Appeal No. 96-1413
Application 08/134,798
Appellants have appealed to the Board from the examiner’s
final rejection of claims 1 to 10, which constitute all the
claims in the application.
Representative claim 1 is reproduced below:
1. A method of designing the layout of milliwave and
microwave integrated circuits using a computer aided design
system comprising:
displaying each a plurality of kinds of lumped circuit
elements and distributed constant transmission lines for an
integrated circuit on a cathode ray tube display as respective
closed drawing objects, each closed drawing object having an
area and dimension representing electrical data and edges for
overlapping respective edges of other drawing objects to
establish electrical connections between respective lumped
circuit elements and transmission lines represented by
corresponding drawing objects;
connecting the closed drawing objects displayed on the
cathode ray tube display by overlapping the edges but not the
areas of respective pairs of a plurality of the closed drawing
objects to produce a virtual integrated circuit having the
circuit construction of the integrated circuit; and
performing logical operations on the drawing objects of
the virtual integrated circuit according to a design rule
defined in accordance with a production process for producing
the integrated circuit to produce at least one mask pattern
for manufacturing the integrated circuit.
The following references are relied on by the examiner:
Chao et al. (Chao) 5,031,111 Jul. 09, 1991
2
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