Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2007-10-09
2009-11-10
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S072000
Reexamination Certificate
active
07616029
ABSTRACT:
In one embodiment of the invention, a bias signal monitor has two signal comparators that compare two (power supply) voltages at two different bias points and a logic circuit that processes the outputs from the two signal monitors to generate a bias signal monitor output signal. The logic circuit implements hysteresis-based processing such that (1) if both signal comparators are active (indicating that a first voltage is greater than the second voltage relative to both bias points), then the monitor output is active, (2) if both signal comparators are inactive (indicating that the first voltage is not greater than the second voltage relative to either bias point), then the monitor output is inactive, and (3) if one signal comparator is active and the other is inactive, then the monitor output keeps its previous value. This hysteresis characteristic prevents relatively small oscillations between the voltages from changing the monitor output.
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Andrews William B.
Johnson Phillip
Schadt John
Scholz Harold
Lattice Semiconductor Corporation
Mendelsohn, Drucker & Associates P.C.
Tra Quan
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