Patents by Inventor Christophe Moreaux
Christophe Moreaux 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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Publication number: 20240062032Abstract: Provided is a contactless electronic system configured for contactless communications with a reader over an electromagnetic field and comprising a power supply, a current monitor, a processing system comprising a hardware processor configured for performing operations, a dynamic extra current loader and a clock generator, wherein the power supply includes a clamp circuit, and wherein, continuously until the end of an execution phase of said hardware processor. The current monitor is configured for determining the maximal current Imax that can be provided by the power supply to the processing system from the electromagnetic field by comparing a current into the clamp circuit to at least one predetermined threshold. Other embodiments disclosed.Type: ApplicationFiled: September 30, 2021Publication date: February 22, 2024Applicant: THALES DIS FRANCE SASInventors: Benjamin DUVAL, Olivier FOURQUIN, Christophe MOREAUX, Laurent FABRE
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Publication number: 20230016826Abstract: Provided is a contactless electronic system configured for contactless communications with a reader over an electromagnetic field and comprising a power supply, a current monitor, a processing system comprising a hardware processor configured for performing operations, a dynamic extra current loader and a clock generator. The current monitor is configured for determining maximal current Imax that can be provided by the power supply to the processing system from the electromagnetic field, and is configured for comparing, during an execution phase of said hardware processor, said determined maximal current Imax and a current drawn by the processing system.Type: ApplicationFiled: December 4, 2020Publication date: January 19, 2023Applicant: THALES DIS DESIGN SERVICES SASInventors: Benjamin DUVAL, Olivier FOURQUIN, Christophe MOREAUX, Laurent FABRE
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Patent number: 9524408Abstract: A method is provided for managing the operating mode of an electronic tag, including at least one communication module for communicating with at least one control device and a memory for storing at least one tag identifier specific to the tag and transmittable by the tag to the at least one control device. The method includes, following reception of a deactivation instruction upon which the tag goes from an activated state to a deactivated state, a deactivation step, in which the transmission, to the control device, of the tag identifier is inhibited and in which the tag responds to a reactivation instruction by re-enabling the transmission of the tag identifier to the control device.Type: GrantFiled: June 27, 2013Date of Patent: December 20, 2016Assignees: ISSM, ORANGEInventors: Caroline Fenzy Peyre, Christophe Moreaux
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Publication number: 20150137954Abstract: A method is provided for managing the operating mode of an electronic tag, including at least one communication module for communicating with at least one control device and a memory for storing at least one tag identifier specific to the tag and transmittable by the tag to the at least one control device. The method includes, following reception of a deactivation instruction upon which the tag goes from an activated state to a deactivated state, a deactivation step, in which the transmission, to the control device, of the tag identifier is inhibited and in which the tag responds to a reactivation instruction by re-enabling the transmission of the tag identifier to the control device.Type: ApplicationFiled: June 27, 2013Publication date: May 21, 2015Inventors: Caroline Fenzy Peyre, Christophe Moreaux
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Patent number: 8896368Abstract: An electromagnetic transponder includes an antenna circuit, a load, and a charge pump transistor having a current path coupled between the antenna circuit and the load. During operation, a retromodulated signal is transmitted at a first level by biasing the charge pump transistor during a first time period such that an impedance of the antenna circuit has a first impedance value and current flows from the antenna circuit to the load. A retromodulated signal at a second level is transmitted by biasing the charge pump transistor during a second time period such that the impedance of the antenna circuit has a second impedance value different than the first impedance value and current flows from the antenna circuit to the load. The retromodulated signals are transmitted at the first and second levels in a sequence determined to transmit information from the electromagnetic transponder.Type: GrantFiled: November 26, 2013Date of Patent: November 25, 2014Assignee: STMicroelectronics (Rousset) SASInventors: Gilles Bas, Christophe Moreaux, Gary Seigneuret
