OPTICAL DISC DEVICE AND A FOCUS BALANCE ADJUSTING METHOD, CAPABLE OF PREVENTING AN OPTICAL DISC AND A OBJECTIVE LENS FROM COLLIDING EACH OTHER BY OPTIMIZING A FOCUS BALANCE ADJUSTING VALUE

摘要

PURPOSE: An optical disc device and a focus balance adjusting method are provided so that by detecting a focus balance adjusting value for an optical disc and comparing it with a reference value and then controlling the focus balance adjusting value accordingly, the failure of a focus servo operation is prevented.;CONSTITUTION: A focus balance adjusting method comprises the following steps. A reference value for a focus balance adjusting is stored(S10). After detecting a focus balance adjusting value for an optical disc, it is compared with the reference value. Based on the comparison result, the detected focus balance adjusting value is changed into an any specific value or a faulty processing due to a focus failure is performed(S19). The reference value is classified and stored into a focus balance reference adjusting range, a high limit, and a low limit.;COPYRIGHT KIPO 2010