Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By pulse coincidence
Reexamination Certificate
2011-02-01
2011-02-01
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By pulse coincidence
C326S038000
Reexamination Certificate
active
07880507
ABSTRACT:
A circular edge detector on an integrated circuit including a plurality of edge detector cells, each of the plurality of edge detector cells having an input select block operable to receive a data signal and a previous cell signal and to generate a present cell signal, and a state capture block operably connected to receive the present cell signal. The present cell signal of each of the plurality of edge detector cells is provided to a next of the plurality of edge detector cells as the previous cell signal for the next of the plurality of edge detector cells, and the present cell signal from a last edge detector cell is provided to a first edge detector cell as the previous cell signal for the first edge detector cell.
REFERENCES:
patent: 4975640 (1990-12-01), Lipp
patent: 5592105 (1997-01-01), Cheung et al.
patent: 6178472 (2001-01-01), Carpenter et al.
Carpenter Gary D
Drake Alan J
Gebara Fadi H
Kao Jerry C
Kuang Jente B
Donovan Lincoln
Garg Rakesh
Garg Law Firm, PLLC
International Business Machines - Corporation
Poos John W
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