An information recording medium is provided with: an object data file for storing object data which constitutes a series of content information, such as picture information and audio information, and a play list information file for storing play list information which defines a reproduction sequence...http://www.google.com.hk/patents/US6985411?utm_source=gb-gplus-share專利 US6985411 - INFORMATION RECORDING MEDIUM, INFORMATION RECORDING AND/OR REPRODUCING APPARATUS AND METHOD, AND PROGRAM STORAGE DEVICE AND COMPUTER DATA SIGNAL EMBODIED IN CARRIER WAVE FOR CONTROLLING RECORD OR REPRODUCTION