Dissertations / Theses on the topic 'Conception de circuits logiques'
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Benmouhoub, Riad. "Méthodologies de conception pour multiprocesseurs sur circuits logiques programmables." Phd thesis, Paris 11, 2007. http://pastel.archives-ouvertes.fr/pastel-00002797.
Full textSchreiber, Jansch Ingrid Eleonora Courtois Bernard. "Conception de contrôleurs autotestables pour des hypothèses de pannes analytiques." S.l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00319479.
Full textAlhalabi, Rana. "Conception innovante de circuits logiques et mémoires en technologie CMOS/Magnétique." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT103.
Full textAfter many studies in recent decades, emerging non-volatile memory technologies have recently taken off in the semiconductor market. Their main objective is to replace flash and DRAM memories that reach their limits in terms of density, miniaturization, consumption or speed improvement. Among the emerging technologies, the MRAM memory has been identified as a strong candidate to become a leading storage technology for future memory applications. That is why we propose in the first part the design of hybrid CMOS / Magnetic circuits of LUT type (Look Up Table) in STT-MRAM technology (Spin Transfer Torque) aiming to realize a demonstrator. The full custom design from A to Z of innovative LUTs has been implemented. We propose in the second part the design of a full memory in SOT (Spin Orbit Torque) technology, for which a patent has been deposited. Finally, in the last part, this type of memory SOT-MRAM as well as others of type STT-MRAM were integrated in a volatile processor to evaluate the possible interests of these magnetic technologies STT and SOT in this type of circuit
Gentil, Marie-Hélène. "Conception et réalisation d'un planificateur de test hiérarchisé pour circuits logiques complexes." Montpellier 2, 1994. http://www.theses.fr/1994MON20035.
Full textLustrac, André de. "Conception de circuits Josephson ultrarapides : modélisation de la jonction tunnel Josephson ayant une constante de temps de l'ordre de la picoseconde : conception d'une famille logique à couplage direct adaptée aux jonctions Josephson picosecondes : application à un circuit additionneur et à un circuit multiplieur." Paris 11, 1986. http://www.theses.fr/1986PA112283.
Full textA Josephson tunnel junction model adapted to junction dynamics in the 1 picosecond range is derived from a series expansion of the time dependent Josephson current (Werthamer equation). The model consists of the terms of the adiabatic approximation and an added term depending on the phase and voltage across the junction which appears as an added capacitance. Analytical expressions of the junction characteristic times (turn of delay, rise time) are derived in the main junction load conditions. Then the principles of optimum design of direct coupled logic circuits implemented with these junctions are studied. It is found that circuits with heavily loaded junctions do not improve significantly if faster switching junctions are used. Therefore a new logic family (OR, AND, EXOR, Majority 2/3, NOT) is proposed which avoids heavily loaded junctions are used. The optimum designs, margins and logic delays of such circuits are determined. Two circuits of increasing complexity are finally studied using this logic family: a 2+2 bit adder (20 ps/bit) and a 4x4 bit multiplier (multiplication time: 100ps)
Zhao, Weisheng. "Conception, evaluation and development of the non-volatile programmable logic circuits using the Magnetic Tunnel Junction (MTJ)." Paris 11, 2008. http://www.theses.fr/2008PA112051.
Full textOver the past 20 years, programmable logic circuits have grown rapidly, particularly through the advantages presented by their reconfigurability, ease of use and low cost of their development process. However, the inherent volatility of CMOS technology based on charge storage is the source of inconvenient for these circuits, such as: data loss in case of power failure, the long latency to initialize the system at each (re) start-up and increasing high standby power due to the leakage currents. This last point has become a major challenge as the shrinking of transistors down to 90nm or below. In recent years, numerous emerging technologies have been proposed and explored to overcome these problems. Among them, Spintronics technology, is among the most efficient and practical solutions. This thesis focuses on the study, design, simulation and implementation of reconfigurable circuits combining CMOS technology and advanced non-volatile emerging technologies based on Nano Spintronics. The Magnetic Tunnel Junction (MTJ) was particularly studied based on three modes of writing such as Spin Transfer Torque (STT). The hybrid circuits were first designed and simulated electrically. They show great potential in terms of speed, non-volatility and power compared to conventional circuits. They would promise also new computing architectures and some advanced reconfiguration methods. Finally, a prototype was developed to demonstrate the behaviour and performance of these circuits
Tais-Lailhugue, Didier. "Étude et réalisation d'un outil de conception de systèmes logiques complexes." Montpellier 2, 1987. http://www.theses.fr/1987MON20013.
