发明申请
- 专利标题: INFORMATION RECORDING AND REPRODUCING APPARATUS
- 专利标题(中): 信息记录和再现设备
-
申请号: US13618173申请日: 2012-09-14
-
公开(公告)号: US20130021892A1公开(公告)日: 2013-01-24
- 发明人: Hideaki Okano , Kazuo Watabe , Chikara Tanioka , Akihito Ogawa , Takashi Usui , Kazuaki Doi
- 申请人: Hideaki Okano , Kazuo Watabe , Chikara Tanioka , Akihito Ogawa , Takashi Usui , Kazuaki Doi
- 主分类号: G11B7/1374
- IPC分类号: G11B7/1374 ; G11B7/1376
摘要:
According to one embodiment, an information recording and reproducing apparatus including, a focus control module, an objective lens control module, a calculation module, and a tracking control module. If, detection the recording marks line, to focus a laser light of a second wavelength to the recording layer through an objective lens and to operation a recording layer tracking control using a tracking error signal taken out from a second reflected light and a laser light of a first wavelength to a track groove through the objective lens and to operation a guide layer tracking control to control the objective lens using a tracking error signal taken out from a first reflected light.
公开/授权文献
- US09064506B2 Writable information recording and reproducing apparatus 公开/授权日:2015-06-23
信息查询
IPC分类: