Appeal No. 2006-2382
Application 09/902,140
Although the specification discusses that conventional
simulation requires simulation of many cycles until a steady
state is approached (convergence) and that iterative methods are
much more efficient (specification, p. 3, lines 4-14), and while
Wong '643 mentions "steady state," "iterative" techniques, and
"errors," this is a discussion of the prior art and not the
claimed invention.
Wong '643 discloses a method for more quickly arriving at
the steady state of closed-loop self-regulated or periodically
driven piecewise-linear systems. The system is switched between
various topologies in a switching cycle (e.g., col. 1,
lines 50-52; col. 3, lines 18-22). The state of the system is
represented by state variables that collectively form a state
vector. The process iteratively repeats until the initial state
vector and the final state vector are within a user specified
tolerance (abstract). The examiner has not clearly explained,
nor do we find, how the process in Wong '643 involves carrying
out first and second DC-simulation runs and then comparing the
simulated values from the runs. The examiner has failed to make
out a prima facie case of anticipation. The rejection of
claims 1, 5, 7, and 13 is reversed.
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