Method of tilt compensation in an optical recording device

A method of tilt compensation in an optical recording device with a phase-locked loop circuit controlling speed of an optical disk, comprising:

• moving a tilt driver in at least one of a first and second direction from a central point if it is determined that a quantity of times the phase-locked loop circuit is unlocked is greater than a threshold value;
• detecting a jitter;
• determining whether the detected jitter is greater than a reference value;
• and
• compensating tilt if the jitter is greater than the reference value.

A method of tilt compensation in an optical recording device with a phase-locked loop circuit controlling speed of an optical disk, comprising:

• determining if the phase-locked loop circuit is unlocked;
• processing a first emergency if the phase-locked loop is unlocked;
• detecting a jitter;
• determining whether the detected jitter is greater than a reference value;
• and
• compensating tilt if the jitter is greater than the reference value wherein,
• if the tilt compensation has not yet been completed and a focus circuit is unlocked, a driving position of a tilt driver is reset to prevent the tilt driver from moving to a position where the
• focus circuit is unlocked, and the tilt driver is moved to a reset position.

A tilt compensating device in an apparatus having a phase-locked loop circuit controlling speed of an optical disk, the tilt compensating device comprising:

• a tilt driver moving in a first direction from a first point if it is determined that a quantity of times the phase-locked loop circuit is unlocked is greater than a threshold value;
• a jitter detector detecting a jitter;
• a controller determining whether the detected jitter is greater than a reference value;
• and
• a tilt driver integrated circuit compensating tilt if the jitter is greater than the reference value.