Patent ID: 8068396
Filing Date: 2011-11-29
Classification: G11B

Abstract:
1. A method for adjusting a tilt of an optical pick-up head, the method comprising the steps of: moving the optical pick-up head to a first location distant from an optical recording medium and focusing on to obtain a first focus control power and a first optimum tilt angle corresponding to the first location; moving the optical pick-up head to a second location distant from the optical recording medium and focusing on to obtain a second focus control power and a second optimum tilt angle corresponding to the second location; calculating an optical sensitivity according to the first optimum tilt angle, the second optimum tilt angle, the first focus control power and the second focus control power; and obtaining a focus control power corresponding to a specific location after the optical pick-up head is moved to the specific location, and calculating a corresponding optimum tilt angle according to the focus control power and the optical sensitivity so that the tilt of the optical pick-up head may be adjusted, wherein the optical sensitivity is represented as: wherein S represents the optical sensitivity, Tilt(