Patents by Inventor Wendy Ng

Wendy Ng 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).

  • Patent number: 10420830
    Abstract: The present invention refers to a composition comprising a viral protein or fragment thereof, wherein the viral protein or fragment thereof is enclosed within a self-assembling protein nanocapsule, preferably ferritin, and wherein the viral protein, or fragment thereof is selected from a virus of the Togaviridae family. The viral protein or fragment thereof may also further be selected from a virus of the alphavirus subfamily.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: September 24, 2019
    Assignees: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Fong Poh Lisa Ng, Yiu-Wing Jason Kam, Wei Ling Wendy Lee, Fok Moon Lum, Sierin Lim, Kang Yu, Chengxun Su
  • Patent number: 10420042
    Abstract: In one implementation, a voltage boost assembly including a boost converter having a capacitive element arranged at an output, and an inductive element connectable to an electrical supply. The voltage boost assembly also includes a sensor assembly provided to generate a quick-start enable signal in response to detecting that an electrical condition relative to an electrical output of the boost converter has breached a first threshold. The voltage boost assembly further includes a quick-start module responsive to the quick-start enable signal, and configured to drive the boost converter at a relatively high duty-cycle and so that the boost converter delivers an output current that satisfies a second threshold in order to charge the capacitive element arranged at the output.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: September 17, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Wendy Ng, Yin Chun Yeung, Michael Lee Scheel
  • Patent number: 10389257
    Abstract: A voltage converter is disclosed to include a high-side switch circuit block comprising a plurality of high-side switching elements and a low-side switch circuit block comprising a plurality of low-side switching elements. The voltage converter may include an intermediate node coupled to one or more high-side switching elements and coupled to one or more low-side switching elements. The voltage converter may further include a segmentation circuit block communicatively coupled to the high-side switch circuit block and communicatively coupled to the low-side switch circuit block.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: August 20, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Wendy Ng, James Jason Locascio
  • Publication number: 20190116638
    Abstract: Boost regulators with dynamic regulation band are disclosed. In certain configurations, a boost regulator system includes a field effect transistor (FET) current source having a gate controlled by a current level control signal, a source that receives a regulator output voltage, and a drain that outputs a current. The boost regulator system further includes a boost regulator that generates the regulator output voltage based on a reference voltage. The boost regulator includes a headroom detection circuit electrically coupled to the drain of the FET current source and operable to generate a headroom signal indicating a detected voltage headroom of the FET current source. The boost regulator further includes a regulator control circuit that controls a voltage level of the reference voltage based on the headroom signal, and that controls a size of a regulation band of the boost regulator based on the current level control signal.
    Type: Application
    Filed: December 10, 2018
    Publication date: April 18, 2019
    Inventors: George A. Hariman, Chak S. Ngai, Wendy Ng
  • Publication number: 20190036495
    Abstract: Components of a power amplifier controller may support lower voltages than the power amplifier itself. As a result, a surge protection circuit that prevents a power amplifier from being damaged due to a power surge may not effectively protect the power amplifier controller. Embodiments disclosed herein present an overvoltage protection circuit that prevents a charge-pump from providing a voltage to a power amplifier controller during a detected surge event. By separately detecting and preventing a voltage from being provided to the power amplifier controller during a surge event, the power amplifier controller can be protected regardless of whether the surge event results in a voltage that may damage the power amplifier. Further, embodiments of the overvoltage protection circuit can prevent a surge voltage from being provided to a power amplifier operating in 2G mode.
    Type: Application
    Filed: July 24, 2018
    Publication date: January 31, 2019
    Inventors: Wendy Ng, Wei Long, Kevin Cho
  • Publication number: 20190036494
    Abstract: Components of a power amplifier controller may support lower voltages than the power amplifier itself. As a result, a surge protection circuit that prevents a power amplifier from being damaged due to a power surge may not effectively protect the power amplifier controller. Embodiments disclosed herein present an overvoltage protection circuit that prevents a charge-pump from providing a voltage to a power amplifier controller during a detected surge event. By separately detecting and preventing a voltage from being provided to the power amplifier controller during a surge event, the power amplifier controller can be protected regardless of whether the surge event results in a voltage that may damage the power amplifier. Further, embodiments of the overvoltage protection circuit can prevent a surge voltage from being provided to a power amplifier operating in 2G mode.
    Type: Application
    Filed: July 24, 2018
    Publication date: January 31, 2019
    Inventors: Wendy Ng, Wei Long, Kevin Cho
  • Patent number: 10182476
    Abstract: Apparatus and methods for boost regulators with dynamic regulation band are disclosed. In certain configurations, a boost regulator system includes a boost regulator, a current source, and a light emitting element, such as a flash LED, that is controlled using a current generated by the current source. The boost regulator generates an output voltage that is used to power the current source. The boost regulator operates with a regulation band that changes based on a current level of the light emitting element.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: January 15, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: George A. Hariman, Chak S. Ngai, Wendy Ng
  • Publication number: 20180124884
    Abstract: Apparatus and methods for boost regulators with dynamic regulation band are disclosed. In certain configurations, a boost regulator system includes a boost regulator, a current source, and a light emitting element, such as a flash LED, that is controlled using a current generated by the current source. The boost regulator generates an output voltage that is used to power the current source. The boost regulator operates with a regulation band that changes based on a current level of the light emitting element.
