| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical disk recording and playback device capable of performing stable tracking servo control even in an OPC (Optimum Power Control) area, and an OPC method.SOLUTION: The optical disk recording and playback device for performing recording on an optical disk having at least one guide layer having tracks and at least one recording layer having no track structure includes a first optical system for focusing a first laser beam on the guide layer, a second optical system for focusing a second laser beam divided into a plurality of parts on the recording layer, tracking error signal generation means for generating a plurality of tracking error signals from a signal of the second laser beam, and tracking error signal selection means for selecting a signal to be controlled from the tracking error signals, and forms a recording mark in an unrecorded OPC area after performing OPC processing for performing recording on the recording layer with optimum recording power. |
