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Publications associées (158)

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Error Tolerance Analysis of Deep Learning Hardware Using a Restricted Boltzmann Machine Toward Low-Power Memory Implementation

Alexandre Schmid

Remarkable hardware robustness of deep learning (DL) is revealed by error injection analyses performed using a custom hardware model implementing parallelized restricted Boltzmann machines (RBMs). RBMs in deep belief networks demonstrate robustness against ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Compact low-power recording architecture for multichannel acquisition of biological signals and method for compressing said biological signal data

Alexandre Schmid, Mahsa Shoaran, Mahdad Hosseini Kamal

The present invention relates to a method for compressing signal data of a plurality of biological signals captured by a plurality of implanted measurement devices. The present invention further relates to an implantable sensor configured to carry out said ...

2016

A 13.56MHz Active Rectifier with Digitally-Assisted and Delay Compensated Comparators for Biomedical Implantable Devices

Alexandre Schmid, Catherine Dehollain, Mohammad Javad Karimi

This paper presents the design of a 13.56 MHz full-wave active rectifier that utilizes digitally-assisted and delay compensated comparators for wirelessly powered biomedical implants. The proposed design employs delay compensation and digital assistance te ...

New York2023

A Relative Imaging CMOS Image Sensor for High Dynamic Range and High Frame-Rate Machine Vision Imaging Applications

Yusuf Leblebici, Alexandre Schmid, Vladan Popovic, Nikola Katic, Radisav Cojbasic

This paper proposes an unconventional image acquisition scheme for machine vision applications, based on detecting ratios of illumination (pixel) intensities. Detecting relative ratios enables capturing the scene features and patterns almost independently ...

Institute of Electrical and Electronics Engineers2015

Analysis of Integrator-Differentiator Transimpedance Amplifiers: Speed and Gain Tradeoff Introduced by Parasitic Capacitances

Alexandre Schmid, Matteo Dal Peraro, Mehdi Saberi

In this paper, the frequency behavior and stability of current recording systems employing continuous-time integrator-differentiator transimpedance amplifiers (TIAs) are analyzed. The proposed comprehensive analysis provides designers helpful design rules ...

Institute of Electrical and Electronics Engineers (IEEE)2025

Fault-Tolerant Logic Gates Using Neuromorphic CMOS Circuits

Yusuf Leblebici, Alexandre Schmid, Neil Joye

Fault-tolerant design methods for VLSI circuits, which have traditionally been addressed at system level, will not be adequate for future very-deep submicron CMOS devices where serious degradation of reliability is expected. Therefore, a new design approac ...

IEEE2007

A Methodology for Reliability Enhancement of Nanometer-Scale Digital Systems Based on A-Priori Functional Fault-Tolerance Analysis

Yusuf Leblebici, Alexandre Schmid, Milos Stanisavljevic

This paper presents a new approach for monitoring and estimating device reliability of nanometer-scale devices prior to fabrication. A four-layer architecture exhibiting a large immunity to permanent as well as random failures is used. A complete tool for ...

IFIP2005

Electrical Model of a Wireless mW-Power and Mbps-Data Transfer System Over a Single Pair of Coils

Alexandre Schmid

This paper proposes a system to transfer both mW-power and Mbps-data over an inductive link using a single pair of coils. The system is able to handle a wide range of loads by implementing a load adapter block that divides the operation into two phases: a ...

IEEE2022

Power Feedback Control Unit for Closed-Loop Wirelessly Powered Biomedical Implants

Alexandre Schmid, Catherine Dehollain, Mohammad Javad Karimi

Effective power management is crucial in designing wirelessly powered implants that have a long operational lifetime. It ensures that the received power is optimized for efficient operation and prevents damage caused by excessive or insufficient powering. ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023

Implantable IoT System for Closed-Loop Epilepsy Control based on Electrical Neuromodulation

Alexandre Schmid, Reza Ranjandish

A closed-loop system aiming at epilepsy control is proposed in this paper, in which electrical stimulation is triggered upon a decision aggragating different biological signatures of the seizure such as changes in the heart rate, blood flow in the brain, a ...

