Patents Assigned to NXP B.V.
  • Oscillator system
    Patent number: 10250269
    Abstract: An oscillator system includes a voltage controlled oscillator (VCO) circuit. The VCO circuit includes an output for providing an oscillation signal and input to receive a voltage that controls the frequency of the oscillation signal. The oscillator system includes a frequency to voltage circuit that receives the oscillation signal and produces a voltage that is dependent upon the frequency of the oscillation signal. The oscillator system includes a comparison circuit including an amplifier. The amplifier includes an inverting input, a non inverting input, and an output. During a first phase of the comparison circuit, the non inverting input receives a reference voltage and the inverting input is coupled to the output of the amplifier via a switch and to a capacitor wherein the capacitor samples the voltage of the output.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: April 2, 2019
    Assignee: NXP B.V.
    Inventors: Jos Verlinden, Sander Derksen, Dobson Paul Parlindungan Simanjuntak, Remco Cornelis Herman Van de Beek
  • PWM mode boost switching regulator with programmable pulse skip mode
    Patent number: 10250118
    Abstract: A power supply is disclosed. The power supply includes a switch to regulate an input voltage and a current sense transistor to sense current through the switch. The power supply further includes a switching control to control a switching frequency of the switch. A programmable pulse skip circuit coupled to the switching control is also included. The switching control is configured to alter the switching frequency based on a pulse skip control signal received from the programmable pulse skip circuit. The programmable pulse skip circuit produces the pulse skip control signal based on an external control signal inputted to the programmable pulse skip circuit and the sensed current by the current sense transistor.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: April 2, 2019
    Assignee: NXP B.V.
    Inventor: Ge Wang
  • Speech signal processing circuit
    Patent number: 10249318
    Abstract: A speech-signal-processing-circuit configured to receive a time-frequency-domain-reference-speech-signal and a time-frequency-domain-degraded-speech-signal. The time-frequency-domain-reference-speech-signal comprises: an upper-band-reference-component with frequencies that are greater than a frequency-threshold-value; and a lower-band-reference-component with frequencies that are less than the frequency-threshold-value. The time-frequency-domain-degraded-speech-signal comprises: an upper-band-degraded-component with frequencies that are greater than the frequency-threshold-value; and a lower-band-degraded-component with frequencies that are less than the frequency-threshold-value.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: April 2, 2019
    Assignee: NXP B.V.
    Inventors: Magdalena Kaniewska, Wouter Joos Tirry, Cyril Guillaumé, Johannes Abel, Tim Fingscheidt
  • Lead frame with partially-etched connecting bar
    Patent number: 10249556
    Abstract: A lead frame strip includes an array of lead frames. The lead frames each include a die pad and lead fingers that are spaced from the die pads and disposed along one or more sides of the die pads. The lead fingers have proximal ends near to the die pad and distal ends farther from the die pad. Connection bars extend between the lead frames. The lead fingers of adjacent lead frames extend from opposing sides of the connection bars. The connection bars have first portions where the lead fingers are connected thereto, and second portions between adjacent lead finger connections to the connection bar. The second portions are etched to form a bar that extends diagonally from a first one of the adjacent lead fingers connected thereto to a second one of the adjacent lead fingers connected thereto.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: April 2, 2019
    Assignee: NXP B.V.
    Inventors: Verapath Vareesantichai, Amornthep Saiyajitara, Pimpa Boonyatee, Adrianus Buijsman
  • METHOD AND SYSTEM FOR OPERATING A COMMUNICATIONS DEVICE THAT COMMUNICATES VIA INDUCTIVE COUPLING
    Publication number: 20190097687
    Abstract: Embodiments of methods and systems for operating a communications device that communicates via inductive coupling are described. In an embodiment, a method for operating a communications device that communicates via inductive coupling involves adjusting a configuration of the communications device in response to a clock signal that is synchronized to a received clock signal, obtaining information that corresponds to transmission current or power generated in response to the adjusted configuration, and quantifying a detuning condition in response to the obtained information. Other embodiments are also described.
    Type: Application
    Filed: September 25, 2017
    Publication date: March 28, 2019
    Applicant: NXP B.V.
    Inventors: Gernot Hueber, Erich Merlin, Johannes Bruckbauer
  • METHOD AND SYSTEM FOR OPERATING A COMMUNICATIONS DEVICE THAT COMMUNICATES VIA INDUCTIVE COUPLING
    Publication number: 20190097688
    Abstract: Embodiments of methods and systems for operating a communications device that communicates via inductive coupling are described. In an embodiment, a method for operating a communications device that communicates via inductive coupling involves detecting a system condition associated with the communications device and tuning a matching network of the communications device in response to the system condition, where the matching network includes a hybrid transformer that separates a receiver of the communications device from a transmitter of the communications device. Other embodiments are also described.
    Type: Application
    Filed: September 25, 2017
    Publication date: March 28, 2019
    Applicant: NXP B.V.
