| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide electronic equipment whose power can be saved while using no wasteful power. <P>SOLUTION: A communication Karaoke device 1 is provided with at least a loudspeaker 4 outputting musical sound information and a monitor 5 displaying word information related to musical sound information. The communication Karaoke device 1 is provided with an identification signal transmission device and a use detection device 15 which detect whether the device 1 is used or not, and a CPU 8 measuring a period of time during which the communication Karaoke device 1 is not used. If the CPU 18 measures the fact that a non-use state continues for a prescribed period when a sub-power source 19 of the communication Karaoke device 1 is turned on, it sets the sub-power source 19 to an off state. <P>COPYRIGHT: (C)2004,JPO |
