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公开(公告)号：US20220170762A1
公开(公告)日：2022-06-02
申请号：US17442390
申请日：2020-03-09
Inventor： Arnaud CASAGRANDE
Abstract: A method and system for measuring a physical parameter, such as speed and/or distance travelled by a bicycle, includes a permanent magnet disposed on a front fork and a measuring circuit with a magnetic sensor disposed on a rim of the wheel at the same distance from the axis of rotation of the wheel as the magnet. The sensor passes in front of the magnet, in order to generate an induced voltage pulse at each passage. The induced voltage is rectified and stored on a capacitor to power the measuring circuit. A calculation of the parameter is performed in the calculation unit clocked by an oscillator based on the received induced voltage pulses received by knowing the value of the diameter of the bicycle wheel. Measurements performed from the measuring circuit are transmitted to a portable device carried by the user or mounted on the bicycle to be displayed.
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公开(公告)号：US20220077822A1
公开(公告)日：2022-03-10
申请号：US17326434
申请日：2021-05-21
Inventor： Arnaud CASAGRANDE , Jean-Luc AREND
Abstract: A crystal oscillator and a startup method for initiating operation of a crystal oscillator, the crystal oscillator includes an oscillator structure including a crystal resonator and an electronic oscillator circuit connected to the crystal resonator, the oscillator structure having a first terminal and a second terminal, a startup controller operable to initiate an oscillation in the oscillator structure by exciting the oscillator structure with a sequence of excitation signals derivable from a clock signal and when triggered by a timing signal, the sequence of excitation signals includes at least a first excitation signal and a second excitation signal, a comparator including a first and a second input terminal and an output terminal, the first input terminal being connected to the first terminal and wherein the second input terminal is connected to the second terminal.
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公开(公告)号：US20210191559A1
公开(公告)日：2021-06-24
申请号：US16950077
申请日：2020-11-17
Inventor： Jean-Nicolas PFEUTI , Arnaud CASAGRANDE
IPC: G06F3/041 , G06F3/0488 , G06F3/044 , G06N20/00
Abstract: A method for detecting the presence and/or determine a position of an object on a measurement surface of an electronic device. The process includes: providing oscillating signal(s) at input points which are different and spaced from the array of electrodes in a detection area of the measurement surface; receiving oscillating signal(s) having passed through the array, which defines a transfer function of the signals, in output point(s) which are different and spaced from the array of electrodes in a detection area of the measurement surface; measuring a coupling or an attenuation induced by the presence on one or more oscillating signals passing through the array of electrodes of an object placed on the measurement surface in order to determine the position of the object in the detection area of the measurement surface depending on the modification of the transfer function of the array of electrodes.
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14.发明申请公开(公告)号：US20180093642A1
公开(公告)日：2018-04-05
申请号：US15723497
申请日：2017-10-03
Inventor： Arnaud CASAGRANDE , Carlos VELASQUEZ , Philippe Duc
CPC classification number: B60R25/24 , G01S13/32 , G01S13/76 , G01S13/82 , G01S13/825 , G06F21/34 , G07C9/00309 , G07C2009/00333 , G07C2009/00373 , G07C2009/00396 , G07C2009/00412 , G07C2009/00555 , G07C2009/00793 , G07C2209/06
Abstract: In the case of the process for secure access to a determined space, it is provided that after activation of the wearable object, a first coded signal is transmitted from the access or unlocking device, this first coded signal is received in the object and a coded response signal is transmitted with synchronisation to the device after a defined time of transmission. A processing of the coded response signal converted in the processing unit of the device is conducted in order to check the defined time delay and the response code of the wearable object and to determine the flight times of the signals between the device and the wearable object. The distance separating the wearable object and the access or unlocking device is thus calculated to authorise access to the determined space if the calculated distance is below a determined threshold after recognition of the wearable object.
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公开(公告)号：US20240329604A1
公开(公告)日：2024-10-03
申请号：US18415786
申请日：2024-01-18
Inventor： Arnaud CASAGRANDE , Jean-Pierre MIGNOT
CPC classification number: G04G21/00 , G04G13/021 , G08B21/088
Abstract: A transducer device of a wearable object or as a wearable object as such, includes means for generating a first action in a first operating mode related to a specific function of the wearable object under the control of a processor or microcontroller processing unit of an electronic circuit being powered by a DC voltage source. The means for generating is configured to generate a second communication action in a second operating mode different from the first operating mode so as to obtain a dual-mode transducer device. The second operating mode allows information or data communication signals to be communicated mainly to the outside of the transducer device so that it can be detected by a monitoring unit of a monitoring system, is able to establish communication, and can receive data or parameter signals from another transducer device. The communication signals are ultrasonic signals transmitted into a water body.
