Pierre-François Ruedi

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The objective of the IcyHeart project is to investigate and demonstrate a highly integrated and power-efficient microelectronic solution for remote monitoring of a subject’s electrocardiogram (ECG) signals. A complete System-on-a-Chip (SoC) is being developed that embarks on a single chip an ultralow-power signal acquisition front-end with(More)
Planar bulk CMOS in subthreshold operation allows an important reduction of the power consumption. This can lead the way to new ultra low-power applications with autonomous devices supplied by energy harvesting techniques. However, subthreshold circuits are more sensitive to threshold voltage variations and require new layout optimizations. We propose a(More)
This paper presents a novel sensor front-end circuit that addresses the issues of 1/f noise and distortion in a unique way by using canceling techniques. The proposed front-end is a fully differential transimpedance amplifier (TIA) targeted for current mode electrochemical biosensing applications. In this paper, we discuss the architecture of this canceling(More)
The requirements for wearables and portable medical devices present a number of challenges in terms of integration, autonomy and connectivity, and demand a careful co-design of hardware and software to reach optimum performance. This paper addresses these challenges by way of some recent examples of ASICs designed for ECG, EIT (Electrical Impedance(More)
We report the case of a 77-year-old man who presented with a polypoid tumor in the distal urethra. It was excised, and a histological diagnosis of malignant melanoma was made. The patient had no history of previous cutaneous biopsies or suspicious pigmented lesions; therefore, the melanoma was considered to be primary in the urethra. The patient declined(More)
A low cost autonomous vision system for realtime applications in natural environments has been realized. It encompasses a 160 by 128 pixel 120 dB dynamic range vision sensor performing contrast magnitude and direction computation at the pixel level [1], a BF 533 BlackFin processor, memory and a low data rate RF link usable to communicate the high level(More)
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