Perception systems implemented in analog VLSI for real-time applications

We point out that analog VLSI can now be considered as the ideal medium to implement computational systems intended to carry out real time perceptive or even cognitive tasks that are not well handled by traditional computers. By exploiting the analog features of the transistors, only a few devices are needed to realise most of the elementary functions required to implement perceptive systems, resulting in very dense, sophisticated circuits and low power consumption. Elementary artificial retinas in silicon based on their biological counterparts have already been successfully used in industrial applications. Artificial cochleas and noses are also under development. This new enabling technology is of great interest over a wide range of industrial sectors, including robotics, automotive, surveillance and food industry.