| 摘要 |
PROBLEM TO BE SOLVED: To smooth the amount of transmission data concerning transmission of contents between Kraoke terminals in a Kraoke network system for transmitting/receiving contents between Karaoke devices by P2P communication.SOLUTION: Each Karaoke device 4 transmits client information containing a holding state of contents reserved to be reproduced to a centralized control device 2. The Karaoke device 4 also transmits server information containing the remaining amount of data transmittable during a current period and the holding state of the contents to the centralized control device 2. The centralized control device 2 specifies unacquired contents not owned by the Karaoke device 4 that has received reproduction reservation based on the client information. The centralized control device 2 selects, based on the server information, a Karaoke device 4 having a largest remaining data amount among the Karaoke devices 4 having specified unacquired contents as a server, and notifies the Karaoke device 4 needing content acquisition of the selected server. The Karaoke device 4 that has received the notification acquires contents from the notified server. |
