Patent ID: 7581134

Claim:
An optical disc recorder, comprising: a recording means to record data with irradiating light beams on an optical disk; and a recording control means which controls recording of data into the optical disk with the recording means in a recordable form in compliance with UDF (Universal Disk Format), wherein the recording control means has a file writing means to write a data file composed of one group of data into the optical disk and a file management data writing means to write a file management data to manage writing positions of the data file; when writing of data which constitute the data file is failed, the file writing means rewrites a data block or a data of predetermined capacity including the data at another position on the optical disc, and the file management data writing means writes a file management data corresponding to the rewritten data block or data file; wherein when the file writing means writes a user data file composed of a user data used by a user, the file writing means writes a control data file composed of a control data to control the user data in the user data file additionally, and also writes the user data file and the control data file with dividing into data blocks of predetermined capacity; and wherein when writing of a data block constituting a user data file and a control data file is failed, the file writing means rewrites the data block in an area just behind an ECC (Error Correcting Code) boundary and repeats this rewriting until this writing of that data block is succeeded.