Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Slope control of leading or trailing edge of rectangular or...
Reexamination Certificate
2011-07-12
2011-07-12
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Slope control of leading or trailing edge of rectangular or...
Reexamination Certificate
active
07977989
ABSTRACT:
Disclosed is a circuit that adjusts a characteristic of a signal transmitted from a transmitter to a receiver over a communication channel (e.g., a wire, a backplane, etc.). The circuit includes a latch that receives the signal at a predetermined point in the circuit and samples a voltage of the signal many times after a threshold voltage is applied to the latch. The circuit also includes a processor that determines the characteristic of the signal when the sampled voltages indicate a transition point and that adjusts the threshold voltage when the sampled voltages do not indicate a transition point. The processor adjusts the characteristic of the signal by adjusting at least one of a current and a voltage of the transmitter when the characteristic of the signal is outside a predetermined range.
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Office Action dated Jul. 14, 2009 from U.S. Appl. No. 12/012,758.
Azimi Kouros
Mobin Mohammad S.
Sheets Gregory W.
Smith Lane A.
Agere Systems Inc.
Cargille David L.
Donovan Lincoln
Mendelsohn Steve
Mendelsohn, Drucker & Associates P.C.
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