n this brief, conic section function neural network (CSFNN)
circuitry was designed for offline signature recognition. CSFNN is a unified
framework for multilayer perceptron (MLP) and radial basis function
(RBF) networks to make simultaneous use of advantages of both. The
CSFNN circuitry architecture was developed using a mixed mode circuit
implementation. The designed circuit system is problem independent.
Hence, the general purpose neural network circuit system could be applied
to various pattern recognition problems with different network sizes
on condition with the maximum network size of 16-16-8. In this brief,
CSFNN circuitry system has been applied to two different signature
recognition problems. CSFNN circuitry was trained with chip-in-the-loop
learning technique in order to compensate typical analog process vari-
ations. CSFNN hardware achieved highly comparable computational
performances with CSFNN software for nonlinear signature recognition
problems