Appeal No. 96-1286
Application 08/259,360
The Rejections on Appeal
Claims 1-13 stand finally rejected under 35 U.S.C. § 103
as being unpatentable over "appellant’s admitted prior art on
pages 1-2 and Fig. 1 of the specification in view of Nissen et
al. or Fuss."
The Invention
The invention is directed to a method and apparatus for a
look-up table built on programmable architecture memory
elements. According to the appellants, the number of
programmable architecture elements required for a lookup-table
performing a number of specific multi-variable logic functions
is reduced, as compared to prior art lookup-table methods and
devices. Claims 1 and 9 are representative and are reproduced
below:
1. A method for designing a limited function look-up
table having a reduced number of programmable architecture
elements, the look-up table having a plurality of inputs, the
method comprising:
choosing a plurality of logic functions to be performed
by the look-up table;
determining an output state for each set of input
variables, each output state comprising an array of responses
of the plurality of logic functions to a particular set of
input variables;
forming groups of the output states, the groups of output
3
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