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Publication number: 20140077869Abstract: An electromagnetic transponder includes an antenna circuit, a load, and a charge pump transistor having a current path coupled between the antenna circuit and the load. During operation, a retromodulated signal is transmitted at a first level by biasing the charge pump transistor during a first time period such that an impedance of the antenna circuit has a first impedance value and current flows from the antenna circuit to the load. A retromodulated signal at a second level is transmitted by biasing the charge pump transistor during a second time period such that the impedance of the antenna circuit has a second impedance value different than the first impedance value and current flows from the antenna circuit to the load. The retromodulated signals are transmitted at the first and second levels in a sequence determined to transmit information from the electromagnetic transponder.Type: ApplicationFiled: November 26, 2013Publication date: March 20, 2014Applicant: STMICROELECTRONICS (ROUSSET) SASInventors: Gilles Bas, Christophe Moreaux, Gary Seigneuret
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Patent number: 8659347Abstract: An electromagnetic transponder includes an antenna circuit capable of providing signals to a charge pump. The pump includes a first transistor connected to a first capacitor. The transponder also includes means for applying a voltage alternating between first and second values between the gate and the conduction terminal on the side of the first capacitor of the first transistor.Type: GrantFiled: November 9, 2011Date of Patent: February 25, 2014Assignee: STMicroelectronics (Rousset) SASInventors: Gilles Bas, Christophe Moreaux, Gary Seigneuret
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Passive contactless integrated circuit comprising a flag for monitoring an erase/programming voltage
Patent number: 8410910Abstract: A passive contactless integrated circuit includes an electrically programmable non-volatile data memory (MEM), a charge accumulation booster circuit for supplying a high voltage necessary for writing data in the memory. The integrated circuit includes a volatile memory point for memorizing an indicator flag, and circuitry for modifying the value of the indicator flag when the high voltage reaches a critical threshold for the first time after activating the booster circuit.Type: GrantFiled: March 6, 2008Date of Patent: April 2, 2013Assignee: STMicroelectronics SAInventors: David Naura, Christophe Moreaux, Ahmed Kari, Pierre Rizzo -
Publication number: 20120119822Abstract: An electromagnetic transponder includes an antenna circuit capable of providing signals to a charge pump. The pump includes a first transistor connected to a first capacitor. The transponder also includes means for applying a voltage alternating between first and second values between the gate and the conduction terminal on the side of the first capacitor of the first transistor.Type: ApplicationFiled: November 9, 2011Publication date: May 17, 2012Applicant: STMicroelectronics (Rousset) SASInventors: Gilles Bas, Christophe Moreaux, Gary Seigneuret
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Patent number: 8180992Abstract: A method for configuring a memory space, the method including reading a piece of configuration information in the memory space, determining a division of at least one part of the memory space into memory banks according to the configuration information read; and allocating to each of the memory banks an access number to be used to access a data location in the memory bank, in combination with a logic address of the location in the memory bank.Type: GrantFiled: February 25, 2008Date of Patent: May 15, 2012Assignee: STMicroelectronics S.A.Inventors: Christophe Moreaux, Ahmed Kari, David Naura, Pierre Rizzo
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Patent number: 8111140Abstract: An electromagnetic transponder and a method for controlling by pulse trains a switch for modulating the load of this transponder in an electromagnetic field from which it extracts its power supply, the duty ratio of the pulses being controlled according to the transponder supply voltage.Type: GrantFiled: May 16, 2005Date of Patent: February 7, 2012Assignee: STMicroelectronics SAInventors: Pierre Rizzo, Christophe Moreaux
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Patent number: 8028149Abstract: A method of reading a group of memory words from an integrated circuit memory of a contactless tag, comprising the sending by a remote interrogation unit to the contactless tag of a specific command for reading the group of memory words from a given start address, the initialization of an address counter for the contactless tag to the value of the given start address, and the sending by the contactless tag of the memory word at the start address, as well as an iterative process comprising in succession a first step of sending by the remote interrogation unit to the contactless tag of an incrementation marker recognizable by the contactless tag, a second step of incrementation of the address counter for the contactless tag in response to the incrementation marker, and a third step of sending by the contactless tag to the remote interrogation unit of a data frame comprising the memory word stored in the memory at the address pointed at by the current value of the address counter.Type: GrantFiled: May 18, 2005Date of Patent: September 27, 2011Assignee: STMicroelectronics SAInventors: Christophe Moreaux, Pierre Rizzo
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Patent number: 8022889Abstract: A method for modulating the impedance of an antenna circuit supplying pump signals to a charge pump comprising at least one first pump stage and one last pump stage, the last pump stage supplying a continuous voltage. The output of the first pump stage is short-circuited by means of a switch and the last pump stage goes on pumping electric charges and supplying the continuous voltage. Application in particular to RFID passive transponders.Type: GrantFiled: February 27, 2008Date of Patent: September 20, 2011Assignee: STMicroelectronics SAInventors: Pierre Rizzo, Christophe Moreaux, David Naura, Ahmed Kari
