| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an AV system having battery power supply, by which a user perceives auto-power-off time and by which the problem is avoided wherein the user misunderstands its auto-power-off as the wearing out of the battery power supply. <P>SOLUTION: The AV system includes a control means 20, by which when an input operation of an input means 15 is not performed for a certain time, the autopower-off time is set, according to the remaining capacity of the battery power supply 17 receiving a detected signal of a detection means 19 of the remaining capacity, a counter 14 is operated after the set autopower-off time has elapsed, time until the battery power supply 17 is shut off and a warning sign are displayed on a display means 11, and the battery power supply 17 is shut off, when countdown is finished, by an input detecting means and a timekeeping means. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
