Optical receiver and discrimination-threshold generating method

Details Optical receiver and discrimination-threshold generating method Optical receiver and discrimination-threshold generating method

2005-09-28

2009-10-27

Tran, Dzung D (Department: 2613)

Optical communications

Receiver

Including postcompensation

C398S207000, C398S212000

Reexamination Certificate

active

07609980

ABSTRACT:
A first average detecting circuit detects an average of output signals of a pre-amplifying unit that controls an amplification gain based on a result of comparison between an output of the first average detecting circuit and a predetermined reference voltage. A discriminating circuit receives an output signal of the pre-amplifying unit as an input signal and performs a signal discrimination of the input signal based on a threshold. A second average detecting circuit detects an average of input signals to the discriminating circuit. The discriminating circuit receives an output of the second average detecting circuit as the threshold.

REFERENCES:
patent: 5844445 (1998-12-01), Takeyari
patent: 6169619 (2001-01-01), Ide
patent: 2001/0019441 (2001-09-01), Kogure et al.
patent: 2002/0153958 (2002-10-01), Ide
patent: 1-188143 (1989-07-01), None
patent: 1-286655 (1989-11-01), None
patent: 2723874 (1997-11-01), None
patent: 2814990 (1998-08-01), None

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