| 摘要 |
An optical disk device and a focus draw-in method for the same, the device consists of a sum signal generator and a lens velocity control circuit for controlling a relative velocity of an optical disk and an objective lens based on a sum signal, for performing control so that a relative velocity of a recording surface of the optical disk and the objective lens may stably fall in a predetermined draw-in enabled range before control of the objective lens is switched to focus control by use of a focus error signal, to enable stabilizing a draw-in operation.
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