Tracking error signal compensation circuit and tracking error signal compensation method

A tracking error signal compensation device for removing an offset of a tracking error signal to be used for a tracking servo control for causing a radiation position of a light beam radiated by an optical pickup to follow to a track of a recording disk, the tracking error signal compensation device comprising:

• a track jump detection device that detects a track jump of the optical pickup;
• a detection device that detects the offset of the tracking error signal;
• and
• a removing device that removes the offset detected by the detection device from the tracking error signal,
• wherein the detection device and the removing device are carried out removal of the offset from the tracking error signal, when the track jump detection device detects the track jump of the optical pickup.

A method of removing an offset of a tracking error signal to be used for a tracking servo control for causing a radiation position of a light beam radiated by an optical pickup to follow to a track of a recording disk, the method comprising the processes of:

• extracting a direct current component and a low frequency component whose frequency is lower than a reference frequency from the tracking error signal by a low pass filter, and generating a detection signal including the extracted direct current component and the extracted low frequency component;
• determining whether or not a frequency of the tracking error signal is lower than a reference frequency;
• generating a hold signal by holding the detection signal generated by the low pass filter, when it is determined in the determination process that the frequency of the tracking error signal is lower than the reference signal;
• detecting the offset of the tracking error signal by using the detection signal and the hold signal;
• and
• removing the detected offset from the tracking error signal.

A method of removing an offset of a tracking error signal to be used for a tracking servo control for causing a radiation position of a light beam radiated by an optical pickup to follow to a track of a recording disk, the method comprising the processes of:

• detecting a track jump of the optical pickup;
• detecting the offset of the tracking error signal, when the track jump is detected;
• and
• removing the detected offset from the tracking error signal.