Patents by Inventor ChunFeng GU

ChunFeng GU 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).

  • Audio connector and circuitry
    Patent number: 10779097
    Abstract: A device (10) for connection to an audio accessory (20) comprising: a jack socket (14) for connection to a jack plug (25) of the audio accessory (20), a ground connection to a first socket contact (428) which is positioned to mate with a ground return pole of the plug (25). The jack socket (14) comprises a second contact (432) also positioned to mate with the ground return pole of the plug (25). Driver amplifiers (416, 418) comprise an input coupled to the second contact (432) and are configured to superimpose a signal present at the second contact (432) onto received speaker signal. It may achieve reducing the crosstalk which could distort or blur the stereo image.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: September 15, 2020
    Assignee: Cirrus Logic, Inc.
    Inventors: Jonathan Taylor, ChunFeng Gu
  • AUDIO CONNECTOR AND CIRCUITRY
    Publication number: 20190246226
    Abstract: A device (10) for connection to an audio accessory (20) comprising: a jack socket (14) for connection to a jack plug (25) of the audio accessory (20), a ground connection to a first socket contact (428) which is positioned to mate with a ground return pole of the plug (25). The jack socket (14) comprises a second contact (432) also positioned to mate with the ground return pole of the plug (25). Driver amplifiers (416, 418) comprise an input coupled to the second contact (432) and are configured to superimpose a signal present at the second contact (432) onto received speaker signal. It may achieve reducing the crosstalk which could distort or blur the stereo image.
    Type: Application
    Filed: April 10, 2019
    Publication date: August 8, 2019
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Jonathan TAYLOR, ChunFeng GU
  • Audio connector and circuitry
    Patent number: 10306387
    Abstract: A device (10) for connection to an audio accessory (20) comprising: a jack socket (14) for connection to a jack plug (25) of the audio accessory (20), a ground connection to a first socket contact (428) which is positioned to mate with a ground return pole of the plug (25). The jack socket (14) comprises a second contact (432) also positioned to mate with the ground return pole of the plug (25). Driver amplifiers (416, 418) comprise an input coupled to the second contact (432) and are configured to superimpose a signal present at the second contact (432) onto received speaker signal. It may achieve reducing the crosstalk which could distort or blur the stereo image.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: May 28, 2019
    Assignee: Cirrus Logic, Inc.
    Inventors: Jonathan Taylor, ChunFeng Gu
  • AUDIO CONNECTOR AND CIRCUITRY
    Publication number: 20180270593
    Abstract: A device (10) for connection to an audio accessory (20) comprising: a jack socket (14) for connection to a jack plug (25) of the audio accessory (20), a ground connection to a first socket contact (428) which is positioned to mate with a ground return pole of the plug (25). The jack socket (14) comprises a second contact (432) also positioned to mate with the ground return pole of the plug (25). Driver amplifiers (416, 418) comprise an input coupled to the second contact (432) and are configured to superimpose a signal present at the second contact (432) onto received speaker signal. It may achieve reducing the crosstalk which could distort or blur the stereo image.
    Type: Application
    Filed: March 12, 2018
    Publication date: September 20, 2018
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Jonathan TAYLOR, ChunFeng GU