Functional-input sequential circuit

Details Functional-input sequential circuit Functional-input sequential circuit

2009-08-14

2010-11-02

Le, Don P (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Sequential or with flip-flop

C326S119000, C326S056000

Reexamination Certificate

active

07825689

ABSTRACT:
An exemplary functional input sequential circuit for reducing the setup time of input signals. The functional sequential circuit includes a tri-state inverter having an input signal and two control signals. The transmission circuit receives a control signal from a combinational logic circuit that performs a logical operation on a second input signal and a clock signal. The output of the transmission circuit is coupled to a digital storage element. Further, a control circuit is coupled to the digital storage element in order to force a value on the digital storage element when no input signal is received from the transmission circuit. The control circuit is also controlled by the second input signal and a clock signal.

REFERENCES:
patent: 6522171 (2003-02-01), Hanson et al.
patent: 2002/0089352 (2002-07-01), Hanson et al.
patent: 2005/0093577 (2005-05-01), Nguyen et al.
patent: 2009/0085629 (2009-04-01), Harris et al.
patent: 2010/0061161 (2010-03-01), Jung et al.

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