Analog VLSI Implementation of Neural Systems

ISBN-13: 9781461289050 / Angielski / Miękka / 2011 / 250 str.

Carver Mead; Mohammed Ismail

Opis

This volume contains the proceedings of a workshop on Analog Integrated Neural Systems held May 8, 1989, in connection with the International Symposium on Circuits and Systems. The presentations were chosen to encompass the entire range of topics currently under study in this exciting new discipline. Stringent acceptance requirements were placed on contributions: (1) each description was required to include detailed characterization of a working chip, and (2) each design was not to have been published previously. In several cases, the status of the project was not known until a few weeks before the meeting date. As a result, some of the most recent innovative work in the field was presented. Because this discipline is evolving rapidly, each project is very much a work in progress. Authors were asked to devote considerable attention to the shortcomings of their designs, as well as to the notable successes they achieved. In this way, other workers can now avoid stumbling into the same traps, and evolution can proceed more rapidly (and less painfully). The chapters in this volume are presented in the same order as the corresponding presentations at the workshop. The first two chapters are concerned with fmding solutions to complex optimization problems under a predefmed set of constraints. The first chapter reports what is, to the best of our knowledge, the first neural-chip design. In each case, the physics of the underlying electronic medium is used to represent a cost function in a natural way, using only nearest-neighbor connectivity.

Spis treści

1. A Neural Processor for Maze Solving.- 2 Resistive Fuses: Analog Hardware for Detecting Discontinuities in Early Vision.- 3 CMOS Integration of Herault-Jutten Cells for Separation of Sources.- 4 Circuit Models of Sensory Transduction in the Cochlea.- 5 Issues in Analog VLSI and MOS Techniques for Neural Computing.- 6 Design and Fabrication of VLSI Components for a General Purpose Analog Neural Computer.- 7 A Chip that Focuses an Image on Itself.- 8 A Foveated Retina-Like Sensor Using CCD Technology.- 9 Cooperative Stereo Matching Using Static and Dynamic Image Features.- 10 Adaptive Retina.