Lucent Technologies Inc.

Ecole Polytechnique Federale De Lausanne

Melexis Tessenderlo N.v.

Melexis Technologies Nv

Pierre-Andre Besse

Christian Schott

Radivoje S Popovic

Edoardo Charbon

Juerg Leuthold

Cristiano Niclass

Enrico Schurig

Alexis Rochas

A symmetrical vertical Hall element comprises a well of a first conductivity type that is embedded in a substrate of a second conductivity type and which is contacted by four contacts serving as current and voltage contacts. From the electrical point of view, such a Hall element with four contacts can be regarded as a resistance bridge formed by four resistors Rto Rof the Hall element. From the electrical point of view, the Hall element is then regarded as ideal when the four resistors Rto Rhave the same value. The invention suggests a series of measures in order to electrically balance the resistance bridge. A first measure exists in providing at least one additional resistor. A second measure exists in locally increasing or reducing the electrical conductivity of the well. A third measure exists in providing two Hall elements that are electrically connected in parallel in such a way that their Hall voltages are equidirectional and their offset voltages are largely compensated.

Magnetic field sensor with a hall element

An integrated imager circuit having a monolithic array of single photon avalanche diodes (SPADs) for capturing an image of a scene when said scene is hit by an optical pulse. The array has a plurality of SPADs connected to 2D readout circuits which determines the intensity of the light reflected by the scene by counting the number of photons received by the SPADs during a period of time. A plurality of SPADs connected to 3D readout circuits determines the distance to the scene by determining the elapsed time between the emission of each pulse and reception of the corresponding reflected photons.

Integrated imager circuit comprising a monolithic array of single photon avalanche diodes

A method and apparatus for providing optical 3R regeneration involving: 1) generating an encoded optical clock signal from at least an optical signal; 2) introducing the encoded clock signal into a delay interference section of a regenerator such that an amplitude modulated clock signal is produced; andoutputting the amplitude modulated clock signal wherein the output amplitude modulated clock signal preserves information present within the input optical signal.

3R optical signal regeneration

Growing community of inventors

Ecublens, Switzerland

Pierre-Andre Besse