| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical disk device capable of reducing the relative displacement between LPP and recording data pre-recorded on an information recording medium. SOLUTION: The optical disk device 1 is provided with an error arithmetic operation circuit 131 for detecting the position of an LPP part and recording data relative to each other, switching parts 139, 143, 145 and 149 for switching reference clock sources to change the frequency of a correction clock output from a PLL unit 141 to generate a data recording clock for a predetermined time based on the displacement direction and size of the relative positions of the LPP part and the recording data detected by the error arithmetic operation circuit, and a control unit 103 for changing the frequency of the correction clock for a predetermined time. COPYRIGHT: (C)2005,JPO&NCIPI
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