| 摘要 |
PROBLEM TO BE SOLVED: To efficiently select a song with a simple operation and making a system useful without spoiling design in a karaoke system and a song selection content book with which a desired song is selected from a plurality of songs when playing karaoke. SOLUTION: By using the selection content book 51 in which each song name and its song code are printed in each corresponding song display region, and in which a dot code region where a plurality of dot codes of the same information with the song code are printed in a prescribed arrangement, which are hard to visually discriminate and easy to optically read, is formed on the regions, a graphic user interface (GUI) control means 42 displays selection contents so as to be reserved and registered on a display section 47 by the song code specified by the dot code which a code analysis means 43 optically reads. COPYRIGHT: (C)2008,JPO&INPIT
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