Patent ID: 7716259
Filing Date: 2010-05-11
Classification: G11B

Abstract:
1. A file splitting apparatus for splitting a data file having coded moving image data arranged in groups of pictures recorded over a plurality of recording management regions arranged in the recording region of a recording medium, the apparatus comprising: a management region recording part detecting section for detecting a management region recording part including a file splitting position out of a plurality of management region recording parts of a plurality of recording management regions of the data file recorded in the recording region at the time of being split at a predetermined file splitting position; a management region recording part copying section for copying the management region recording part including the file splitting position as detected by the management region recording part detecting section to some other recording management region of the recording region; and a management information altering section for altering the management information of the data file to first management information for managing one of the split data files obtained by splitting the data file at the file splitting position and second management information for managing the other split data file; a determining section for determining whether a front side reference coded frame image data is to be decoded by referring to the coded frame image data in the front side groups of pictures relative to a boundary of two consecutive groups of pictures is found in the coded frame image data in a rear side groups of pictures relative to the boundary when the data file that is recorded in the recording region is split at the predetermined file splitting position on the boundary of the two consecutive group of pictures; and a setting section for setting the rear side group of images so as not to decode the front side reference coded frame image data when the determining section determines that the front side reference coded frame image data is found in the rear side groups of images, wherein the management information altering section is configured to alter the management information of the data file to the first management information of one of the split data files so as to make it contain the management region recording part including the file splitting position before the copying as part thereof and the second management information of the other split data file so as to make it contain the management region recording part including the copied file splitting position.