| 摘要 |
According to an optical receiver of the present invention, an optical input signal is converted to an electric signal by a photoelectric element, and amplified by an amplifier. Thereafter, a band frequency is restricted by a low pass filter, and a peak value of a bottom level of the band-restricted pulse signal is detected. Then, an offset voltage is added to the detected value, thereby a compare reference value is generated. The output of the amplifier is compared with the compare reference voltage by a comparator, thereby data is discriminated.
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