Taxys = Esterel + Kronos: A tool for verifying real-time properties of embedded systems

The goal of TAXYS is to provide a framework for developing real-time embedded code and verifying its correct behavior with respect to quantitative timing requirements. To achieve so, TAXYS connects France Telecom's ESTEREL compiler SAXO-RT with VERIMAG's model-checker KRONOS. TAXYS has been successfully applied on real industrial telecommunication systems, such as a GSM radio link from Alcatel and a phone prototype from France Telecom

The Gabor transform as a modulated filter bank system

Nous décrivons un algorithme rapide pour le calcul de la transformation de Gabor. Cet algorithme, qui a pu être développé en adoptant un formalisme de type filtrage, permet une réduction significative de la complexité du calcul des coefficients de Gabor. Sa complexité est de l'ordre de celle d'une transformation de Fourier par bloc plus quelques opérations par point. On obtient ainsi un nombre d'opérations en O(M) pour un signal de M points alors que les algorithmes précédents les plus rapides étaient en O(M.LogM)

TAXYS: a Tool for the Development and

Abstract. The paper presents a prototype of the Taxys tool developed within a collaboration between France Telecom R&D and VER-IMAG. The connection of the Saxo-rt Esterel compiler and of the Kronos model-checker, together with on-the-fly techniques, brings up the possibility of verifying quantitative timing constraints on real industrial telecommunication systems, such as a GSM radio link and a phone prototype developed by France Telecom. In addition, Taxys offers a nonambiguous and user friendly formalism for specifying quantitative timing constraints as well as high-level diagnostic functionalities