Patents by Inventor Shih-Kai HE

Shih-Kai HE 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).

  • ACTIVE NOISE CONTROL CIRCUIT WITH MULTIPLE FILTERS CONNECTED IN PARALLEL FASHION AND ASSOCIATED METHOD
    Publication number: 20240112665
    Abstract: An active noise control (ANC) circuit is used for generating an anti-noise signal, and has a plurality of filters including at least one first filter and at least one second filter. The at least one first filter generates at least one first filter output, wherein each of the at least one first filter has at least one non-static filter and at least one static filter connected in a series fashion. The at least one second filter generates at least one second filter output, wherein each of the at least one second filter has at least one adaptive filter. The anti-noise signal is jointly controlled by the at least one first filter output and the at least one second filter output. The at least one first filter and the at least one second filter are connected in a parallel fashion.
    Type: Application
    Filed: May 21, 2023
    Publication date: April 4, 2024
    Applicant: Airoha Technology Corp.
    Inventors: Chao-Ling Hsu, Li-Wen Chi, Shih-Kai He
  • ACTIVE NOISE CONTROL CIRCUIT WITH MULTIPLE FILTERS CONNECTED IN PARALLEL FASHION AND ASSOCIATED METHOD
    Publication number: 20230335100
    Abstract: An active noise control (ANC) circuit is used for generating an anti-noise signal, and has a plurality of filters including at least one first filter and at least one second filter. The at least one first filter generates at least one first filter output, wherein each of the at least one first filter has a first filter type. The at least one second filter generates at least one second filter output, wherein each of the at least one second filter has a second filter type different from the first filter type. The anti-noise signal is jointly controlled by the at least one first filter output and the at least one second filter output. The at least one first filter and the at least one second filter are connected in a parallel fashion.
    Type: Application
    Filed: November 1, 2022
    Publication date: October 19, 2023
    Applicant: Airoha Technology Corp.
    Inventors: Chao-Ling Hsu, Li-Wen Chi, Shih-Kai He
  • AUDIO PROCESSING DEVICE
    Publication number: 20230186890
    Abstract: The disclosure provides an audio processing device comprising a first filter and a second filter. The first filter is configured to generate a first filtered signal based on an error signal, the error signal representative of audible sound at a target space. The second filter is configured to generate a second filtered signal based on the error signal. An anti-noise signal is generated based on the first filtered signal and the second filtered signal, and the anti-noise signal is included in the error signal. The first filter is connected to the second filter in parallel.
    Type: Application
    Filed: July 1, 2022
    Publication date: June 15, 2023
    Inventors: Kai-Sheng CHEN, En-Tai KUO, Dong-Jun LIN, Shih-Kai HE