Patents by Inventor Gilles Troussel
Gilles Troussel 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).
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Patent number: 10784858Abstract: A driver circuit includes a supply node, a control node configured to receive a control signal, and an output node. An output transistor is coupled to the output node to provide the CAN bus drive signal via the current path through the output transistor. A current mirror is in a current line from the supply node to the output node through the output transistor. The current line includes an intermediate portion between the current mirror and the output transistor. The current mirror is configured to be switched, as a function of the control signal between a first, dominant mode, with the CAN bus drive signal applied to the output node via the output transistor, and a second, recessive mode, with the output transistor providing a high output impedance at the output node.Type: GrantFiled: January 16, 2019Date of Patent: September 22, 2020Assignees: STMICROELECTRONICS S.R.L., STMICROELECTRONICS (GRENOBLE 2) SASInventors: Sergio Lecce, Gilles Troussel
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Publication number: 20190229726Abstract: A driver circuit includes a supply node, a control node configured to receive a control signal, and an output node. An output transistor is coupled to the output node to provide the CAN bus drive signal via the current path through the output transistor. A current mirror is in a current line from the supply node to the output node through the output transistor. The current line includes an intermediate portion between the current mirror and the output transistor. The current mirror is configured to be switched, as a function of the control signal between a first, dominant mode, with the CAN bus drive signal applied to the output node via the output transistor, and a second, recessive mode, with the output transistor providing a high output impedance at the output node.Type: ApplicationFiled: January 16, 2019Publication date: July 25, 2019Inventors: Sergio Lecce, Gilles Troussel
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Patent number: 8525755Abstract: A control device for a matrix plasma display screen has a row driver circuit capable of sequentially selecting the rows of the matrix and a column driver circuit, for each column of the matrix, with an individual column driver unit that has at least a first transistor of the MOS type capable of emitting, towards each column of a desired set of columns, a state change signal in order to allow the transition of the set from a first state towards a second state, and a controller.Type: GrantFiled: January 19, 2007Date of Patent: September 3, 2013Assignee: STMicroelectronics SAInventors: Jean-Raphaël Bezal, Jean-Marie Permezel, Gilles Troussel
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Patent number: 8174295Abstract: An embodiment of a discharge circuit comprises an output circuit with one output connected to an electrical load to absorb a discharge current given by the load when a logic signal commands a discharge of the load. The discharge circuit also comprises a control circuit to give the output circuit an appropriate control signal so that a slope of an output potential of the output circuit diminishes gradually when the logic signal commands a discharge of the load. Limiting the slope of the output potential gradually (and not suddenly) may limit the electromagnetic radiation generated by these variations.Type: GrantFiled: October 27, 2010Date of Patent: May 8, 2012Assignee: STMicroelectronics, SAInventors: Francois Ravatin, Gilles Troussel
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Patent number: 8138993Abstract: The control of a plasma display panel, successively comprises, at least for all the cells of a current line having to switch state for the next line: a connection of a terminal of application of an intermediary supply voltage to output terminals of column control stages corresponding to the junction points of first and second switches between two terminals of application of a supply voltage, to perform a precharge or a predischarge of the screen cells; a disconnection of said output terminals from this intermediary voltage; and a connection of each output terminal to a first or to a second power supply voltage by the turning-on of the first or second switch of the corresponding stage, according to a luminance reference value, delayed with respect to the disconnection of the corresponding output terminal from the terminal of application of the intermediary voltage.Type: GrantFiled: May 24, 2007Date of Patent: March 20, 2012Assignee: STMicroelectronics SAInventors: Jerome Bourgoin, Gilles Troussel
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Publication number: 20110037752Abstract: An embodiment of a discharge circuit comprises an output circuit with one output connected to an electrical load to absorb a discharge current given by the load when a logic signal commands a discharge of the load. The discharge circuit also comprises a control circuit to give the output circuit an appropriate control signal so that a slope of an output potential of the output circuit diminishes gradually when the logic signal commands a discharge of the load. Limiting the slope of the output potential gradually (and not suddenly) may limit the electromagnetic radiation generated by these variations.Type: ApplicationFiled: October 27, 2010Publication date: February 17, 2011Applicant: STMicroelectronics, SAInventors: François RAVATIN, Gilles Troussel
