Patents by Inventor Hendrik Boezen

Hendrik Boezen 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: 20200274207
    Abstract: A method for accurately measuring a battery temperature using a temperature sensor embodied in a battery monitoring integrated circuit is disclosed. The method includes performing calibration to estimate a thermal resistance between the battery monitoring integrated circuit and a terminal of a battery, measuring a temperature using the temperature sensor, measuring a voltage at the terminal or at a supply pin of the battery monitoring integrated circuit while a current is being used to charge or discharge the battery, calculating a power by multiplying the voltage and the current, and calculating a self-heating temperature adjustment to the temperature by multiplying the power and the thermal resistance.
    Type: Application
    Filed: February 21, 2019
    Publication date: August 27, 2020
    Inventors: Marijn Nicolaas van Dongen, Hendrik Boezen, Joop Petrus Maria van Lammeren, Henricus Cornelis Johannes Büthker
  • Patent number: 9967946
    Abstract: For an LED lighting application, overshoot-protection circuitry prevents an LED controller, such as a matrix lighting controller (MLC) that controls an array of LEDs, from falsely detecting an open-circuit condition in an LED controlled by the LED controller, by limiting the magnitude of an overshoot voltage (due to long-wire parasitic inductances) from occurring when a switch in the LED controller that is used to control the LED is turned off.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: May 8, 2018
    Assignee: NXP B.V.
    Inventors: Chandra Prakash Tiwari, Hendrik Boezen, Henricus Cornelis Johannes Büthker
  • Patent number: 9894733
    Abstract: Embodiments are provided that include a light emitting diode (LED) controller connectable to a matrix of LEDs. A start code is received via at least one input pin, and a selected curve profile is retrieved from a programmable local memory in response to receipt of the start code, wherein the programmable local memory stores a set of curve profiles, each of which is associated with a different start code. A set of coefficients of a polynomial calculator are initialized to a set of values defined in the selected curve profile, wherein the set of values represent a light output curve. A sequence of light intensity values are calculated according to the polynomial calculator, and at least one pulse width modulation (PWM) signal is generated based on the sequence of light intensity values, wherein the at least one PWM signal controls light output of at least one LED.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: February 13, 2018
    Assignee: NXP B.V.
    Inventors: Henricus Cornelis Johannes Buthker, Emiliano Mediavilla Pons, Hendrik Boezen
  • Patent number: 9819264
    Abstract: A controller for a power converter. The power converter comprises a converter-switch and a converter-inductor. The controller comprises a controller-output-terminal configured to provide a switch-control-signal for the converter-switch, a comparator and a delay-block. The comparator can provide a comparator-output-signal that has a comparator-output-state dependent on whether or not a sensed-signal is greater than a reference-signal, wherein the comparator-output-state can take a first-state-value or a second-state-value. The delay-block can: set a time-delay-value based on: (i) a voltage across the converter-inductor; start a timer when the comparator-output-state changes; and cause a change in the switch-control-signal when the timer reaches the time-delay-value.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: November 14, 2017
    Assignee: NXP B.V.
    Inventor: Hendrik Boezen
  • Patent number: 9775205
    Abstract: A method includes activating a transistor providing current to a load via an inductor based on values stored at a first timer and at a second timer. The second timer is enabled based a value of a current conducted at the inductor and based on a value of a reference current. The transistor is deactivated in response to determining that a measurement of time elapsed at the first timer is a predetermined multiple of the second measurement of time.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: September 26, 2017
    Assignee: NXP B.V.
    Inventors: Chao Peng, Hendrik Boezen
  • Patent number: 9467060
    Abstract: Systems and methods of use relate to a circuit that is designed to detect the state of two control signals, wherein one control signal indicates an ON state for the gate driver and the other control signal indicates an OFF state for the gate driver. The circuit responds to each of the control signals by controlling the gate driver so that it drives an output either high or low. The circuit can also be configured to control the gate driver so that it to drives the output (either high or low) when neither control signal is present.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: October 11, 2016
    Assignee: NXP B.V.
    Inventor: Hendrik Boezen
  • Patent number: 9204512
    Abstract: An LED control circuit for controlling a current supplied to an LED unit is disclosed. A sense resistor is included for sensing an output current provided from an output node. A comparator circuit is provided for detecting upper and lower thresholds in the output current based on the voltages at ends of the sense resistor, and for controlling a current supply to maintain the current between the thresholds. The comparator circuit comprises a reference current source and reference resistors, for generating upper and lower threshold references. The comparator circuit further comprises a comparator for detecting a mid-range voltage dependent on the output current and deriving a control signal which indicates if the detected voltage is above or below the mid-range voltage. The control signal is used to adjust the reference current source, thereby to vary the upper and lower threshold references to maintain a constant median or average output current.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: December 1, 2015
    Assignee: NXP B.V.