Full textGonçalves, Dos Santos Junior Gutemberg. "Conception robuste de circuits numériques à technologie nanométrique." Thesis, Paris, ENST, 2012. http://www.theses.fr/2012ENST0039/document.
Full textThe design of circuits to operate at critical environments, such as those used in control-command systems at nuclear power plants, is becoming a great challenge with the technology scaling. These circuits have to pass through a number of tests and analysis procedures in order to be qualified to operate. In case of nuclear power plants, safety is considered as a very high priority constraint, and circuits designed to operate under such critical environment must be in accordance with several technical standards such as the IEC 62566, the IEC 60987, and the IEC 61513. In such standards, reliability is treated as a main consideration, and methods to analyze and improve the circuit reliability are highly required. The present dissertation introduces some methods to analyze and to improve the reliability of circuits in order to facilitate their qualification according to the aforementioned technical standards. Concerning reliability analysis, we first present a fault-injection based tool used to assess the reliability of digital circuits. Next, we introduce a method to evaluate the reliability of circuits taking into account the ability of a given application to tolerate errors. Concerning reliability improvement techniques, first two different strategies to selectively harden a circuit are proposed. Finally, a method to automatically partition a TMR design based on a given reliability requirement is introduced
Bounouar, Mohamed Amine. "Transistors mono-électroniques double-grille : modélisation, conception & évaluation d'architectures logiques." Thèse, Université de Sherbrooke, 2013. http://hdl.handle.net/11143/6117.
Full textKasbari, Abed-Elhak. "Conception et caractérisation de circuits synchrones en logiques ECL pour les communications à 40 Gbits/s." Cergy-Pontoise, 2003. http://www.theses.fr/2003CERG0179.
Full textThis work is our contribution to the design and characterisation methods for very high speed integrated circuits. These circuits are essential to the long haul optical fiber communication systems. We present some specific design problems of high speed circuits. A design method for the emitter coupled logic (ECL) elementary blocks is developed. Furthermore, new CAD tools are introduced to minimise the switching times. The measurement setup has been improved to allow circuits characterisation at 40 Gbit/s. Integrated circuits have been designed and fabricated to validate this methods. Two different heterojunction bipolar transistor technologies have been used: a production-level SiGe technology and a high frequency performances InP technology. This work led to excellent experimental results. DFF circuits show full-rate clock operation beyond 40 Gbit/s and demultiplexers achieve 40 Gbit/s. Characterisation at a higher bit rate has been limited by the measurement setup
Wang, Gefei. "Conception et développement de nouveaux circuits logiques basés sur des spin transistor à effet de champ." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS056.
Full textThe development of Complementary Metal Oxide Semiconductor (CMOS) technology drives the revolution of the integrate circuits (IC) production. Each new CMOS technology generation is aimed at the fast and low-power operation which mostly benefits from the scaling with its dimensions. However, the scaling will be influenced by some fundamental physical limits of device switching since the CMOS technology steps into sub-10 nm generation. Researchers want to find other ways for addressing the physical limitation problem. Spintronics is one of the most promising fields for the concept of non-charge-based new IC applications. The spin-transfer torque magnetic random access memory (STT-MRAM) is one of the successful spintronics-based memory devices which is coming into the volume production stage. The related spin-based logic devices still need to be investigated. Our research is on the field of the spin field effect transistors (spin-FET), one of the fundamental spin-based logic devices. The main mechanism for realizing a spin-FET is controlling the spin of the electrons which can achieve the objective of power reduction. Moreover, as spin-based devices, the spin-FET can easily combine with spin-based storage elements such as magnetic tunnel junction (MTJ) to construct the “non-volatile logic” architecture with high-speed and low-power performance. Our focus in this thesis is to develop the compact model for spin-FET and to explore its application on logic design and non-volatile logic simulation. Firstly, we proposed the non-local geometry model for spin-FET to describe the behaviors of the electrons such as spin injection and detection, the spin angle phase shift induced by spin-orbit interaction. We programmed the non-local spin-FET model using Verilog-A language and validated it by comparing the simulation with the experimental result. In order to develop an electrical model for circuit design and simulation, we proposed the local geometry model for spin-FET based on the non-local spin-FET model. The investigated local spin-FET model can be used for logic design and transient simulation on the circuit design tool. Secondly, we proposed the multi-gate spin-FET model by improving the aforementioned model. In order to enhance the performance of the spin-FET, we cascaded the channel using a shared spin injection/detection structure. By designing different channel length, the multi-gate spin-FET can act as different logic gates. The performance of these logic gates is analyzed comparing with the conventional CMOS logic. Using the multi-gate spin-FET-based logic gates, we designed and simulated a number of the Boolean logic block. The logic block is demonstrated by the transient simulation result using the multi-gate spin-FET model. Finally, combing the spin-FET model and multi-gate spin-FET model with the storage element MTJ model, the “non-volatile logic” gates are proposed. Since the only pure spin signal can reach to the detection side of the spin-FET, the MTJ receives pure spin current for the spin transfer. In this case, the switching of the MTJ can be more effective compared with the conventional MTJ/CMOS structure. The performance comparison between hybrid MTJ/spin-FET structure and hybrid MTJ/CMOS structure are demonstrated by delay and critical current calculation which are derived from Landau-Lifshitz-Gilbert (LLG) equation. The transient simulation verifies the function of the MTJ/spin-FET based non-volatile logic
Fabiani, Erwan. "Implémentation automatique de réseaux réguliers sur circuits reconfigurables." Rennes 1, 2001. http://www.theses.fr/2001REN10139.
