Optical disk device eliminating offset of actuator and...

Details Optical disk device eliminating offset of actuator and... Optical disk device eliminating offset of actuator and...

G - Physics

11

B

352/32.21

G11B 7/09 (2006.01) G11B 7/095 (2006.01) H01R 13/11 (2006.01)

Patent

CA 2023338

An optical disk device for eliminating an offset of actuator which controls a fine adjustment of a tracking control. In the device, in an offset measuring mode, an electric drive current of the actuator is changed and the drive current is stored and held when a detection output at a neutral position in a position detector of the actuator is obtained. Then, in a usual operation mode, the obtained offset current is constantly supplied as the drive current of the actuator, whereby a spring force is cancelled and an offset of the tracking error signal is eliminated.

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