Patent ID: 7221848

Claim:
A data recording and reproducing apparatus comprising: a plurality of RAID for recording and/or reproducing data containing video and/or audio data, each RAID having a plurality of HDD and a LAN interface; an error-correcting RAID for recording and reproducing an error-correcting code, having a plurality of HDD and said LAN interface; and a plurality of input and output processing means connected to said plurality of RAID and said error-correcting RAID through said LAN for processing said data inputted from the outside to output processed data to said RAID in a time-division manner and which process said data outputted from said RAID in a time-division manner to output processed data to the outside, wherein said plurality of input and output processing means further includes: input processing means for dividing said data inputted from the outside to transfer divided data to said RAID, for generating an error-correcting code of said data, and for transferring said error-correcting code to said error-correcting RAID; and output processing means for correcting erroneous data by using said error-correcting code outputted from said error-correcting RAID, and for outputting error-corrected data to the outside if an error is detected from said data outputted from said RAID, wherein said error is detected based on status data, which includes a status of said data and said error-correcting code, that is returned from said RAID to one of the plurality of input and output processing means, and is then added to an error table that includes information regarding an error in the recording and/or reproducing of said data and error-correcting code, wherein an error is corrected and data is restored by transferring reproduction request commands from the input processing means to each of the RAIDs other than the RAID that has the error, and then using data blocks and parity data that is transferred to the input processing means after being produced each of the RAIDs other that the RAID that has the error to make restored data, and then transferring the restored data from the input processing means to the RAID that has the error.