An actuator for controlling a voltage sensitivity and phase, and an optical pickup with it

摘要

The present invention relates to an optical pickup to be mounted according to, including a current feedback circuit for improving the sensitivity of the actuator voltage and current feedback circuit is such wonchiphwa the movable magnet-type actuator for the tilting movement of the optical pickup. An optical pickup having an actuator that can control the voltage sensitivity of the present invention, a) system driving integrated circuit to provide a tracking control signal, focus control signal, and a tilt control signal for driving the actuator; b) an actuator that is driven by receiving the sum signal and the difference signal, and the tracking control signal of the focus control signal and a tilt control signal; And c) a tracking control signal, focus control signal, and synthesizing a tilt control signal input of each of the corresponding voltage to the sum signal and the difference signal, and the tracking control signal of the focus control signal and a tilt control signal to the coil of the actuator, and the actuator by detecting a voltage applied to the coil, respectively, it is configured to include a current feedback signal which is re-fed back to the actuator to control the voltage sensitivity and phase parts. According to the invention, a current sensitivity is high, but the voltage sensitivity may improve the servo performance of the optical pickup actuator, by increasing the voltage sensitivity of the phase compensation falling movable magnet type actuator