Patents by Inventor Nicolas Sornin

Nicolas Sornin 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).

  • Publication number: 20180006680
    Abstract: A radio receiver for processing digital chirp spread-spectrum modulated signals that comprise a plurality of frequency chirps that are cyclically time-shifted replicas of a base chirp profile, said time-shifts being an encoded representation of a transmitted message. Includes a soft demapping unit that is adapted for working on fully populated as well as on partial modulation sets, and implements a timing error correction loop that acts back both in the time domain and in the frequency domain.
    Type: Application
    Filed: June 12, 2017
    Publication date: January 4, 2018
    Inventors: Olivier Bernard André SELLER, Nicolas SORNIN
  • Publication number: 20170324441
    Abstract: A wireless communication method in a network comprising a plurality of nodes including ranging masters, broadcasting a chirp-modulated ranging requests, and ranging slaves slave, replying with thereto with chirp-modulated ranging responses, whereby mobile nodes can locate themselves passively by listening to the request/reply exchanges, based on the respective time differences of arrival.
    Type: Application
    Filed: June 13, 2017
    Publication date: November 9, 2017
    Inventors: Olivier Bernard André SELLER, Nicolas Sornin
  • Patent number: 9800288
    Abstract: A wireless communication method in a network comprising one or several beacons and a plurality of end-points, comprising: sending by a beacon a timing message modulated according to a chirp spread spectrum format, receiving said timing message in one or several end-nodes a receiver, detecting said timing message aligning a local frequency reference and/or time reference of the end-node to the time reference of the transmitter by means of said timing message.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: October 24, 2017
    Assignee: Semtech Corporation
    Inventors: Olivier Bernard Andre Seller, Nicolas Sornin
  • Patent number: 9794095
    Abstract: A gateway device having a baseband processor for processing a plurality signals carrying a digital information modulated in the form of chirp signal, the chirp signals being either base chirps, for which the frequency changes from an initial instant to a final instant according to a predetermined base chirp function or modulated chirps, whose instantaneous frequencies vary according to one of a plurality of a functions that differ from said base chirp function, characterized in that the gateway device is arranged for simultaneously demodulating a plurality of signals having received at a same frequency and exhibiting different bitrates.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: October 17, 2017
    Assignee: Semtech Corporation
    Inventors: Nicolas Sornin, Ludovic Champion
  • Patent number: 9455687
    Abstract: A variable inductor structure for varying an inductance responsive to a digital tuning signal, comprising: a first inductor; a second, adjustable, inductor; and a digital control mechanism configured to receive the digital tuning signal and to adjust the effective inductance of the second inductor in response to the digital tuning signal; wherein the second inductor is positioned sufficiently close to the first inductor so as to be capable of altering by mutual inductance the effective inductance of the first inductor in dependence on the digital tuning signal.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: September 27, 2016
    Assignee: QUALCOMM TECHNOLOGIES INTERNATIONAL, LTD.
    Inventors: Johan Lucas Gertenbach, Timothy John Newton, Nicolas Sornin, Michael John Story
  • Publication number: 20160261306
    Abstract: A wireless communication method in a network comprising one or several beacons and a plurality of end-points, comprising: sending by a beacon a timing message modulated according to a chirp spread spectrum format, receiving said timing message in one or several end-nodes a receiver, detecting said timing message aligning a local frequency reference and/or time reference of the end-node to the time reference of the transmitter by means of said timing message.
