Patent ID: 7764867

Claim:
A machine readable information recording medium embodied as an optical disc for access by an object disc drive, the information recording medium comprising: a first area in which a video file is recorded, the video file including an extent, the video file including video objects, the video objects having video object units; one of the video object units containing one begin pack, and said begin pack including recording time information on the video object unit; a second area in which a management file is recorded, the management file including information containing time map information, said video management information including a plurality of cell information, a plurality of the cell information representing respective cells, one piece of said cell information including information referring to one piece of said video object information, the video management information including original program chain information and user-defined program chain information, the original program chain information designating a fixed reproduction order of one part of the cells, the user-defined program chain information designating a reproduction order of other part of the cells, a fixed reproduction order of said one part of cells being different from a reproduction order of the other part of cells, and a specific cell of the cells being not presented during playback for the video objects; a third area in which file management information is recorded, the file management information including a File Identifier Descriptor (FID) and a file entry (FE) specifying a location of the video file, the file entry (FE) including a short allocation descriptor and information control block (ICB) tag, the short allocation descriptor having length information on the extent and position information on said extent, the ICB tag specifying File Type, the File Identifier Descriptor (FID) including a long allocation descriptor specifying an address relating to the file entry, logical blocks and logical sectors being assigned to the information recording medium, logical sector numbers being assigned to the logical sectors, a length of one of the logical blocks being equal to a length of one of the logical sectors, and logical block numbers being assigned to the logical blocks; and a fourth area in which a logical volume descriptor is recorded, the logical volume descriptor specifying information on a logical volume, the logical sector numbers being assigned to the third area and the fourth area, and the logical block numbers being assigned to the third area and not assigned to the fourth area, wherein AV address is defined within the video file, the video management information includes information expressed in the AV address, and the video management information is read and provided to control recording, playing back, or editing the video file by an information recording/reproducing apparatus, the video file is accessed according to the read video management information.