    Type: Application
    Filed: October 3, 2017
    Publication date: May 3, 2018
    Inventors: George A. Hariman, Chak S. Ngai, Wendy Ng
  • Publication number: 20180115250
    Abstract: A voltage converter is disclosed to include a high-side switch circuit block comprising a plurality of high-side switching elements and a low-side switch circuit block comprising a plurality of low-side switching elements. The voltage converter may include an intermediate node coupled to one or more high-side switching elements and coupled to one or more low-side switching elements. The voltage converter may further include a segmentation circuit block communicatively coupled to the high-side switch circuit block and communicatively coupled to the low-side switch circuit block.
    Type: Application
    Filed: October 23, 2017
    Publication date: April 26, 2018
    Inventors: Wendy NG, James Jason LOCASCIO
  • Patent number: 9801242
    Abstract: Apparatus and methods for boost regulators with dynamic regulation band are disclosed. In certain configurations, a boost regulator system includes a boost regulator, a current source, and a light emitting element, such as a flash LED, that is controlled using a current generated by the current source. The boost regulator generates an output voltage that is used to power the current source. The boost regulator operates with a regulation band that changes based on a current level of the light emitting element.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: October 24, 2017
    Assignee: SKYWORKS SOLUTEQNS, ENC.
    Inventors: George A. Hariman, Chak S. Ngai, Wendy Ng
  • Publication number: 20170181106
    Abstract: In one implementation, a voltage boost assembly including a boost converter having a capacitive element arranged at an output, and an inductive element connectable to an electrical supply. The voltage boost assembly also includes a sensor assembly provided to generate a quick-start enable signal in response to detecting that an electrical condition relative to an electrical output of the boost converter has breached a first threshold. The voltage boost assembly further includes a quick-start module responsive to the quick-start enable signal, and configured to drive the boost converter at a relatively high duty-cycle and so that the boost converter delivers an output current that satisfies a second threshold in order to charge the capacitive element arranged at the output.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 22, 2017
    Inventors: Wendy NG, Yin Chun YEUNG, Michael Lee SCHEEL
  • Publication number: 20170094734
    Abstract: Apparatus and methods for boost regulators with dynamic regulation band are disclosed. In certain configurations, a boost regulator system includes a boost regulator, a current source, and a light emitting element, such as a flash LED, that is controlled using a current generated by the current source. The boost regulator generates an output voltage that is used to power the current source. The boost regulator operates with a regulation band that changes based on a current level of the light emitting element.
    Type: Application
    Filed: September 8, 2016
    Publication date: March 30, 2017
    Inventors: George A. Hariman, Chak S. Ngai, Wendy Ng
  • Patent number: 9584012
    Abstract: In one implementation, a voltage boost assembly including a boost converter having a capacitive element arranged at an output, and an inductive element connectable to an electrical supply. The voltage boost assembly also includes a sensor assembly provided to generate a quick-start enable signal in response to detecting that an electrical condition relative to an electrical output of the boost converter has breached a first threshold. The voltage boost assembly further includes a quick-start module responsive to the quick-start enable signal, and configured to drive the boost converter at a relatively high duty-cycle and so that the boost converter delivers an output current that satisfies a second threshold in order to charge the capacitive element arranged at the output.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: February 28, 2017
    Inventors: Wendy Ng, Yin Chun Yeung, Michael Lee Scheel
  • Patent number: 9585211
    Abstract: Various implementations include circuits, devices and/or methods that enable the repeated generation of controlled surges with lower risk of component failure. Some implementations include a discharge control assembly including a discharge circuit and a controller. In some implementations, the discharge circuit is selectively connectable to a driver circuit, and the discharge circuit is configured to provide a dominant discharge path for the driver circuit when the driver circuit is effectively decoupled from a first load in order to decay an electrical condition of the driver circuit produced prior to the driver circuit being effectively decoupled from the first load. In some implementations, the controller is configured to selectively connect the driver circuit to a combination of the discharge circuit and the first load, and in at least one combination the discharge circuit is effectively coupled to the driver circuit when the first load is effectively decoupled from the driver circuit.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: February 28, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventors: Wendy Ng, George A. Hariman
  • Publication number: 20160241143
    Abstract: In one implementation, a voltage boost assembly including a boost converter having a capacitive element arranged at an output, and an inductive element connectable to an electrical supply. The voltage boost assembly also includes a sensor assembly provided to generate a quick-start enable signal in response to detecting that an electrical condition relative to an electrical output of the boost converter has breached a first threshold. The voltage boost assembly further includes a quick-start module responsive to the quick-start enable signal, and configured to drive the boost converter at a relatively high duty-cycle and so that the boost converter delivers an output current that satisfies a second threshold in order to charge the capacitive element arranged at the output.