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Patent number: 7881124Abstract: A method is provided for block writing in an electrically programmable non-volatile memory, in which a block to be written in the memory includes at least one word. The method includes determining a word write time by dividing a fixed block write time by the number of words in the block to be written, and controlling the memory to successively write each word in the memory during the write time.Type: GrantFiled: April 2, 2008Date of Patent: February 1, 2011Assignee: STMicroelectronics SAInventors: Ahmed Kari, Christophe Moreaux, David Naura, Pierre Rizzo
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Patent number: 7801940Abstract: A method divides a number N1 by a number which can be written in the form 2n/k, n and k being whole numbers, and obtains a result N2. The result N2 is calculated by adding terms N1*Ki/2n-i for i ranging from 0 to N, the terms Ki being the constituent bits K0, K1, K2, . . . KN-1 of the number k expressed in binary. The method can be applied particularly to the production of a calibration circuit for calibrating a clock signal in a UHF transponder.Type: GrantFiled: December 19, 2006Date of Patent: September 21, 2010Assignee: STMicroelectronics SAInventors: Christophe Moreaux, Ahmed Kari, David Naura, Pierre Rizzo
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Patent number: 7679945Abstract: A persistent volatile memory cell memorizes a binary datum during a retention time independent from a supply voltage of the memory cell. The memory cell comprises a capacitive memory point supplying a persistent voltage and having a determined discharge time, a switch for triggering the discharge of the memory point when an erase signal has an active value, a switch for triggering the charge of the memory point when a write signal has an active value, and a sense-amplifier circuit having an input receiving the persistent voltage, and an output supplying the binary datum. The memory cell can be applied to the management of an inventory flag in a contactless integrated circuit.Type: GrantFiled: March 6, 2008Date of Patent: March 16, 2010Assignee: STMicroelectronics SAInventors: Pierre Rizzo, Christophe Moreaux, David Naura, Ahmed Kari
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Patent number: 7675341Abstract: A method and device for generating a clock signal, the method including measuring, using a first clock signal, a characteristic of a reference event in a received signal, determining, using the first clock signal, a variation of a characteristic of a second event in a received signal, correcting the measurement according to the variation of the characteristic of the second event, and generating a second clock signal using the first clock signal according to the corrected measurement.Type: GrantFiled: March 3, 2008Date of Patent: March 9, 2010Assignee: STMicroelectronics SAInventors: Christophe Moreaux, Ahmed Kari, David Naura, Pierre Rizzo
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Patent number: 7602878Abstract: A binary frequency divider includes a counter paced by an input signal, means for comparing a counting value with first and second threshold values and supplying first and second control signals synchronized with variation edges of a first type of the input signal. The divider includes means for supplying at least one third control signal shifted by a half-period of the input signal in relation to one of the first or second control signals, and control means for generating the output signal using control signals chosen according to the value of at least one least significant bit of the division setpoint. Application is mainly but not exclusively to UHF transponders.Type: GrantFiled: June 18, 2008Date of Patent: October 13, 2009Assignee: STMicroelectronics S.A.Inventors: Christophe Moreaux, Ahmed Kari, David Naura, Pierre Rizzo
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Publication number: 20090094410Abstract: A method is provided for block writing in an electrically programmable non-volatile memory, in which a block to be written in the memory includes at least one word. The method includes determining a word write time by dividing a fixed block write time by the number of words in the block to be written, and controlling the memory to successively write each word in the memory during the write time.Type: ApplicationFiled: April 2, 2008Publication date: April 9, 2009Applicant: STMICROELECTRONICS S.A.Inventors: Ahmed Kari, Christophe Moreaux, David Naura, Pierre Rizzo
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PASSIVE CONTACTLESS INTEGRATED CIRCUIT COMPRISING A FLAG FOR MONITORING AN ERASE/PROGRAMMING VOLTAGE
Publication number: 20090066483Abstract: A passive contactless integrated circuit includes an electrically programmable non-volatile data memory (MEM), a charge accumulation booster circuit for supplying a high voltage necessary for writing data in the memory. The integrated circuit includes a volatile memory point for memorizing an indicator flag, and circuitry for modifying the value of the indicator flag when the high voltage reaches a critical threshold for the first time after activating the booster circuit.Type: ApplicationFiled: March 6, 2008Publication date: March 12, 2009Applicant: STMicroelectronics S.A.Inventors: David Naura, Christophe Moreaux, Ahmed Kari, Pierre Rizzo