Patents by Inventor Yunni Li

Yunni Li 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).

  • DISPLAY DEVICE
    Publication number: 20240135843
    Abstract: The present disclosure provides a display device. The display device includes a rotating light bar and a driving unit. The driving unit is connected to a center point of the rotating light bar, and the rotating light bar is configured to rotate with the center point of the rotating light bar as an axis. The rotating light bar includes light emitting device groups arranged along a width direction of the rotating light bar, each of the light emitting device groups includes light emitting devices arranged along a length direction of the rotating light bar, and the light emitting devices in two adjacent ones of the light emitting device groups are staggered in the length direction of the rotating light bar.
    Type: Application
    Filed: November 9, 2022
    Publication date: April 25, 2024
    Inventors: Yunni CHEN, Fancheng LIU, Guowei ZHA, Zhifu LI
  • Power conversion method using a synergetic control of two power converters
    Patent number: 11894775
    Abstract: A power conversion method is disclosed. The method includes operating a PFC converter configured to receive three input voltages and provide a DC link voltage between DC link nodes in one of at least two different operating modes, and operating an SR converter coupled to the PFC converter via the DC link nodes in one of at least two different operating modes dependent on an output voltage of the SR converter. Operating the SR converter includes regulating a voltage level of the DC link voltage dependent on a DC link voltage reference, and the at least two different operating modes of the SR converter include a buck mode and a series resonant mode.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: February 6, 2024
    Assignee: Infineon Technologies Austria AG
    Inventors: Johann Walter Kolar, Yunni Li, Jannik Robin Schaefer
  • POWER CONVERSION METHOD USING A SYNERGETIC CONTROL OF TWO POWER CONVERTERS
    Publication number: 20220085725
    Abstract: A power conversion method is disclosed. The method includes operating a PFC converter configured to receive three input voltages and provide a DC link voltage between DC link nodes in one of at least two different operating modes, and operating an SR converter coupled to the PFC converter via the DC link nodes in one of at least two different operating modes dependent on an output voltage of the SR converter. Operating the SR converter includes regulating a voltage level of the DC link voltage dependent on a DC link voltage reference, and the at least two different operating modes of the SR converter include a buck mode and a series resonant mode.
    Type: Application
    Filed: September 9, 2021
    Publication date: March 17, 2022
    Inventors: Johann Walter Kolar, Yunni Li, Jannik Robin Schaefer