Patent ID: 6999121
Filing Date: 2006-02-14
Classification: H04N

Abstract:
1. A radiation image pick-up apparatus comprising: conversion means for converting radiation into an electrical signal; accumulation means for performing an accumulation operation of accumulating the electrical signal converted by said conversion means; read means for reading out the electrical signal accumulated in said accumulation means; detection means for detecting start and end of irradiation of the radiation; a driving circuit for driving said accumulation means to perform the accumulation operation responsive to a detection of the start of irradiation of the radiation by said detection means, and for driving said read means responsive to a detection of the end of irradiation by said detection means; and control means for controlling said driving circuit, wherein said control means performs an idling operation of said conversion means before the accumulation operation, with the idling operation continuing until the start of irradiation of the radiation is detected by the detection means, and wherein an operation time Ta of the idling operation and a time Tr for driving said read means in order to read out image information satisfy Tr≧Ta.