Patents Assigned to Inria Institut National de Recherche
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Patent number: 6539127Abstract: An electronic data processing device receives first and second data sets representing first and second comparable digital images. It comprises registration means comprising a first module which calculates a main function representative of the correlation ratios between the data of the first and second sets, and a second module which determines a registration transformation between one of the images and the other from the main function.Type: GrantFiled: July 27, 1999Date of Patent: March 25, 2003Assignee: Inria Institut National de RechercheInventors: Alexis Roche, Nicholas Ayache, Gregoire Malandain, Xavier Pennec
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Publication number: 20020183992Abstract: The invention relates to the simulation of the deformation of materials, notably of soft body tissues. An apparatus comprises a memory zone (MEM, NT) storing data as to the position of an object, recorded at the vertices of a grid pattern, and data for force to be exerted on the object. A computer (&mgr;P, MT) evaluates new positions of the vertices, as a function of a force exerted globally and mechanical parameters of the material. According to the invention, this computer comprises a module for calculating, for each mesh, a deviation between the current length of an edge and its previous length, and the force data at each vertex of the mesh. Another module calculates, for each vertex, new positional data relating to this vertex as a function of the forces exerted thereon and its previous position.Type: ApplicationFiled: February 4, 2002Publication date: December 5, 2002Applicant: INRIA INSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUEInventors: Nicholas Ayache, Herve Delingette, Guillaume Picinbono
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Patent number: 6483852Abstract: A connection device connects a radio network and a cabled network communicating respectively by way of messages encapsulated according to radio and cable protocols, and includes a storage module containing a routing table, and a processing module for managing exchanges of data as a function of the routing table. The processing module includes a management module capable on the one hand of disencapsulating a message received from the radio network, in order to extract routing information therefrom and then to compare this information with the routing table in order to choose at least one re-sending network for the message, and on the other hand of re-encapsulating the message in the radio network format or according to a mixed radio format, having radio and cable capsules, depending on whether the re-sending network chosen is the radio network or the cabled network, with a view to re-sending it in the chosen re-sending network segment.Type: GrantFiled: December 14, 1998Date of Patent: November 19, 2002Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventors: Philippe Jacquet, Paul Muhlethaler
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Patent number: 6392653Abstract: The invention relates to the field of binary image processing operations, such as thinning or thickening of 2D or 3D images with pixels or with voxels, respectively. The device according to the invention has processing means which rely on the logic of binary decision diagrams, of reduced order and with inverting branch instructions, in particular for determining whether or not a current element is a simple point. The binary decision diagram then defines a set of comparisons of bits of the elements of a chosen neighbourhood of the current element, which ends up at a terminal node “1” or a terminal node “0”, defining a particular property of the current element.Type: GrantFiled: June 23, 1999Date of Patent: May 21, 2002Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventors: Grégoire Malandain, Luc Robert
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Patent number: 6289135Abstract: An electronic processing device receives sets of image data representing respectively sequential three-dimensional digital images of the same region. This device comprises means capable of defining a three-dimensional shape of interest on the basis of at least one of the sets of image data, and of extracting from each set image data representing characteristic points of the shape of interest, processing means for establishing on the basis of the image data of the contours a spatial-temporal planispheric transformation making it possible to pass from characteristic points extracted from one image to the characteristic points extracted from another image of the sequence, and means for displaying selected motion data derived from the parameters of the transformation.Type: GrantFiled: November 4, 1997Date of Patent: September 11, 2001Assignee: Inria Institut National de Recherche en Informatique et en AntomatiqueInventors: Jèrôme Declerck, Nicholas Ayache, Jacques Feldmar
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Patent number: 6272592Abstract: A cache memory device including an input/output (ESRQ) for receiving a request (REQ) having a main address (AP) and optional data (D); an input/output (ESMP) to an addressable main memory (MP) or another addressable cache memory; a plurality of X memory banks (BCi) wherein i is lower than X and higher than 0, each having a number Li of lines for containing data, the lines being individually designated by a local address (AL) in each bank; an arrangement for answering a request (REQ) by connecting the main address (AP) in the request to a local address (AL) in the bank (BCi) in accordance with a predetermined la (fi) for each bank (BCi), whereby the line thus designated in the bank (BCi) is the only line to contain the datum referred to by the main address; and an arrangement (CHA) for loading the cache memory according to the received requests.Type: GrantFiled: September 9, 1994Date of Patent: August 7, 2001Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventor: André Seznec
