| 摘要 |
PROBLEM TO BE SOLVED: To provide a Karaoke system equipped with an overlapping music piece notification function, in which user's singing opportunity is assured by judging that a music piece of reserve request can be sung even when it is already reserved or sung by others. SOLUTION: A reserve management means 51 registers a selection music piece with a user ID, in a reserve queue 55, and a performance history management means 50 stores a sung music piece with the user ID in a performance history list 57 sequentially, according to the reserve queue 55, while a system utilization state of login or logout in the user ID is managed. When a prescribed user selects a music piece, an overlapping music piece notification means 40 notifies that music pieces are overlapped, when a music piece to be selected is registered in the reserve queue 55, or stored in the performance history list 57, and a selecting person of the music piece which is registered or stored in the system utilization state of login. COPYRIGHT: (C)2009,JPO&INPIT
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