We present the design, development and evaluation of a bi-directional inductive power transfer circuit for prototyping purposes in the watt-range. Our device does not require any configuration and is intended for the development of wearable and tangible systems. Our approach allows a bi-directional power flow without any change in the circuit, such that the same circuit can be used for charging and discharging a battery. The contribution of this work is an enabling technology for researchers and practitioners in the fields of Wearable Electronics, Ubiquitous Computing and Human-Computer Interaction interested in exploring new interactions powered by watt-range inductive links. It enables smaller battery sizes, and therefore lighter devices, as the power can be distributed in a way that has not been feasible before. We discuss the motivations, technical details and the workshop evaluating our inductive approach.

As the needs for information transfer and storage increase, data coding and compression become increasingly important in applications such as digital HDTV, telefax, ISDN and image data bases. The authors have developed a fractal image compression method and tested it with binary (black and white) images. The decoded results are similar to the original images. The compression ratios are found to be extremely high.>

A dynamically configurable combinatory logic array has been developed to be used as a Boolean neural network. The dynamical configuration facility enables hardware training using the simulated annealing method. The system is capable of adapting to a binary mapping task on the basis of given examples. The design target has been a cascadable VLSI chip.