Optical drive track-seeking system and method

Abstract

The CD driver track-seeking system comprises a cyclically-connected in turn digital signal processor, a step-by-step motor, an optical reading head and an analog signal processor. The signal processor has a single span-amount which has a current value. The motor is used for moving the optical reading head from primary position to aim position. The optical reading head is used for receiving the reflection light beam of the CD and converting the beam into analog electronic signals. The analog signal processor is used for converting the electronic signals into digital signals. The digital signalprocessor is used for analyzing the digital electronic signals to obtain the current position of the optical reading head, which is also used for computing the practical value of the single span-amount and correcting the current value using the practical value for next track-seeking operation. A CD track-seeking method is also disclosed.

Description

Optical disc drive tracking system and method technical field The invention relates to an optical disc drive, in particular to a tracking system and method for the optical disc drive. Background technique Optical drives use optical discs as storage media. A spiral track is formed on the recording surface of the optical disc. The optical disc drive uses an optical pick-up head to project a light beam onto the track to record information on the track, and the detection device inside the optical pick-up head can also detect the reflected light beam reflected back from the track to reproduce information on the track. Wherein, the optical pickup head can convert the reflected beam into an analog electronic signal. The analog electronic signal is converted into a digital electronic signal by an analog signal processor. After the digital electronic signal is processed and decoded by a digital signal processor, information about the position of the optical pickup head and its ...

AI Technical Summary

Problems solved by technology

As a result, the optical disc drive cannot perform fast seek operations

Images