Patent ID: 7598988

Claim:
A data recording apparatus, comprising: a digital information data creating unit which creates digital information data by performing predetermined encoding and compression on continuous input information signals on time series; a storage medium which records the digital information data created by the digital information data creating unit, the storage medium being a main storage medium which divides the digital information data and records the divided digital information data; a sub storage medium which is freely detachable and copies and records the digital information data that is divided and recorded to the main storage medium, with a recording capacity smaller than that of the main storage medium; and a data recording control unit which divides the digital information data created by the digital information data creating unit into a plurality of data based on the unit of preset data capacity and records the data to the storage medium, wherein, upon dividing and recording the data to the main storage medium of the storage medium, the data recording control unit creates a recording file or folder name for dividing and recording the digital information data, data on the recording start time and recording end time of the digital information data for each recording file or folder name, and a file list containing information on the next recording file or folder name for recording the digital continuous information data, and wherein, upon dividing the digital information data and recording the divided digital information data to the main storage medium of the storage medium, the data recording control unit redundantly records data corresponding to a predetermined time of the head portion and the end portion of the divided and recorded digital information data, and sets the redundantly recorded information to the file list.