Institut Mines-telecom

France Telecom

Institut Telecom/telecom Bretagne

Cyril Lahuec

Fabrice Seguin

Vincent Nourrit

Matthieu Arzel

Francesco Ferranti

Jean-Louis De Bougrenet

Thierry Djenizian

Jorge Perez Chamorro

Christian Person

Véronique Kuhn

A contact lens, intended to be worn on the eye of a person, for automatically aiming in the direction of the eye. The contact lens includes:—a membrane suitable for covering the pupil and the iris of the eye;—at least two light sources encapsulated in the membrane, each suitable for emitting a light beam whose divergence is controlled in relation to the axis of the lens;—at least one interface for collecting and supplying electrical energy to the light sources, from outside the lens;—at least one electronic circuit suitable for activating the sources from the interface.

Contact lens for automatically aiming in the direction of an eye of a person, associated detection system

An optical system for detecting and tracking the eye movements of an individual. The system includes a frame, intended to be worn on the face of the individual, that includes a plurality of illumination sources. The system includes at least one contact lens, intended to be worn by an eye of the individual facing the frame, in which are encapsulated: an autonomous integrated circuit, a plurality of photoreceptors and a wireless communication transmitter. Variation in a signal (e.g., voltage or current) delivered by the photoreceptors allows not only the closure of the eyelid but also eye movements to be detected.

Optical system for detecting and tracking eye movements, associated external frame and associated connected contact lens

A method is provided for encoding data to be sent to at least one receiver, including at least two identical encoding steps and at least one permutation step. Each encoding step associates a block of encoded data with a block of data to be encoded, using at least two basic codes, each code processing a subset of the data block to be encoded. The permutation step is inserted between two encoding steps, i.e. a current encoding step and a previous encoding step, such that the order of the data in a data block to be encoded by the current encoding step is different from the order of the data encoded by the previous encoding step. The permutation step implements, for a data block, a rotation applied to the data of the data block and a reversal of the order of the data of the data block. The operations can be implemented by an interleaving matrix.

Method for encoding data with at least two encoding steps, and at least one permutation step, corresponding encoding device, computer program and signal

A method and a device () for decoding a frame capable of being split into p sub-frames each consisting of k information symbols, a first n&#x2212;k redundant symbols and a last n&#x2212;k redundant symbols. The decoding process uses two individual decoders () which concurrently produce extrinsic data (Extr, Extr) respectively concerning information symbols and interleaved information symbols. The values of the extrinsic data (Extr, Extr) are refined by cross-feedback of said data to the input of the decoders ().

Method and a device for decoding slice codes

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Lampaul Plouarzel, France

Cyril Lahuec