Patents by Inventor Nien-Hui Kung

Nien-Hui Kung 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: 20200357375
    Abstract: The present invention provides a device including a sound detector and a noise cancellation component. In the operations of the device, the sound detector is configured to receive an environment sound obtained from a microphone, and determine if the environment sound has a meaningful signal or not to generate a detection result; and the noise cancellation component is configured to perform a noise cancellation operation based on the detection result to generate an output signal to a speaker.
    Type: Application
    Filed: March 30, 2020
    Publication date: November 12, 2020
    Inventors: Kuan-Ta Chen, Nien-Hui Kung, Jing-Meng Liu
  • Patent number: 10326361
    Abstract: A low dropout regulator that produces an output includes a comparison circuit, configured to compare a signal representative of the output and a reference signal to produce a comparison result. The low dropout regulator also includes a loop controller, coupled to the comparison circuit, configured to generate an output circuit control signal based at least in part on the comparison result. The low dropout regulator also includes an output circuit, comprising two or more output stages, configured to adjust a number of active output stages of the two or more output stages based on the output circuit control signal.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: June 18, 2019
    Assignee: MediaTek Inc.
    Inventors: Nien-Hui Kung, Chia-Hua Chou, Yen-Hsun Hsu
  • Patent number: 10261116
    Abstract: An apparatus for performing resistance control on a current sensing component in an electronic device and an associated method are provided. For example, the apparatus may comprise a power switching unit and a feedback module, and the power switching unit is utilized as the current sensing component when the power switching unit enables the power path. The feedback module may comprise: a power switching unit replica that receives a first voltage at the battery terminal and outputs a second voltage; a first current source, coupled between the power switching unit replica and a ground terminal, arranged to receive the second voltage; a reference voltage generator that generates a third voltage; and an error amplifier that receives the second voltage and the third voltage and outputs a fourth voltage, wherein the feedback module controls both of the power switching unit and the power switching unit replica according to the fourth voltage.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: April 16, 2019
    Assignee: MEDIATEK INC.
    Inventor: Nien-Hui Kung
  • Patent number: 10230259
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip. For example, the charger may include: a plurality of terminals that are positioned on the charger chip, where the plurality of terminals may include a third terminal and a fourth terminal; a plurality of switching units, positioned on the charger chip; and a control circuit, positioned on the charger chip and coupled to the plurality of switching units. The third terminal and the fourth terminal may be arranged for installing an inductor, where the inductor may be utilized by the charger when the control circuit configures the charger into any of at least two hardware configurations within a plurality of hardware configurations.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: March 12, 2019
    Assignee: MEDIATEK INC.
    Inventors: Nien-Hui Kung, Chien-Wei Kuan, Yen-Hsun Hsu
  • Patent number: 10150378
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip. For example, the charger may include: a first terminal, positioned on the charger chip; a second terminal, positioned on the charger chip and selectively coupled to the first terminal; a third terminal, positioned on the charger chip and selectively coupled to the second terminal; a fourth terminal, positioned on the charger chip and coupled to the third terminal; a first power output path, coupled to the fourth terminal, arranged for providing a first voltage level; and a second power output path, coupled to the third terminal, arranged for selectively providing a second voltage level that is greater than the first voltage level.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: December 11, 2018
    Assignee: MEDIATEK INC.
    Inventor: Nien-Hui Kung
  • Publication number: 20180262105
    Abstract: A low dropout regulator that produces an output includes a comparison circuit, configured to compare a signal representative of the output and a reference signal to produce a comparison result. The low dropout regulator also includes a loop controller, coupled to the comparison circuit, configured to generate an output circuit control signal based at least in part on the comparison result. The low dropout regulator also includes an output circuit, comprising two or more output stages, configured to adjust a number of active output stages of the two or more output stages based on the output circuit control signal.
    Type: Application
    Filed: February 27, 2018
    Publication date: September 13, 2018
    Applicant: MediaTek Inc.
    Inventors: Nien-Hui Kung, Chia-Hua Chou, Yen-Hsun Hsu
  • Patent number: 9973075
    Abstract: A method and apparatus for performing adaptive input current control in an electronic device are provided, where the method may include the steps of: before limiting an input current of a regulator of the electronic device to a target current value, monitoring the input current of the regulator according to a reference current, and decreasing the reference current, to make the reference current change starting from one of a plurality of predetermined reference current values, wherein the input current is obtained from a power source; detecting an input voltage of the regulator to generate a detection signal, to selectively trigger limiting output power of the regulator; and at a time point when the reference current becomes smaller than the input current, limiting the input current of the regulator to the target current value with a latest reference current value of the reference current being utilized as the target current value.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: May 15, 2018
    Assignee: MediaTek Inc.