    Inventors: Gernot Hueber, Ian Thomas Macnamara, Jingfeng Ding
  • Electronic device and power management method
    Patent number: 10243410
    Abstract: According to a first aspect of the present disclosure, an electronic device is provided, comprising: a first power extraction unit configured to extract a first amount of power from an RF field present on the RF antenna and to provide said first amount of power to one or more circuits of the electronic device; a second power extraction unit configured to extract a second amount of power from the RF field and to provide said second amount of power to an output of the electronic device; a control unit configured to control the second amount of power provided to said output. According to a second aspect of the present disclosure, a corresponding power management method for use in an electronic device is conceived. According to third aspect of the present disclosure, a corresponding non-transitory computer-readable medium comprising instructions is provided.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: March 26, 2019
    Assignee: NXP B.V.
    Inventor: Jaydeep Girishkumar Dalwadi
  • Secure vehicle access system, key, vehicle and method therefor
    Patent number: 10239494
    Abstract: A secure vehicle access system comprises a vehicle and a key associated with the vehicle. The key comprises: a radio frequency, RF, key transceiver configured to: broadcast at least one signal; and listen for an acknowledgement message from the vehicle. The vehicle comprises: a radio frequency, RF, vehicle transceiver configured to: listen for the at least one broadcast signal from the key; and in response thereto, transmit an acknowledgement message back to the key to establish a communication link between the vehicle and the key. The key further comprises a ranging circuit configured to perform a distance determination between the vehicle and the key, following the establishment of the communication link, to determine whether to allow access to the vehicle.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 26, 2019
    Assignee: NXP B.V.
    Inventor: Bernhard Spiess
  • Antenna
    Patent number: 10243269
    Abstract: The disclosure relates to an antenna including a substrate and a conductor pattern on the substrate. The conductor pattern comprises first and second conductor areas and the first conductor area is generally at a first end of the substrate and the second conductor area is generally at an opposing second end of the substrate. A first direction extends between the first and second ends of the substrate. The first conductor area has two arms, the two first conductor area arms extend parallel to the first direction and define a first slot between them; wherein the second conductor area has two arms with a second slot defined between them, and the two second conductor area arms extend parallel to the first direction. The two second conductor area arms sit within the first slot with a portion of the first slot at the outer sides of the two second conductor area arms.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: March 26, 2019
    Assignee: NXP B.V.
    Inventors: Liesbeth Gommé, Anthony Kerselaers
  • Equality check implemented with secret sharing
    Patent number: 10243937
    Abstract: A method of performing an equality check in a secure system, including: receiving an input v having a known input property; splitting the input v into t secret shares vi where i is an integer index and t is greater than 1; splitting an input x into k secret shares xi where i is an integer index and k is greater than 1; splitting the secret shares xi into a s chunks resulting in s·k chunks yj where j is an integer index; calculating a mapping chain t times for each secret share vi, wherein the mapping chain including s·k affine mappings Fj, wherein yj and Fj?1(yj?1) are the inputs to Fj and the F0(y0)=vi; and determining if the outputs have a known output property indicating that the input x equals a desired value.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: March 26, 2019
    Assignee: NXP B.V.
    Inventor: Wilhelmus Petrus Adrianus Johannus Michiels
  • Wireless power supply to enable payment transaction
    Patent number: 10242355
    Abstract: A method for completing a transaction at a terminal between a terminal and a mobile device including: initiating a transaction at the terminal; initiating communication with the mobile device; determining that the mobile device is without power; transmitting a wireless power signal to power the mobile device; sending a transaction authentication request message to the mobile device after transmitting the wireless power signal; receiving an authentication message from the mobile device; and completing the transaction after receiving the authentication message from the mobile device.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: March 26, 2019
    Assignee: NXP B.V.
    Inventors: Kai Neumann, Johannes van Lammeren, Klaas Brink
  • Automatic loop gain calibration in amplification circuits
    Patent number: 10243533
    Abstract: Aspects are directed to an amplifier circuit including a signal processing circuit and a calibration circuit. In certain specific embodiments, the signal processing circuit includes a signal combiner and a closed-loop feedback path, and the signal processing circuit is designed to provide a loop transfer function for a derived signal partly representing contributions from an audio input signal, a control or pilot signal having a target frequency range, and a calibration signal. The signal combiner is designed to combine aspects of the control or pilot signal and aspects of the audio input signal, and the calibration circuit is designed to adjust an effective gain of the derived signal in response to whether a unity-gain frequency of a signal in the closed-loop feedback path, as provided via the loop transfer function, is higher or lower than the target frequency range.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 26, 2019
    Assignee: NXP B.V.
