Patent ID: 8165456
Filing Date: 2012-04-24
Classification: H04N

Abstract:
1. A data control apparatus that generates backup data of video and audio data having been edited, the data control apparatus comprising: a separation unit operable to input material data included in original video and audio files and editing information indicating a used portion of the material data in the original video and audio files, separate the material data into the used portion and an unused portion based on the editing information, and generate first data including only the used portion and second data including only the unused portion; a connection information generation unit operable to generate 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 when the first data and the second data are recorded to the external recording medium; a formatting unit operable to arrange the first data, the second data, the connection information, and the editing information in a predetermined order, and output, as backup data, the first data, the second data, the connection information, and the editing information.