Method and apparatus for canceling noise from track cross signal, method for controlling optical disc drive, optical disc drive, and optical disc reproducing apparatus

A method of controlling an optical disc drive, the method comprising:

• (a) reading a track cross signal from an optical disc;
• (b) removing noise from the track cross signal by binarizing the read track cross signal with reference to the hysteresis set values that are determined according to a command speed for a tracking actuator;
• (c) removing glitch noise from the binarized track cross signal based on a predetermined time value;
• (d) measuring the speed of a pickup from the track cross signal whose noise is removed and that is binarized;
• and
• (e) providing a compensation value, which is determined according to an offset between the measured speed of the pickup and the command speed, to the tracking actuator.

A noise removing apparatus comprising:

• a controller configured to generate a command speed for a tracking actuator;
• a comparator configured to binarize a track cross signal read from an optical disc with reference to hysteresis set values determined according to the command speed;
• and
• a noise remover configured to remove glitch noise from the track cross signal that is binarized by the comparator.

An optical disc drive comprising:

• a controller configured to generate a command speed for a tracking actuator;
• a comparator configured to binarize a track cross signal read from an optical disc with reference to hysteresis set values determined according to the command speed;
• and
• a noise remover configured to remove glitch noise from the binarized track cross signal with reference to predetermined time values.

An optical disc drive comprising:

• a tracking actuator configured to move a pickup that irradiates light on an optical disc;
• a comparator configured to binarize a track cross signal read from the optical disc with reference to hysteresis set values that are determined based on a command speed for a tracking actuator;
• a noise remover configured to remove glitch noise from the binarized track cross signal with reference to a predetermined time value;
• and
• a controller configured to provide the command speed to the comparator, the controller for measuring the speed of a pickup from a signal output from the noise remover, obtain an offset, which is a compensation value, between the speed of the pickup and the command speed, and provide the compensation value to the tracking actuator.

A reproducing apparatus having an optical disc drive, comprising:

• a tracking actuator for moving a pickup that irradiates light on an optical disc;
• a comparator for removing noise from a track cross signal read from the optical disc drive by binarizing the track cross signal with reference to hysteresis set values determined according to a command speed for a tracking actuator;
• a noise remover for removing glitch noise from the binarized track cross signal with reference to predetermined time values;
• a controller for providing the command speed to the remover, the controller for measuring the speed of a pickup from a signal output from the noise remover, obtaining an offset, which is a compensation value, between the speed of the pickup and the command speed, providing the compensation value to the tracking actuator.