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Patent number: 6167516Abstract: A device receives at one input (2) data of a file to be processed, and includes a processing module (5) which at the start of receiving the file, react by three operative stages. These stages include first stage of inserting data blocks from the file into a source memory (MS), after transformation, a second continuous stage of processing each data block of the file, transformed and inserted into the source memory (MS), and a third stage of generating a signature from the transformed, inserted and processed blocks.Type: GrantFiled: November 25, 1997Date of Patent: December 26, 2000Assignees: Inria Institut National de Recherche en Informatique et en Automatique Cogenit, Compagnie Generale d'Informatique et de Tele-CommunicationsInventors: Paul Camion, Nicolas Sendrier, Fran.cedilla.ois Cordier, Pierre Kalfon
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Patent number: 6023457Abstract: A data transmission installation includes at least two data processing tenals(Pa,Pb), each equipped with a network interface(Ia,Ib) fro transmitting messages on request, and collecting received messages, a transmission/reception management device(ARC) giving instructions confirming transmission or reception, a test unit for defining a recognized collision, and a unit for resolving collisions, following a recognized collision condition. Each of the data processing terminals includes a multi-directional radio transmission/reception device controlled in accordance with the confirming instructions fro the transmission of messages to be exchanged. In response at least to the start of an instruction confirming transmission, the radio transmission/reception device operates in rapidly alternating transmission/reception, according to a pattern chosen in order to be peculiar to the data processing terminal.Type: GrantFiled: November 7, 1997Date of Patent: February 8, 2000Assignee: Inria Institut National de Recherche En Informatique Et En AutomatiqueInventors: Philippe Jacquet, Paul Muhlethaler
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Patent number: 5996017Abstract: A method for information exchange in the customer/server mode between stations connected by a communication network is described. An emulated server (SEM) is provided at at least certain stations. The emulated server is appropriate for dialog according to a communication protocol to process requests for consulting resource files at a coupler between a station and the network. An interception mechanism (INT) is used to intercept the requests for consulting the resource files by redirecting them to the local emulated server. The emulated server is used either as a cache memory to reduce traffic or as a switch to mitigate and remedy a breakdown of the server.Type: GrantFiled: June 12, 1997Date of Patent: November 30, 1999Assignee: Inria Institut National de Recherche en Infomatique et en AutomatiqueInventor: Patrick Cipiere
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Patent number: 5689510Abstract: A data transmission installation includes at least two data processing terminals (Pa, Pb), each equipped with a network interface (Ia, Ib) for transmitting messages on request, and collecting received messages, a transmission/reception management device (ARC) giving instructions confirming transmission or reception, a test unit for defining a recognized collision, and a unit for resolving collisions, following a recognized collision condition. Each of the data processing terminals includes a multi-directional radio transmission/reception device controlled in accordance with the confirming instructions for the transmission of messages to be exchanged. In response at least to the start of an instruction confirming transmission, the radio transmission/reception device operates in rapidly alternating transmission/reception, according to a pattern chosen in order to be peculiar to the data processing terminal.Type: GrantFiled: September 26, 1994Date of Patent: November 18, 1997Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventors: Philippe Jacquet, Paul Muhlethaler
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Patent number: 5638449Abstract: A method of data transmission for a data transmission system which includes at least two data processing stations, each of the data processing stations being equipped with a network interface configured to communicate by radio over a data channel, to emit messages on request, to collect messages received, and to establish confirmative emission or reception orders, includes a first step of receiving an order confirming emission of a message in one of the data processing stations. In the next step, the station responds to the order by carrying out, over the data channel, a rapidly alternating emission/reception according to a chosen pattern peculiar to this station. The station recognizes a collision if a signal of superior strength to a first threshold strength is received during a substantial part of at least one silence of the rapidly alternating emission/reception, thus demonstrating the concomitant emission of another station. The collision is processed if so recognized.Type: GrantFiled: September 26, 1994Date of Patent: June 10, 1997Assignee: INRIA Institut National de Recherche en Informatique et en AutomatiqueInventors: Philippe Jacquet, Paul Muhlethaler
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Patent number: 5517501Abstract: A data processing station wherein a network interface monitors the transmission channel and generates event signals, e.g. "transmission start" "collision detected" and "channel back to vacant condition". If a collision occurs in local transmission, transmission is maintained with a collision indication for at least one period before being cut off. An observation register receives the event signals and responds by generating a channel observation signal which may be "transmission OK" "collision slot" and "vacant slot". When transmission of a fresh data packet is requested, a first transmission may or may not be attempted (normal mode) depending on the condition of the observation register.Type: GrantFiled: September 27, 1994Date of Patent: May 14, 1996Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventors: Philippe Jacquet, Paul Muhlethaler
