Optical reading head inclination angle regulation method and device

Abstract

An obliquity adjusting method for an optical reading head comprises the following steps: recording the current focusing error signal generated from the innermost loop to outermost loop by the optical reading head; generating real obliquity adjusting parameter according to the current focusing error signal and the predefined initial obliquity adjusting parameter; storing the real obliquity adjusting parameter; adjusting the oblique angle of the optical reading head according to real obliquity adjusting parameter when reading the data on the optical disk and writing data into the optical disk. Therefore, the optical disk drive can read the data in the optical disk with different distortions in high quality. The invention further discloses an obliquity adjusting device of the optical reading head.

Description

technical field [0001] The invention relates to an optical disc drive, in particular to a method and device for adjusting the inclination of an optical pickup head of the optical disc drive. Background technique [0002] Based on the characteristics of large storage capacity and convenient storage of optical discs, optical disc drives and optical discs are widely used in people's work and life. [0003] An optical disc drive reads information on an optical disc or writes information to an optical disc through its internal optical pickup head. Generally, an optical disc drive includes a spindle motor that drives the optical disc to rotate, and a motor that drives the optical pick-up head to move along the radial direction of the optical disc to perform read / write operations on the optical disc. [0004] The main components of the optical pickup head of an optical disc drive include: laser diode, objective lens, photodetector, actuator, etc. Taking reading data on an optical...

AI Technical Summary

Problems solved by technology

[0006] However, the source of optical discs for ordinary users is complicated. Due to the quality problems or aging of the optical disc itself, the flatness of the optical disc surface may be reduced, and warping may occur, and the degree of warping of different optical discs is not the same.

In this way, the previously adjusted inclination angle of the optical reading head is no longer suitable for this type of disc, resulting in a decline in the quality of the disc, or even failure to read the disc.

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