Optical reading/writing head location method for optical disk driver

Abstract

The present invention relates to a method for positioning optical reading / writing head of optical disk drive in optical disk guide-in zone, in which the optical reading / writing head can be moved along the internal slideway of optical disk drive to fetch the data stored on the optical disk. It includes the following steps: firstly, using first acting force to drive optical reading / writing head, and making it be moved to tail end from initial end of slideway and measuring the required time, then more using the above-mentioned first acting force to drive optical reading / writing head and retain a period of time, making the retaining time be greater than required time so as to ensure that the optical reading / writing head can be arrived to the tail end of the slideway, then using second acting force to draw back optical reading / writing head and retaining time to move it into guide-in zone.

Description

(1) Technical field [0001] The invention relates to a positioning method of an optical pickup head of an optical disc drive, in particular to a method for accurately moving the optical head of the optical disc drive to a lead-in area of ​​an optical disc. (2) Background technology [0002] With the rapid development of personal computers, computer peripheral products are also growing rapidly and changing with each passing day. Computer peripheral products such as hard disk drives, optical disc drives, scanners, printers, etc. have become necessary tools for modern offices, and with the reduction of product prices, computer peripheral products have also been popularized from offices to families. Among them, the optical disc drive is a very convenient and widely used storage medium at present, not only because the optical disc has a huge storage capacity, but also because the stored data can include music and video formats, and can be stored for a long time. Especially, with ...

AI Technical Summary

Problems solved by technology

First of all, it is necessary to make additional components such as the limit switch 18 and the elastic protrusion 18a inside the optical disc drive, resulting in an increase in the production cost of the overall optical disc drive.

Secondly, because the elastic protrusion 18a and the limit switch 18 are all mechanical hardware materials, as the use time increases, mechanical damage may occur due to long-term collision with the sliding base 14, and the elastic protrusion 18a may also be damaged. Gradually loses elasticity as the material ages

Like this, will make its detection and the function of positioning optical read-write head 12 of elastic lug 18a lose original precision

[0007] In addition, when the transmission motor drives the sliding base 14 with a relatively large force and hits the elastic lug 18a, it may also cause the sliding base 14 and the elastic lug 18a that bounce back to move backward due to the excessive force of the rebound. separate

In this case, the limit switch 18 will not be able to effectively judge the position of the optical read-write head 12, nor can it effectively move the optical read-write head 12 to an appropriate position, so the sliding base 14 can only be moved back by the transmission motor. pull, resulting in a longer time to read the disc

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