Apparatus having switchable servo gains and offsets for optical disk drive and method thereof

A method for switching servo gains and offsets for an optical disk drive, the method comprising:

• determining a working status of a pick-up head based upon a reflective ratio on the optical disk;
• and
• selectively processing a servo signal from the pick-up head in response to the determined working status of the pick-up head,
• wherein the servo signal is amplified by a first gain and a first offset when the pick-up head is in a tracking status and the servo signal is amplified by a second gain and a second offset, the second gain less than the first gain, when the pick-up head is in a seeking status.

An apparatus having switchable servo gains and offsets for an optical disk drive, comprising:

• means for determining the location of a pick-up head on an optical disk based upon a reflective ratio on the optical disk;
• means for outputting a signal after converting a servo signal by a first gain and a first offset if the pick-up head is in a tracking status;
• and
• means for outputting a normalized signal with respect to a level of the converted servo signal by multiplying the servo signal by a second gain and a second offset, the second gain less than the first gain, if the pick-up head is in a seeking status.