| 摘要 |
The invention discloses a device and a method for controlling the layer jumping of a pickup head, and the device includes a speed detector, a target speedometer, a first adder, a compensator, a gap balance signal calculator, and a second adder; wherein the speed detector receives a combined reflective light signal from a preamplifier to output a layer jumping speed signal; the target speedometer outputs a target layer jumping speed signal; the first adder adds the layer jumping speed signal and the target layer jumping speed signal and outputs the sum; the compensator receives and compensates the output from the first adder; the gap balance calculator receives a focus control signal to output a gap balance signal; the second adder adds a kickout/brake signal, the gap balance signal and the output of the compensator and outputs a control signal to a driver for controlling a pickup head.
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