Appeal No. 96-2614
Application 08/098,740
capacitor by a term given by the ratio between two
resistances to give a virtual capacitance value,
comprising:
(a) utilizing as said two resistances the ON
resistances of two field effect transistors of
different size;
(b) biasing at least one of said transistors with a
temperature dependent voltage for modifying the
relative ON-resistance of the transistor and said
ratio between ON resistances in function of
temperature, thus varying said virtual capacitance
value of the RC circuit in function of temperature
to compensate a variation of the value of the
integrated resistor of the RC circuit.
Opinion
The rejection of claims 1-22 cannot be sustained.
A reversal of the rejection on appeal should not be
construed as an affirmative indication that the appellants’
claims are patentable over prior art. We address only the
positions and rationale as set forth by the examiner and on
which the examiner’s rejection of the claims on appeal is
based.
In claims 1, 5 and 9, what is claimed is a capacitance
multiplier circuit. In claim 13, what is claimed is a method
for providing a large RC time constant. In claim 17, what is
claimed is a method for temperature compensating an integrated
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