Patent ID: 6741532
Filing Date: 2004-05-25
Classification: G11B

Abstract:
A method for generating a track count signal that represents track crossings on an optical storage medium, responsive to a light beam reflected off of the optical storage medium and detecting the reflected light beam with a detector, the method comprising:receiving a first quadrant signal, a second quadrant signal, a third quadrant signal, and a fourth quadrant signal from the detector; correlating the first quadrant signal, the second quadrant signal, the third quadrant signal, and the fourth quadrant signal to generate a first correlation signal; correlating the first quadrant signal, the second quadrant signal, the third quadrant signal, and the fourth quadrant signal to generate a second correlation signal; receiving an adjustable amplification value; and generating the track count signal based the first correlation signal, the second correlation signal, and the adjustable amplification value.