PROBLEM TO BE SOLVED: To prevent re-photographing due to dose shortage by performing radiation stop control with high accuracy even through noise occurs.SOLUTION: A radiation signal processor includes: an AEC signal reception part 70 for receiving a digital stop advance notice signal transmitted by radio communication from an electronic cassette 20 an AEC signal conversion part 72 for converting the received digital stop advance notice signal into an analog signal representing a dose a noise detection part 74 for detecting whether disturbance noise occurs in the analog signal and a noise processing part 76 for converting a signal representing dose to a signal of an irradiation level less than a radiation irradiation level represented by the analog signal.COPYRIGHT: (C)2014,JPO&INPIT【課題】ノイズが発生しても放射線停止制御を精度良く行って線量不足による再撮影を防止することを目的とする。【解決手段】電子カセッテ20から無線通信によって送信されるデジタルの停止予告信号を受信するAEC信号受信部70と、受信したデジタルの停止予測信号を、線量を表すアナログの信号に変換するAEC信号変換部72と、アナログの信号に外乱ノイズが発生しているか否かを検出するノイズ検出部74と、アナログの信号が表す放射線照射量より少ない照射量の信号に変換する処理を行うノイズ処理部76と、を備える。【選択図】図5
