Patents Assigned to NXP
  • RF power detector and detection method
    Patent number: 9362898
    Abstract: The invention provides an RF detection circuit and method using an envelope detector having an output connected to a first input of a differential amplifier and a reference storage capacitor to a second input of the differential amplifier. In a preferred implementation of the calibration mode, there is initial discharging of a reference storage capacitor, high speed charging of the reference storage capacitor until the differential amplifier output toggles, then slower discharging of the reference storage capacitor until the differential amplifier output toggles again. The resulting voltage is stored on the reference storage capacitor for use in a subsequent detection mode. This provides storage of an offset voltage which calibrates both the envelope detector differential amplifier functions.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: June 7, 2016
    Assignee: NXP B.V.
    Inventors: Lucie Chandernagor, Patrick Jean
  • Method of providing a clock frequency for a processor
    Patent number: 9360913
    Abstract: A method of providing a clock frequency to a processor is described. The method in accordance with the invention comprises the step of providing at least one reference signal and the step of determining a control value which relates to a desired first frequency. A second signal that relates to the control value is then used in a subsequent step as an input signal for a noise shaper. Then, a first signal which has the first frequency is generated by combining the output of the noise shaper with one of the at least one reference signals. The first signal is used as a clock frequency of the processor. In a preferred embodiment, one reference signal with a fixed reference frequency is provided. The reference signal is gated or enabled and hold by the output signal provided by a 1-bit noise shaper, whereby the first frequency is generated which is then used as processor clock frequency.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: June 7, 2016
    Assignee: NXP B.V.
    Inventor: Steven Aerts
  • Time division multiplexed access method of operating a near field communication system and a near field communication system operating the same
    Patent number: 9357316
    Abstract: A TDMA method of operating a near-field communication system, in which the same synchronous slot is allocated to more than one, non-interfering, transmitters, is disclosed. The power level may be adjusted to minimize interference from unwanted transmitted signals at respective receivers. A near-field communication system operating such a method is also disclosed.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: May 31, 2016
    Assignee: NXP B.V.
    Inventor: Steven Aerts
  • Wireless charging using passive NFC tag and multiple antenna of differing shapes
    Patent number: 9356457
    Abstract: A charging pad capable of charging a receiver according to a predetermined procedure is disclosed. The charging pad may have a plurality of charging coils and a controller for selecting an appropriate coil for charging the receiver. The receiver communicates with the charging pad via NFC, thereby indicating to the charging pad the appropriate procedure for charging the receiver. The controller then selects the appropriate coil and directs charging according to the appropriate procedure.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: May 31, 2016
    Assignee: NXP B.V.
    Inventors: Aliaksei Vladimirovich Sedzin, Johannes Petrus Maria van Lammeren, Klaas Brink
  • Communication apparatus with slew rate feedback
    Patent number: 9355056
    Abstract: In accordance with one or more example aspects of the disclosure, communications are effected on a bus using bit time and slew rate feedback. As consistent with one or more embodiments, communications are effected in a network including a master circuit and a plurality of slave circuits, on bus that is controlled by the master circuit corresponding to master and slave data communication. A feedback signal is provided, which is indicative of a slew rate and bit time of signals communicated between the master and slave circuits on the bus. Data is transmitted on the bus by generating output signals via a waveform corresponding to an input signal, and controlling the waveform based upon the slew rate and bit time indicated via the feedback signal.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 31, 2016
    Assignee: NXP B.V.
    Inventors: Matthieu Deloge, Arnoud Pieter van der Wel
  • Capacitor arrangement for oscillator
    Patent number: 9356557
    Abstract: In an example embodiment, an apparatus includes an LC circuit having a capacitive circuit and an inductive circuit connected in a circuit loop. In a first mode, a switching circuit in the inductive circuit provides a charge voltage across the LC circuit and prevents oscillation of the LC circuit by opening a switch in the circuit loop. In a second mode, the switching circuit enables the oscillation of the LC circuit by closing the switch in the circuit loop. The adjustable capacitive circuit includes capacitive branch circuits configured to contribute a first amount of capacitance when enabled. For each capacitive branch circuit, an initialization circuit couples the set of capacitors to a respective reference voltage in response to the capacitive branch circuit being disabled and the switching circuit operating in the first mode.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: May 31, 2016
    Assignee: NXP B.V.
    Inventors: Yuan Gao, Frank Leong, Robert Bogdan Staszewski
  • Loudspeaker polarity detector
    Patent number: 9357322
    Abstract: A method comprising the steps of: determining one or more impedance values of a loudspeaker; and determining the polarity of a loudspeaker based on the one or more impedance values.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: May 31, 2016
    Assignee: NXP B.V.