Full textKinvi-Boh, Ékué. "Conception de circuits en logique ternaire : de la caractérisation au niveau transistor à la modélisation architecturale." Rennes 1, 2006. http://www.theses.fr/2006REN1S077.
Full textMaazouzi, Zahir. "Conception des circuits programmables par la réécriture conditionnelle et étude des aspects vectoriels des fonctions booléennes." Orléans, 2001. http://www.theses.fr/2001ORLE2042.
Full textZounon, Arimyaou Abou. "Lignes d'interconnexions pour circuits logiques rapides : traitement temporel du couplage et des pertes." Paris 11, 1989. http://www.theses.fr/1989PA112330.
Full textThuau, Ghislaine Saucier Gabrièle. "Conception logique et topologique en technologie MOS." S.l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00308676.
Full textParvez, Husain. "Conception et exploration des architectures de circuits FPGA hétérogènes à base de structures matricielles et dédiées aux applications spécifiques." Paris 6, 2010. http://www.theses.fr/2010PA066501.
Full textBelgnaoui, Ibrahim. "Contribution au développement d'une méthode de conception optimisée d'opérateurs logiques VLSI : application à la technologie STL." Bordeaux 1, 1990. http://www.theses.fr/1990BOR10535.
Full textBounouar, Mohamed Amine. "Transistors mono-electroniques double-grille : Modélisation, conception and évaluation d’architectures logiques." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0068/document.
Full textIn this work, we have presented a physics-based analytical SET model for hybrid SET-CMOS circuit simulations. A realistic SET modeling approach has been used to provide a compact SET model that takes several conduction mechanisms into account and closely matches experimental SET characteristics. The model is implemented in Verilog-A language, and can provide suitable environment to simulate hybrid SET-CMOS architectures. We have presented logic circuit design technique based on double gate metallic SET at room temperature. We have also shown the flexibility that the second gate can bring in order to configure the SET into P-type and N-type. Given that the same device is utilized, the circuit design approach exhibits regularity of the logic gate that simplifies the design process and leads to reduce the increasing process variations. Afterwards, we have addressed a new Boolean logic family based on DG-SET. An evaluation of the performance metrics have been carried out to quantify SET technology at the circuit level and compared to advanced CMOS technology nodes. SET-based static memory was achieved and performances metrics have been discussed. At the architectural level, we have investigated both full DG-SET based arithmetic logic blocks (FA and ALU) and programmable logic circuits to emphasize the low power aspect of the technology. The extra power reduction of SETs based logic gates compared to the CMOS makes this technology much attractive for ultra-low power embedded applications. In this way, architectures based on SETs may offer a new computational paradigm with low power consumption and low voltage operation. We have also addressed a flexible logic design methodology based on DG-SET transmission gates. Unlike conventional design approach, the XOR / XNOR behavior can be efficiently implemented with only 4 transistors. Moreover, this approach allows obtaining reconfigurable XOR / XNOR gates by swapping the cell biasing. Given that the same device is utilized, the structure can be physically implemented and established in a regular manner. Finally, complex logic gates based on DG-SET transmission gates offer an improvement in terms of transistor device count and power consumption compared to standard complementary SETs implementations.Process variations are introduced through our model enabling then a statistical study to better estimate the SET-based circuit performances and robustness. SET features low power but limited operating frequency, i.e. the parasitics linked to the interconnects reduce the circuit operating frequency as the SET Ion current is limited to the nA range. In term of perspectives: i) detailed studying the impact on SET-based logic cells of process variation and random back ground charge ii) considering multi-level computational model and their associate architectures iii) investigating new computation paradigms (neuro-inspired architectures, quantum cellular automata) should be considered for future works
Bounouar, Mohamed Amine. "Transistors mono-electroniques double-grille : Modélisation, conception and évaluation d'architectures logiques." Phd thesis, INSA de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00967363.
