Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Scaleo Chip

Silicon Mobility

Olivier Debicki

Laurent Ouvry

Suzanne Lesecq

Vincent David

Edith Beigne

Diego Puschini Pascual

Mathieu Jan

Mykhailo Zarudniev

Tiana Rakotovao Andriamahefa

Julien Mottin

Frederic Heitzmann

Olivier Sentieys

Florent Berthier

Matthieu Lemerre

Eric Miniere

Nicolas Mareau

Jérémy Barra

Bruno Salle

Christmann Jean-Frédéric

A method for measuring, using a radar or sonar, the velocity with respect to the ground of a carrier moving parallel to the ground, includes the following steps: a) orienting the line of sight of the radar or sonar toward the ground; b) emitting a plurality of radar or sonar signals (P-P) that are directed toward the ground, and acquiring respective echo signals (E-E); c) processing the acquired echo signals so as to obtain, for one or more echo delay values, a corresponding Doppler spectrum; d) for the or at least one the echo delay value, determining a high cut-off frequency of the corresponding Doppler spectrum; and e) computing the velocity of the carrier with respect to the ground on the basis of the one or more high cut-off frequencies. A system allowing such a method to be implemented.

Method and system for measuring the velocity of a carrier with respect to the ground

This asynchronous processor core comprises a loading unit for sequentially loading instruction lines, functional units for executing instructions and a decoder for decoding instruction lines loaded by the loading unit into instructions executable by the functional units. It comprises an execution control module configured as a two-state automaton: a sleep state (S), wherein the asynchronous processor core awaits an interrupt control signal to execute an interrupt routine; an execution state (S), wherein the decoder awaits a new interrupt routine instruction line to be decoded. The execution control module additionally manages a state variable (status) of the loading unit to selectively authorize or prevent, according to at least the value of this state variable (status), the loading of a new instruction line.

Asynchronous core processor and a sensor node communication microcontroller including the same

The invention is directed a method for transferring at least one datum between a real-time task producing a datum and a real-time task consuming said datum. The method may include, in response to initiation of a transfer of a datum by a current instance of an initiating task: creating at least one DMA descriptor describing the DMA transfer expected for said datum; inserting DMA descriptors into a list of descriptors awaiting processing by a DMA controller, said DMA descriptors being inserted in a manner sorted based on a sorting criterion relating to a visibility date of the data and/or a temporal behavior of the tasks; processing the descriptors on the list of DMA descriptors by executing DMA requests; and executing the following instance of the initiating task based on termination of the processing a predefined set of DMA descriptors on the list of descriptors.

Method for data transfer between real-time tasks using a DMA memory controller

A method to locate material bodies on an at least 2-dimensional occupancy grid G, having a first resolution stepsize R, that includes a set of cells represented by vertices and segments connecting these vertices. The method uses a sensor for detecting an obstacle which is positioned at source point S, and includes at least the following steps: acquisition by the sensor of a measurement of the position of a material body detected at a point F; defining the coordinates of a point M by using a space discretized with the aid of a spatial stepsize &#x3b4; which is finer than the resolution stepsize R, initializing an integer, error parameter, and calculating the value of the error parameter for at least one first vertex of the cell of the current grid.

Method and system for determining cells traversed by a measuring or visualization axis

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Saint Vincent de Mercuze, France

Olivier Debicki