Patent ID: 7146096

Claim:
An information recording medium configured to store a management file and a video file or an audio file, the video file or the audio file comprising an information object including object units including video data or audio data, which is to be decoded, and the management file including management information for controlling presentation of the information object in the video file or the audio file, the management information including, (i) audio/video file information including object information and one or more object information search pointers, the object information including time map information, (ii) original program chain information which includes first cell information representing a part of cells and referring to the time map information, the part of cells indicating presentation times, the first cell information including cell type information indicating a cell type and numeral information of one of the object information search pointers, the part of cells indicating presentation periods of the information object using the presentation times, the time map information being used in conversion from the presentation times to offset addresses, and (iii) user-defined program chain information which includes second cell information, the user-defined program chain information designating a reproduction order of another part of the cells, the reproduction order being different from a fixed reproduction order designated by the original program chain information, wherein an information recording or reproducing apparatus accesses the original program chain information to reproduce the audio/video file information.