Patents by Inventor Maxime Leclercq

Maxime Leclercq 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: 20170324467
    Abstract: Methods and systems for femtocell positioning using low Earth orbit (LEO) satellite signals may comprise receiving an initial position of a wireless communication device (WCD) as entered by as user, service provider, or manufacturer, wherein the WCD comprises a LEO satellite signal receiver path (Rx). The WCD may be operable to provide wireless communication services to other WCDs. LEO signals may be received for determining a position of the WCD, which may be compared to a threshold radius defined by the initial position. The communication services may be enabled when the measured position is within the threshold radius. The WCD may comprise a femtocell device, a WiFi access point, or may provide cellular telephone service to the other WCDs. The position of the WCD may be measured upon powering up of the WCD, on a periodic basis, and/or when one or more motion sensors in the WCD detect motion.
    Type: Application
    Filed: April 24, 2017
    Publication date: November 9, 2017
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Patent number: 9791574
    Abstract: Methods and systems for repurposing of a global navigation satellite system receiver for receiving low-earth orbit (LEO) communication satellite timing signals may comprise receiving a medium Earth orbit (MEO) satellite signal and/or a LEO signal in a receiver of the communication device. The MEO or LEO signal may be down-converted, and a position of the communication device may be calculated utilizing the down-converted signal. The signal may be down-converted utilizing a local oscillator signal generated by a phase locked loop (PLL), which may be delta-sigma modulated via a fractional-N divider. A clock signal may be communicated to the PLL utilizing a temperature-compensated crystal oscillator. The signal may be down-converted to an intermediate frequency or down-converted directly to baseband frequencies. The signal may be processed utilizing surface acoustic wave (SAW) filters. In-phase and quadrature signals may be processed in the RF path utilizing a two-stage polyphase filter.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: October 17, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar, Anand Anandakumar
  • Patent number: 9739890
    Abstract: A GPS receiver includes an RF front end for acquiring and tracking a satellite signal and a baseband processor configured to preserve power. The baseband processor includes a GPS engine configured to process the satellite signal and generate a PVT fix, a power supervisory module for receiving the PVT fix, and a user state module that determines an environmental state, wherein the power supervisory module may power down the GPS receiver for a period of time based on a result of the determined environment state. The baseband processor also includes a time-based management module that adjusts the TCXO in response to the determined environmental state. The GPS receiver includes a plurality of operation modes, each of which is associated with a plurality of tracking profiles.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: August 22, 2017
    Assignee: MaxLinear, Inc.
    Inventors: Ioannis Spyropoulos, Anand Anandakumar, Maxime Leclercq, Yves Rasse
  • Patent number: 9733364
    Abstract: Methods and systems for a dual mode global navigation satellite system may comprise selectively enabling a medium Earth orbit (MEO) radio frequency (RF) path and a low Earth orbit (LEO) RF path in a wireless communication device to receive RF satellite signals. The signals may be processed to determine a position of the wireless device. The signals may be digitized and buffered before further processing. The RF paths may be time-division duplexed by the selective enabling of the MEO and LEO paths. Acquisition and tracking modules in the MEO RF path may be blanked when the LEO RF path is enabled. The MEO RF path may be powered down when the LEO RF path is enabled. The signals may be down-converted to an intermediate frequency before down-converting to baseband frequencies or may be down-converted directly to baseband frequencies. In-phase and quadrature signals may be processed.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: August 15, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Publication number: 20170115402
    Abstract: Methods and systems for power optimization of a global navigation satellite system may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path (LEO Rx) in a wireless communication device (WCD). Circuitry in the LEO Rx may be configured in a powered down state based on a sleep schedule. A location of the wireless communication device may be determined utilizing LEO signals received by the LEO Rx. The sleep schedule may be based on a desired accuracy of the determined location, the relative strengths of signals received from a plurality of LEO satellites, a relevance factor generated by a position engine and communicated to the sort module, or a desired power level of the WCD. The relative strengths of received signals may be compared utilizing a sort module in a LEO demodulator in the LEO satellite signal receiver path.