    Inventor: Hendrik Boezen
  • Patent number: 9185757
    Abstract: LED driver arrangements are disclosed comprising: an input; a plurality of switched mode boost converters, each connected to the input; and a plurality of outputs, each output having a different voltage and being for driving at least one LED string; wherein each of the plurality of switched mode boost converters is configurable to output of any one of the plurality of outputs. Controllers for such arrangements are also disclosed.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: November 10, 2015
    Assignee: NXP B.V.
    Inventor: Hendrik Boezen
  • Publication number: 20140300188
    Abstract: Systems and methods of use relate to a circuit that is designed to detect the state of two control signals, wherein one control signal indicates an ON state for the gate driver and the other control signal indicates an OFF state for the gate driver. The circuit responds to each of the control signals by controlling the gate driver so that it drives an output either high or low. The circuit can also be configured to control the gate driver so that it to drives the output (either high or low) when neither control signal is present.
    Type: Application
    Filed: April 3, 2013
    Publication date: October 9, 2014
    Applicant: NEP B.V.
    Inventor: Hendrik Boezen
  • Publication number: 20140285098
    Abstract: LED driver arrangements are disclosed comprising: an input; a plurality of switched mode boost converters, each connected to the input; and a plurality of outputs, each output having a different voltage and being for driving at least one LED string; wherein each of the plurality of switched mode boost converters is configurable to output of any one of the plurality of outputs. Controllers for such arrangements are also disclosed.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 25, 2014
    Applicant: NXP B.V.
    Inventor: Hendrik BOEZEN
  • Patent number: 8787502
    Abstract: In one embodiment, a method of communicating data values over a three conductor interface is provided. Different data values are transmitted by generating and transmitting three respective signals to a receiver using three conductors. The first signal is maintained as a set voltage level. The second signal is alternated between a high voltage and a low voltage according to a carrier frequency. The third signal is alternated between the high and low voltages and is out of phased with the second signal. To transmit a first data value, the first signal is generated on a first conductor, the second signal is generated on a second conductor, and the third signal is generated on a third conductor. To transmit a second data value, the second signal is generated on the first conductor, the first signal is generated on the second conductor, and the third signal is generated on the third conductor.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: July 22, 2014
    Assignee: NXP B.V.
    Inventors: Hendrik Boezen, Martijn Bredius
  • Publication number: 20140159598
    Abstract: An LED control circuit for controlling a current supplied to an LED unit is disclosed. A sense resistor is included for sensing an output current provided from an output node. A comparator circuit is provided for detecting upper and lower thresholds in the output current based on the voltages at ends of the sense resistor, and for controlling a current supply to maintain the current between the thresholds. The comparator circuit comprises a reference current source and reference resistors, for generating upper and lower threshold references. The comparator circuit further comprises a comparator for detecting a mid-range voltage dependent on the output current and deriving a control signal which indicates if the detected voltage is above or below the mid-range voltage. The control signal is used to adjust the reference current source, thereby to vary the upper and lower threshold references to maintain a constant median or average output current.
    Type: Application
    Filed: November 6, 2013
    Publication date: June 12, 2014
    Applicant: NXP B.V.
    Inventor: Hendrik BOEZEN
  • Patent number: 8693528
    Abstract: In one or more embodiments, a circuit is configured to receive a differential signal from a transmitter that is isolated from the receiver circuit and that includes a common-mode suppression circuit and signal combining circuit coupled to the corresponding lines carrying the differential signals. The common-mode suppression and signal combining circuits are configured to suppress common-mode signals of differential signals communicated on the set of differential signal lines and combine to form of differential-mode components of the differential signals.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: April 8, 2014
    Assignee: NXP B.V.
    Inventors: Rameswor Shrestha, Hendrik Boezen, Martin Bredius
  • Publication number: 20130279550
    Abstract: In one embodiment, a method of communicating data values over a three conductor interface is provided. Different data values are transmitted by generating and transmitting three respective signals to a receiver using three conductors. The first signal is maintained as a set voltage level. The second signal is alternated between a high voltage and a low voltage according to a carrier frequency. The third signal is alternated between the high and low voltages and is out of phased with the second signal. To transmit a first data value, the first signal is generated on a first conductor, the second signal is generated on a second conductor, and the third signal is generated on a third conductor. To transmit a second data value, the second signal is generated on the first conductor, the first signal is generated on the second conductor, and the third signal is generated on the third conductor.