IEEE2018

Optimization of Nanoelectronic Systems Reliability under Massive Defect Density Using Distributed R-Fold Modular Redundancy

Yusuf Leblebici, Alexandre Schmid, Milos Stanisavljevic

The theoretical analysis of R-fold modular redundancy with distributed voters - distributed R-fold modular redundancy in terms of reliability is presented for the first time to the best of author's knowledge. This technique is compared in terms of resistan ...

IEEE Computer Soc Press, Customer Service Center, Po Box 3014, 10662 Los Vaqueros Circle, Los Alamitos, Ca 90720-1264 Usa2009

A Sub-mW Pulse-Based 5-bit Flash ADC with a Time-Domain Fully-Digital Reference Ladder

Yusuf Leblebici, Alexandre Schmid, Nikola Katic, Radisav Cojbasic

Journal article A sub-mW pulse-based 5-bit flash ADC with a time-domain fully-digital reference ladder: A Katic, Nikola; Cojbasic, Radisav; Schmid, Alexandre; Leblebici, Yusuf Published in: Microelectronics Journal (ISSN: 0026-2692), vol. 46, num. 12, ...

Elsevier2015

Editorial: Microelectronic Implants for Central and Peripheral Nervous System: Overview of Circuit and System Technology

Alexandre Schmid

FRONTIERS MEDIA SA2021

An Implantable High-Voltage Cortical Stimulator for Post-stroke Rehabilitation Enhancement with High-Current Driving Capacity

Alexandre Schmid, Mustafa Kilic

This paper presents a high-voltage, high-current implantable cortical stimulation integrated circuit aiming at supporting rehabilitation of patients suffering from stroke. In this context, a large area of the motor cortex needs to be stimulated, requiring ...

2015

Compressed look-up-table based real-time rectification hardware

Yusuf Leblebici, Alexandre Schmid, Abdulkadir Akin, Luis Manuel Gaemperle

Stereo image rectification is a pre-processing step of disparity estimation intended to remove image distortions and to enable stereo matching along an epipolar line. A real-time disparity estimation system needs to perform real-time rectification which re ...

2013

An Analysis of an ASK Demodulator With Dual Self-Biased Separated Voltages for Implantable Applications

Alexandre Schmid, Catherine Dehollain, Mohammad Javad Karimi, Yuxuan Zhou

A new structure of low-power demodulator named 'separated-Vb' amplitude shift keying (ASK) demodulator is proposed. The circuit is based on the switching behavior of the core digital shaper with different bias voltages, which improves its operation at low ...

2024

Comparing defect characterization techniques with non-radiative multiphonon charge trapping model AC analysis, trap-assisted-tunneling and charge pumping

Alexandre Schmid, Davide Garetto

The advantages and drawbacks of Capacitance vs Voltage (CV) characteristics, trap-assisted gate leakage tunneling and multi-frequency charge pumping techniques, have been brought out through an attentive investigation of oxide defects in CMOS technologies. ...

Springer Verlag2012

Motion Vector Estimation of Textureless Objects Exploiting Reaction-Diffusion Cellular Automata

Alexandre Schmid

Conventional motion estimation algorithms extract motion vectors from image sequences based on the image's local-brightness differences in consecutive images. Therefore, motion vectors are extracted along the moving edges formed by moving objects over thei ...

Old City Publishing Inc2016

Chopped-Anodic-Phase Charge Balancing Method for Electrical Stimulation

Alexandre Schmid, Reza Ranjandish

Providing safety of stimulation is a critical requirement in the design of biomedical electrical stimulators. Charge balancing circuits are required to guarantee safety of electrical stimulators. Chopped-anodic-phase (CAP) is one of the methods used for ch ...

IEEE2019

Omnidirectional sensor array system

Yusuf Leblebici, Pierre Vandergheynst, Alexandre Schmid, Laurent Jacques, Hossein Afshari, Luigi Bagnato

An omnidirectional sensor array system, for example a panoptic camera, comprising a plurality of sensors arranged on a support of predetermined shape to acquire data, wherein said sensors are directional and wherein each sensor is attached to a processing ...

2012