| 摘要 |
A servo apparatus for detecting a tracking error in an optical disc system comprises at least two servo error detecting parts for generating a servo error signal to determine whether there is a scratch or particle on the surface of an optical disc, or a vibration of the optical disc by any external cause. As a result, by determining whether it is a disregardabe scratch or particle on the disc surface and minimizing the possibility of errors in the servo apparatus, and in the case of a vibration of the disc by any external cause, by increasing a gain, a servo apparatus strong against a shock can be realized. |