    Type: Application
    Filed: April 24, 2012
    Publication date: October 24, 2013
    Inventors: Hendrik Boezen, Martijn Bredius
  • Patent number: 7424315
    Abstract: The communication bus system comprises a plurality of node circuits (10a-d) and a relay circuit (12, 14, 16) coupling the node circuits (10a-d). The relay circuit (12, 14, 16) has a transceiver circuit (124, 164) for relaying messages (21) between the node circuits (10a-d) in a normal mode. The transceiver circuit (124, 164) is powered down in a sleep mode. A detector circuit (120, 160) detects an incoming message (41) when the relay circuit (12, 14, 16) is in a sleep mode. A mode control circuit (122, 162) powers up the transceiver (124, 164) in response to detection of an incoming message (21). Steps are taken that ensure, in the normal mode, that messages (21) will not be relayed in unreadable form. The mode control circuit (122, 162) is arranged to cause the transceiver (124, 164) to relay a remainder (25) of the incoming message (21) after power up.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: September 9, 2008
    Assignee: NXP B.V.
    Inventors: Patrick Willem Hubert Heuts, Hendrik Boezen, Harm Gerwin Joan Voss, Stefan Gerhard Erich Butselaar
  • Patent number: 7301330
    Abstract: A sensor (10) has an output coupled to a first comparator input. A control circuit (18) is arranged to switch from an upward tracking mode to a downward relative level detection mode, to a downward tracking mode, to an upward relative level detection mode and back to the upward tracking mode successively. A first and second digital to analog conversion circuit (14a,b) receive a first and second digital control value from the control circuit (18) respectively.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: November 27, 2007
    Assignee: NXP B.V.
    Inventors: Jacobus Adrianus Van Oevelen, Stefan Butzmann, Reinhard Buchhold, Thomas Stork, Hendrik Boezen
  • Publication number: 20070059936
    Abstract: A sensor (10) has an output coupled to a first comparator input. A control circuit (18) is arranged to switch from an upward tracking mode to a downward relative level detection mode, to a downward tracking mode, to an upward relative level detection mode and back to the upward tracking mode successively. A first and second digital to analog conversion circuit (14a,b) receive a first and second digital control value from the control circuit (18) respectively.
    Type: Application
    Filed: September 9, 2004
    Publication date: March 15, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Jacobus Van Oevelen, Stefan Butzmann, Reinhard Buchhold, Thomas Stork, Hendrik Boezen
  • Patent number: 7095751
    Abstract: In a network a star node (SN1) interconnects a plurality of stations (ST1–ST3). The star node (SN1) has interfaces (I1–I3), each having a connection terminal (BP) for connecting a selected one of the stations to the star node (SN1) and each interface receives at a connection terminal (BP) a signal from the station associated with that interface and forwards the received signal to the connection terminal (BP) of the other interfaces.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: August 22, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Hendrik Boezen, Stefan Gerhard Erich Butselaar, Harm Gerwin Joan Voss
  • Publication number: 20060141786
    Abstract: A method of manufacturing an electronic device, particularly an acceleration sensor, comprising providing a wafer (10) having first and second semiconductor layers (12, 16) with a buried oxide layer (14) therebetween and forming a semiconductor device (such as a detection circuit) on one side of the wafer (10) in the first semiconductor layer (16) and a micro-electromechanical systems (MEMS) device on the opposite side of the wafer (10) in the second semi-conductor layer (12).
    Type: Application
    Filed: February 10, 2004
    Publication date: June 29, 2006
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Hendrik Boezen, Sander Den Hartog, Patrick French, Kofi Makinwa
  • Patent number: 7035224
    Abstract: The invention relates to a network comprising a plurality of network nodes and one star node, which star node is provided for the direct coupling of at least two network nodes. The star node comprises a plurality of star interfaces which are assigned to at least one network node and which comprise each an activity detector for detecting activities in the message signal coming from the assigned network node and for transferring the message signal from the assigned network node to the other star interfaces or from another star interface to the assigned network node in dependence on at least one activity.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: April 25, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Peter Fuhrmann, Wolfgang Budde, Hendrik Boezen, Patrick Willem Hubert Heuts