Differential signal comparator

Details Differential signal comparator Differential signal comparator

2007-11-13

2007-11-13

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

C455S574000, C375S340000

Reexamination Certificate

active

10858442

ABSTRACT:
A differential signal comparator includes an input circuit operative to provide an absolute input current difference value that is associated with the absolute difference of differential input signal levels, and a reference circuit operative to provide an absolute reference current difference value that is associated with the absolute difference of the reference signal levels. Current comparison of the absolute input current difference value with the absolute reference current difference value identify whether an input differential signal is bigger than the reference noise level and should be processed, or an input differential signal is smaller than the reference noise level and should not be processed.

REFERENCES:
patent: 5600899 (1997-02-01), Stevens et al.
patent: 6100814 (2000-08-01), Doyle
patent: 6560240 (2003-05-01), Borland et al.
patent: 6574482 (2003-06-01), Radomsky et al.
patent: 6831953 (2004-12-01), Porcino
patent: 6904102 (2005-06-01), Porcino
patent: 2005/0135290 (2005-06-01), Kluge et al.
Bhatt, Ajay V.; Creating a Third Generation I/O Interconnect; Desktop Architecture Labs, Intel Corporation; from www.express-lane.org; pp. 1-11.
“Co-pending U.S. Appl. No. 10/893,641, filed Jul. 16, 2004, Caruk, et al.”

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