Full textCrestani, Didier. "Contribution à la conception d'un planificateur de test : partitionnement et test hiérarchisé des parties combinatoires d'un circuit séquentiel synchrone." Montpellier 2, 1991. http://www.theses.fr/1991MON20290.
Full textGiraud, Bastien. "Apports et limitations des dispositifs multi-grilles sub-45 nm pour la conception des mémoires SRAM." Paris, ENST, 2008. http://www.theses.fr/2008ENST0020.
Full textWhere as bulk substrate topologies are nearing their physical limits, new structures such as double-gate transistors are being developed. The double-gate transistor provides excellent electrostatic channel control, a better Ion/Ioff ratio and a much smaller sensitivity to variations. Its gates can be connected or disconnected; moreover, it is possible for the contributions from the two gates to e equal or different. The rising density of integration and the emerging portable communication systems lead to the increasing size of the memory block and it power dissipation. Static Random Access Memories (SRAM) are today required to fulfill two conditions : firstly, raised performances in order to be able to process multimedia applications; and lower consumption in order to increase battery life. The present thesis aims to study and evaluate the potential of the double-gate transistors in the design of SRAM memories. This thesis puts forth new structures of memory cells and current -and voltage-sense amplifier circuits. The additional gate in the double-gate transistor used for the memory cells allows improvements with respect to most performance criteria. We are also able to avoid some of the classic trade-offs that exist between these criteria. These memory cells have high performance margins even in the presence of variations. The main contribution of this work in the field of sense amplifeir cricuits lies in the introduction of new entry points and new types of feedback, thereby improving the response time and the robustness at nominal and low supply voltages of 1,2V and 0,6V respectively
Amesrouy, Brahim. "Conception des circuits integres en logique multivaluee en mode courant." Paris 6, 1990. http://www.theses.fr/1990PA066016.
Full textDeng, Erya. "Conception et développement de circuits logiques de faible consommation et fiables basés sur des jonctions tunnel magnétiques à écriture par transfert de spin." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT012/document.
Full textWith the shrinking of CMOS (complementary metal oxide semi-conductor) technology, static and dynamic power increase dramatically and indeed has become one of the main challenges due to the increasing leakage current and long transfer distance between memory and logic chips. In the past decades, spintronics devices, such as spin transfer torque based magnetic tunnel junction (STT-MTJ), are widely investigated to overcome the static power issue thanks to their non-volatility. Hybrid logic-in-memory (LIM) architecture allows spintronics devices to be fabricated over the CMOS circuit plane, thereby reducing the transfer latency and the dynamic power dissipation. This thesis focuses on the design of hybrid MTJ/CMOS logic circuits and memories for low-power computing system.By using a compact MTJ model and the STMicroelectronics design kit for regular CMOS design, we investigate the hybrid MTJ/CMOS circuits for single-bit and multi-bit reading and writing. Optimization methods are also introduced to improve the reliability, which is extremely important for logic circuits where error correction blocks cannot be easily embedded without sacrificing their performances or adding extra area to the circuit. We extend the application of multi-context hybrid MTJ/CMOS structure to the memory design. Magnetic random access memory (MRAM) with simple peripheral circuits is designed.Based on the LIM concept, non-volatile logic/arithmetic circuits are designed to integrate MTJs not only as storage elements but also as logic operands. First, we design and theoretically analyze the non-volatile logic gates (NVLGs) including NOT, AND, OR and XOR. Then, 1-bit and 8-bit non-volatile full-adders (NVFAs), the basic elements for arithmetic operations, are proposed and compared with the traditional CMOS-based full-adder. The effect of CMOS transistor sizing and the MTJ parameters on the performances of NVFA is studied. Furthermore, we optimize the NVFA from two levels. From the structure-level, an ultra-high reliability voltage-mode sensing circuit is used to store the operand of NVFA. From the device-level, we propose 3-terminal MTJ switched by spin-Hall-assisted STT to replace the 2-terminal MTJ because of its smaller writing time and power consumption. Based on the NVLGs and NVFAs, other logic circuits can be built, for instance, non-volatile subtractor.Finally, non-volatile content addressable memory (NVCAM) is proposed. Two magnetic decoders aim at selecting a word line to be read or written and saving the corresponding search location in non-volatile state
Liot, Vincent. "Etude de l'effet d'histoire et optimisation des circuits logiques en technologie SOI partiellement désertée 130 et 65nm." Grenoble INPG, 2006. http://www.theses.fr/2006INPG0019.
