Optical reading head inclination angle regulation method and device

A technology of an optical pickup head and an adjustment method, which is applied in the field of inclination adjustment of an optical pickup head, can solve problems such as reduced flatness of the optical disk surface, reduced quality of the disk read, and complicated sources of the optical disk, so as to improve the quality of the disk read and enhance the reading quality. The effect of disc ability

Active Publication Date: 2008-06-04
HANGZHOU HIKVISION DIGITAL TECH
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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.

Method used

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  • Optical reading head inclination angle regulation method and device
  • Optical reading head inclination angle regulation method and device
  • Optical reading head inclination angle regulation method and device

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Embodiment Construction

[0021] Please refer to FIG. 1 , which is a structure diagram of an optical disc drive in a preferred embodiment. The optical disc drive 10 includes an optical pick-up head 100 , a motor 120 , a motor controller 140 and a tilt adjustment device 160 . Wherein, the optical pick-up head 100 is used for reading data on the optical disc 200 by emitting and receiving light beams, and at the same time generating a focus error signal (Focus Error) by detecting changes of the received light beams. The motor 120 is used to drive the optical pick-up head 100 to move along the radial direction of the optical disc 200 , so that the optical pick-up head 100 reads data of different tracks on the optical disc 200 . The motor controller 140 is used to control the rotation of the motor 120 , thereby controlling the moving speed and direction of the optical pickup head 100 in the radial direction of the optical disc 200 . The tilt adjustment device 160 is used for receiving the focus error signal...

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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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/09G11B7/095G11B21/16
Inventor 陈瑛哲
Owner HANGZHOU HIKVISION DIGITAL TECH
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