| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform control in consideration of the usefulness for users with respect to various devices provided with a timer function. <P>SOLUTION: In an example of application of this invention to an automatic playing piano which automatically plays music only for a set time on the basis of playing data, fade-out processing of gradually reducing the sound volume of emitted sounds of the piano is performed when a time shorter than the set time by a prescribed time passes. When the set time passes after the start of automatic playing, a member attached to the piano, for example, a large cover is controlled from the open state (the position for automatic playing) to the close state (the position for the end of automatic playing). <P>COPYRIGHT: (C)2003,JPO |
