Patents by Inventor Christophe Roussel
Christophe Roussel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11973457Abstract: An embodiment driver circuit comprises a power supply pin configured to receive a power supply voltage, and a set of control pins configured to provide a set of control signals for controlling switching of a set of switches of an h-bridge circuit comprising a pair of high-side switches and a pair of low-side switches. The driver circuit comprises control circuitry coupled to the control pins and configured to generate the control signals, and sensing circuitry coupled to the power supply pin and configured to generate a detection signal indicative of the power supply voltage exceeding a threshold value. The control circuitry is sensitive to the detection signal and is configured to generate the control signals to activate one of the pair of high-side switches and the pair of low-side switches and de-activate the other of the pair of high-side switches and the pair of low-side switches.Type: GrantFiled: May 18, 2021Date of Patent: April 30, 2024Assignees: STMicroelectronics (Alps) SAS, STMicroelectronics S.r.l., STMicroelectronics Application GMBHInventors: Aldo Occhipinti, Christophe Roussel, Fritz Burkhardt, Ignazio Testoni
-
Patent number: 11889594Abstract: A system includes lighting devices coupled to output supply pins, a microcontroller circuit, and a driver circuit, which receives data therefrom, and switches coupled in series to the lighting devices. The driver circuit includes output supply pins and selectively propagates a supply voltage to the output supply pins to provide respective pulse-width modulated supply signals at the output supply pins. The driver circuit computes duty-cycle values of the pulse-width modulated supply signals as a function of the data received from the microcontroller circuit. The lighting devices include at least one subset coupled to the same output supply pin. The microcontroller individually controls the switches via respective control signals to individually adjust a brightness of the lighting devices in the at least one subset of lighting devices.Type: GrantFiled: March 11, 2022Date of Patent: January 30, 2024Assignees: STMicroelectronics (Grenoble 2) SAS, STMicroelectronics S.r.l., STMicroelectronics Application GMBHInventors: Manuel Gaertner, Philippe Sirito-Olivier, Giovanni Luca Torrisi, Thomas Urbitsch, Christophe Roussel, Fritz Burkhardt
-
Publication number: 20220312566Abstract: A system includes lighting devices coupled to output supply pins, a microcontroller circuit, and a driver circuit, which receives data therefrom, and switches coupled in series to the lighting devices. The driver circuit includes output supply pins and selectively propagates a supply voltage to the output supply pins to provide respective pulse-width modulated supply signals at the output supply pins. The driver circuit computes duty-cycle values of the pulse-width modulated supply signals as a function of the data received from the microcontroller circuit. The lighting devices include at least one subset coupled to the same output supply pin. The microcontroller individually controls the switches via respective control signals to individually adjust a brightness of the lighting devices in the at least one subset of lighting devices.Type: ApplicationFiled: March 11, 2022Publication date: September 29, 2022Inventors: Manuel Gaertner, Philippe Sirito-Olivier, Giovanni Luca Torrisi, Thomas Urbitsch, Christophe Roussel, Fritz Burkhardt
-
Patent number: 11342908Abstract: An H-bridge circuit includes a supply voltage node, a first pair of transistors and a second pair of transistors. First transistors in each pair have the current paths therethrough included in current flow lines between the supply node and, respectively, a first output node and a second output node. Second transistors in each pair have the current paths therethrough coupled to a third output node and a fourth output node, respectively. The first and third output nodes are mutually isolated from each other and the second and fourth output nodes are mutually isolated from each other. The H-bridge circuit is operable in a selected one of a first, second and third mode.Type: GrantFiled: January 11, 2021Date of Patent: May 24, 2022Assignees: STMicroelectronics S.r.l., STMicroelectronics (Alps) SASInventors: Giovanni Luca Torrisi, Domenico aka Massimo Porto, Christophe Roussel
-
Publication number: 20210384852Abstract: An embodiment driver circuit comprises a power supply pin configured to receive a power supply voltage, and a set of control pins configured to provide a set of control signals for controlling switching of a set of switches of an h-bridge circuit comprising a pair of high-side switches and a pair of low-side switches. The driver circuit comprises control circuitry coupled to the control pins and configured to generate the control signals, and sensing circuitry coupled to the power supply pin and configured to generate a detection signal indicative of the power supply voltage exceeding a threshold value. The control circuitry is sensitive to the detection signal and is configured to generate the control signals to activate one of the pair of high-side switches and the pair of low-side switches and de-activate the other of the pair of high-side switches and the pair of low-side switches.Type: ApplicationFiled: May 18, 2021Publication date: December 9, 2021Inventors: Aldo Occhipinti, Christophe Roussel, Fritz Burkhardt, Ignazio Testoni
-
Publication number: 20210135661Abstract: An H-bridge circuit includes a supply voltage node, a first pair of transistors and a second pair of transistors. First transistors in each pair have the current paths therethrough included in current flow lines between the supply node and, respectively, a first output node and a second output node. Second transistors in each pair have the current paths therethrough coupled to a third output node and a fourth output node, respectively. The first and third output nodes are mutually isolated from each other and the second and fourth output nodes are mutually isolated from each other. The H-bridge circuit is operable in a selected one of a first, second and third mode.Type: ApplicationFiled: January 11, 2021Publication date: May 6, 2021Applicants: STMicroelectronics S.r.l., STMicroelectronics (Alps) SASInventors: Giovanni Luca TORRISI, Domenico aka Massimo PORTO, Christophe ROUSSEL
