Patents Assigned to Ecole Polytechnique Federales de Lausanne
  • Publication number: 20140136513
    Abstract: A database system maintains a feature set of a modern database system while operating directly on raw data files. Systems may use an adaptive indexing mechanism that maintains positional information to provide efficient access to raw data files, a flexible caching structure, and techniques for selective parsing and selective tokenizing. In doing so, possible performance bottlenecks associated with repeated parsing, tokenizing, and expensive data type conversion costs can be overcome.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 15, 2014
    Applicant: Ecole Polytechnique Fédérale de Lausanne (EPFL)
    Inventors: Anastasia Ailamaki, Stratos Idreos, Ioannis Alagiannis, Renata Borovica, Miguel Sergio De Oliveira Branco
  • Patent number: 8723365
    Abstract: A device for supplying power to a load, requiring both a pre-determined supply of electrical power and high power for short durations of the operating cycle of the load, where the operating cycle is repeated. The power supply device includes a connection to an electrical grid, an AC voltage transformation circuit, a voltage rectification means and a plurality of DC/DC converters mounted in series to terminals of the load. Each of the DC/DC converters has a storage capacitor mounted in parallel to it and at least one of the DC/DC converters is supplied directly by the voltage rectification means. At least another one of the DC/DC converters is not supplied directly by the voltage rectification means. The power supply device may compensate for losses in the power supply device and load, and may substantially continually and uniformly balance voltages at terminals of the storage capacitors.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: May 13, 2014
    Assignees: Ecole Polytechnique Federale de Lausanne (EPFL), European Organization for Nuclear Research
    Inventors: Frederick Bordry, Jean-Paul Burnet, Claude Fahrni, Alfred Rufer
  • Publication number: 20140129190
    Abstract: The present invention discloses a method, apparatus and computer program product for locating a source of diffusion in a network, the method comprising providing a model of at least a portion of the network, the network comprising a plurality of nodes, a plurality of edges, and at least one source of diffusion, providing a model of a diffusion process initiated by the at least one source during a time period of interest, and employing a source estimator to determine a location of a source of diffusion in at least a portion of the network based on a plurality of network model parameters characteristic for the at least a portion of the network, and a plurality of diffusion process model parameters characteristic for the provided model of a diffusion process.
    Type: Application
    Filed: November 8, 2012
    Publication date: May 8, 2014
    Applicant: Ecole Polytechnique Federale de Lausanne EPFL
    Inventors: Pedro Filipe PEREIRA CORREIA PINTO, Patrick Thiran, Martin Vetterli
  • Publication number: 20140121676
    Abstract: The present invention relates to a method, such as a surgical method for assisting a surgeon for placing screws in the spine using a robot attached to a passive structure. The present invention also related to a method, such as a surgical method for assisting a surgeon for removing volumes in the body of a patient using a robot attached to a passive structure and to a device to carry out said methods. The present invention further concerns a device suitable to carry out the methods according to the present invention.
    Type: Application
    Filed: April 2, 2012
    Publication date: May 1, 2014
    Applicant: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Szymon Kostrzewski, Philippe Berard, Charles Baur, John Michael Duff, Kishore Sandu
  • Publication number: 20140107992
    Abstract: Computer-implemented methods, software, and systems for determining a distribution of neuronal cells across a portion of a brain are described. One computer-implemented method for determining a target distribution of one or more neuronal cells across a portion of a brain, comprising: constraining, by one or more computers, a start distribution of the one or more neuronal cells by expression of one or more marker genes and by protein stain of the one or more marker genes across the portion of the brain to obtain the target distribution.
    Type: Application
    Filed: March 12, 2013
    Publication date: April 17, 2014
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventor: Ecole Polytechnique Federale De Lausanne (EPFL)
  • Publication number: 20140108315
    Abstract: Computer-implemented methods, software, and systems for determining functional synapses from given structural touches between cells in a neuronal circuit are described. One computer-implemented method for determining functional synapses from predetermined synapses of connections between two cells in a neuronal circuit, includes determining, from the predetermined synapses, the functional synapses by leaving a portion of the connections unused, e.g. for activation by plasticity mechanisms.
    Type: Application
    Filed: March 12, 2013
    Publication date: April 17, 2014
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Michael Reimann, Henry Markram, Felix Schürmann, Eilif Benjamin Muller, Sean Lewis Hill, James Gonzalo King
  • Publication number: 20140097376
    Abstract: The present invention refers to using the principal of a room temperature molten ionic liquid, to an electrolyte, to devices comprising the ionic liquid co-melting, and to the preparation of a room temperature ionic liquid via various physical and chemical methods. The room temperature molten ionic liquid comprises at least two component salts, at least one of which is not molten at room temperature, but, if combined with another salt, is in the molten state at room temperature.
