DEFECT DETECTING METHOD AND SYSTEM FOR OPTICAL DISC

摘要

A defect detecting method for an optical disc accessed by an optical pickup head, including: (a) detecting if any defect exists in a detected region of the optical disc after data is written to the detected region; (b) while writing data to the optical disc, detecting if any defect exists on the optical disc according to reflection from the optical pickup head to thereby generate a first defect detecting result; and (c) switching from one of the steps (a) and (b) to the other of the steps (a) and (b).