| US 7,394,970 B2 | ||
| Information recording method, information recording medium, and information reproducing method, wherein information is stored on a data recording portion and a management information recording portion | ||
| Hideo Ando, Tokyo (Japan); and Hiroaki Unno, Yokohama (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Kawasaki-shi (Japan) | ||
| Filed on Jul. 27, 2006, as Appl. No. 11/493,905. | ||
| Application 11/493905 is a division of application No. 10/195789, filed on Jul. 16, 2002. | ||
| Application 10/195789 is a division of application No. 09/651295, filed on Aug. 30, 2000, granted, now 6,529,681. | ||
| Application 09/651295 is a division of application No. 09/311272, filed on May 14, 1999, granted, now 6,341,196. | ||
| Claims priority of application No. 10-133832 (JP), filed on May 15, 1998. | ||
| Prior Publication US 2006/0263055 A1, Nov. 23, 2006 | ||
| Int. Cl. H04N 5/91 (2006.01) | ||
| U.S. Cl. 386—95 [386/126] | 3 Claims |
| 1. An information reproducing method for reproducing information from a recording medium,
the recording medium having a first area in which a video file or an audio file is stored,
the video file or the audio file including a plurality of extents,
the video file or the audio file including an object and an unrecorded area which allows new-video data or audio data to be
recorded,
the unrecorded area being managed as one of the extents,
the one of the extents corresponding to a block,
the object having object units,
each of the object units containing video packs, audio packs and one begin pack,
each of the video packs and the audio packs having predetermined size, and
the begin pack including recording time information of each of the object units;
a second area in which a management file is stored,
the management file including video management information, the video management information having program chain information,
the program chain information containing cell information, and
the cell information representing a presentation period of the object; and
a third area in which file management information is stored,
the file management information including a file entry,
the file entry specifying a location of the video file or the audio file containing the unrecorded area,
the file entry including a short allocation descriptor having length information of an extent and position information of
the extent,
logical blocks and logical sectors being assigned on the medium,
the logical sectors being assigned logical sector numbers, the capacity of each of the logical sectors being 2048 bytes,
the length of the logical block being equal to the length of the logical sector,
the logical blocks being assigned logical block numbers, and
a volume recognition sequence included in the file system, including a partition descriptor related to partition, the logical
sector numbers being assigned to the area of the partition descriptor but logical block numbers being not assigned,
the reproducing method comprising:
reading the video management information; and
accessing the video file or the audio file and reproducing data included in the video file or the audio file, based on the
read video management information.
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