Mr. of optical disc system. D / D. V. Determination device

摘要

The present invention relates to a CD / DVD discrimination apparatus for discriminating a CD / DVD for discriminating whether a disk 200 mounted on a deck is a CD or a DVD. The present invention relates to a focus search means for searching for a focus on a signal surface of a disk 200 ( 300, if two signal surfaces of the disk 200 are detected by the focus search process of the focus searching means 300, the disk 200 is recognized as a DVD, and if the disk detects one signal surface, the disk 200 is detected. And a control means 400 for recognizing the disk 200 as a CD.