We present 3DTouch, a novel 3D wearable input device worn on the fingertip for 3D manipulation tasks. 3DTouch is designed to fill the missing gap of a 3D input device that is self-contained, mobile, and universally working across various 3D platforms. This paper presents a low-cost solution to designing and implementing such a device. Our approach relies on relative positioning technique using ...

Mobility and reduction of industrial activity time is one of the major requirements raised to modern systems of automation. One of the most effective ways of achievement of this purpose is vertical integration with use of wireless technologies. The lab set – model of vertical integration for data gathering from the intellectual Profibus РА sensor, Profibus DP data transmission, controllers conf...

We present a monolithic low-power, low-noise analog front-end electroencephalogram acquisition system. It draws only 500 A from a standard 9-V battery, making it suitable for use in portable systems. Although fabricated in a standard CMOS technology, by using current feedback techniques it achieves a common mode rejection ratio of 100 dB while the total input noise referred to input is kept bel...

This paper describes a method for collecting real-time energy consumption statistics for a custom wearable system. We describe an implementation of hardware and software which provides detailed trace data for every major subsystem of a wearable computer, including the microprocessor, memory, and I/O. This design is entirely selfcontained, requires no external instrumentation, and imposes low co...

Learning of mathematical concepts is a crucial point for high school students as well as students in science and engineering disciplines. In order to facilitate the learning of these abstract concepts we have developed a system to interactively explore these concepts based on a multi-touch table. The table is used as I/O device to additionally stimulate the haptic sense and to allow simple and ...

In this paper, a strongly stabilizing controller design method, proposed earlier for finite dimensional systems, is extended to a class of time delay systems. A special factorization of the plant is done first. Then, an infinite dimensional one-block H∞ control problem is solved using existing techniques. The solution of this H∞ control problem, together with the stable coprime factors of the p...

This paper presents a novel control method to improve the efficiency of low-voltage DC-DC converters at light loads. Pulse Width Modulation (PWM) converters have poor efficiencies at light loads, while pulse frequency modulation (PFM) control is more efficient for the same cases. Switching losses constitute a major portion of the total power loss at light loads. To decrease the switching losses...

The stability and performance of nonlinear and linear parameter varying (LPV) time delayed systems are analyzed. First, the input/output behavior of the time delay operator is bounded in the frequency domain by integral quadratic constraints (IQCs). A simple geometric interpretation is used to derive new IQCs for both constant and varying delays. Second, the performance of nonlinear and LPV del...

The basic building blocks in our muc system are reusable text handling tools which we have been developing and using for a number of years at the Language Technology Group. They are modular tools with stream input/output; each tool does a very speci c job, but can be combined with other tools in a unix pipeline. Di erent combinations of the same tools can thus be used in a pipeline for completi...