Full textThe purpose of this work is to adress the design issues induced by the history effect in 0. 131. 1m and 65nm partially depleted SOI technolgies. A detailled study of the history effect demonstrates the limitations of classical methodoligies used to characterize gates propagation delays. A specifie computer-aided design tool, based on a smart transistor initialisation technique, is proposed for industrial PD-SOI standard cells libraries characterization. This solution allows to completely characterise worst and best cases propagation delays of an n-input gate with only two simulations, including the dispersion caused by a random behavior. This method allows to avoid timing errors in large-scale PD-SOI circuits with a negligible cost in term of performance. Moreover, the impact of the history effect on circuits performances and the main advantages of the PD-SOI technologies are discussed
Marcel, Jean Jacques. "Conception d'un circuit intégré d'adresses virtuelles, adresses physiques en Arseniure de Gallium." Lyon, INSA, 1995. http://www.theses.fr/1995ISAL0114.
Full text[The main objective of this thesis is the conception and realization of a specific integrated circuit. Its main motivation is the association of many up-to-date points : - situation within a huge project of a competitive super-calculator fabrication - development within a large and skill team - high speed circuit using a very specialized technology - recent software tools and associated methodology. Being a memory interface between the processors and the memory, the concepts of cache and virtual memory will be described. Gallium Arsenide will be investigated in order to show its necessity in the high speed application involved. The gate array will be described as it is the most complex used for this kind of technology and as it is the first fabricated at a commercial point of view. Conception is done via many interrelated phases so the methodology will be studied at a global manner first and then for our specific development. Specification then will be detailed in order to master the main needed functionalities. Test results and synthesis will be exposed at the end. ]
Wang, Zhoukun. "Conception et analyse comparative multi-objectif multi-technologies de famille de multiprocesseurs sur puce." Grenoble INPG, 2009. http://www.theses.fr/2009INPG0098.
Full textMultiprocessor system on chip (MPSOC) have strongly emerged in the past decade in communication, multimedia, networking and other embedded domains. This thesis addresses the design and the physical implementation of a Network on Chip (NoC) based MPSOC. We studied several aspects at different design stages: high level synthesis, architecture design, FPGA implementation, application evaluation and ASIC physical implementation. We try to analysis and find the impacts of these aspects for the MPSOC's final performance, power consumption and area cost. We implemented a family of NoC based multiprocessor(2-24) embedded system on FPGA. On the other hand we successfully implemented a set of algorithms on this platform, such as AES and TDES block cipher cryptographic algorithms. The network part of our architecture has been implemented on ASIC technology and has been explored with different timing constraints and different library categories of STmicroelectronics' 65nm/45nm technologies. The experimental results of ASIC and FPGA are compared, and we inducted the discuss of technology change impact on parallel programming
Lelong, Lionel. "Architecture SoC-FPGA pour la mesure temps réel par traitement d'images. Conception d'un système embarqué : imageur CMOS et circuit logique programmable." Saint-Etienne, 2005. http://www.theses.fr/2005STET4008.
Full textThe measurements method by PIV (Particle Image Velocimetry) is a technique to measure a motion vector field in a non-intrusive way and multi points. This technique uses the cross-correlation algorithm between two images to estimate the motion. The computation quantity required by this method limits its use to off-line processing with computer. The computers performances remain insufficient for this type of applications under constraint real time on high data rates. Within sight of these specific needs, the definition and the design of dedicated architectures seem to be an adequate solution to reach significant performances. The evolution of the integration levels allows the development of structures dedicated to image processing in real time at low prices. We propose a hardware implementation of cross-correlation algorithm adapted to internal architecture of FPGA with an aim of obtaining the real time PIV. In this thesis, we were interested in the architecture design of System on-a-Chip dedicated to physical measurements of parameters by real time image processing. This is a hierarchical and modular architecture dedicated to applications of “Dominant input data flow”. This hierarchical description allows a modification of number and/or nature of elements without architecture modifications. For one measurement computation, it needs 267 µs with a FPGA at the frequency of 50 MHz. To estimate the system performances, a CMOS image sensor was connected directly to the FPGA. That makes it possible to carry out a compact, dedicated and easily reuse system. An architecture made up of 5 computation modules allows satisfying the constraint of real time processing with this prototype
Perez, Renaud. "Contribution à la définition des spécifications d'un outil d'aide à la conception automatique de systèmes électroniques intégrés robustes." Montpellier 2, 2004. http://www.theses.fr/2004MON20215.
