Electronic digital logic circuitry – Tri-state
Reexamination Certificate
2007-08-21
2007-08-21
Le, Don (Department: 2819)
Electronic digital logic circuitry
Tri-state
C326S082000
Reexamination Certificate
active
10629008
ABSTRACT:
A tri-state detection circuit includes a first input port for receiving a tri-state input signal, a clock input port for receiving a clocking signal, a first output port, a second output port coupled to the first input port, a D-flip-flop and a buffer. The D-flip-flop has a D input, a clock input CLK, and a Q output. The D input is tied high. The clock input CLK is coupled to the first input port. The Q output is coupled to the first output port. The buffer has a buffer input and a buffer output. The buffer input is coupled to the clock input port. The buffer output is coupled to the clock input CLK of the D-flip-flop.
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Le Don
Lexmark International Inc.
Taylor & Aust PC
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