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Abstract Summary form only given as follows. Hybrid battery systems that contain both primary and secondary cells may offer compelling advantages for our smallest and most personal electronic devices. While either commodity alkaline cells or a Li-ion pack are used in most such applications today, small air-breathing power sources, such as metal-air cells and fuel cells, promise much higher specific energy and correspondingly longer runtimes. Unfortunately, in scenarios demanding high peak power, the high impedance of most such cells requires u...

Abstract Summary form only given as follows. Hybrid battery systems that contain both primary and secondary cells may offer compelling advantages for our smallest and most personal electronic devices. While either commodity alkaline cells or a Li-ion pack are used in most such applications today, small air-breathing power sources, such as metal-air cells and fuel cells, promise much higher specific energy and correspondingly longer runtimes. Unfortunately, in scenarios demanding high peak power, the high impedance of most such cells requires u...

The Itsy pocket computer is a powerful information device small enough to be comfortably worn or carried. It was created to support research in user interfaces and applications. A 32-bit, 200MHz microprocessor and 32 MB each of flash memory and DRAM made it the first small handheld able to run traditional desktop applications such as continuous speech recognition, speech synthesis, multimedia, and video games. Itsy offers fine-grain control of the hardware to support flexible power management and monitoring. Comprehensive expansion capability v...

Abstract A new design of power supply based on the idea of switched capacitors, as applied to pocket computer systems, is presented. This new type of power supply is inductorless and, consequently, suitable for hybridization and even monolithic integration. The new design is also based on distinguishing characteristics of pocket digital computer systems, in which a switched-capacitor converter can work well, since minimal regulation is required. The new device may enable the pocket computer system to be powered by only one battery, resulting i...

Abstract A new design of power supply based on the idea of switched capacitors, as applied to pocket computer systems, is presented. This new type of power supply is inductorless and, consequently, suitable for hybridization and even monolithic integration. The new design is also based on distinguishing characteristics of pocket digital computer systems, in which a switched-capacitor converter can work well, since minimal regulation is required. The new device may enable the pocket computer system to be powered by only one battery, resulting i...

Pfizer Global Research and Development, Research Technology Center, 620 Memorial Drive, Cambridge, MA 02139, USA.

Abstract EEG-based brain-computer interface (BCI) systems convert brain activity into control signals and have been developed for people with severe disabilities to improve their quality of life. A BCI system has to satisfy different demands depending on the application area. A laboratory PC based system allows the flexible design of multiple/single channel feature extraction, classification methods and experimental paradigms. The key advantage of a pocket PC based BCI approach is its small dimension and battery supply. Hence a mobile BCI syst...

PMID: 1812924 [PubMed - indexed for MEDLINE]

The Itsy pocket computer is a flexible research platform developed at Compaq Computer Corporation 's Western Research Laboratory (WRL). Its aim is to enable hardware and software research in pocket computing, including low-power hardware, power management, operating systems, wire-less networking, user interfaces, and applications. This document describes the architecture and the low-level programming model of the Itsy computer. Revision 1.0 The Itsy Pocket Computer Version 1.5 : User's Manual Contents Acknowledgements 1 Disclaimer 1 1 Introduct...

The Itsy pocket computer is a flexible research platform developed at Compaq Computer Corporation 's Western Research Laboratory (WRL). Its aim is to enable hardware and software research in pocket computing, including low-power hardware, power management, operating systems, wire-less networking, user interfaces, and applications. This document describes the architecture and the low-level programming model of the Itsy computer. Revision 1.0 The Itsy Pocket Computer Version 1.5 : User's Manual Contents Acknowledgements 1 Disclaimer 1 1 Introduct...