Signal detecting circuit

Details Signal detecting circuit Signal detecting circuit

2007-04-03

2007-04-03

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S064000

Reexamination Certificate

active

11202246

ABSTRACT:
A signal detecting circuit includes first and second differential amplifiers and a differential exclusive-OR circuit. The first differential amplifier is configured to amplify a differential input signal and to output first positive and inversion phase output signals. The second differential amplifier is configured to amplify the differential input signal and to output second positive and inversion phase output signals. A common mode voltage of the second positive and inversion phase signals is shifted. The differential exclusive-OR circuit is configured to compare the first positive phase output signal and the second inversion phase output signal, and the second positive phase output signal and the first inversion phase output signal, and to output an exclusive logical summation of the comparing results as a positive phase exclusive-OR output signal.

REFERENCES:
patent: 5087832 (1992-02-01), Matsunaga
patent: 6933752 (2005-08-01), Dreps et al.
patent: 3-55968 (1991-03-01), None

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