| 摘要 |
An optical disc player, which compensates for an eccentricity, is provided including: a spindle controller, a pickup, an RM amplifier, a focusing servo, a tracking servo and an eccentricity compensator. The spindle controller rotates an optical disc. The pickup has a focusing actuator and a tracking actuator and reads information on the optical disc. The RF amplifier detects and amplifies a focusing error signal and a tracking error signal from information on the optical disc obtained from the pickup. The focusing servo controls the focusing actuator in response to the amplified focusing error signal. The tracking servo outputs a tracking control signal in response to the amplified tracking error signal. The eccentricity compensator outputs a signal which compensates for the eccentricity of an optical disc in response to the output signal of the spindle controller, the amplified tracking error signal and the amplified tracking control signal. The eccentricity compensator detects the rotation period of the optical disc, produces a plurality of pulses using the detected rotation period, detects an eccentricity included in the amplified tracking error signal according to the plurality of generated pulses and generates a compensating signal for the detected eccentricity. The compensating signal automatically changes in relation to the playback speed of the optical disc.
|
