OPTICAL DISK DEVICE AND OPTICAL DISK RECORDING METHOD

摘要

PROBLEM TO BE SOLVED: To prevent the drop of a data transfer rate by accurately judging the necessity of trial writing to eliminate unnecessary trial writing.

SOLUTION: When reproducing recorded data to detect an error, a control circuit 9 compares the top level Vtop of the envelope of a reproduced signal with a predetermined defect detection threshold value Vth. If the result of the comparison shows Vtop>Vth, trial writing is executed. Trial writing is not executed in the case of VtopCOPYRIGHT: (C)2007,JPO&INPIT