TRACKING CONTROL METHOD OF OPTICAL DISK DEVICE AND OPTICAL DISK DEVICE

PROBLEM TO BE SOLVED: To provide a tracking control method of an optical disk device capable of correcting off-set of a tracking error signal with high precision even when there are nonlinear characteristics e.g. wherein a shift amount of a position of an objective lens to a mechanically neutral position of the objective lens and an off-set amount of the tracking error signal are not proportional to each other, and to provide the optical disk device. SOLUTION: In the tracking control method of the optical disk device performing control by using the tracking error signal, an optical pickup 4 is provided with the objective lens, the shift amount of the position of the objective lens to the mechanically neutral position of the objective lens is estimated and a corrected signal of the tracking error signal is generated according to the estimated shift amount of the position of the objective lens by using any one of a plurality of correction functions. COPYRIGHT: (C)2007,JPO&INPIT