发明名称 |
Optical reproducing circuit having, a binarized signal pulse compensation circuit |
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.
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申请公布号 |
US5548570(A) |
申请公布日期 |
1996.08.20 |
申请号 |
US19950547313 |
申请日期 |
1995.10.24 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
HIRAJIMA, HIROSHIGE;YAMAGUCHI, TAKESHI;FUJI, HIROSHI |
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;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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