Appeal No. 97-0951
Application 08/148,452
This is a decision on appeal under 35 U.S.C. § 134 from
the final rejection of claims 1-24.
We reverse.
BACKGROUND
The disclosed invention is directed to a slew rate
control circuit for controlling current turn-on or turn-off
rates, i.e., the "slew rates," and a voltage regulator for
providing dual reference voltages to the slew rate control
circuit.
Claim 1 is reproduced below.
1. A slew rate control circuit comprising:
a pair of inverter circuits;
each of said inverter circuits comprising first
and second transistors and being coupled between
current limiting transistors;
an output current switch comprising a pair of
switching transistors, each pair of said switching
transistors being coupled through a respective node to
a respective one of said inverter circuits; and
means, including a current regulator circuit, for
providing a set of current levels in the inverter
circuits to define the current available for charging
and discharging the capacitance on each respective
node.
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