Laboratoire TIMA


Best Presentation and Paper Award at JNRSE 2017 conference (Lyon, FRANCE)

Project: Best Presentation and Paper Award at JNRSE 2017 (7èmes Journées Nationales sur la Récupération et le Stockage d'Energie)

Title: "Modeling and operating temperature tuning of a thermally activated piezoelectric generator"

Authors: Adrian Rendon-Hernandez and Skandar Basrour

Abstract: This paper deals with the finite element model of a thermally activated piezoelectric generator. Furthermore, it presents an experimentally validated temperature tuning technique based on the gap distance of the triggering system. The working principle of proposed generator relies on the multi step thermal-to-mechanical-to-electrical energy conversion, overcoming inconveniences related to fast temporal temperatura variations and large temperature differences for efficient operating of classical direct thermal energy conversion. Performance optimization can be done in the form of temperature span tuning by changing the gap distance. By increasing this parameter, it is possible to maximize the Energy up to 10 times. Experimental data suggests that output energy up to 67 μW is possible when optimal gap distance is set. This corresponds to a power density of 103 μWcm-3

May 9-10, 2017


Runner-up Best Paper Award in SBCCI 2016 conference (Belo Horizonte, BRAZIL)

Project: Runner-up Best Paper Award in lnternational Symposium on Integrated Circuits and Systems Design (SBCCI) 2016

Project: New Asynchronous Protocols for Enhancing Area and Throughput in Bundled-Data Pipelines

Authors: Jean Simatic (TIMA, CDSI), Abdelkarim Cherkaoui (TIMA, CDSI), Rodrigo Possamai Bastos (TIMA, CDSI), and Laurent Fesquet (TIMA, CDSI)

Abstract: This paper presents two new area-reduced controllers for bundled-data asynchronous pipelines in which the stages have long critical paths. The proposed protocols allow to reduce the number of required delay elements by using the falling edge of the asynchronous request to indicate data validity. For critical path lengths of 25 gates, the first presented scheme decreases the controller area by 48% and slightly increases the maximum throughput (2%) in comparison to a standard micropipeline implementation. The other more-concurrent scheme proposition leads to a 25% area reduction and a 40% improvement of the maximum pipeline throughput.

August 29 - September 3, 2016


Best Paper Award, student 2nd place at NEWCAS 2017 conference (Strasbourg, FRANCE)

Project: Best Paper Award, student 2nd place at NEWCAS 2017

Title: On-the-fly and sub-gate-delay resolution TDC based on self-timed ring: A proof of concept.

Authors: Assia El-hadbi (TIMA, CDSI), Abdelkarim Cherkaoui (TIMA, CDSI), Oussama Elissati (INPT, STRS), Jean Simatic (TIMA, CDSI) and Laurent Fesquet (TIMA, CDSI)

Abstract: A new fully digital high resolution time-to-digital converter (TDC) based on a self-timed ring oscillator (STR) is presented. The proposed TDC can virtually achieve as fine as desired time resolution by simply increasing its number of stages thanks to the STR unique features. Moreover, the proposed technique allows on-the-fly time measurement on fast non-periodic signals. The TDC has been implemented using 28 nm FDSOI technology to provide a proof of concept of the proposed method. Simulation results point out

June 25- 28, 2017


Best Paper Award Nominee at SMACD 2017 conference (Taormina, ITALY)

Project: Best Paper Award Nominee in lnternational Conference on Synthesis, Modeling, Analysis, and Simulation Methods and Applications to Circuit Design (SMACD) 2017

Project: Importance of IR Drops on the Modeling of Laser-Induced Transient Faults

Authors: R.A. Camponogara Viera (TIMA, CDSI), P. Maurine (LIRMM, SYSMIC), J.M. Dutertre (ENSMSE, CMP), R. Possamai Bastos (TIMA, CDSI)

Abstract: Laser fault injection attacks induce transient faults by locally generating transient currents capable of temporarily flip the outputs of several gates. Many models used to simulate transient faults induced by laser consider several elements to better represent the effects of the laser on ICs. However, a laser-induced current between VDD and GND, which provokes significant IR drops, has been neglected. This paper highlights the importance of the induced IR drops on the modeling of laserinduced transient faults by using IR drop CAD tools. It also shows that laser-induced IR drops can be sufficiently strong to produce alone transient faults. As a result, the number of faults on a case-study circuit is accentuated whether IR drop effects are taken into account.

June 12-15, 2017


Dominique Borrione est membre d'honneur de la société informatique de France 2017

Project: Dominique Borrione

Professeur émérite à l’Université Grenoble Alpes, Dominique Borrione a été Professeur à l’Université de Provence, Marseille (Déc. 1983 – Août 1988) avant de muter à l’Université de Grenoble en 1988. Elle a assuré la direction des laboratoires IMAG-ARTEMIS (Jan. 1992-Déc 1995) et TIMA (janv 2007 à déc 2014) à Grenoble. Ses domaines d’expertise portent sur les langages de description et de simulation des systèmes matériels numériques, les méthodes formelles et semi-formelles pour la description, la spécification, la vérification, la synthèse de systèmes intégrés numériques.


Le 28 janvier 2017


Régis LEVEUGLE awarded for his tutorial at IDT 2016

Project: Régis LEVEUGLE awarded for his tutorial at International Design and Test symposium (IDT'2016 - Hammamet - TUNISIA - December 18-20, 2016)

December 18-20, 2016


Best Paper Award at WCO'2016

Project: Title: "Formulation and practical solution for the optimization of memory accesses in embedded vision systems" at 9th International Workshop on Computational Optimization (WCO'2016 - Gdansk, POLAND - September 11-14, 2016)
Authors: K. Hadj Salem, Y. Kieffer, S. Mancini

September 11-14, 2016


Raoul VELAZCO senior member IEEE

Project: Raoul VELAZCO senior member IEEE
IEEE Senior member grade is offered in recognition of professional standing and significant performance.


Frédéric PETROT: member of the jury delivering the EDAA Outstanding Dissertations

Project: Award for a PhD defended in 2015.