| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve power saving for a device and stabilization of operations of the device. <P>SOLUTION: A radiation image photographing device comprises a switching regulator 60 that regulates power of a battery 28 and supplies the power to functional sections 31 to 35 and an operation control means 30 that controls operations of the functional sections and the switching regulator. The functional section 35 of the functional sections switches between a normal mode in which normal functions are performed and a power-saving mode in which power consumption is smaller than power consumption in the normal mode. The switching regulator switches between switching frequency for a high power output state and switching frequency for a low power output state. When the operation control means allows the functional section to switch from the power-saving mode to the normal mode, the operation control means allows the switching regulator to switch from the switching frequency for a low power output state to the switching frequency for a high power output state prior to the switching from the power-saving mode to the normal mode. <P>COPYRIGHT: (C)2012,JPO&INPIT |
