Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2006-05-16
2006-05-16
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S026000, C326S027000
Reexamination Certificate
active
07046038
ABSTRACT:
The invention includes digital logic devices with extremely skewed trip points and reset circuitry for rapidly propagating signal edges. Embodiments of skewed logic devices in accordance with the present invention include inverters, buffers, NOR gates and NAND gates for rapidly propagating a selected “fast” edge of an input signal. Additional embodiments include pulse stretchers, memory devices, substrates, computer systems and methods incorporating the skewed logic devices of the present invention. Each embodiment of a skewed logic device of the present invention is configured to propagate either a fast rising edge or fast falling edge of an output signal, i.e., the “fast” edge, at rates comparable to those of domino logic. An advantage of the skewed logic devices of the present invention over conventional CMOS logic devices is rapid edge propagation. Additionally, virtually all of the input gate loading is devoted to the fast edge being propagated. Additionally, the reset networks, as disclosed herein, are buffered by at least two gates, thus reducing loading seen by the input or the output of the skewed logic device.
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Gans Dean D.
Porter John D.
Weber Larren G.
Lai Lam T.
TraskBritt
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