When the terminal 5 requests a partial access of a desired karaoke song to the center 3 in S380, only the climactic passage data of the karaoke song is transmitted from the center 3 to the terminal 5. The terminal 5 reproduces the climactic passage in S400. Then, the terminal 5 determines whether...http://www.google.com.tw/patents/US5691915?utm_source=gb-gplus-share專利 US5691915 - Data transmission device