    Inventor: Temujin Gautama
  • Processing system
    Patent number: 9355276
    Abstract: A processing system is disclosed. The system comprises: a processing unit; a memory adapted to store firmware code and application code for execution by the processor; and a memory access control unit adapted to control access of the processing unit to firmware code and application code stored in the memory. The memory access control unit is adapted to disable access to firmware code when access to application code is enabled, and to disable access to application code when access to firmware code is enabled.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: May 31, 2016
    Assignee: NXP B.V.
    Inventors: Nicolas Laine, Andre Lepine
  • Charge balancing circuit for series connected chains of charge storage elements
    Patent number: 9356467
    Abstract: There is disclosed a charge balancing circuit (CBC) and method (10, 20) for balancing charge storage elements (CSE1_1, CSE1_2, CSE2_2) of a charge storage device (CSD). The charge storage device comprises at least two series connected chains (CHN1, CHN2) of charge storage elements. The charge balancing circuit (CBC) connects a first charge storage element (CSE1_1) of a first chain (CHN1) in parallel with a first charge storage element (CSE1_2) of a second chain (CHN2) during a first period of time (?1), and connects the first charge storage element (CSE1_1) of the first chain (CHN1) in parallel with a second charge storage element (CSE2_2) of the second chain (CHN2) during a second period of time (?2).
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: May 31, 2016
    Assignee: DATANG NXP SEMICONDUCTORS CO., LTD.
    Inventor: Johannes Petrus Maria Van Lammeren
  • Displayport over USB Mechanical Interface
    Publication number: 20160147704
    Abstract: Various exemplary embodiments relate to a function selector device in a system using a DisplayPort protocol over a universal serial bus (USB) mechanical interface, including: a first port configured to transmit/receive a USB SSTX signal; a second port configured to transmit/receive a USB SSRX signal; a third port configured to transmit/receive a DisplayPort lane signal; a fourth port configured to transmit/receive a DisplayPort AUX signal; a fifth port configured to transmit/receive a DisplayPort HPD signal; a sixth port configured to connect to SSTX pins of a USB 3.0 receptacle; and a seventh port configured to connect to SSRX pins of a USB 3.0 receptacle.
    Type: Application
    Filed: August 28, 2013
    Publication date: May 26, 2016
    Applicant: NXP B.V.
    Inventors: Nicolas Guillerm, Krishnan Tiruchi Natarajan
  • Apparatus, device and method for wafer dicing
    Patent number: 9349645
    Abstract: An apparatus, device and method for wafer dicing is disclosed. In one example, the apparatus discloses: a wafer holding device having a first temperature; a die separation bar moveably coupled to the wafer holding device; and a cooling device coupled to the apparatus and having a second temperature which enables the die separation bar to fracture an attachment material in response to movement with respect to the wafer holding device. In another example, the method discloses: receiving a wafer having an attachment material applied to one side of the wafer; placing the wafer in a holding device having a first temperature; urging a die separation bar toward the wafer; and cooling the attachment material to a second temperature, which is lower than the first temperature, until the attachment material fractures in response to the urging.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: May 24, 2016
    Assignee: NXP B.V.
    Inventors: Martin Lapke, Hartmut Buenning, Sascha Moeller, Guido Albermann, Thomas Rohleder, Heiko Backer
  • Magnetic field sensor system with a magnetic wheel rotatable around a wheel axis and with magnetic sensor elements being arranged within a plane perpendicular to the wheel axis
    Patent number: 9347799
    Abstract: It is described a magnetic field differential sensor system for measuring rotational movements of a shaft. The described magnetic field sensor system (200) comprises (a) a biasing magnet (210, 510) configured for generating a biasing magnetic field; (b) a magnetic wheel (230) having a wheel axis and a circumferential surface which comprises a regular structure of teeth (231) and gaps (232) arranged in an alternating manner, wherein (i) the magnetic wheel (230) is attachable to the shaft and (ii) the magnetic wheel (230) can be magnetized by the biasing magnetic field; and (c) a magnetic sensor arrangement (220) comprising four magnetic sensor elements (221, 222, 223, 224) being connected with each other in a Wheatstone bridge configuration. Respectively two of the magnetic sensor elements (221, 222, 223, 224) are assigned to one half bridge of the Wheatstone bridge.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: May 24, 2016
    Assignee: NXP B.V.
    Inventors: Alexé Levan Nazarian, Frederik Willem Maurits Vanhelmont, Jacobus Josephus Maria Ruigrok
  • Method and system for performing analog-to-digital conversion
    Patent number: 9350375
    Abstract: Methods and systems for performing analog-to-digital conversion are described. In one embodiment, a method for performing analog-to-digital conversion involves processing an analog impulse signal to obtain an impulse pattern of the analog impulse signal in a first signal processing path and converting the analog impulse signal into a digital signal based on the impulse pattern in a second signal processing path that is in parallel with the first signal processing path. The impulse pattern of the analog impulse signal includes duty cycle information of the analog impulse signal. Other embodiments are also described.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: May 24, 2016
    Assignee: NXP B.V.
