Invention Grant
- Patent Title: Optical disc apparatus, optical information equipment with the optical disc apparatus, and focusing control LSI in the optical disc apparatus
- Patent Title (中): 光盘装置，具有光盘装置的光信息设备和聚焦控制LSI在光盘装置中
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Application No.: US11960973Application Date: 2007-12-20
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Publication No.: US07974167B2Publication Date: 2011-07-05
- Inventor: Kanji Wakabayashi , Yoshiaki Komma , Fumitomo Yamasaki , Toshiyasu Tanaka
- Applicant: Kanji Wakabayashi , Yoshiaki Komma , Fumitomo Yamasaki , Toshiyasu Tanaka
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2006-349168 20061226
- Main IPC: G11B7/002
- IPC: G11B7/002
Abstract:
In the present invention, at the time of pulling a focus on an information recording surface of a disc, a focus servo is first pulled in a disc surface of the disc, and with the servo in a settled state, a driving signal necessary for following surface wobble is stored, and a focus is pulled in the information recording surface of the disc based upon a signal superimposed with the driving signal and a focus search driving signal.
Public/Granted literature
Information query
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