Analog very large-scale integrated (VLSI) circuits that perform the selection process for attentive sensory processing are presented. These circuits use excitatory feedback in a winner-take-all computation to produce a hysteresis in the selection from one location to the next. They also use an inhibitory mechanism to disengage attention so that more than one stimulus is attended, even when the ...

We present a neuromorphic VLSI device which comprises hybrid analog/digital circuits for implementing networks of spiking neurons. Each neuron integrates input currents from a row of multiple analog synaptic circuit. The synapses integrate incoming spikes, and produce output currents which have temporal dynamics analogous to those of biological post synaptic currents. The VLSI device can be use...

Advances in nano-electronics VLSI manufacturing technology and the rapid downscaling of the size of logic circuits have made them more prone to errors. This has led to the need for fast circuit reliability evaluation of large logic circuits. In this paper a new method for reliability analysis of VLSI logic circuits based on a modified form of Mason’s rule is proposed. Utilizing matrix sparsity ...

Due to advent of Very Large Scale Integration (VLSI), mainly due to rapid advances in integration technologies the electronics industry has achieved a phenomenal growth over the last two decades. Various applications of VLSI circuits in high-performance computing, telecommunications, and consumer electronics has been expanding progressively, and at a very hasty pace. Steady advances in semi-con...

ADVANCED TIMING AND SYNCHRONIZATION METHODOLOGIES FOR DIGITAL VLSI INTEGRATED CIRCUITS

Timing Analysis and Optimization Techniques for VLSI Circuits

The continuous progress in semiconductor VLSI technologies during the past several decades has provided the opportunity of realizing real-time intelligent image processing systems such as image recognition, object tracking, motion recognition, etc. However, the traditional approach of running image processing algorithms on general purpose processors is not practical for building efficient syste...

in recent years, size of vlsi circuits is dramatically grown and layout generation of current circuits has become a dominant task in design flow. standard cell placement is an effective stage of physical design and quality of placement affects directly on the performance, power consumption and signal immunity of design. placement can be performed analytically or heuristically. analytical placer...

The established methodologies for studying computational complexity can be applied to the new problems posed by very large-scale integrated (VLSI) circuits. This thesis develops a “VLsI model of computation” and derives upper and lower bounds on the silicon area and time required to solve the problems of sorting and discrete Fourier transformation. In particular, the area A and time T taken by ...