Full textBenhaddou, Mohamed. "Définition d'une méthodologie de conception de circuits intégrés numériques indépendante de la technologie : application à la conception d'un processeur flou." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL067N.
Full textSchreiber, Jansch Ingrid Eleonora. "Conception de contrôleurs autotestables pour des hypothèses de pannes analytiques." Phd thesis, Grenoble INPG, 1985. http://tel.archives-ouvertes.fr/tel-00319479.
Full textLallet, Julien Sentieys Olivier. "Mozaïc plate-forme générique de modélisation et de conception d'architectures reconfigurables dynamiquement /." Rennes : [s.n.], 2008. ftp://ftp.irisa.fr/techreports/theses/2008/lallet.pdf.
Full textChusseau, Laurent. "Contribution à la conception de circuits intégrés AsGa : modélisation du MESFET AsGa pour un simulateur de circuits ultrarapides : effets de propagation et de couplage dans les CI logiques BFL AsGa." Paris 11, 1985. http://www.theses.fr/1985PA112081.
Full textThis thesis studies the propagation and coupling effects in GaAs logic integrated circuits (BFL). A new time simulator MACPRO is used, which integrates the treatment of active logic gates and the non instantaneous propagation of signals on metal transmission lines including losses and coupling. The study includes a) the development of model of the GaAs MESFET well adapted to the analog simulation of ultra-fast logic circuits, b) the evaluation of signal degradations in BFL logic i. E. The influence of signal lines, power bus, coupling effects
Spataro, Anne. "Elaboration d'une nouvelle méthodologie de conception des circuits intégrés radiofréquences basée sur l'utilisation du temps de propagation des opérateurs logiques élémentaires : application à la synthèse d'oscillateurs CMOS polyphasés." Bordeaux 1, 2001. http://www.theses.fr/2001BOR12340.
Full textLallet, Julien. "Mozaïc : plate-forme générique de modélisation et de conception d’architectures reconfigurables dynamiquement." Phd thesis, Rennes 1, 2008. ftp://ftp.irisa.fr/techreports/theses/2008/lallet.pdf.
Full textThis thesis attempts to define an architectural description language for computer-aided design conception and exploration of dynamically reconfigurable architectures. This document presents the development framework Mozaïc which aims at designing dynamically reconfigurable architecture by automatic generation of the required hardware resources. In the first part of this document, we detail the dynamic reconfiguration concepts developed and used by Mozaïc. In a second part, we present the ADL xMAML which allows the description and the efficient exploration of the concepts presented in the first part. Parameters specific to dynamic reconfiguration have been added in ADL which is based on the MAML language. The last part of the document is dedicated to the presentation of the framework itself and especially on the dynamically reconfigurable implementation of a WCDMA decoder on both a FPGA architecture and on the DART architecture
Tanougast, Camel. "Méthodologie de partitionnement applicable aux systèmes sur puce à base de FPGA, pour l'implantation en reconfiguration dynamique d'algorithmes flot de données." Nancy 1, 2001. http://www.theses.fr/2001NAN10169.
Full textThe Run-Time Reconfiguration of FPGAs consist in the successive execution of a sequence of algorithms on the same device. In this thesis, we discuss the partitioning problem for dynamic reprogramability. We propose a method for the determination of the step numbers for a Run-Time-Reconfiguration implementation of a given time-constrained algorithm. This permits to enhance the silicon efficiency by reducing the reconfigurable array's area. Our method consist, by taking into account the used technology, in evaluating the algorithm area and operators execution time from data flow graph. This evaluation helps us to find a final partitioning. This method can be made in a heuristic way to adapt more precisely the partitioning. To validate our methodology, we have applied our approach on real time image processing algorithms. The performances like processing time and resources usage rate of the FPGA are described. Finally we conclude with suggestions for further work
Razafindraibe, Alin. "Analyse et amélioration de la logique double rail pour la conception de circuits sécurisés." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2006. http://tel.archives-ouvertes.fr/tel-00282762.
Full textGuiraudou, Pascal. "Conception et réalisation d'un simulateur logique et concurrent de fautes pour circuits intégrés VLSI." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb375981248.
Full textRazafindraibe, Hanitriniaina Mamitiana Alin. "Analyse et amélioration de la logique double rail pour la conception de circuits sécurisés." Montpellier 2, 2006. http://www.theses.fr/2006MON20117.
