Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By phase
Reexamination Certificate
2011-04-05
2011-04-05
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By phase
C327S003000, C327S012000, C708S207000
Reexamination Certificate
active
07919991
ABSTRACT:
A comparator circuit is disclosed that determines whether a first binary value is greater than, equal to, and/or less than a second binary value without employing binary adder circuits, and therefore is simpler, occupies less circuit area, and consumes less power than conventional comparator circuits having binary adders. For some embodiments, the comparator circuit is capable of performing full comparison operations on two or more arbitrary binary values. The comparator circuit can be implemented in TCAM devices to perform regular expression search operations.
REFERENCES:
patent: 5295090 (1994-03-01), Hsieh et al.
patent: 5481206 (1996-01-01), New et al.
patent: 5751622 (1998-05-01), Purcell
patent: 6175513 (2001-01-01), Khanna
patent: 2004/0249873 (2004-12-01), Stark et al.
Donovan Lincoln
Mahamedi Paradice Kreisman LLP
NetLogic Microsystems, Inc.
Paradice III William L.
Poos John W
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