    Type: Application
    Filed: February 12, 2016
    Publication date: August 18, 2016
    Inventors: Wendy NG, Yin Chun YEUNG, Michael Lee SCHEEL
  • Publication number: 20150077014
    Abstract: Various implementations include circuits, devices and/or methods that enable the repeated generation of controlled surges with lower risk of component failure. Some implementations include a discharge control assembly including a discharge circuit and a controller. In some implementations, the discharge circuit is selectively connectable to a driver circuit, and the discharge circuit is configured to provide a dominant discharge path for the driver circuit when the driver circuit is effectively decoupled from a first load in order to decay an electrical condition of the driver circuit produced prior to the driver circuit being effectively decoupled from the first load. In some implementations, the controller is configured to selectively connect the driver circuit to a combination of the discharge circuit and the first load, and in at least one combination the discharge circuit is effectively coupled to the driver circuit when the first load is effectively decoupled from the driver circuit.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 19, 2015
    Inventors: Wendy Ng, George A. Hariman
  • Patent number: 7907061
    Abstract: In an embodiment, a proximity sensor includes a driver, a photo-diode (PD) and an analog-to-digital converter (ADC). The proximity sensor can also include a controller to control the driver. The driver selectively drives a light source, e.g., an infrared (IR) light emitting diode (LED). The PD, which produces a current signal indicative of the intensity of light detected by the PD, is capable of detecting both ambient light and light produced by the light source that is reflected off an object. The ADC receives one or more portion of the current signal produced by the PD. The ADC produces one or more digital output that can be used to estimate the proximity of an object to the PD in a manner that compensates for ambient light detected by the PD and transient changes to the detected ambient light.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: March 15, 2011
    Assignee: Intersil Americas Inc.
    Inventors: Xijian Lin, Zhong Li, Wendy Ng, Phillip J. Benzel, Oleg Steciw
  • Publication number: 20090121889
    Abstract: In an embodiment, a proximity sensor includes a driver, a photo-diode (PD) and an analog-to-digital converter (ADC). The proximity sensor can also include a controller to control the driver. The driver selectively drives a light source, e.g., an infrared (IR) light emitting diode (LED). The PD, which produces a current signal indicative of the intensity of light detected by the PD, is capable of detecting both ambient light and light produced by the light source that is reflected off an object. The ADC receives one or more portion of the current signal produced by the PD. The ADC produces one or more digital output that can be used to estimate the proximity of an object to the PD in a manner that compensates for ambient light detected by the PD and transient changes to the detected ambient light.
    Type: Application
    Filed: April 10, 2008
    Publication date: May 14, 2009
    Applicant: INTERSIL AMERICAS INC.
    Inventors: Xijian Lin, Zhong Li, Wendy Ng, Phillip J. Benzel, Oleg Steciw
  • Patent number: 7471071
    Abstract: One embodiment of the invention is a hybrid boost regulator that includes a conventional boost regulator chip that operates when its input voltage is above 2.5 volts and a pre-boost circuit that operates when its input voltage is above 1 volt. A single 1.5 volt battery may be used to power the hybrid boost regulator. The pre-boost circuit is connected to the voltage input terminal of the boost regulator chip. The pre-boost circuit boosts the battery voltage (e.g., 1.5v) at an output terminal of the hybrid boost regulator to approximately the minimum operating voltage (e.g., 2.5v) of the boost regulator chip. Since this pre-boosted voltage is applied to the voltage input terminal of the boost regulator chip, the boost regulator chip will become operational when the ramping output voltage of the hybrid boost regulator exceeds about 2.5 volts. Once the boost regulator chip is operational, the pre-boost circuit is then turned off, and the boost regulator chip runs off the 1.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: December 30, 2008
    Assignee: Micrel, Inc.
    Inventors: Wendy Ng, Charles Vinn, Ramesh Selvaraj
  • Publication number: 20080122417
    Abstract: One embodiment of the invention is a hybrid boost regulator that includes a conventional boost regulator chip that operates when its input voltage is above 2.5 volts and a pre-boost circuit that operates when its input voltage is above 1 volt. A single 1.5 volt battery may be used to power the hybrid boost regulator. The pre-boost circuit is connected to the voltage input terminal of the boost regulator chip. The pre-boost circuit boosts the battery voltage (e.g., 1.5 v) at an output terminal of the hybrid boost regulator to approximately the minimum operating voltage (e.g., 2.5 v) of the boost regulator chip. Since this pre-boosted voltage is applied to the voltage input terminal of the boost regulator chip, the boost regulator chip will become operational when the ramping output voltage of the hybrid boost regulator exceeds about 2.5 volts. Once the boost regulator chip is operational, the pre-boost circuit is then turned off, and the boost regulator chip runs off the 1.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 29, 2008
    Applicant: MICREL, INC.
    Inventors: Wendy Ng, Charles Vinn, Ramesh Selvaraj