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Institution

Orange S.A.

CompanyParis, France
About: Orange S.A. is a company organization based out in Paris, France. It is known for research contribution in the topics: Terminal (electronics) & Signal. The organization has 6735 authors who have published 9190 publications receiving 156440 citations. The organization is also known as: Orange SA & France Télécom.


Papers
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Patent
04 Apr 1995
TL;DR: In this paper, a process for the broadcasting of programmes with progressive conditional access and separation of the information flow, as well as the corresponding receiver, is described, in order to form the elementary flow, groups of m successive elements of the multiplex are taken.
Abstract: Process for the broadcasting of programmes with progressive conditional access and separation of the information flow, as well as the corresponding receiver, In order to form the elementary flow, groups of m successive elements of the multiplex are taken and for forming the complimentary flow groups of p successive elements of the multiplex are taken. Application to television with entitlement checking.

70 citations

Journal ArticleDOI
TL;DR: To improve the visualization of large 3D landscapes and city models in a network environment, the authors use two different types of hierarchical level-of-detail models for terrain and groups of buildings and leverage the models to implement progressive streaming in both client-server and peer-to-peer network architectures.
Abstract: To improve the visualization of large 3D landscapes and city models in a network environment, the authors use two different types of hierarchical level-of-detail models for terrain and groups of buildings. They also leverage the models to implement progressive streaming in both client-server and peer-to-peer network architectures. Visualizing large photorealistic 3D landscapes and city models has received significant attention over the last 10 years in the computer graphics community. More recently, the availability of broadband Internet access and Web-based visualization techniques is paving the way for large-scale 3D landscapes and city models for a variety of professional and mass-market services. To make such services appealing to a large audience, these 3D models must reach a sufficient level of realism and accuracy. Many solutions are now available to automatically generate 3D models of huge urban environments. Geographic information system (GIS) databases (such as terrain elevation grids, orthophotographs, and a building's footprint and height) provide a good basis for generating such models at affordable cost with minimum human intervention. In the future, the accuracy and realism of 3D city models will be improved thanks to recent progress in data capturing techniques.

70 citations

Journal ArticleDOI
TL;DR: Chronicle recognition approaches are challenging techniques for alarm correlation and diagnostic when on-line efficiency is required and the counterpart is the difficulty of acquiring and updating this expertise-based knowledge.

70 citations

Proceedings ArticleDOI
11 Dec 2006
TL;DR: The Micro-Frame Preamble (MFP) scheme makes it possible for a node to switch its radio off to avoid receiving irrelevant frames and improve energy savings, and is evaluated compared with traditional preamble sampling techniques.
Abstract: MAC protocols based on preamble sampling techniques like WiseMAC and BMAC offer significant energy savings for multihop wireless sensor networks. Although preamble sampling based techniques efficiently reduce idle listening in low-rate data networks, they introduce extra overhead due to possible reception of some irrelevant frames. In this paper, we identify the problem of receiving irrelevant frames and propose to replace the continuous preamble by a series of small frames that we call micro-frames. The resulting Micro-Frame Preamble (MFP) scheme makes it possible for a node to switch its radio off to avoid receiving irrelevant frames and improve energy savings. In the paper, we evaluate the theoretical energy savings of MFP compared with traditional preamble sampling techniques. We also discuss some experiences with our implementation of MFP on the Freescale MC13192 SARD.

70 citations

Book ChapterDOI
Thomas Peyrin1
02 Dec 2007
TL;DR: It is shown that the 256-bit version of GRINDAHL is not collision resistant, and with a work effort of approximatively 2112 hash computations, one can generate a collision.
Abstract: Due to recent breakthroughs in hash functions cryptanalysis, some new hash schemes have been proposed. GRINDAHL is a novel hash function, designed by Knudsen, Rechberger and Thomsen and published at FSE 2007. It has the particularity that it follows the RIJNDAEL design strategy, with an efficiency comparable to SHA-256. This paper provides the first cryptanalytic work on this new scheme. We show that the 256-bit version of GRINDAHL is not collision resistant. With a work effort of approximatively 2112 hash computations, one can generate a collision.

69 citations


Authors

Showing all 6762 results

NameH-indexPapersCitations
Patrick O. Brown183755200985
Martin Vetterli10576157825
Samy Bengio9539056904
Aristide Lemaître7571222029
Ifor D. W. Samuel7460523151
Mischa Dohler6835519614
Isabelle Sagnes6775318178
Jean-Jacques Quisquater6533518234
David Pointcheval6429819538
Emmanuel Dupoux6326714315
David Gesbert6345624569
Yonghui Li6269715441
Sergei K. Turitsyn6172214063
Joseph Zyss6143417888
Jean-Michel Gérard5842114896
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20238
20225
20215
20205
201915
201814