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公开(公告)号：US11976941B2
公开(公告)日：2024-05-07
申请号：US17442390
申请日：2020-03-09
Inventor： Arnaud Casagrande
CPC classification number: G01C22/002 , G01P3/487
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 wheel axis of rotation as the magnet. The sensor passes in front of the magnet to generate an induced voltage pulse at each passage. The induced voltage is rectified and stored on a capacitor. Energy recovery during the sensor passing in front of the magnet allows powering of the measuring circuit. The parameter is calculated in the calculation unit clocked by an oscillator based on the received induced voltage pulses by knowing the bicycle wheel diameter. 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：US20190387288A1
公开(公告)日：2019-12-19
申请号：US16397254
申请日：2019-04-29
Inventor： Thierry Scordilis , Arnaud Casagrande , Luca De Rosa , Jean-Luc Arend , Jean Gorisse , Zoran Randjelovic
Abstract: A method for providing information about a mechanical wristwatch, including the following steps, performed by the wristwatch: harvesting an intermittently available external energy, storing the harvested energy, at the end of a predefined period of time, generating an analysis report on an activity of the owner of the wristwatch, based at least on the times and durations of availability of the external energy, when or after the harvested energy quantity reaches a threshold, the threshold being on or above an energy level required to power a transmission unit of the wristwatch, wirelessly transmitting the analysis report to a distant reader with the transmission unit.
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3.发明授权公开(公告)号：US09553748B2
公开(公告)日：2017-01-24
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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公开(公告)号：US10742332B2
公开(公告)日：2020-08-11
申请号：US16658224
申请日：2019-10-21
Inventor： Arnaud Casagrande , Thierry Scordilis , Luca De Rosa , Jean Gorisse , Jean-Luc Arend
Abstract: A transmitter-receiver includes an electronic chip a mixer for mixing the frequency of a received radio frequency signal with that of an oscillating signal supplied by a first frequency synthesizer in, a switch having two inputs connected to an output of the mixer and to an auxiliary input terminal, a filter and gain stage connected to the output of the switch, and a modulator-demodulator connected to the output of the filter and gain stage. The first frequency synthesizer is connected between the output of the modulator-demodulator and radio frequency input and output terminal, and configured to supply a frequency-modulated signal to the radio frequency input and output terminal. The electronic chip further includes a second frequency synthesizer connected between the output of the modulator-demodulator and an auxiliary output terminal, and configured to synthesize a modulated low-frequency signal supplied by the auxiliary output terminal, whereby the center value of the low frequency is equal to the value of the intermediate frequency.
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公开(公告)号：US10006980B2
公开(公告)日：2018-06-26
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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Patent Agency Ranking
6.发明授权Electronic circuit with self-calibrated PTAT current reference and method for actuating the same 有权具有自校准PTAT电流参考的电子电路及其驱动方法公开(公告)号：US09442509B2
公开(公告)日：2016-09-13
申请号：US14558839
申请日：2014-12-03
Inventor： Arnaud Casagrande , Jean-Luc Arend
Abstract: The electronic circuit with a self-calibrated PTAT current reference includes a PTAT current generator dependent on at least one integrated resistor for supplying a PTAT output current. It further includes a reference current generator dependent on at least one switched capacitor resistor, for supplying a reference current. The reference current and the PTAT output current are compared in a comparator so as to digitally adapt the programmable integrated resistor, or to digitally adapt the dimensional ratio of the transistors of a current mirror in the PTAT current generator, to supply the adapted PTAT output current.
Abstract translation: 具有自校准PTAT电流参考的电子电路包括取决于至少一个用于提供PTAT输出电流的集成电阻器的PTAT电流发生器。 它还包括一个参考电流发生器，它取决于至少一个开关电容电阻器，用于提供参考电流。 参考电流和PTAT输出电流在比较器中进行比较，以便对可编程集成电阻进行数字调适，或数字调整PTAT电流发生器中的电流镜的晶体管的尺寸比，以提供适配的PTAT输出电流 。
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公开(公告)号：US09419660B2
公开(公告)日：2016-08-16
申请号：US14530296
申请日：2014-10-31
Inventor： Arnaud Casagrande , Carlos Velasquez , Emil Zellweger
CPC classification number: H04B1/1027 , H04B15/06 , H04B17/21 , H04B17/29 , H04B2001/1054
Abstract: The signal receiver has means to suppress at least one higher harmonic component from a MEMS or crystal oscillator having a reference resonator in filtered intermediate signals of a signal receiver. The signal receiver comprises an antenna for receiving electromagnetic signals, a low noise amplifier for amplifying signals received by the antenna, one MEMS or crystal oscillator comprising a reference resonator to generate an oscillating signal with a predefined duty-cycle, a mixer for mixing the amplified and received signals with the oscillating signal to generate intermediate signals, a band-pass filter to filter the intermediate signals, and a duty-cycle controller coupled to the MEMS or crystal oscillator and coupled to the output of the band-pass filter to analyze the spectrum of the filtered intermediate signals and to modify the duty-cycle of the oscillating signal in response to the spectrum analysis of the filtered intermediate signals.
Abstract translation: 信号接收机具有在信号接收机的经滤波的中间信号中抑制来自具有参考谐振器的MEMS或晶体振荡器的至少一个高次谐波分量的装置。 信号接收机包括用于接收电磁信号的天线，用于放大由天线接收的信号的低噪声放大器，包括参考谐振器的一个MEMS或晶体振荡器，以产生具有预定占空比的振荡信号;混频器，用于混合放大 并且用振荡信号接收信号以产生中间信号，滤波中间信号的带通滤波器和耦合到MEMS或晶体振荡器并耦合到带通滤波器的输出的占空比控制器，以分析 频谱，并响应于滤波的中间信号的频谱分析来修改振荡信号的占空比。
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公开(公告)号：US11251750B1
公开(公告)日：2022-02-15
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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9.发明授权公开(公告)号：US10690765B2
公开(公告)日：2020-06-23
申请号：US15710238
申请日：2017-09-20
Inventor： Arnaud Casagrande , Carlos Velasquez , Philippe Duc
Abstract: For the process for determining a distance, there is provided a succession of coded signals at high frequency transmitted between a base station and a wearable object. A preparation of a response signal is conducted in the wearable object on reception of the first synchronisation signal after activation of the wearable object. A transmission of successive coded signals at high frequency from the wearable object is conducted for the station, of which the last response signal is scrambled by a modulation of data on the last signal received at a high transfer rate from the station. An analysis is conducted in a processing unit of the base station after reception of the signals from the wearable object to accurately determine the distance separating the base station from the recognised wearable object.
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公开(公告)号：US10003414B2
公开(公告)日：2018-06-19
申请号：US15345811
申请日：2016-11-08
Inventor： Arnaud Casagrande
IPC: H04B1/38 , H04B17/11 , H04B17/21 , H03F3/195 , H03F3/24 , H03G3/30 , H03L7/089 , H03L7/091 , H03L7/099 , H03L7/185 , H03C3/09
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 synthesizer 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-analog converter and transmitting the output signal from a loop filter of the synthesizer 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-analog converter, and the digital-to-analog 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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