Invention Grant
- Patent Title: Optical disc device and recording method
- Patent Title (中): 光盘装置及记录方法
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Application No.: US13429467Application Date: 2012-03-26
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Publication No.: US08503273B2Publication Date: 2013-08-06
- Inventor: Takeshi Ogata
- Applicant: Takeshi Ogata
- Applicant Address: JP Tokyo
- Assignee: Hitachi Consumer Electronics Co., Ltd.
- Current Assignee: Hitachi Consumer Electronics Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2011-073875 20110330
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical disc device and a recording method is provided in which information can be additionally recorded on an optical disc, which has a servo layer and recording layers separately formed, by accurately correcting a relative angle between a light beam and the optical disc used in the previous recording without providing an area where recording is not performed while maintaining the stability of tracking servo. The above subject can be solved by studying with high accuracy the relative angle between the optical disc and the optical axis used in the previous recording by applying a radial tilt servo according to a signal from the recording layers with the tracking servo applied by the servo layer. Further, the additional recording can be performed stably by fixing the radial tilt at the previously studied angle when the recording is performed.
Public/Granted literature
- US20120250482A1 OPTICAL DISC DEVICE AND RECORDING METHOD Public/Granted day:2012-10-04
Information query
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