Patent ID: 7630279
Filing Date: 2009-12-08
Classification: G11B

Abstract:
1. A method of a focus error signal adjustment in an optical disk device which records/plays a data on an optical disk by irradiating a laser beam on an optical disk, wherein the optical disk has an emboss data zone in which a control data of a type of the optical disk, a system of a format, and a data recording method is recorded and a rewritable data zone which enables a rewrite through a test record, and an emboss pit to which a CAPA (Complementary Allocated Pit Address) is allocated is formed in the rewritable data zone, and a method of a focus error signal adjustment comprises, a signal generation step which irradiates a laser beam on the optical disk, receives a laser beam reflected on the optical disk, and generates a focus error signal based on the received laser beam, and an amplitude adjustment step which adjusts an amplitude by increasing and decreasing the amplitude of a focus error signal obtained by carrying out the signal generation step in the emboss data zone, wherein an amplitude of the focus error signal, which is obtained by carrying out the amplitude adjustment step, is increased, and then the increased amplitude of the signal is applied to an amplitude of a focus error signal in the rewritable data zone, and consequently, a focus servo can be carried out without being affected by an emboss pit formed in the rewritable data zone.