    Type: Application
    Filed: December 12, 2013
    Publication date: April 10, 2014
    Applicant: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Jing Zhang, Chengcheng Xi, Yiming Cao, Feifei Gao, Peng Wang, Shaik Mohammad Zakeeruddin, Michael Graetzel
  • Publication number: 20140096874
    Abstract: An article made of an alloy of the general formula Pt1-a-bMa(B1-xMdx)b in which i) M stands for one or a mixture of metallic element(s) of the group Zr, Ti, Fe, Ni, Co, Cu, Pd, Ag, Al; ii) Md stands for one or a mixture of several metalloids of the group Si, P, C, S, As, Ge; iii) a is smaller than 0.2; iv) b is comprised between 0.2 and 0.5; v) x is comprised between 0 and 0.8; vi) the overall P content, if present, is less than 10 atomic percent the proportions of the elements forming the alloy having been selected to confer a hardness of at least 400 HV, a melting point below 1000° C. and improved processibility to the alloy.
    Type: Application
    Filed: May 2, 2012
    Publication date: April 10, 2014
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventor: Ludger WEBER
  • Publication number: 20140091792
    Abstract: A method for producing a hyperpolarized sample for use in a magnetic resonance investigation has the following steps: a) providing a solid sample (50), containing long T1 nuclei and short T1 nuclei in the same molecules (51); b) hyperpolarizing the short T1 nuclei in the solid sample (50); c) transforming the solid sample (50) into a liquid sample (52); and d) transferring the polarization of the short T1 nuclei to the long T1 nuclei within the molecules in the liquid sample (52) by Cross Polarization. The method can provide samples with hyperpolarized long T1 nuclei, in particular 13C or 15N, in a simple and efficient way.
    Type: Application
    Filed: October 3, 2012
    Publication date: April 3, 2014
    Applicants: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL), BRUKER BIOSPIN AG
    Inventors: Sami Jannin, Joost Lohman, Geoffrey Bodenhausen, Klaes Golman
  • Patent number: 8686285
    Abstract: The present invention refers to using the principal of a room temperature molten ionic liquid, to an electrolyte, to devices comprising the ionic liquid co-melting, and to the preparation of a room temperature ionic liquid via various physical and chemical methods. The room temperature molten ionic liquid comprises at least two component salts, at least one of which is not molten at room temperature, but, if combined with another salt, is in the molten state at room temperature.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: April 1, 2014
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Jing Zhang, Chengcheng Xi, Yiming Cao, Feifei Gao, Peng Wang, Shaik Mohammad Zakeeruddin, Michael Graetzel
  • Patent number: 8675016
    Abstract: In a view, e.g. of scenery, of a shopping or museum display, or of a meeting or conference, automated processing can be used to annotate objects which are visible from a viewer position. Annotation can be of objects selected by the viewer, and can be displayed visually, for example, with or without an image of the view.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: March 18, 2014
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Martin Vetterli, Serge Ayer
  • Publication number: 20140060641
    Abstract: The present invention provides an improved redox couple for electrochemical and optoelectronic devices. The redox couple is based on a complex of a first row transition metal, said complex containing at least one mono-, bi-, or tridentate ligand comprising a substituted or unsubstituted ring or ring system comprising a five-membered N-containing heteroring and/or a six-membered ring comprising at least two heteroatoms, at least one of which being a nitrogen atom, said five- or six-membered heteroring, respectively, comprising at least one double bond. The invention also relates to electrolytes and to the devices containing the complex, and to the use of the complex as a redox couple. The invention further provides electrochemical and/or optoelectronic devices comprising a first and a second electrode and, between said first and second electrode, a charge transport layer, said a charge transport layer comprising tetracyanoborate ([B(CN)4]?) and a cationic metal complex functioning as redox-couple.
    Type: Application
    Filed: February 24, 2012
    Publication date: March 6, 2014
    Applicant: Ecole Polytechnique Federale de Lausanne
    Inventors: Mohammad Khaja Nazeeruddin, Michael Graetzel, Etienne Baranoff, Florian Kessler, Jun-Ho Yum, Aswani Yella, Hoi Nok Tsao, Shaik Mohammad Zakeeruddin
  • Publication number: 20140065099
    Abstract: The present invention provides methods of treating various disorders associated with mitochondrial dysfunction, including but not limited to metabolic disorders, neurodegenerative diseases, chronic inflammatory diseases, and diseases of aging.
    Type: Application
    Filed: February 15, 2012
    Publication date: March 6, 2014
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Carlos Canto Alvarez, Peter Bai, Riekelt Houtkooper, Johan Auwerx, Laurent Mouchiroud
  • Patent number: 8667046
    Abstract: A Generalized Programmable Counter Array (GPCA) is a reconfigurable multi-operand adder, which can be reprogrammed to sum a plurality of operands of arbitrary size. The GPCA is configured to compress the input words down to two operands using parallel counters. Resulting operands are then summed using a standard Ripple Carry Adder to produce the final result. The GPCA consists of a linear arrangement of identical compressor slices (CSlice).
