Patent ID: 7174350
Filing Date: 2007-02-06
Classification: G11B,H04N

Abstract:
1. A data editing method comprising: a first data management step of managing stream data recorded on a predetermined recording medium in a unit of a file based on a file system; and a second data management step of performing management in a unit of a track based on a track managing data file which includes track management information formed from information elements each of which is information corresponding to one of tracks each of which is a data part within a range of the stream data in the file unit and indicates coordination with the stream data of the file unit and information elements each of which indicates a data position of one of the tracks in the stream data of the corresponding file unit; wherein said second data management step executes, where track division of dividing the stream data of the file unit to form a plurality of tracks or track erasure of erasing one of the tracks is to be performed, an updating process for contents of the track management information in the track managing data file in response to a manner of the track division or track erasure; and wherein said first data management step manages data such that an offset region is provided at the beginning of the stream data as one file and the entity of the stream data is disposed following the offset region; and when on-medium erasure of erasing a data part of a track unit of the stream data from the recording medium by rewriting of the file system is performed, if partial data of the data part of the track unit which is the object of the on-medium erasure remains in the data part for the data management unit of the file system including a last end position of the data part of the track unit which is an object of the on-medium erasure, manages the remaining partial data as the offset region.