发明申请
US20080159349A1 SEMICONDUCTOR LASER DRIVING DEVICE, OPTICAL HEAD, OPTICAL DISK DEVICE, AND SEMICONDUCTOR LASER DRIVING METHOD
失效
半导体激光器驱动器件，光学头，光盘装置和半导体激光器驱动方法
- 专利标题： SEMICONDUCTOR LASER DRIVING DEVICE, OPTICAL HEAD, OPTICAL DISK DEVICE, AND SEMICONDUCTOR LASER DRIVING METHOD
- 专利标题（中）： 半导体激光器驱动器件，光学头，光盘装置和半导体激光器驱动方法
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申请号： US11964329申请日： 2007-12-26
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公开(公告)号： US20080159349A1公开(公告)日： 2008-07-03
- 发明人: Nobuaki Kaji , Kazuo Watabe
- 申请人： Nobuaki Kaji , Kazuo Watabe
- 申请人地址： JP Tokyo
- 专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址： JP Tokyo
- 优先权： JP2006-353367 20061227
- 主分类号： H01S5/06
- IPC分类号： H01S5/06 ; G11B7/00
摘要：
A semiconductor laser driving device includes a current supply unit supplying current to a semiconductor laser; a first control unit controlling the current supply unit to supply a first current which is half or less of a lasing threshold of the semiconductor laser; and a second control unit controlling the current supply unit to supply a second current which is larger than the lasing threshold after a first time is passed from an edge of a clock signal.
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