Patent ID: 7215608

Claim:
An optical disk reproducing apparatus comprising: a pickup unit, which reads information coded on an optical disk and outputs an RF signal in response to a tracking driving signal; a tracking driver, which processes a tracking control signal and outputs the tracking driving signal; an RF amplifier, which processes the RF signal and outputs a tracking error signal; a first adder, which adds the input tracking error signal to an eccentricity compensation signal and outputs an added signal; a tracking servo, which processes an output signal of the first adder and outputs the tracking control signal; a disk rotation detection unit, which checks the number of pulses output from a spindle motor for rotating the optical disk and outputs a disk rotation detection signal; a frequency multiplier, which performs frequency multiplication on the disk rotation detection signal and outputs a sampling signal; and an eccentricity compensation unit, which outputs the eccentricity compensation signal extracted during a previous disk rotation cycle in a sampling signal cycle and extracts another eccentricity compensation signal, which is to be output during the next disk rotation cycle, using the output eccentricity compensation signal and the tracking error signal.