Invention Grant
US08238210B2 Optical recording medium, optical recording medium driving apparatus, and optical recording medium driving method 失效
光记录介质,光记录介质驱动装置和光记录介质驱动方法

Optical recording medium, optical recording medium driving apparatus, and optical recording medium driving method
Abstract:
An optical recording medium driving apparatus includes an optical pickup which irradiates first and second laser lights from one object lens with respect to an optical recording medium having a bulk layer and a tilt detection surface; a focus control portion that performs the focus control relative to each predetermined position of the optical recording medium in regard to each of the first and second laser lights; a tracking control portion that controls the position of the object lens to perform the tracking control of the first and second laser lights relative to the optical recording medium; and a tilt control portion.
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