发明授权
US5548570A Optical reproducing circuit having, a binarized signal pulse
compensation circuit
失效
具有二值化信号脉冲补偿电路的光学再现电路
- 专利标题: Optical reproducing circuit having, a binarized signal pulse compensation circuit
- 专利标题(中): 具有二值化信号脉冲补偿电路的光学再现电路
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申请号: US547313申请日: 1995-10-24
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公开(公告)号: US5548570A公开(公告)日: 1996-08-20
- 发明人: Hiroshige Hirajima , Takeshi Yamaguchi , Hiroshi Fuji
- 申请人: Hiroshige Hirajima , Takeshi Yamaguchi , Hiroshi Fuji
- 申请人地址: JPX Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JPX Osaka
- 优先权: JPX6-297060 19941130
- 主分类号: G11B7/00
- IPC分类号: G11B7/00 ; G11B7/005 ; G11B20/10 ; G11B20/14 ; G11B27/30 ; H03H15/00 ; H03H17/00 ; H03H21/00 ; H04B3/04 ; H04L25/03 ; H04L25/06
摘要:
An information reproducing circuit for reproducing digital information from a signal read by scanning an optical disk comprises an HPF 1 inputting the read signal and removing a low-frequency component from the input signal for outputting the same, an adder 2 inputting the signal outputted from the HPF 1 and adding a feedback signal having an amplitude matching with half that of the input signal to the input signal for outputting the same, a comparator 3 inputting the signal outputted from the adder 2 and converting the input signal to a binarized signal through a threshold value signal for outputting the binarized signal, a compensation circuit 5 inputting the binarized signal outputted from the comparator 3 and outputting the input signal while compensating the same through a compensation signal for compensating the low-frequency component of the read signal, and an LPF 6 inputting the signal outputted from the circuit 5 and removing a high-frequency component from the input signal for supplying the same to the adder 2 as the feedback signal.
公开/授权文献
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