VLSI implementation of synaptic weighting and summing in pulse coded neural-type cells.

Presents the hardware realization for synaptic weighting and summing using pulse-coded neural-type cells (NTCs). The basic information processing element (NTC) encodes the information into the form of pulse duty cycles using voltage-controlled resistors, for which a pulse duty cycle modulation technique is proposed. Summation is executed by a simple capacitor circuit as a current integrator. Layouts and measurements on a fabricated integrated design are included.