Tissot Sa

Ecole Polytechnique Federale De Lausanne

Csem Centre Suisse D'electronique Et De Microtechnique Sa - Recherche Et Développement

Engin Türetken

Edoardo Franzi

Andrea Dunbar

Patrick Stadelmann

Lingchuan Zhou

Virginie Moser

Pascal Fua

Pascal Heim

François Fleuret

Pascal Nussbaum

Francois Fleuret

Pierre-François Rüedi

Xinchao Wang

Riccardo Quaglia

Jérôme Berclaz

A method transmits by a watch an information message relating to an assessment of the sleep quality of a user of the watch. The method includes the following steps: recording by the processing unit of data describing at least one event-driven episode of at least one type of environmental event recorded during a sleep period of the user; identifying at least one type of environmental event that disturbs the user's sleep by processing the descriptive data; estimating a sleep quality assessment index for the user as a function of a sleep disturbance indicator for each identified type of sleep disturbing environmental event, and devising an information message including the estimated assessment index for the purpose of diffusion to the user.

Method of transmission by a watch of an information message relating to an assessment of the sleep quality of a user of said watch

An aspect of the invention relates to a method for correcting magnetometric measurements () made by a magnetometer mounted on a mobile support. The mobile support carries one or more movement and/or position sensors fixedly mounted with respect to the magnetometer. The method comprises:

Magnetometer calibration or setting

A pixel circuit for a ultra-low power image sensor, including: an integration node, on which a photodiode current is integrated, a comparator arranged to compare a voltage at the integration node with a reference voltage, a n+1 bits digital memory, a writing pulse signal generator arranged to generate a writing pulse signal, on the basis of the comparator output voltage and on the voltage at a memory node, the start of the pulse triggering the writing of the digital word in the n-bits digital memory part. The comparator includes a switch in series with a current source and arranged to be commanded by the voltage at the memory node so that the switch is open at the end of the pulse, so as to drastically limit the consumption of static power of the pixel circuit during the integration phase.

Pixel circuit for an ultra-low power image sensor

A method for the broadcasting by a watch of an informative message relating to an evaluation of the quality of life of a wearer of the watch includes the following steps: recording, by the processing unit, of data describing at least one factual episode of at least one type of environmental event recorded during a given period; identifying at least one type of environmental event disturbing the quality of life of the wearer from processing of the descriptive data; estimating an evaluation index of the quality of life of the wearer according to an indicator of disturbance of the quality of life relating to each type of environmental event disturbing the quality of life identified, and design of the informative message including the estimated evaluation index in prediction of its broadcasting to the wearer.

Method for the broadcasting, by a watch, of an informative message relating to an evaluation of the quality of life of a wearer of said watch

Systems and methods for tracking interacting objects may acquire, with a sensor, and two or more images associated with two or more time instances. A processor may generate image data from the two or more images. The processor may apply an extended Probability Occupancy Map (POM) algorithm to the image data to obtain probability of occupancy for a container class of potentially interacting objects, probability of occupancy for a containee class of the potentially interacting objects, and a size relationship of the potentially interacting objects, over a set of discrete locations on a ground plane for each time instance. The processor may estimate trajectories of an object belonging to each of the two classes by determining a solution of a tracking model on the basis of the occupancy probabilities and a set of rules describing the interaction between objects of different or the same classes.

Systems and methods for tracking interacting objects

Trajectories of objects are estimated by determining the optimal solution(s) of a tracking model on the basis of an occupancy probability distribution. The occupancy probability distribution is the probability of presence of objects over a set of discrete points in the spatio-temporal space at a number of time steps. The tracking model is defined by the set of discrete points, a virtual source location and a virtual sink location, wherein objects in the tracking model are creatable in the virtual source location and are removable in the virtual sink location.

Method and apparatus for multiple object tracking with K-shortest paths

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Ecublens, Switzerland

Engin Türetken