发明名称 |
Drive apparatus, drive method, information record medium having drive program, and information processing apparatus for drive |
摘要 |
A drive apparatus including: a superposition device which superposes a superposition signal on a drive signal for driving a light beam emission device that emits a light beam and which outputs the drive signal on which the superposition signal is superposed to the light beam emission device, a reference clock signal generation device which generates a reference clock signal, a frequency change device which changes a frequency of the superposition signal based on a quality index for indicating a quality of a reproduction signal that is obtained from a reflection light that is the light beam reflected on a record medium, a phase locked loop device which controls the changed frequency so as to be constant by a feedback method in use of the generated reference clock signal.
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申请公布号 |
US2005207295(A1) |
申请公布日期 |
2005.09.22 |
申请号 |
US20050078700 |
申请日期 |
2005.03.14 |
申请人 |
PIONEER CORPORATION |
发明人 |
FURUKAWA JUNICHI;TATEISHI KIYOSHI |
分类号 |
G11B7/004;G11B7/00;G11B7/125;H01S5/062;H01S5/065;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/004 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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