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

Isorg

Stmicroelectronics S.a.

St-ericsson Sa

Telefonaktiebolaget Lm Ericsson (publ)

Oct Circuit Technologies International Limited

Christophe Premont

David Chesneau

Christophe Bernard

Patrik Arno

Josep Segura Puchades

Severin Trochut

Romain Gwoziecki

Jean-Yves Gomez

Louis Tallaron

Laurent Jamet

Emmanuel Guerineau

In the field of the counting of objects, a use is provided of a photosensitive assembly comprising at least one photodiode or one photoresistor, and a source of uniform illumination for illuminating the assembly, the establishment of a reference current supplied by the photosensitive assembly for an illuminated region of this assembly corresponding to a given fraction of the surface of the assembly, the disposition of objects to be counted against the photosensitive assembly, the illumination of the assembly by the source, the objects masking a part of the surface of the assembly, measurement of the current supplied by the assembly, and determination of a ratio between measured current and reference current to deduce the proportion between the surface area of photosensitive element illuminated and the surface area masked by the objects disposed. From this ratio, information on the number of objects disposed on the photosensitive assembly is extracted.

Method and device for counting objects

The invention relates to a tactile or contactless user interface device (), comprising organic semiconductor components () made by depositing organic conducting and semiconducting material in liquid form on a dielectric support ().

Contactless user interface having organic semiconductor components

The invention proposes a direct current voltage conversion circuit which can operate as a step-up circuit, a step-down circuit, or operate as a step-up or step-down circuit depending on the modes of operation.

Direct current voltage conversion circuit having multiple operational configurations

A method for making a matrix device including a matrix of photodetecting or photoemitting elements, the method including designing operations for: a) identifying, from at least one topology of the matrix device, one or more spurious conducting closed circuits; b) selecting at least one photodetecting or photoemitting element of the matrix device belonging to at least one of the spurious conducting closed circuits identified, the at least one element selected being made inactive.

Method for designing an array of organic photodetector or photoemitter elements

The switched-mode power supply includes a switching cell having an inductive element with two connections and several individually selectable outputs, and in which the two connections of the inductive element are joined respectively to at least two of the individually selectable outputs. It is thus possible to generate and regulate at least two different voltages, one positive and one negative.

Method of controlling a switched-mode power supply having a single inductive element and several outputs, and corresponding power supply, in particular for a cellular mobile telephone

The switch mode power supply includes a switching cell SC controllable cyclically and including only one inductive element L and several individually selectable outputs. During each conduction cycle, a total power level corresponding to the sum of the individual power levels respectively required by all the outputs OUTi during this cycle is injected into the inductive element L, the outputs requiring a non-zero individual power level are selected successively and in a predetermined order that is identical for all the cycles, and, at each selected output, the corresponding individual power level is produced.

Switch mode power supply having only one inductive element an several outputs and method of controlling same

A ramp capacitor CAPhas a first terminal connected to a power supply voltage VBAT. A generator circuit is connected to a second terminal of the ramp capacitor and adapted to generate a voltage ramp at the terminals of the ramp capacitor. The generator circuit includes a constant current source SCC connected to the second terminal Bof the ramp capacitor CAPand auxiliary circuit MAX adapted in the presence of a transient variation of the power supply voltage to determine the transient current flowing in the ramp capacitor and generated by the transient variation. Responsive thereto, delivery is made to the second terminal Bof the ramp capacitor CAPof a charging current equal to the algebraic sum of the constant current delivered by the constant current source and an auxiliary current equal and opposite to the transient current.

Growing community of inventors

Sassenage, France

Christophe Premont