| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to obtain a next requested music in a short time by measuring the time to be required for performance for every requested music, and changing stand-by time corresponding to result of measurement. SOLUTION: A center device 1 instruct a video disc player B, which is not playing or which is waiting, to prepare the performance of a requested music showed in the information on the number of the next requested music. When the video disc player B concludes the preparation of performance, the video disc player B transmits the conclusion of preparation of performance to the center device 1. When a video disc player A concludes the performance of a first requested music, the video disc player A transmits the conclusion of performance to the center device 1. The center device 1 immediately informs the conclusion of performance of the first requested music to a terminal device 2. Consequently, the terminal device 2 can obtain the time required for the performance of the first requested music, and the stand-by time of a following music is set. The center device 1 outputs the music start information for the following music to the terminal device 2, and the video disc player B generates the performance starting command. |
