| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a fail-safe control system at the time of abnormal power supply voltage in which damage on the hardware is minimized at each functional section in an electronic apparatus upon occurrence of an abnormal power supply voltage and the hardware at other functional sections in the electronic apparatus is not damaged. <P>SOLUTION: A power supply generating section 2 has a plurality of power supply voltage generating sections 22(V1-Vi) supplying a plurality of voltages to respective functional sections 1(#1-#N) through wiring of independent systems. When a voltage monitoring section 11 monitoring each power supply voltage detects an abnormal power supply voltage, each functional section 1(#1-#N) delivers a signal for informing an abnormal state to the power supply generating section 2. Upon receiving the signal for informing an abnormal state, the state monitoring section 21 in the power supply generating section 2 controls each voltage generating section 22(V1-Vi) to interrupt supply of all power supply voltages only to a functional section from where the signal for informing an abnormal state was delivered. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