Full textChusseau, Laurent. "Contribution à la conception de circuits intégrés AsGa modélisation du MESFET AsGa et étude des effets de propagation et de couplage dans les CI logiques BFL AsGa, caractérisation en bruit des transistors hyperfréquence faible bruit AsGa." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37596748f.
Full textBouffard, Marc. "Conception, modélisation et simulation in silico d'un nanosystème biologique artificiel pour le diagnostic médical." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS302/document.
Full textThe medical diagnosis is traditionally done by examining the clinical symptoms and by searching in samples (blood, urine, biopsies, etc.) for the simultaneous presence (or absence) of biomarkers of the various pathologies considered by the doctor. The search for biomarkers is conducted using large equipments in a specialised laboratory; The results being communicated to the doctor, who will then interpret them by applying a medical diagnostic algorithm.We wanted to combine in a single device, for a given disease, the detection of its biomarkers and an implementation of the appropriate diagnostic algorithm. The presence or absence of a biomarker can be represented by a boolean variable, and the diagnostic algorithm by a complex boolean function whose value indicates the presence of the targeted disease. Our diagnostic device is an artificial biochemical nano-computer in which logical information is represented by metabolites and the computations performed by a synthetic enzymatic network. To build this computer, it has been necessary to establish a theoretical basis of enzymatic logical networks. We then used this theory to define what an enzymatic logic network is, and how it computes correctly the associated boolean function. For modularity and reusability reasons, we decided to design libraries of enzymatic logic gates that implement basic boolean operators, and then to assemble these building blocks to get the complete logic enzymatic network. So, I have designed and developed two software tools, NetGate and NetBuild, which will automatically perform these operations.NetGate creates libraries containing hundreds of enzymatic logic gates obtained from the metabolic networks of living organisms. Before that, it was necessary to manually analyse these metabolic networks in order to extract each logic gate.NetBuild uses a library of logic gates (for example created using NetGate) and assembles them to build circuits that compute a given boolean function. These circuits use specific metabolites for its inputs (for example the biomarkers of a pathology) and produce a readily detectable molecular species (using colorimetry for example)
Dandache, Abbas. "Conception de PLA CMOS." Phd thesis, Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37596962j.
Full textDelamotte, Pascal. "Conception et réalisation d'un circuit integré de filtrage." Paris 11, 1985. http://www.theses.fr/1985PA112297.
Full textBossuet, Lilian. "Exploration de l'Espace de Conception des Architectures Reconfigurables." Phd thesis, Université de Bretagne Sud, 2004. http://tel.archives-ouvertes.fr/tel-00012212.
Full textCette méthode intervient très tôt dans le flot de conception, ainsi dès les premières phases de spécification de l'application, les concepteurs peuvent définir une architecture adaptée pour leurs applications. La méthode d'exploration s'appuie principalement sur l'estimation de la répartition des communications dans l'architecture ainsi que sur le taux d'utilisation des ressources de l'architecture. Ces métriques permettent en effet d'orienter le processus d'exploration afin de minimiser la consommation de puissance de l'architecture puisque cette dernière est directement corrélée à ces deux métriques.
Les résultats obtenus montrent que notre méthode permet de converger rapidement vers une architecture efficace en ce qui concerne la consommation de puissance.
Lhairech, Ghizlane. "Low-power hight level synthesis for designing DSP applications on FPGA." Lorient, 2013. http://www.theses.fr/2013LORIS292.