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Patent Agency Ranking
公开(公告)号：US20230101719A1
公开(公告)日：2023-03-30
申请号：US17857658
申请日：2022-07-05
Inventor： Arnaud CASAGRANDE , Jean-Luc AREND
Abstract: A correction method (500) for a super-regenerative receiver (100) being configured to resonate at at least one oscillator resonant frequency reference value (111) and comprising at least one control stage (130), at least one varactor (140), at least one reference system (150) and, at least one oscillator (110). The method includes at least one setup (510) of at least one reference signal value (158) by the at least one reference system (150), at least one comparison (560) of at least one oscillator frequency actual value (112) of the at least one oscillator (110) with the at least one reference signal value (158) by the at least one reference system (150) and at least one adjustment (570) of at least one gain of the at least one control stage (130).
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公开(公告)号：US20190188548A1
公开(公告)日：2019-06-20
申请号：US16181552
申请日：2018-11-06
Inventor： Arnaud CASAGRANDE , Jean GORISSE , Jean-Luc AREND
CPC classification number: G06K19/0701 , G06K7/10366 , G06K19/0702 , G06K19/0707 , G06K19/0716 , G06K19/0723
Abstract: A transponder-based module is placed on a mobile object so as to transmit information in proximity to a reading device. The transponder-based module includes at least one energy source for supplying the transponder-based module, at least one sensor for performing measurements of a physical parameter, and a microcontroller linked to the measurement sensor for processing the measurements of the sensor. The module further includes a memory unit for storing the measurement data of the measurements performed by the sensor, a receiver of an interrogation signal from a reading device in proximity, and a transmitter for transmitting measurement data stored at ultra-high frequency and at very high bitrate subsequent to the reception of an interrogation signal from the reading device in proximity.
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公开(公告)号：US20170141857A1
公开(公告)日：2017-05-18
申请号：US15345811
申请日：2016-11-08
Inventor： Arnaud CASAGRANDE
IPC: H04B17/11 , H03L7/099 , H03L7/089 , H04B17/21 , H03F3/195 , H03F3/24 , H03G3/30 , H03L7/185 , H03L7/091
CPC classification number: H04B17/11 , H03C3/0941 , H03C3/095 , H03C3/0975 , H03C3/0991 , H03F3/195 , H03F3/245 , H03F2200/294 , H03F2200/451 , H03G3/3047 , H03L7/0891 , H03L7/091 , H03L7/099 , H03L7/185 , H04B17/21
Abstract: The method for calibrating the frequency synthesiser using two-point FSK modulation consists, in a first phase, in supplying an excitation signal generated by a calibration unit to a sigma-delta modulator by deactivating a digital-to-analogue converter and transmitting the output signal from a loop filter of the synthesiser to the calibration unit, which digitally converts the incoming signal and offsets the phase shift between the excitation signal and the loop filter output signal in the calibration unit. In a second phase, the excitation signal is supplied to the sigma-delta modulator and to the activated digital-to-analogue converter, and the digital-to-analogue converter gain is calibrated by checking, in the calibration unit, the polarity of the loop filter output signal with respect to the excitation signal, and using a dichotomy algorithm.
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公开(公告)号：US20170139029A1
公开(公告)日：2017-05-18
申请号：US15296570
申请日：2016-10-18
Inventor： Arnaud CASAGRANDE
CPC classification number: G01S1/04 , G01S5/0205 , G01S5/021 , G01S5/06 , G01S13/878 , G01S19/42 , H04W64/003
Abstract: The method for localizing a beacon consists in transmitting, by a first transceiver, an initiation signal, which is received by second and third transceivers, in calculating, by means of said initiation signal, errors between a reference frequency of the first transceiver and reference frequencies of the second and third transceivers, in transmitting, by the beacon, a first pulsed signal, which is received by the first, second and third transceivers, in transmitting, by the first transceiver, a second pulsed signal, which is received by the second and third transceivers, in calculating differences in the times-of-flight of the first and second pulsed signals, each time-of-flight difference being calculated in a time base provided by a local oscillator of the first transceiver by means of reference frequency errors, and in calculating a beacon position by means of the times-of-flight.
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20.发明申请公开(公告)号：US20150263873A1
公开(公告)日：2015-09-17
申请号：US14645917
申请日：2015-03-12
Inventor： Arnaud CASAGRANDE
IPC: H04L27/227 , H04L27/14 , H04L27/233
CPC classification number: H04L27/2271 , H04L27/14 , H04L27/227 , H04L27/2273 , H04L27/2334
Abstract: The synchronous demodulator electronic circuit for phase modulation signals includes, in a control loop, a discrete Fourier transform unit for receiving the phase modulation signal to be demodulated, and means of recovering the carrier frequency of the phase modulation signal, so that the discrete Fourier transform unit performs in combination the operations of mixing and low-pass filtering the sampled phase modulation signal with at least one frequency and phase adapted digital conversion signal to supply at least one demodulated signal at the output of the discrete Fourier transform unit.
Abstract translation: 用于相位调制信号的同步解调器电子电路在控制环路中包括用于接收要解调的相位调制信号的离散付里叶变换单元和恢复相位调制信号的载波频率的装置，使得离散傅里叶变换 单元将采样相位调制信号的混合和低通滤波操作与至少一个频率和相位适配数字转换信号进行组合，以在离散付里叶变换单元的输出处提供至少一个解调信号。
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