Abstract
Recent work has demonstrated that genetic programming
can automatically create both the topology (graphical
structure) and sizing (numerical component values) for
analog electrical circuits merely by specifying the
circuit's high level behaviour (e.g., its desired or
observed output, given its input). This automatic
synthesis of analog circuits is accomplished using only
tools for the analysis of circuits (e.g., a circuit
simulator) and without relying on any human know-how
concerning the synthesis of circuits. This paper
applies genetic programming to the automatic synthesis
of five analog and mixed analog-digital circuits that
duplicate the functionality of circuits patented after
January 1, 2000. The five automatically created
circuits read on some (but not all) of the elements of
various claims of the patents involved (and therefore
do not infringe). The described method can be used as
an automated invention machine either to produce
potentially patentable new circuits or to engineer
around existing patents.
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