    Inventors: Nien-Hui Kung, Kuo-Chang Lo, Chia-Hsiang Lin
  • Patent number: 9866060
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip, and the charger may include: a plurality of terminals that are positioned on the charger chip; a plurality of switching units, positioned on the charger chip; and at least one control circuit, positioned on the charger chip and coupled to the plurality of switching units. For example, the control circuit may be arranged for controlling the plurality of switching units to allow charging using any of a plurality of adaptors corresponding to different voltages, wherein a first charging path and a second charging path of the charger correspond to a first adaptor and a second adaptor within the plurality of adaptors, respectively.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: January 9, 2018
    Assignee: MEDIATEK INC.
    Inventors: Nien-Hui Kung, Chih-Wei Lin, Yen-Hsun Hsu
  • Patent number: 9838015
    Abstract: An apparatus for performing level shift control in an electronic device includes an input stage positioned in a level shifter of the electronic device, and an output stage positioned in the level shifter and coupled to the input stage through a set of intermediate nodes. The input stage is arranged for receiving at least one input signal of the level shifter through at least one input terminal of the input stage and controlling voltage levels of the set of intermediate nodes according to the at least one input signal. The input stage includes a hybrid current control circuit coupled to the at least one input terminal and arranged for performing current control for the input stage. The hybrid current control circuit is equipped with multiple sets of parallel paths for controlling currents passing through the set of intermediate nodes, respectively, each set may include two or more paths in parallel.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: December 5, 2017
    Assignee: MEDIATEK INC.
    Inventor: Nien-Hui Kung
  • Patent number: 9831697
    Abstract: An apparatus for performing multi-loop power control in an electronic device is provided, where the apparatus may include at least one portion (e.g. a portion or all) of the electronic device. More particularly, the apparatus may include a first amplifier that is positioned in a first feedback loop of the electronic device and coupled to a power control terminal of the electronic device, and a second amplifier that is positioned in a second feedback loop of the electronic device and coupled to the power control terminal. For example, the apparatus may further include a compensation circuit that is coupled to the first amplifier and the second amplifier. In another example, the apparatus may further include a selection control circuit that is coupled to the first amplifier and the second amplifier. An associated method such as an operational method of the above apparatus is also provided.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: November 28, 2017
    Assignee: MEDIATEK INC.
    Inventor: Nien-Hui Kung
  • Patent number: 9825480
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip. For example, the charger may include: a first terminal, positioned on the charger chip; a second terminal, positioned on the charger chip and selectively coupled to the first terminal; a third terminal, positioned on the charger chip and selectively coupled to the second terminal; a fourth terminal, positioned on the charger chip and coupled to the third terminal; a first power output path, coupled to the fourth terminal, arranged for providing a first voltage level; and a second power output path, coupled to the third terminal, arranged for selectively providing a second voltage level that is greater than the first voltage level.
    Type: Grant
    Filed: October 25, 2015
    Date of Patent: November 21, 2017
    Assignee: MEDIATEK INC.
    Inventor: Nien-Hui Kung
  • Publication number: 20170313200
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip. For example, the charger may include: a first terminal, positioned on the charger chip; a second terminal, positioned on the charger chip and selectively coupled to the first terminal; a third terminal, positioned on the charger chip and selectively coupled to the second terminal; a fourth terminal, positioned on the charger chip and coupled to the third terminal; a first power output path, coupled to the fourth terminal, arranged for providing a first voltage level; and a second power output path, coupled to the third terminal, arranged for selectively providing a second voltage level that is greater than the first voltage level.
    Type: Application
    Filed: July 11, 2017
    Publication date: November 2, 2017
    Inventor: Nien-Hui Kung
  • Patent number: 9731613
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip. For example, the charger may include: a first terminal, positioned on the charger chip; a second terminal, positioned on the charger chip and selectively coupled to the first terminal; a third terminal, positioned on the charger chip and selectively coupled to the second terminal; a fourth terminal, positioned on the charger chip and coupled to the third terminal; a first power output path, coupled to the fourth terminal, arranged for providing a first voltage level; and a second power output path, coupled to the third terminal, arranged for selectively providing a second voltage level that is greater than the first voltage level.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: August 15, 2017
    Assignee: MEDIATECK INC.
    Inventor: Nien-Hui Kung
  • Publication number: 20170222461
    Abstract: A method for performing performance control in an electronic device with aid of management of multiple charger circuits (e.g. first and second charger circuits) and an associated apparatus are provided. The method includes: applying each of a first set of candidate parameter settings of the first charger circuit to the first charger circuit, and calculating a first score regarding the first charger circuit according to at least one first index of the electronic device; applying each of a second set of candidate parameter settings of the second charger circuit to the second charger circuit, and calculating a second score regarding the second charger circuit according to at least one second index of the electronic device; and optimizing overall performance of the electronic device by applying a first parameter setting to the first charger circuit and by applying a second parameter setting to the second charger circuit.
