CD machine capable of compensating rocking location signal and its method

Abstract

The invention discloses a compensable wobble addressing signal disk set and method in the optical read-write head and servo controller, wherein the optical read-write head contains laser diode, optical detector and object lens. The method comprises the following steps: the laser diode emits a light beam, which is focused to the disk by object lens to generate reflection light beam; the optical detector receives the reflection light beam and generates plural electronic signal; the servo controller receives the electronic signal and generates a deviation parameter; when the absolute value of deviation parameter is more than a fixed value, we moves the object lens according to the deviation parameter; the optical detector continues to receive reflection light beam and generates electronic signal until the absolute value of deviation parameter is not more than a fixed value; the optical detector receives the reflection light beam and generates plural correction electronic signal, which finally generates a wobble addressing signal according to the correction electronic signal.

Description

technical field [0001] The present invention relates to a method for compensating wobble addressing signals, and in particular to a method for compensating wobble addressing signals and an optical disk drive thereof. Background technique [0002] The way to store data on an optical disc is that there are many concave and convex tracks on the surface. The optical pickup head emits a laser beam to the above-mentioned track, and then receives the laser light reflected by the track to read and write the stored data. Generally speaking, the grooves and bumps on the optical disc are tracks with smooth edges. But now some specific optical disc specifications, such as CD-R, DVD-R or DVD-RW, etc., have a wave-like wobble track on the edge of the track, and the track is called a wobble addressing mark, and the read signal is called a wobble ( Wobble) addressing signal, which can define the address corresponding to the data of the optical disc. [0003] Therefore, in the process of r...

AI Technical Summary

Problems solved by technology

If the wobble addressing signal is unstable or the quality is not ideal, that is, the address corresponding to the data cannot be determined, and it is very easy to make mistakes during the process of reading and writing, which will cause the CD to burn.

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