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Being the record method of recording the data where multiplex record method of the multilayer record type disk, it designates 1 layer of the playback methodological null multilayer record type disk of the multiplex
Being the record method of recording the data where multiplex record method of the multilayer record type disk, it designates 1 layer of the playback methodological null multilayer record type disk of the multiplex
PROBLEM TO BE SOLVED: To multiple-write AV data to be input in real time in a multilayer disk and a recording method.;SOLUTION: In the method of dividing data input from the outside in a multilayer recording disk in real time by predetermined amounts and recording the data as recording units in a main recording layer and a different position of a backup layer shifted by a predetermined amount from the main recording layer, a shifting amount is determined so as to satisfy "[time of the divided data input from the outside] [(time of recording the divided data in an innermost periphery of the main recording layer) + (access time from the innermost periphery to the different position of the backup layer) + (time of recording the divided data in the backup layer) + (access time from the recording end position of the backup layer to the recording end position of the main recording layer)]".;COPYRIGHT: (C)2009,JPO&INPIT
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