    Type: Application
    Filed: August 22, 2016
    Publication date: August 3, 2017
    Inventor: Nien-Hui Kung
  • Publication number: 20170179757
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip, and the charger may include: a plurality of terminals that are positioned on the charger chip; a plurality of switching units, positioned on the charger chip; and at least one control circuit, positioned on the charger chip and coupled to the plurality of switching units. For example, the control circuit may be arranged for controlling the plurality of switching units to allow charging using any of a plurality of adaptors corresponding to different voltages, wherein a first charging path and a second charging path of the charger correspond to a first adaptor and a second adaptor within the plurality of adaptors, respectively.
    Type: Application
    Filed: May 18, 2016
    Publication date: June 22, 2017
    Inventors: Nien-Hui Kung, Chih-Wei Lin, Yen-Hsun Hsu
  • Patent number: 9564770
    Abstract: The present invention discloses a power management circuit, and a control circuit and a control method thereof. The power management circuit converts an input voltage at an input terminal to an output voltage at an output terminal, and charges a battery from the output terminal. The present invention detects a power supplying capability of the input terminal to generate an adjustment signal, and adjusts the output voltage according to the adjustment signal.
    Type: Grant
    Filed: February 8, 2014
    Date of Patent: February 7, 2017
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventor: Nien-Hui Kung
  • Publication number: 20170025944
    Abstract: A method and apparatus for performing adaptive input current control in an electronic device are provided, where the method may include the steps of: before limiting an input current of a regulator of the electronic device to a target current value, monitoring the input current of the regulator according to a reference current, and decreasing the reference current, to make the reference current change starting from one of a plurality of predetermined reference current values, wherein the input current is obtained from a power source; detecting an input voltage of the regulator to generate a detection signal, to selectively trigger limiting output power of the regulator; and at a time point when the reference current becomes smaller than the input current, limiting the input current of the regulator to the target current value with a latest reference current value of the reference current being utilized as the target current value.
    Type: Application
    Filed: January 27, 2016
    Publication date: January 26, 2017
    Inventors: Nien-Hui Kung, Kuo-Chang Lo, Chia-Hsiang Lin
  • Publication number: 20170023626
    Abstract: An apparatus for performing resistance control on a current sensing component in an electronic device and an associated method are provided. For example, the apparatus may comprise a power switching unit and a feedback module, and the power switching unit is utilized as the current sensing component when the power switching unit enables the power path. The feedback module may comprise: a power switching unit replica that receives a first voltage at the battery terminal and outputs a second voltage; a first current source, coupled between the power switching unit replica and a ground terminal, arranged to receive the second voltage; a reference voltage generator that generates a third voltage; and an error amplifier that receives the second voltage and the third voltage and outputs a fourth voltage, wherein the feedback module controls both of the power switching unit and the power switching unit replica according to the fourth voltage.
    Type: Application
    Filed: February 22, 2016
    Publication date: January 26, 2017
    Inventor: Nien-Hui Kung
  • Publication number: 20160336778
    Abstract: An apparatus for performing multi-loop power control in an electronic device is provided, where the apparatus may include at least one portion (e.g. a portion or all) of the electronic device. More particularly, the apparatus may include a first amplifier that is positioned in a first feedback loop of the electronic device and coupled to a power control terminal of the electronic device, and a second amplifier that is positioned in a second feedback loop of the electronic device and coupled to the power control terminal. For example, the apparatus may further include a compensation circuit that is coupled to the first amplifier and the second amplifier. In another example, the apparatus may further include a selection control circuit that is coupled to the first amplifier and the second amplifier. An associated method such as an operational method of the above apparatus is also provided.
    Type: Application
    Filed: October 26, 2015
    Publication date: November 17, 2016
    Inventor: Nien-Hui Kung
  • Publication number: 20160269028
    Abstract: An apparatus for performing level shift control in an electronic device includes an input stage positioned in a level shifter of the electronic device, and an output stage positioned in the level shifter and coupled to the input stage through a set of intermediate nodes. The input stage is arranged for receiving at least one input signal of the level shifter through at least one input terminal of the input stage and controlling voltage levels of the set of intermediate nodes according to the at least one input signal. The input stage includes a hybrid current control circuit coupled to the at least one input terminal and arranged for performing current control for the input stage. The hybrid current control circuit is equipped with multiple sets of parallel paths for controlling currents passing through the set of intermediate nodes, respectively, each set may include two or more paths in parallel.
    Type: Application
    Filed: August 20, 2015
    Publication date: September 15, 2016
    Inventor: Nien-Hui Kung