Data control apparatus, data backup apparatus, and recording medium

摘要

A data control apparatus includes: a separating unit for separating material data included in original video and audio files into a used portion and an unused portion, based on editing information indicating the used portion of the material data in the video and audio files, and generating first data including only the used portion and second data including only the unused portion; a connection information generation unit for generating connection information associating information about positions of the first data and the second data in the original video and audio files with information about positions of the first data and the second data on an external recording medium; and a formatting unit for arranging the first data, the second data, the connection information, and the editing information in a predetermined order, and outputting, as backup data, the first data, the second data, the connection information, and the editing information.

主权项

1. A data control apparatus that restores original video and audio files from backup data which is read from an external recording medium,
wherein the external recording medium stores the backup data, the backup data includes first data including only a used portion of material data included in the original video and audio files, second data including only an unused portion of the material data, editing information indicating the used portion of the material data in the original video and audio files, and connection information associating information about positions of the first data and the second data in the original video and audio files with information about positions of the first data and the second data on the external recording medium, the data control apparatus comprising: a format extraction unit operable to separate the backup data which is read from the external recording medium into the first data, the second data, the editing information, and the connection information; a connection information decoder unit operable to decode the separated connection information; and a restoring unit operable to restore the original video and audio files by combining the used portion and the unused portion of the material data included in the first data and the second data in accordance with the decoded connection information.