| 摘要 |
PROBLEM TO BE SOLVED: To perform synchronous updating of song list data etc. between a remote control device and a karaoke system main body, and to always utilize a newest song, by making the remote control device user-friendly. SOLUTION: The plurality of remote control devices 4 obtain the song list data etc. of the karaoke system main body 1, and each remote control device 4 includes: a memory for storing the song list data etc.; and an operation screen for displaying the song list data etc. Each remote control device 4 and the karaoke system main body 1 are bi-directionally communicable via radio wave 5 of an RF wireless system, and the newest song list data etc. distributed to the karaoke system main body 1 are updated in synchronism with the memory of each remote control device 4, and information is shared. COPYRIGHT: (C)2007,JPO&INPIT
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