-
Patent number: 10924100Abstract: An H-bridge circuit includes a supply voltage node, a first pair of transistors and a second pair of transistors. First transistors in each pair have the current paths therethrough included in current flow lines between the supply node and, respectively, a first output node and a second output node. Second transistors in each pair have the current paths therethrough coupled to a third output node and a fourth output node, respectively. The first and third output nodes are mutually isolated from each other and the second and fourth output nodes are mutually isolated from each other. The H-bridge circuit is operable in a selected one of a first, second and third mode.Type: GrantFiled: April 15, 2020Date of Patent: February 16, 2021Assignees: STMicroelectronics S.r.l., STMicroelectronics (Alps) SASInventors: Giovanni Luca Torrisi, Domenico Porto, Christophe Roussel
-
Publication number: 20200336138Abstract: An H-bridge circuit includes a supply voltage node, a first pair of transistors and a second pair of transistors. First transistors in each pair have the current paths therethrough included in current flow lines between the supply node and, respectively, a first output node and a second output node. Second transistors in each pair have the current paths therethrough coupled to a third output node and a fourth output node, respectively. The first and third output nodes are mutually isolated from each other and the second and fourth output nodes are mutually isolated from each other. The H-bridge circuit is operable in a selected one of a first, second and third mode.Type: ApplicationFiled: April 15, 2020Publication date: October 22, 2020Applicants: STMicroelectronics S.r.l., STMicroelectronics (Alps) SASInventors: Giovanni Luca TORRISI, Domenico aka Massimo PORTO, Christophe ROUSSEL
-
Patent number: 10114088Abstract: A method for the preparation of a sample comprising highly polarized nuclear spins is proposed, comprising at least the following steps: a) provision of molecules with 1,2-dione structural units and/or molecules with 2,5-diene-1,4-dione structural units in the solid state; b) generation of radicals from these molecules by photo induced electron transfer by a first electromagnetic irradiation in the visible or ultraviolet frequency range in the solid state; c) dynamic nuclear polarization in the presence of a magnetic field in the solid state by applying a second electromagnetic irradiation with a frequency adapted to transfer spin polarization from the electrons to the nuclear spins leading to a highly polarized state thereof. Furthermore uses of correspondingly prepared samples for NMR, MRS and MRI experiments are proposed.Type: GrantFiled: March 14, 2013Date of Patent: October 30, 2018Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Tim Rolf Eichhorn, Christophe Roussel, Arnaud Comment
-
Publication number: 20160033590Abstract: A method for the preparation of a sample comprising highly polarized nuclear spins is proposed, comprising at least the following steps: a) provision of molecules with 1,2-dione structural units and/or molecules with 2,5-diene-1,4-dione structural units in the solid state; b) generation of radicals from these molecules by photo induced electron transfer by a first electromagnetic irradiation in the visible or ultraviolet frequency range in the solid state; c) dynamic nuclear polarization in the presence of a magnetic field in the solid state by applying a second electromagnetic irradiation with a frequency adapted to transfer spin polarization from the electrons to the nuclear spins leading to a highly polarized state thereof. Furthermore uses of correspondingly prepared samples for NMR, MRS and MRI experiments are proposed.Type: ApplicationFiled: March 14, 2013Publication date: February 4, 2016Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Tim Rolf EICHHORN, Christophe ROUSSEL, Arnaud COMMENT
-
Patent number: 8080784Abstract: A plate for matrix-assisted laser desorption ionization (MALDI) mass spectrometry comprising an electrically conductive substrate (1) covered with a light sensitive matrix (2), the matrix (2) comprising a light absorber, a charge carrier, a probe molecule and a photo-sensitizer (3) arranged to oxidize the probe molecule when irradiated with light (4).Type: GrantFiled: January 10, 2008Date of Patent: December 20, 2011Assignee: Ecole Polytechnique Federale de LausanneInventors: Qiao Liang, Pengyuan Yang, Baohong Liu, Niels Lion, Christophe Roussel, Hubert Hugues Girault
-
Publication number: 20100248388Abstract: A plate for laser desorption ionization mass spectrometry comprising an electrically conductive substrate (1) covered with an array of spots of sintered nanoparticles (2) acting as a highly efficient sorbing phase, a very sensitive photo-reactive phase and an ionization device when covered by an organic matrix or by a hole conductor or electron donor instead of an organic matrix.Type: ApplicationFiled: July 1, 2008Publication date: September 30, 2010Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventors: Baohong Liu, Qiao Liang, Niels Lion, Jingjing Wan, Michel Prudent, Christophe Roussel, Pengyuan Yang, Hubert Hugues Girault
-
Publication number: 20100090105Abstract: A plate for matrix-assisted laser desorption ionization (MALDI) mass spectrometry comprising an electrically conductive substrate (1) covered with a light sensitive matrix (2), the matrix (2) comprising a light absorber, a charge carrier, a probe molecule and a photo-sensitizer (3) arranged to oxidise the probe molecule when irradiated with light (4).Type: ApplicationFiled: January 10, 2008Publication date: April 15, 2010Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventors: Qiao Liang, Pengyuan Yang, Baohong Liu, Niels Lion, Christophe Roussel, Hubert Hugues Girault