    Type: Application
    Filed: November 8, 2016
    Publication date: April 27, 2017
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar, Saju Palayur
  • Patent number: 9634755
    Abstract: Methods and systems for femtocell positioning using low Earth orbit (LEO) satellite signals may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path when medium Earth orbit (MEO) signals are attenuated below a threshold needed for positioning purposes. A position of said wireless communication device (WCD) may be measured based on the received LEO RF satellite signals. The measured position of the WCD may be compared to a threshold radius defined by a stored initial position. Wireless communication services to the other WCDs may be enabled when the measured position is within the threshold radius. Reentry of the stored initial position may be requested when the measured position is outside of the threshold radius. The WCD may be disabled when the measured position of the WCD falls outside of the threshold radius more than a predetermined number of times.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 25, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Publication number: 20170075843
    Abstract: Unified systems and methods for interchip and intrachip node communication are disclosed. In one aspect, a single unified low-speed bus is provided that connects each of the chips within a computing device. The chips couple to the bus through a physical layer interface and associated gateway. The gateway includes memory that stores a status table summarizing statuses for every node in the interface fabric. As nodes experience state changes, the nodes provide updates to associated local gateways. The local gateways then message, using a scout message, remote gateways with information relating to the state changes. When a first node is preparing a signal to a second node, the first node checks the status table at the associated local gateway to determine a current status for the second node. Based on the status of the second node, the first node may send the message or take other appropriate action.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 16, 2017
    Inventors: Richard Dominic Wietfeldt, Maxime Leclercq, George Alan Wiley
  • Patent number: 9551792
    Abstract: A system and method for improving acquisition sensitivity and tracking performance of a GPS receiver using multiple antennas is provided. In an embodiment, the acquisition sensitivity can be improved by determining the correlation weight of each received path signal associated with one antenna from a plurality of antennas and then combining the path signals based on their respective correlation weight. In another embodiment, carrier offset correction information of each path signal is individually determined and then summed together to be used for tracking the code phase in a code phase tracking loop. The code phase tracking loop generates an early code and a late code that are used to determine the code phase error. The system includes digital adaptive filters to mitigate narrowband and broadband noises of a received GPS signal, wherein the digital adaptive filters are switched on periodically or by external events.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: January 24, 2017
    Assignee: MaxLinear, Inc.
    Inventors: Anand K. Anandakumar, Maxime LeClercq
  • Publication number: 20160370473
    Abstract: Methods and systems for a dual mode global navigation satellite system may comprise selectively enabling a medium Earth orbit (MEO) radio frequency (RF) path and a low Earth orbit (LEO) RF path in a wireless communication device to receive RF satellite signals. The signals may be processed to determine a position of the wireless device. The signals may be digitized and buffered before further processing. The RF paths may be time-division duplexed by the selective enabling of the MEO and LEO paths. Acquisition and tracking modules in the MEO RF path may be blanked when the LEO RF path is enabled. The MEO RF path may be powered down when the LEO RF path is enabled. The signals may be down-converted to an intermediate frequency before down-converting to baseband frequencies or may be down-converted directly to baseband frequencies. In-phase and quadrature signals may be processed.