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Patent number: 7843238Abstract: An embodiment of a discharge circuit comprises an output circuit with one output connected to an electrical load to absorb a discharge current given by the load when a logic signal commands a discharge of the load. The discharge circuit also comprises a control circuit to give the output circuit an appropriate control signal so that a slope of an output potential of the output circuit diminishes gradually when the logic signal commands a discharge of the load. Limiting the slope of the output potential gradually (and not suddenly) may limit the electromagnetic radiation generated by these variations.Type: GrantFiled: May 18, 2007Date of Patent: November 30, 2010Assignee: STMicroelectronics, SAInventors: François Ravatin, Gilles Troussel
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Publication number: 20100245329Abstract: A method and circuit to control a circuit for addressing at least one line electrode of a plasma display panel having, for each line, a line selection stage formed of two switches in series between two input terminals of the selection stage, the method including alternating use of the two switches of the selection stage of each line to flow a current from or to an inductive element of the addressing circuit without connecting the input terminals together.Type: ApplicationFiled: June 3, 2010Publication date: September 30, 2010Applicant: STMICROELECTRONICS S.A.Inventors: Jean-Raphael Bezal, Gilles Troussel, Jean-Marie Permezel
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Patent number: 7750870Abstract: A method and circuit to control of a circuit for addressing at least one line electrode of a plasma display panel having, for each line, a line selection stage formed of two switches in series between two input terminals of the selection stage, the method including use of a first one of the two switches of the selection stage of each line to flow a current from or to an inductive element of the addressing circuit.Type: GrantFiled: March 3, 2006Date of Patent: July 6, 2010Assignee: STMicroelectronics SAInventors: Jean-Raphael Bezal, Gilles Troussel, Jean-Marie Permezel
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Patent number: 7671854Abstract: A high-potential output stage includes an output circuit to power a load with a variable high potential when it receives a low-level active input logic signal. It also includes a driving circuit which produces a high-level control logic signal as a function of the input logic signal to drive the output circuit which is powered by a DC high potential. The output stage also synchronizes the input logic signal with variations of the variable high potential.Type: GrantFiled: November 18, 2005Date of Patent: March 2, 2010Assignee: STMicroelectronics SAInventors: Jean-Marie Permezel, Gilles Troussel, Eric Benoit
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Patent number: 7504873Abstract: A voltage level shifting device includes an activation or deactivation control input, first and second output nodes, a capacitor coupled between the output nodes, a high-voltage transistor for charging the capacitor, a high-voltage transistor for discharging the capacitor, a comparator which generates a charge blocking signal and a discharge signal, and a control device which is operative to cause the charging transistor to be blocked when a charge blocking signal is generated and to turn on the discharging transistor upon receipt of a deactivation control signal and when a discharge signal is generated.Type: GrantFiled: April 7, 2006Date of Patent: March 17, 2009Assignee: STMicroelectronics SAInventors: Jérôme Bourgoin, Gilles Troussel
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Publication number: 20090051626Abstract: A method controls electrodes for addressing a display panel having pixels distributed in lines and in columns, each addressing electrode being associated with a column in the panel, each line in the panel being successively selected for the addressing of the pixels in the line. The method includes maintaining, at least for part of the selection of each line, of at least one addressing electrode at a given reference voltage when the pixel of the line associated with the at least one addressing electrode is to be addressed, and setting to high impedance of the at least one addressing electrode between the successive selection of two lines having their pixels associated with the at least one addressing electrode which are to be addressed.Type: ApplicationFiled: March 6, 2008Publication date: February 26, 2009Applicant: STMICROELECTRONICS SAInventors: Jean-Raphael Bezal, Gilles Troussel
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Publication number: 20080007308Abstract: An embodiment of a discharge circuit comprises an output circuit with one output connected to an electrical load to absorb a discharge current given by the load when a logic signal commands a discharge of the load. The discharge circuit also comprises a control circuit to give the output circuit an appropriate control signal so that a slope of an output potential of the output circuit diminishes gradually when the logic signal commands a discharge of the load. Limiting the slope of the output potential gradually (and not suddenly) may limit the electromagnetic radiation generated by these variations.Type: ApplicationFiled: May 18, 2007Publication date: January 10, 2008Inventors: Francois Ravatin, Gilles Troussel