    Inventors: Marco Berkhout, Fred Mostert, Massimo Ciacci, Mattheus Johan Koerts, Martin Kessel
  • Method and circuitry for battery charging using feedback voltages
    Patent number: 10243387
    Abstract: Battery charger circuitry includes a linear regulator and a current control loop. The linear regulator provides a constant current to a battery while the battery charger circuitry is in a current control mode. While the battery charger circuitry is in a constant voltage mode, the current control loop to: determine whether a charging current provided to the battery is less than an end of charging reference current; in response to the charging current being less than the end of charging reference current, to place the battery charger circuitry into an end of charging state; in response to the battery charger circuitry be placed the end of charging state, and to start a timer; and in response to the timer expiring, to enter the battery charger circuitry into a done state to end charging of the battery.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: March 26, 2019
    Assignee: NXP B.V.
    Inventor: Meng Wang
  • Power switching circuit
    Patent number: 10243554
    Abstract: According to a first aspect of the present disclosure, a power switching circuit is provided, comprising: a bandgap reference circuit configured to receive an input voltage and to generate a reference voltage in response to receiving said input voltage; a supply selection circuit configured to receive at least two supply voltages, to select the highest voltage of said supply voltages and to provide said highest voltage to the bandgap reference circuit. According to a second aspect of the present disclosure, a corresponding method of operating a power switching circuit is conceived.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 26, 2019
    Assignee: NXP B.V.
    Inventors: Guru Rachupalli, Venkata Satya Sai Evani, Jaydeep Dalwadi
  • Phase compensation in an NFC system
    Patent number: 10237000
    Abstract: A method for compensating phase shift is provided. The method includes sweeping a transmitter (TX) clock frequency over a frequency range and sampling resistance values at a receiver (RX) circuit while sweeping the TX clock frequency. A first frequency in the frequency range is determined which corresponds to a maximum resistance value sampled at the RX circuit. Using a look-up table (LUT), a phase adjust value is determined based on the first frequency. A phase of the TX clock is adjusted based on the phase adjust value.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: March 19, 2019
    Assignee: NXP B.V.
    Inventors: Martin Buchsbaum, Erich Merlin, Manuel Markus Figer
  • Distributed cryptographic key insertion and key delivery
    Patent number: 10237063
    Abstract: A method of producing a secure integrated circuit (IC), including: loading the IC with a unique identification number (UID); loading the IC with a key derivation data (KDD) that is based upon a secret value K and the UID; producing a secure application configured with a manufacturer configuration parameter (MCP) and the secret value K and configured to receive the UID from the IC; producing a manufacturer diversification parameter (MDP) based upon the MCP and the secret value K and loading the MDP into the IC; wherein secure IC is configured to calculate a device specific key (DSK) based upon the received MDP and the KDD, and wherein the secure application calculates the DSK based upon the MCP, K, and the received UID.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 19, 2019
    Assignee: NXP B.V.
    Inventor: Jan Rene Brands
  • White-box modular exponentiation
    Patent number: 10235506
    Abstract: A method of obscuring software code implementing a modular exponentiation function, including: receiving modular exponentiation parameters including an exponent e having N bits; generating a bitwise exponent array and inverse bitwise exponent array; and generating modular exponentiation function operations using the bitwise exponent array, inverse bitwise exponent array, and N, wherein the generated modular exponentiation function operations are split variable operations.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: March 19, 2019
    Assignee: NXP B.V.
    Inventors: Jan Hoogerbrugge, Wil Michiels
  • Digitally-assisted capless voltage regulator
    Patent number: 10234881
    Abstract: A voltage regulator has a slow loop for providing a regulated DC current and a fast loop for providing a transient current. Feedback information is used to monitor the output voltage and control the current used to generate the output voltage. The voltage regulator does not need a capacitor to create transient current.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: March 19, 2019
    Assignee: NXP B.V.
    Inventors: Shishir Goyal, Arvind Sherigar
  • Dual-bit ROM cell with virtual ground line and programmable metal track
    Patent number: 10236071
    Abstract: A read-only memory (ROM) device includes memory cells, bit-line pairs, a virtual ground line, and a programmable metal track. The memory cells are arranged in an array of rows and columns. Each memory cell stores two bits of data. The virtual ground line is disposed vertically and shared by two adjacent columns. The programmable metal track connects a memory cell to the virtual ground line based on a value of the two bits of data stored in the memory cell.
    Type: Grant
    Filed: September 10, 2017
    Date of Patent: March 19, 2019
    Assignee: NXP B.V.
    Inventors: Rajat Kohli, Patrick Van De Steeg, Jwalant Kumar Mishra, Pankaj Agarwal
  • Multi-pulse communication using spreading sequences
    Patent number: 10237056
    Abstract: Various exemplary embodiments relate to a method of communicating by a transmitter. Embodiments of the method may include creating information to be used by a receiver to define a spreading sequence for a subsequent packet, coding the information into a current communications packet, and transmitting the current communications packet.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: March 19, 2019
    Assignee: NXP B.V.
    Inventors: Andries Hekstra, Stefan Drude, Frank Leong, Arie Koppelaar