    Type: Application
    Filed: August 30, 2016
    Publication date: December 22, 2016
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Patent number: 9494692
    Abstract: Methods and systems for power optimization of a global navigation satellite system may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path (LEO Rx) in a wireless communication device (WCD). Circuitry in the LEO Rx may be configured in a powered down state based on a sleep schedule. A location of the wireless communication device may be determined utilizing LEO signals received by the LEO Rx. The sleep schedule may be based on a desired accuracy of the determined location, the relative strengths of signals received from a plurality of LEO satellites, a relevance factor generated by a position engine and communicated to the sort module, or a desired power level of the WCD. The relative strengths of received signals may be compared utilizing a sort module in a LEO demodulator in the LEO satellite signal receiver path.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: November 15, 2016
    Assignee: Maxlinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spryopoulos, Nishant Kumar, Saju Palayur
  • Patent number: 9429658
    Abstract: Methods and systems for a dual mode global navigation satellite system may comprise selectively enabling a medium Earth orbit (MEO) radio frequency (RF) path and a low Earth orbit (LEO) RF path in a wireless communication device to receive RF satellite signals. The signals may be down-converted to determine a position of the wireless device. The signals may be down-converted utilizing local oscillator signals from a phase locked loop (PLL). The RF paths may be time-division duplexed by the selective enabling of the MEO and LEO paths. Acquisition and tracking modules in the MEO RF path may be blanked when the LEO RF path is enabled. The MEO RF path may be powered down when the LEO RF path is enabled. The signals may be down-converted to an intermediate frequency before down-converting to baseband frequencies or may be down-converted directly to baseband frequencies. In-phase and quadrature signals may be processed.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: August 30, 2016
    Assignee: Maxlinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Patent number: 9395445
    Abstract: A GNSS system operates intermittently and has adaptive activity and sleep time in order to reduce power consumption. The GNSS system provides an enhanced estimate of its position in the absence of GNSS signals of sufficient strength. The user's activity and behavior is modeled and used to improve performance, response time, and power consumption of the GNSS system. The user model is based, in part, on the received GNSS signals, a history of the user's positions, velocity, time, and inputs from other sensors disposed in the GNSS system, as well as data related to the network. During each activity time, the GNSS receiver performs either tracking, or acquisition followed by tracking The GNSS receiver supports both normal acquisition as well as low-power acquisition.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: July 19, 2016
    Assignee: MaxLinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Anand K. Anandakumar, Curtis Ling
  • Publication number: 20160066160
    Abstract: Methods and systems for global navigation satellite system configuration of wireless communication applications may comprise determining a location of a wireless communication device (WCD) comprising a satellite positioning RF path utilizing signals received by the RF path, establishing communications with a wireless access point based on the determined location, and configuring a wireless communication function of the wireless communication device based on the determined location, which may comprise a power level of WiFi circuitry in the WCD. The determined location and a transaction ID for a transaction may be stored utilizing a security processor. The RF path may be powered down based on the determined location. The wireless function may comprise a synchronization of data on the WCD with devices in a home location. The WCD may comprise a femtocell device or a set-top box, and may be controlled by a reduced instruction set computing (RISC) central processing unit (CPU).
    Type: Application
    Filed: November 12, 2015
    Publication date: March 3, 2016
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Publication number: 20160056882
    Abstract: Methods and systems for femtocell positioning using low Earth orbit (LEO) satellite signals may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path when medium Earth orbit (MEO) signals are attenuated below a threshold needed for positioning purposes. A position of said wireless communication device (WCD) may be measured based on the received LEO RF satellite signals. The measured position of the WCD may be compared to a threshold radius defined by a stored initial position. Wireless communication services to the other WCDs may be enabled when the measured position is within the threshold radius. Reentry of the stored initial position may be requested when the measured position is outside of the threshold radius. The WCD may be disabled when the measured position of the WCD falls outside of the threshold radius more than a predetermined number of times.
    Type: Application
    Filed: October 30, 2015
    Publication date: February 25, 2016
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Publication number: 20160025861
    Abstract: A system for indoor global navigation satellite system detection utilizing low Earth orbit satellite signals is disclosed and may include in a mobile communication device comprising a low Earth orbit (LEO) satellite signal receiver path and a medium Earth orbit (MEO) satellite signal receiver path: receiving a LEO RF satellite signal utilizing said LEO satellite signal receiver path, measuring a received signal strength indicator (RSSI) for the received LEO signal, calculating an expected received MEO signal strength based on the measured RSSI, and configuring the wireless receiver to determine its position using LEO signals or MEO signals based on the calculated MEO signal strength and measured RSSI. The MEO path may be powered down when the calculated expected signal strength is below a threshold level for positioning purposes. The MEO path may be powered up when the calculated expected signal strength increases above a threshold level for positioning purposes.