    Type: Application
    Filed: March 2, 2016
    Publication date: September 8, 2016
    Inventors: Olivier Bernard Andre SELLER, Nicolas SORNIN
  • Patent number: 9252834
    Abstract: A transmitter device arranged to encode a set of digital input data into a succession of modulated chirps, whereby said digital input data are encoded according to a Gray code into codewords (320, 321, 322) having a plurality of bits, and having an interleaver that distributes the bits (C00, . . . Cnn) of each codeword into a series of digital modulation values (S0, . . . S7), at different bit positions, and to synthesize a series of modulated chirps whose cyclical shifts are determined by the modulation values. A special frame structure is defined in order to ensure high robustness, and variable bit-rate flexibility.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: February 2, 2016
    Assignee: Semtech Corporation
    Inventors: Olivier B. A. Seller, Nicolas Sornin
  • Publication number: 20160020932
    Abstract: A gateway device having a baseband processor for processing a plurality signals carrying a digital information modulated in the form of chirp signal, the chirp signals being either base chirps, for which the frequency changes from an initial instant to a final instant according to a predetermined base chirp function or modulated chirps, whose instantaneous frequencies vary according to one of a plurality of a functions that differ from said base chirp function, characterized in that the gateway device is arranged for simultaneously demodulating a plurality of signals having received at a same frequency and exhibiting different bitrates.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 21, 2016
    Inventors: Nicolas Sornin, Ludovic Champion
  • Patent number: 9001955
    Abstract: A phase-locked loop having: an oscillator for forming an oscillating output signal; a frequency divider connected to receive the output of the oscillator and frequency divide it by a value dependent on a division control signal; and a phase comparator for comparing the phase of the divided signal and a reference signal to generate a control signal, the operation of the oscillator being dependent on the control signal; a first mode of operation in which the frequency divider is configured to operate in dependence on a first division control signal such that the resultant oscillating output signal has a first frequency and first phase, a second mode of operation in which the frequency divider is configured to operate in dependence on a second division control signal such that the resultant oscillating output signal has a second frequency and second phase, the first division control signal being generated independently of the oscillating output signal such that the first phase is maintained when the phase-locked
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: April 7, 2015
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Pasquale Lamanna, Nicolas Sornin
  • Patent number: 8841983
    Abstract: An inductor structure comprising: a first loop and a second loop; a first feed line connected to a first end of the first loop and a second feed line connected to a first end of the second loop, each of the first and second feed lines extending through an area circumscribed by one of the first and second loops; and a crossover section adjacent to the first end of the first loop and the first end of the second loop, the crossover section coupling the first loop to the second loop so as to cause current flowing from the first feed line to the second feed line to circulate around the first loop in a first rotational direction and around the second loop in a second rotational direction opposite to the first rotational direction.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: September 23, 2014
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Timothy John Newton, Nicolas Sornin, Johan Lucas Gertenbach
  • Publication number: 20140219329
    Abstract: A transmitter device arranged to encode a set of digital input data into a succession of modulated chirps, whereby said digital input data are encoded according to a Gray code into codewords (320, 321, 322) having a plurality of bits, and having an interleaver that distributes the bits (C00, . . . Cnn) of each codeword into a series of digital modulation values (S0, . . . S7), at different bit positions, and to synthesize a series of modulated chirps whose cyclical shifts are determined by the modulation values. A special frame structure is defined in order to ensure high robustness, and variable bit-rate flexibility.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 7, 2014
    Inventors: Olivier B. A. SELLER, Nicolas Sornin
  • Patent number: 8723607
    Abstract: A phase locked loop comprising: an oscillator for generating an output signal of a frequency that is dependent on an input to the oscillator; sampling means for generating a sequence of digital values representing the output of the oscillator at moments synchronized with a reference frequency; a difference unit for generating a feedback signal representing the difference between successive values in the sequence; and an integrator for integrating the difference between the feedback signal and a signal of a desired output frequency; the signal input to the oscillator being dependent on the output of the integrator.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: May 13, 2014
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Michael Story, Nicolas Sornin
  • Patent number: 8687669
    Abstract: A signal receiver having a gain control circuit comprising: detection means configured to form a representation of the excess amplitude during a training period of a signal received by the receiver; a first gain stimulus generator configured to generate a first gain stimulus in dependence on the excess amplitude detected by the detection means during the training period; averaging means configured to estimate the average of the signal received by the receiver during the training period; a second gain stimulus generator configured to generate a second gain stimulus in dependence on the average estimated by the averaging means during the training period; and a gain control signal generator configured to generate a gain control signal for the receiver in dependence on the first gain stimulus and the second gain stimulus.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: April 1, 2014
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Olivier Bernard Andre Seller, Nicolas Sornin, Damien Richard Smith
  • Publication number: 20140050289
    Abstract: A phase-locked loop having: an oscillator for forming an oscillating output signal; a frequency divider connected to receive the output of the oscillator and frequency divide it by a value dependent on a division control signal; and a phase comparator for comparing the phase of the divided signal and a reference signal to generate a control signal, the operation of the oscillator being dependent on the control signal; a first mode of operation in which the frequency divider is configured to operate in dependence on a first division control signal such that the resultant oscillating output signal has a first frequency and first phase, a second mode of operation in which the frequency divider is configured to operate in dependence on a second division control signal such that the resultant oscillating output signal has a second frequency and second phase, the first division control signal being generated independently of the oscillating output signal such that the first phase is maintained when the phase-locked
    Type: Application
    Filed: October 18, 2013
    Publication date: February 20, 2014
    Applicant: Cambridge Silicon Radio Limited
    Inventors: Pasquale Lamanna, Nicolas Sornin
  • Publication number: 20140035632
    Abstract: A phase-locked loop for generating an output signal including a signal generator arranged to generate an output, a comparison unit arranged to compare the output with a reference signal so as to provide a digital signal, and a loop filter arranged to generate a control signal for controlling the signal generator in dependence on the digital signal. The loop filter includes a proportional path having a digital filter arranged to generate a first component of the control signal for controlling the phase of the output generated by the signal generator, and an analogue integral path arranged to generate a second component of the control signal for controlling the frequency of the output generated by the signal generator.
