发明名称 |
Optical disk apparatus and an optical disk recording and reproducing method |
摘要 |
An optical disk apparatus and an optical disk recording and reproducing method are provided in which an actuator can be controlled in stable fashion at the time of high-speed recording operation. Before performing the high-speed recording operation under servo control of average type, the learning of a servo signal of average type by application of a disturbance signal is carried out for both the servo control of continuous servo type for reproduction and the servo control of sample-and-hold type for low-speed recording operation. Based on the result of the learning, the gain is set for a servo loop of average servo type for high-speed recording operation.
|
申请公布号 |
US7366065(B2) |
申请公布日期 |
2008.04.29 |
申请号 |
US20040986169 |
申请日期 |
2004.11.12 |
申请人 |
HITACHI LTD.;HITACHI-LG DATA STORAGE, INC. |
发明人 |
TAKEDA NOBUHIRO;SUZUKI MOTOYUKI |
分类号 |
G11B7/00;G11B7/004;G11B7/09 |
主分类号 |
G11B7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|