    Type: Application
    Filed: September 30, 2015
    Publication date: January 28, 2016
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Patent number: 9219936
    Abstract: An integrated circuit (IC) includes a demodulator for receiving encrypted information data and a hardware unit that enables conditional access to the information data. The hardware unit includes a processing unit, a RAM, a ROM, multiple non-volatile registers, and an interface unit for transferring an attribute to the demodulator. The non-volatile registers may include an IC identification and an encryption key. The ROM includes a boot code that causes the processing unit to fetch a code from an external memory and store the fetched code in the RAM. The fetched code may include a certificate that ensures the authenticity of the code. The fetched code may be encrypted and decrypted by the ROM using the IC identification and the encryption key. The demodulator includes a descrambler for decrypting the received information data using the attribute. The information data may include digital radio or television content.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: December 22, 2015
    Assignee: MaxLinear, Inc.
    Inventor: Maxime Leclercq
  • Patent number: 9191778
    Abstract: Methods and systems for global positioning navigate satellite system configuration of wireless communication applications may comprise in a wireless communication device (WCD) comprising a satellite positioning RF path, determining a location of the WCD utilizing LEO signals received by said satellite positioning RF path, establishing communications with a wireless access point based on the determined location, and configuring a wireless communication function of the WCD based on the determined location. The wireless communication function may comprise a power level of wireless local area network circuitry in the WCD, a point-of-sale transaction, or a synchronization of data on the WCD with one or more devices in a home location of the WCD. The determined location and a transaction ID for the point-of-sale transaction may be stored utilizing a security processor in the WCD. The satellite positioning RF path may be powered down based on the determined location.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: November 17, 2015
    Assignee: Maxlinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Patent number: 9177152
    Abstract: A method for authenticating and deciphering an encrypted program file for execution by a secure element includes receiving the program file and a digital certificate that is associated with the program file from an external device. The method stores the program file and the associated certificate in a secure random access memory disposed in the secure element and hashes the program file to obtain a hash. The method authenticates the program file by comparing the obtained hash with a checksum that is stored in the certificate. Additionally, the method writes runtime configuration information stored in the certificate to corresponding configuration registers disposed in the secure element. The method further generates an encryption key using a seed value stored in the certificate and a unique identifier disposed in the secure element and deciphers the program file using the generated encryption key.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: November 3, 2015
    Assignee: MaxLinear, Inc.
    Inventor: Maxime Leclercq
  • Patent number: 9179437
    Abstract: Methods and systems for femtocell positioning using low Earth orbit (LEO) satellite signals may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path when medium Earth orbit (MEO) signals are attenuated below a threshold needed for positioning purposes by the MEO receiver path. A position of said wireless communication device (WCD) may be measured based on the received LEO RF satellite signals. The measured position of the WCD may be compared to a threshold radius defined by a stored initial position. Wireless communication services to the other WCDs may be enabled when the measured position is within the threshold radius. Reentry of the stored initial position may be requested when the measured position is outside of the threshold radius. The WCD may be disabled when the measured position of the WCD falls outside of the threshold radius more than a predetermined number of times.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: November 3, 2015
    Assignee: MaxLinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar
  • Publication number: 20150301192
    Abstract: Methods and systems for power optimization of a global navigation satellite system may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path (LEO Rx) in a wireless communication device (WCD). Circuitry in the LEO Rx may be configured in a powered down state based on a sleep schedule. A location of the wireless communication device may be determined utilizing LEO signals received by the LEO Rx. The sleep schedule may be based on a desired accuracy of the determined location, the relative strengths of signals received from a plurality of LEO satellites, a relevance factor generated by a position engine and communicated to the sort module, or a desired power level of the WCD. The relative strengths of received signals may be compared utilizing a sort module in a LEO demodulator in the LEO satellite signal receiver path.
    Type: Application
    Filed: September 25, 2012
    Publication date: October 22, 2015
    Inventors: Maxime Leclercq, Ioannis Spryopoulos, Nishant Kumar, Saju Palayur