Patent ID: 7839977

Claim:
A radiation imaging apparatus comprising: a conversion unit having a plurality of pixels arranged in a matrix, each of the plurality of pixels including a conversion element which converts radiation into charges, a first switching element which is connected to the conversion element to transfer charges converted by the conversion element to a signal line, and a second switching element connected to the conversion element to reset the conversion element; a first driving circuit unit to drive the first switching element; a second driving circuit unit to drive the second switching element; a mode selection unit configured to select a plurality of operation modes, the plurality of operation modes includes a first operation mode and a second operation mode; and a control unit to control the first driving circuit and the second driving circuit independently at different timing, wherein the control unit controls the first driving circuit based on the first operation mode selected by the mode selection unit such that the first driving circuit unit drives a plurality of the first switching elements arranged in one line substantially at the same timing and controls the first driving circuit based on the second operation mode selected by the mode selection unit such that the first driving circuit unit drives a plurality of the first switching elements arranged in at least two lines substantially at the same timing, and wherein the control unit controls the second driving circuit based on the first operation mode selected by the mode selection unit such that the second driving circuit unit drives a plurality of the second switching elements arranged in one line substantially at the same timing and controls the second driving circuit based on the second operation mode selected by the mode selection unit such that the second driving circuit unit drives a plurality of the second switching elements arranged in at least two lines substantially at the same timing.