发明授权
- 专利标题： Gain controlling apparatus and method, information reproducing apparatus and method, and information recording apparatus and method
- 专利标题（中）： 增益控制装置和方法，信息再现装置和方法以及信息记录装置和方法
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申请号： US09443137申请日： 1999-11-19
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公开(公告)号： US06192011B1公开(公告)日： 2001-02-20
- 发明人: Kazuhiro Kiyoura , Toshiyuki Suzuki , Takeshi Matsumoto , Hiroshi Kitagawa , Takehiro Takada , Kazunori Saitoh
- 申请人： Kazuhiro Kiyoura , Toshiyuki Suzuki , Takeshi Matsumoto , Hiroshi Kitagawa , Takehiro Takada , Kazunori Saitoh
- 优先权： JP10-331443 19981120
- 主分类号： G11B700
- IPC分类号： G11B700
摘要：
A gain controlling apparatus is provided with: an adjusting device (6, 7, 8) for adjusting a gain of a generation signal, which is generated on the basis of a light reception signal obtained by receiving a reflection light of a light beam from an information recording medium (1); and a detecting device (21, 14, 16) for detecting whether or not the generation signal is generated and outputting a detection signal when the generation signal is generated. The gain controlling apparatus is also provided with a controlling device (18) for controlling the adjusting device to increase the gain by a predetermined value set in advance when the detection signal is not outputted by the detecting device.
信息查询