    Type: Application
    Filed: August 30, 2012
    Publication date: February 6, 2014
    Applicant: CAMBRIDGE SILICON RADIO LIMITED
    Inventors: Pasquale Lamanna, Nicolas Sornin, Davide Orifiamma, Cristian Pavao Moreira
  • Patent number: 8638141
    Abstract: A phase-locked loop for generating an output signal including a signal generator arranged to generate an output, a comparison unit arranged to compare the output with a reference signal so as to provide a digital signal, and a loop filter arranged to generate a control signal for controlling the signal generator in dependence on the digital signal. The loop filter includes a proportional path having a digital filter arranged to generate a first component of the control signal for controlling the phase of the output generated by the signal generator, and an analogue integral path arranged to generate a second component of the control signal for controlling the frequency of the output generated by the signal generator.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: January 28, 2014
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Pasquale Lamanna, Nicolas Sornin, Davide Orifiamma, Cristian Pavao Moreira
  • Patent number: 8610508
    Abstract: A signal generator for generating an output signal with a frequency that is a multiple of a frequency of a reference signal, the signal generator including an oscillator configured to generate the output signal in dependence on the reference signal and a control signal and a control circuit configured to generate the control signal to comprise a series of pulses in which one or more of the pulses is offset in phase relative to the reference signal, the control circuit thereby being capable of controlling the frequency and/or phase of the output signal.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: December 17, 2013
    Assignee: Cambridge Silicon Radio Limited
    Inventor: Nicolas Sornin
  • Patent number: 8565708
    Abstract: A filter for filtering a received signal to attenuate an interferer therein, the interferer having a component at an interferer frequency, and the filter comprising: an intermediate filter providing a passband and a stopband; a first frequency converter configured to form a first intermediate signal by frequency-shifting an input signal derived from the received signal such that a component of the input signal at the interferer frequency is shifted to a frequency in the passband of the intermediate filter, and to input the first intermediate signal to the intermediate filter so as to cause the first intermediate signal to be filtered by the intermediate filter to form a second intermediate signal; a second frequency converter configured to form a cancellation signal by frequency-shifting the second intermediate signal such that a component of the second intermediate signal in the passband of the intermediate filter is shifted to the interferer frequency; and a cancellation unit configured to cancel the cancel
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: October 22, 2013
    Assignee: Cambridge Silicon Radio Limited
    Inventor: Nicolas Sornin
  • Patent number: 8461888
    Abstract: A phase-locked loop for generating an output signal that has a predetermined frequency relationship with a reference signal, the phase-locked loop comprising a signal generator arranged to generate the output signal, a charge pump arranged to generate current pulses for controlling the signal generator, two control units for controlling a duration of the current pulses generated by the charge pump and a selection unit arranged to select either the first control unit or the second control unit to control the charge pump, wherein a first one of the control units is arranged to continuously monitor a phase-difference between the reference signal and a feedback signal formed from the output signal and to, when selected by the selection unit, control the charge pump to output a current pulse having a duration that is dependent on that phase-difference and a second one of the control units is arranged to, when selected by the selection unit, control the charge pump to output a current pulse of predetermined duratio
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: June 11, 2013
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Pasquale Lamanna, Nicolas Sornin
  • Publication number: 20130093483
    Abstract: A phase-locked loop for generating an output signal that has a predetermined frequency relationship with a reference signal, the phase-locked loop comprising a signal generator arranged to generate the output signal, a charge pump arranged to generate current pulses for controlling the signal generator, two control units for controlling a duration of the current pulses generated by the charge pump and a selection unit arranged to select either the first control unit or the second control unit to control the charge pump, wherein a first one of the control units is arranged to continuously monitor a phase-difference between the reference signal and a feedback signal formed from the output signal and to, when selected by the selection unit, control the charge pump to output a current pulse having a duration that is dependent on that phase-difference and a second one of the control units is arranged to, when selected by the selection unit, control the charge pump to output a current pulse of predetermined duratio
    Type: Application
    Filed: December 10, 2012
    Publication date: April 18, 2013
    Inventors: Pasquale Lamanna, Nicolas Sornin