Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1995-10-24
1996-08-20
Hindi, Nabil Z.
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
369124, 369 47, G11B 700
Patent
active
055485707
ABSTRACT:
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.
REFERENCES:
patent: 5416641 (1995-05-01), Minakawa
Fuji Hiroshi
Hirajima Hiroshige
Yamaguchi Takeshi
Hindi Nabil Z.
Sharp Kabushiki Kaisha
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