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Publication number: 20070285355Abstract: The control of a plasma display panel, successively comprises, at least for all the cells of a current line having to switch state for the next line: a connection of a terminal of application of an intermediary supply voltage to output terminals of column control stages corresponding to the junction points of first and second switches between two terminals of application of a supply voltage, to perform a precharge or a predischarge of the screen cells; a disconnection of said output terminals from this intermediary voltage; and a connection of each output terminal to a first or to a second power supply voltage by the turning-on of the first or second switch of the corresponding stage, according to a luminance reference value, delayed with respect to the disconnection of the corresponding output terminal from the terminal of application of the intermediary voltage.Type: ApplicationFiled: May 24, 2007Publication date: December 13, 2007Applicant: STMICROELECTRONICS SAInventors: Jerome Bourgoin, Gilles Troussel
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Publication number: 20060238232Abstract: A voltage level shifting device includes an activation or deactivation control input, first and second output nodes, a capacitor coupled between the output nodes, a high-voltage transistor for charging the capacitor, a high-voltage transistor for discharging the capacitor, a comparator which generates a charge blocking signal and a discharge signal, and a control device which is operative to cause the charging transistor to be blocked when a charge blocking signal is generated and to turn on the discharging transistor upon receipt of a deactivation control signal and when a discharge signal is generated.Type: ApplicationFiled: April 7, 2006Publication date: October 26, 2006Inventors: Jerome Bourgoin, Gilles Troussel
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Patent number: 7122968Abstract: The invention concerns a drive circuit for a plasma panel consisting of cells arranged at the intersections of lines and columns, comprising, for each column of the panel, a column drive unit (14?) for selecting the column by applying a voltage window, the column having a different capacitance (C2) depending on whether or not the neighboring columns are selected, each drive unit (14?) comprising first elements (T1, C, CS1) for changing the capacitance in a first predetermined time interval during the low-to-high transition of the voltage window, and second elements (T2, 28) for discharging said capacitance in a second predetermined time interval during the high-to-low transition of the voltage window, the second elements being controlled on the basis of an estimation of the capacitance obtained from data (Qi?1, Qi+1) indicating whether or not the neighboring columns of said columns have been selected.Type: GrantFiled: November 14, 2001Date of Patent: October 17, 2006Assignee: STMicroelectronics S.A.Inventors: Céline Mas, Gilles Troussel, Eric Benoit
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Publication number: 20060196855Abstract: A method and circuit to control of a circuit for addressing at least one line electrode of a plasma display panel having, for each line, a line selection stage formed of two switches in series between two input terminals of the selection stage, the method including use of a first one of the two switches of the selection stage of each line to flow a current from or to an inductive element of the addressing circuit.Type: ApplicationFiled: March 3, 2006Publication date: September 7, 2006Applicant: STMicroelectronics S.A.Inventors: Jean-Raphael Bezal, Gilles Troussel, Jean-Marie Permezel
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Publication number: 20060139244Abstract: The method is for controlling a plasma matrix screen, including sequential selection of rows of the matrix and, for a selected row, deselection of a plurality of columns of the matrix which were previously selected during the selection of a previous row. To avoid excessive steepness of the falling edges of the column potentials, the previously selected columns are non-simultaneously deselected.Type: ApplicationFiled: December 22, 2005Publication date: June 29, 2006Applicant: STMicroelectronics SAInventors: Jean-Raphael Bezal, Jean-Marie Permezel, Gilles Troussel
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Publication number: 20060132478Abstract: A high-potential output stage includes an output circuit to power a load with a variable high potential when it receives a low-level active input logic signal. It also includes a driving circuit which produces a high-level control logic signal as a function of the input logic signal to drive the output circuit which is powered by a DC high potential. The output stage also synchronizes the input logic signal with variations of the variable high potential.Type: ApplicationFiled: November 18, 2005Publication date: June 22, 2006Inventors: Jean-Marie Permezel, Gilles Troussel, Eric Benoit
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Patent number: 6853146Abstract: A method for controlling cells of a plasma screen of array type, formed of cells arranged at the intersections of lines and columns, including the step of sequentially applying to each line an activation potential and, during the activation of a line, applying an activation potential to selected columns, in which, while a line is activated, the selected columns are non-simultaneously activated.Type: GrantFiled: August 9, 2001Date of Patent: February 8, 2005Assignee: STMicroelectronics S.A.Inventors: Gilles Troussel, Céline Mas, Eric Benoit