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: March 4, 2014
    Assignee: Ecole Polytechnique Federale de Lausanne/Service des Relations Industrielles
    Inventors: Philip Brisk, Alessandro Cevrero, Frank K. Gurkaynak, Paolo Ienne Lopez, Hadi Parandeh-Afshar
  • Publication number: 20140050449
    Abstract: An optical fibre designed to simultaneously attenuate the effect of modulation instability and stimulated Raman scattering. A first solution proposes to use non-zero dispersion shifted fibres in the normal dispersion regime to reduce both influences at the same time. A further solution proposes to implement corresponding filter elements in the signal line. A still further solution proposes to additionally provide absorber elements for the Raman wavelengths or to design the core as a leaky one for these wavelengths.
    Type: Application
    Filed: December 7, 2011
    Publication date: February 20, 2014
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventor: Luc Thevenaz
  • Patent number: 8652936
    Abstract: A method of forming an optoelectronic device comprising growing a first multi-layer 2 representing a reflector on a first substrate and a second multilayer 4 representing an active region on a second substrate, the first and second substrates being lattice mismatched, fusing the first multi-layer 2 to a third substrate 3, wherein the material of the third substrate 3 is lattice matched with respect to the material of the second multi-layer 4, removing the first substrate to expose the first multi-layer 2, and fusing the first multi-layer to the second multi-layer 4.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: February 18, 2014
    Assignee: Ecole Polytechnique Federale de Lausanne
    Inventors: Alexei Sirbu, Alexandru Mereuta, Andrei Caliman
  • Publication number: 20140043060
    Abstract: A logic gate with three inputs A, B, and C, and one output implementing a function MAJ(A,B,C)=A*B+B*C+A*C comprising two mutually exclusive transmission gates (TGs) connected in series, based on two parallel double-gate controllable polarity devices, a polarity of each being controlled by input A and a conduction being controlled by input B, or vice-versa, in opposite polarities, and that route either an input A or C from one side of the transmission gates to the output.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 13, 2014
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Luca Gaetano AMARU, Pierre-Emmanuel Julien Marc GAILLARDON, Giovanni DE MICHELI
  • Patent number: 8649445
    Abstract: In bus communications methods and apparatus, a first set of physical signals representing the information to be conveyed over the bus is provided, and mapped to a codeword of a sparse signaling code, wherein a codeword is representable as a vector of a plurality of components, some of which are quiescent components and some of which are non-quiescent components, wherein the number of quiescent components and non-quiescent components meet a sparseness requirement.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: February 11, 2014
    Assignee: École Polytechnique Fédérale de Lausanne (EPFL)
    Inventors: Harm Cronie, Amin Shokrollahi, Armin Tajalli
  • Publication number: 20140024447
    Abstract: A system and method for local multiplayer gaming are disclosed. According to one embodiment, a system comprises a plurality of mobile client devices including a mobile client device designated as a server device. Each mobile client device comprises a display, at least one local network interface for communication with said server device and a processor. The processor is programmed for playing a multiplayer game with other mobile client devices and rendering on said display a game situation depending on commands sent by a plurality of mobile client devices to said server device over said at least local network interface. At least one of said mobile client devices is configured for overhearing commands sent by at least one other mobile client device to said server device or another mobile client device and for rendering on its display a game situation depending on said overheard command.
    Type: Application
    Filed: March 15, 2013
    Publication date: January 23, 2014
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Minh Thoai Anh LE, Lorenzo KELLER, Athina MARKOPOULOU, Christina FRAGOULI
  • Patent number: 8633697
    Abstract: A method for nuclear magnetic resonance (NMR) spectroscopy of a sample involves excitation of long lived coherences (LLC) between the singlet state S0 and the central triplet state T0 of nuclei of the sample by initiating irradiation of the sample with an rf-field with carrier frequency ?rf; sustaining of the LLC by maintaining the rf-irradiation during an interval ?2; converting the LLC temporarily into observable magnetization by interrupting the rf-irradiation during an observation interval ?3; detecting NMR-signals during the observation interval ?3 and reconversion of the observable magnetization back into LLC after the observation interval ?3. These steps are repeated n times, wherein n is a positive integer. The method allows ultra high-resolution spectra of long-lived coherences to be obtained.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: January 21, 2014
    Assignees: Bruker BioSpin AG, Ecole Polytechnique Fédérale de Lausanne
    Inventors: Sami Jannin, Aurélien Bornet, Geoffrey Bodenhausen