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Patent number: 5499322Abstract: An image is defined, in correspondence with a predetermined polyhedral meshing of a portion of the space, by a numerical value for each vertex of the meshing. Polygon processing includes receiving a representation of a plane polygon with p vertices, p respective values for these p vertices, and a threshold. In correspondence with the polygon, polygon processing supplies a list of oriented segments linking points of the edges of the polygon which are interpolated as being equal to the threshold, with a predetermined direction convention. Polyhedron processing includes receiving a representation of a polyhedron with the values at its vertices and a threshold. Polyhedron processing then invokes polygon processing for all the faces of the polyhedron, which supplies a list of oriented segments. Polyhedron processing then associates with the polyhedron a list of closed and oriented cycles, constituted by segments from the said list of segments.Type: GrantFiled: March 30, 1993Date of Patent: March 12, 1996Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventors: Jean-Philippe Thirion, Nicholas Ayache, Olivier Monga, Alexis Gourdon
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Patent number: 5421330Abstract: An apparatus for assisting with examining a body emitting wavebeams includes sensors to collect wavebeams along a plurality of respective axes termed "acquisition lines" and to transform the collected wavebeams into signals defining an image of projections of at least part of the body. The signals represent the intensity of the wavebeams. Differences between selected ones of the signals relative to the axis parameters are determined. Each jump in the intensity of the signals determines a critical point corresponding to an acquisition line tangential to a boundary of the body. The axis parameters of the critical points identify a position of at least one portion of the boundary.Type: GrantFiled: December 23, 1992Date of Patent: June 6, 1995Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventors: Jean-Philippe Thirion, Nicholas Ayache
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Patent number: 5053687Abstract: An articulated device includes two plates (PI, PS) interconnected by six k members (OLij) disposed in a closed latticework structure, and a control assembly for controlling the relative positions of these two plates. Each link member is of substantially constant length and the control assembly also includes six slider members (OCij) respectively connected to the six link members (OLij) and to the bottom plate (PI), each slider member being suitable for sliding relative to the bottom plate (PI) along a predetermined sliding direction under drive from a motor (MOTij, TFij).Type: GrantFiled: December 19, 1989Date of Patent: October 1, 1991Assignee: Inria Institut National de Recherche en Information et en AutomotiqueInventor: Jean-Pierre Merlet
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Patent number: 4799186Abstract: The stable memory (2) includes an interface (30) for communication with an allocated processor (1). It includes two memory banks (51, 52) for containing the same information at each address. The interface (b 30) interchanges addresses and commands with the memory banks via an access logic conroller or filter (20). Data interchanges pass via a switching and comparator member (40). The information contained in the memory banks (51, 52) is structured in the form of objects which are rendered indivisible by use of a chaining vector which is established and verified by the logic controller (20).Type: GrantFiled: December 12, 1986Date of Patent: January 17, 1989Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventor: Florimond E. Ployette
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Patent number: 4734855Abstract: An apparatus and method for fast and stable information storage is provided that employs a data storage apparatus having a series of non-volatile memory banks that are externally addressable and have selective write and read controls. Access to the memory banks is provided via hardware access protection mechanisms to ensure that any access to the memory banks is verified by means of an access key. Software access protection is also provided if two separate processors share a common memory bank.Type: GrantFiled: June 13, 1985Date of Patent: March 29, 1988Assignee: INRIA-Institut National de Recherche en Informatique et en AutomatiqueInventors: Michel P. P. A. Banatre, Jean-Pierre A. F. J. Banatre, Florimond E. A. Ployette, Bertrand J. G. Decouty, Yves H. Prunault
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Patent number: 4570183Abstract: The present invention relates to a method and to apparatus for measuring electric charge, in particular for measuring small electric charges which are present in rapid succession, as happens under the effect of radiation, ionizing particles, or from piezo-electric means.The apparatus comprises an amplifier (2) having high input impedance and a feedback network. The feedback network comprises at least one branch (24) connecting the output (6) of the amplifier (2) to an inverting input (21) thereof. Three switches (3,4,5) are so connected that either one of two of them (3,4) is capable of interrupting the transmission of an electrical signal via said at least one branch (24) of the feedback circuit. The portion of said branch (24) located between said switches includes electrical energy storing means (C.sub.2).Type: GrantFiled: October 7, 1983Date of Patent: February 11, 1986Assignee: Inria Institut National de Recherche en Informatique et AutomatiqueInventor: Georges Kryze
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Patent number: D437256Type: GrantFiled: July 27, 1998Date of Patent: February 6, 2001Assignee: Inria Institut National de Recherche en Informatique et AutomatiqueInventor: Michel Parent
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Patent number: RE37334Abstract: A data processing station wherein a network interface monitors the transmission channel and generates event signals, e.g. “transmission start” “collision detected” and “channel back to vacant condition”. If a collision occurs in local transmission, transmission is maintained with a collision indication for at least one period before being cut off. An observation register receives the event signals and responds by generating a channel observation signal which may be “transmission OK” “collision slot” and “vacant slot”. When transmission of a fresh data packet is requested, a first transmission may or may not be attempted (normal mode) depending on the condition of the observation register.Type: GrantFiled: May 14, 1998Date of Patent: August 21, 2001Assignee: Inria Institut National de Recherche en Informatique et en AutomatiqueInventors: Philippe Jacquet, Paul Muhlethaler