Full textL’optimisation de la consommation est devenue un challenge des plus importants dans la conception des systèmes numériques. Bien que les FPGAs soient de plus en plus utilisés, ils sont toujours considérés comme inefficaces en termes de consommation comparés aux ASICs. Les concepteurs ont besoin d’un flot de synthèse dédié pour la conception à faible puissance sur FPGA. Nous avons identifié deux facteurs clés pour la conception à faible puissance des applications de traitement numériques, à savoir, la largeur des données et la fréquence de leurs traitements. Dans cette thèse, Les travaux présentés adressent la conception faible puissance à travers un flot de synthèse de haut niveau qui prend en compte la largeur des données et la hiérarchie. Ce flot permet de générer automatiquement des architectures bit-prés et des architectures synchrones à horloge multiples. La première approche prend en compte la largeur des données durant toutes les étapes de synthèse en utilisant des algorithmes dédiés. L’algorithme de « clustering » que nous proposons groupe les opérations en fonction de leurs caractéristiques temporelles. Notre algorithme d'ordonnancement repose sur des heuristiques dans lesquelles les opérations ordonnançables sont triées par ordre de priorité basée sur leur taille. L'algorithme d’assignation réalise un MWBM en minimisant la taille et le nombre de multiplexeurs. Dans la seconde approche nous utilisons la synthèse hiérarchique afin de générer automatiquement des architectures constituées de plusieurs blocs ayant leurs propre horloge et communicant de façon synchrone. Le facteur de réduction d’horloge ainsi que les opérations pouvant être ralenties sont définis soit par le concepteur sous forme d’appels de fonctions ou automatiquement à travers nos algorithmes de partitionnement. Dans les deux cas, nous proposons un modèle hiérarchique pour permettre l’intégration d’opérateur complexe dans le flot de synthèse de haut niveau. Notre approche vise à utiliser les connaissances de la structure du FPGA afin de diriger les techniques d'optimisation à haut niveau. De ce fait, l’optimisation de la largeur des données vise à minimiser l'activité du circuit et le nombre de fils utilisés. La hiérarchie permet de réduire le nombre de longs fils, ainsi que de diminuer la complexité de réseau de distribution d'horloge et d'utiliser des techniques de gèle d'horloge. L’architecture synchrone à horloge multiples vise à réduire la fréquence d’horloge et la complexité de l’arbre d'horloge. Les expériences ont été réalisées en utilisant le circuit FPGA Xilinx Virtex-5 et les résultats de mesure de puissance montrent que les approches proposées réalisent une réduction de puissance en moyenne de 25% pour les architectures bit-prés et de 13% pour les architectures synchrones à horloges multiples
Papadimitriou, Athanasios. "Modélisation au niveau RTL des attaques laser pour l'évaluation des circuits intégrés sécurisés et la conception de contremesures." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT041/document.
Full textMany aspects of our current life rely on the exchange of data through electronic media. Powerful encryption algorithms guarantee the security, privacy and authentication of these exchanges. Nevertheless, those algorithms are implemented in electronic devices that may be the target of attacks despite their proven robustness. Several means of attacking integrated circuits are reported in the literature (for instance analysis of the correlation between the processed data and power consumption). Among them, laser illumination of the device has been reported to be one important and effective mean to perform attacks. The principle is to illuminate the circuit by mean of a laser and then to induce an erroneous behavior.For instance, in so-called Differential Fault Analysis (DFA), an attacker can deduce the secret key used in the crypto-algorithms by comparing the faulty result and the correct one. Other types of attacks exist, also based on fault injection but not requiring a differential analysis; the safe error attacks or clocks attacks are such examples.The main goal of the PhD thesis was to provide efficient CAD tools to secure circuit designers in order to evaluate counter-measures against such laser attacks early in the design process. This thesis has been driven by two Grenoble INP laboratories: LCIS and TIMA. The work has been carried out in the frame of the collaborative ANR project LIESSE involving several other partners, including STMicroelectronics.A RT level model of laser effects has been developed, capable of emulating laser attacks. The fault model was used in order to evaluate several different secure cryptographic implementations through FPGA emulated fault injection campaigns. The injection campaigns were performed in collaboration with TIMA laboratory and they allowed to compare the results with other state of the art fault models. Furthermore, the approach was validated versus the layout of several circuits. The layout based validation allowed to quantify the effectiveness of the fault model to predict localized faults. Additionally, in collaboration with CMP (Centre Microélectronique de Provence) experimental laser fault injections has been performed on a state of the art STMicroelectronics IC and the results have been used for further validation of the fault model. Finally the validated fault model led to the development of an RTL (Register Transfer Level) countermeasure against laser attacks. The countermeasure was implemented and evaluated by fault injection campaigns according to the developed fault model, other state of the art fault models and versus layout information
Nemmour, Mohamed Anceau François. "Formalisme DELTA un outil de description logique pour la synthèse automatique dans la conception des machines séquentielles synchrones /." S. l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00297303.
Full textBessot, Denis. "Conception de deux points mémoire statiques CMOS durcis contre l'effet des aléas logiques provoqués par l'environnement radiatif spatial." Grenoble INPG, 1993. http://www.theses.fr/1993INPG0161.
Full textReyna-Rojas, Roberto Alonso. "Conception et intégration VLSI d'un système de vision générique. Application à la détection et à la localisation d'objets à l'aide de "Support vector machines"." Toulouse, INSA, 2002. http://www.theses.fr/2002ISAT0004.
Full textHanriat, Stéphane. "Synthèse logique à base de règles pour les compilateurs de silicium." Phd thesis, Grenoble INPG, 1986. http://tel.archives-ouvertes.fr/tel-00322203.
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