Patents by Inventor Xiaohan Zhao

Xiaohan Zhao 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).

  • Digital Voice Packet Loss Concealment Using Deep Learning
    Publication number: 20210125622
    Abstract: A method for recovering a current frame of an audio stream includes detecting that a current packet is lost, the current packet including an audio signal; splitting one or more frames into respective high-band signals and respective low-band signals, the one or more frames precede the current frame in the audio stream; inferring a current low-band signal of the current frame using, as inputs to a machine-learning model, the respective low-band signals; combining the inferred current low-band signal with the respective high-band signals to obtain the current frame; and adding the current frame to a playout buffer.
    Type: Application
    Filed: October 29, 2019
    Publication date: April 29, 2021
    Inventor: Xiaohan Zhao
  • Force feedback handle device with a degree-of-freedom and working method thereof
    Patent number: 10394271
    Abstract: A force feedback handle device with a degree-of-freedom includes: a driving part (1), a link part (2) and a frame part (3); wherein the driving part (1) and the link part (2) are both installed on a top board (9), and a rotation axis of the link part (2) coincides with a rotation axis of the driving part (1); the driving part (1), the link part (2) and the frame part (3) are fixed and connected by bolts. A working method of the force feedback handle device includes four steps. The force feedback device of the invention has low inertia and high stiffness performance, which improves overall interaction performance of the force feedback device. The structure is simple and a manufacturing cost is low.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: August 27, 2019
    Assignee: BEIHANG UNIVERSITY
    Inventors: Yuru Zhang, Dangxiao Wang, Hongdong Zhang, Jian Song, Xiaohan Zhao
  • Force feedback handle device with a degree-of-freedom and working method thereof
    Publication number: 20170235327
    Abstract: A force feedback handle device with a degree-of-freedom includes: a driving part (1), a link part (2) and a frame part (3); wherein the driving part (1) and the link part (2) are both installed on a top board (9), and a rotation axis of the link part (2) coincides with a rotation axis of the driving part (1); the driving part (1), the link part (2) and the frame part (3) are fixed and connected by bolts. A working method of the force feedback handle device includes four steps. The force feedback device of the invention has low inertia and high stiffness performance, which improves overall interaction performance of the force feedback device. The structure is simple and a manufacturing cost is low.
    Type: Application
    Filed: May 4, 2017
    Publication date: August 17, 2017
    Inventors: Yuru Zhang, Dangxiao Wang, Hongdong Zhang, Jian Song, Xiaohan Zhao