    Inventors: Yu Lin, Frank Leong, Konstantinos Doris
  • Heterojunction semiconductor device and manufacturing method
    Patent number: 9349819
    Abstract: Disclosed is a semiconductor device comprising a group 13 nitride heterojunction comprising a first layer having a first bandgap and a second layer having a second bandgap, wherein the first layer is located between a substrate and the second layer; and a Schottky electrode and a first further electrode each conductively coupled to a different area of the heterojunction, said Schottky electrode comprising a central region and an edge region, wherein the element comprises a conductive barrier portion located underneath said edge region only of the Schottky electrode for locally increasing the Schottky barrier of the Schottky electrode. A method of manufacturing such a semiconductor device is also disclosed.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: May 24, 2016
    Assignee: NXP B.V.
    Inventors: Godefridus Adrianus Maria Hurkx, Jeroen Antoon Croon, Johannes Josephus Theodorus Marinus Donkers, Jan Sonsky, Stephen John Sque, Andreas Bernardus Maria Jansman, Markus Mueller, Stephan Heil, Tim Boettcher
  • Electronic tamper detection
    Patent number: 9342710
    Abstract: An apparatus, method and package for electronic tamper detection. In one example, an apparatus, device or package for electronic tamper detection includes: a first inductor positioned at a first distance from a first conductive surface; a first oscillator generating a first frequency in dependence upon the first inductor; and a comparator setting a tamper detected status if the generated first frequency is not within an error tolerance to a pre-stored first frequency. One example of a method for fabricating an electronic tamper detection apparatus, device, or package is also provided.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: May 17, 2016
    Assignee: NXP B.V.
    Inventor: Lukas Frederik Tiemeijer
  • Method for storing data as well as transponder, a read/write-device, a computer readable medium including a program element and such a program element adapted to perform this method
    Patent number: 9342776
    Abstract: A method for storing or reading data in a memory array of a transponder and a corresponding transponder, read/write device and program element is described. Therein, a data structure for storing data within the memory array is defined by a predetermined protocol. The data structure comprises: a header data block including predefined header data; an application data block for storing application data; a memory control data block including a reservation indicator for indicating a reserved partial memory area of the memory array where, in accordance with the predetermined protocol, application data cannot be read or written by a protocol compliant reader device. The method for storing data comprises storing additional application data in the reserved partial memory area.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: May 17, 2016
    Assignee: NXP B.V.
    Inventors: Francesco Gallo, Hauke Meyn
  • Security token, data processing system and method of processing data
    Patent number: 9342680
    Abstract: According to an aspect of the invention, a security token is conceived, in particular a smart card, comprising a tactile sensing user interface, wherein said tactile sensing user interface is adapted to capture a stream of position data corresponding to a sequence of positions of a finger engaging with said tactile sensing user interface and representing a stream of input data for a data processing device, said security token being adapted to transmit said stream of position data to a host system for further processing.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: May 17, 2016
    Assignee: NXP B.V.
    Inventor: Thomas Suwald
  • Micro-electromechanical system microphone
    Patent number: 9344805
    Abstract: A capacitive micro-electromechanical system (MEMS) microphone includes a semiconductor substrate having an opening that extends through the substrate. The microphone has a membrane that extends across the opening and a back-plate that extends across the opening. The membrane is configured to generate a signal in response to sound. The back-plate is separated from the membrane by an insulator and the back-plate exhibits a spring constant. The microphone further includes a back-chamber that encloses the opening to form a pressure chamber with the membrane, and a tuning structure configured to set a resonance frequency of the back-plate to a value that is substantially the same as a value of a resonance frequency of the membrane.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: May 17, 2016
    Assignee: NXP B.V.
    Inventors: Franz Felberer, Remco Henricus Wilhelmus Pijnenburg, Twan van Lippen, Iris Bominaar-Silkens
  • Reduction of data corruption in wireless systems
    Patent number: 9338817
    Abstract: There is provided a system for reducing the risk of data corruption occurring in wireless systems, by reducing the risk of an un-expected disconnection occurring between a client device (20; 52, 54, 56) and a host device (20; 50). The client device monitors its own power supply, and when the client device determines that its power supply capacity is almost exhausted, the client device sends a low power notification (5; 55) to the host device. The host device receives the low power notification, and in response closes the wireless connection to the client device, thereby preventing an unexpected disconnection from occurring when the clients power supply is finally exhausted.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: May 10, 2016
    Assignee: NXP B.V.
    Inventors: Yuxi Sun, Bart Vertenten
  • Playing audio in trick-modes
    Patent number: 9336823
    Abstract: A method of playing a digital audio signal at a speed different from that at which it was recorded. The method comprises: playing a first segment of the signal; skipping to a second segment that is not contiguous with the first segment; and playing the second segment, wherein at least one of the first and second segment is played at a rate different from the rate at which it was recorded.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 10, 2016
    Assignee: NXP B.V.
    Inventors: Ganesh Shanmugasundaram, Sumit Jaiswal