Patent ID: 8028004

Claim:
A data management system for managing a plurality of data files by a management file, the data management system comprising: a data input part for reading digital data continuously; a computer processing unit that processes a file generating part, the file generating part dividing the digital data so as to generate the plurality of data files, each data file having a size equal to or less than a predetermined file size, in parallel with the continuously reading of the digital data by the data input part; and a judging part for judging, when the digital data is divided by the file generating part, whether or not a newly generated data file generated by the file generating part can be managed by an existing management file, in accordance with a maximum data file number L, the maximum data file number L being the predetermined maximum number of data files that can be managed by one management file, and the number of data files being managed in the existing management file, wherein, in the case where the file generating part newly generates the plurality of data files by dividing the continuous digital data which is continuously input by the data input part and the number of the newly generated data files managed by the existing management file reaches the maximum data file number L when management information of first to Nth (N is a natural number) data files among the plurality of the data files are added into the existing management file, the judging part judges that the newly generated data file cannot be managed by the existing management file and generates the second management file, the data management system further comprises: a management information generating part for moving the management information of the first to Nth data files into the second management file and adding management information of (N+1)th and greater data files into the second management file.