发明授权
US06246659B1 Laser light power control method for recording on optical disk and laser diode driving circuit for optical disk recording device
有权
用于在光盘上记录的激光功率控制方法和用于光盘记录装置的激光二极管驱动电路
- 专利标题： Laser light power control method for recording on optical disk and laser diode driving circuit for optical disk recording device
- 专利标题（中）： 用于在光盘上记录的激光功率控制方法和用于光盘记录装置的激光二极管驱动电路
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申请号： US09184372申请日： 1998-11-02
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公开(公告)号： US06246659B1公开(公告)日： 2001-06-12
- 发明人: Yoshiaki Suzuki , Kazuhiko Honda
- 申请人： Yoshiaki Suzuki , Kazuhiko Honda
- 优先权： JP9-319080 19971105
- 主分类号： G11B700
- IPC分类号： G11B700
摘要：
Recording pulses are each provided in a train of divided pulses, one of which has a greater pulse width than the other divided pulse. Laser light power emitted by a laser diode is detected at predetermined timing corresponding to the greater-width divided pulse, and an electric current for driving the laser diode is controlled in such a manner that the detected laser light power appropriately follows a predetermined laser power value. Thus, in the case where the recording pulses are each provided in a train of divided pulses, this arrangement can accurately detect the laser light power and thereby achieves high-precision control of the laser light power.