to the radiation image capturing operation fluctuates periodically even though the irradiation has not started, the control device determines whether or not a value obtained by subtracting a previously obtained fluctuation pattern of the data from the read-out data has exceeded a threshold value, during a time period prior to the radiation image capturing operation including at least a time period when the data fluctuates.