Patents by Inventor Yuyun LIU

Yuyun LIU 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).

  • Patent number: 10511905
    Abstract: A method comprises: collecting an input audio signal; performing frequency-division processing on the input audio signal, extracting a high-frequency signal and a low-frequency signal to transmit respectively, and reserving one path of original audio signal; performing dynamic gain processing on the low-frequency signal adopting an Automatic Gain Control (AGC) algorithm, and performing low-pass filtering enhancement processing on the original audio signal adopting a static low-frequency enhancement algorithm; and subjecting the high-frequency signal, the processed low-frequency signal and the processed original audio signal to weighted summation to obtain a final output audio signal, the weight coefficients of the high frequency signal, the processed low-frequency signal and the processed original audio signal being a, b and c respectively, where the values of a, b and c range from 0 to 1, and a+b+c=1.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: December 17, 2019
    Assignee: SHENZHEN GRANDSUN ELECTRONIC CO., LTD.
    Inventors: Yuyun Liu, Xinlong Peng, Haiquan Wu, Ruiwen Shi
  • Publication number: 20190232278
    Abstract: A microfluidic movement control method utilizing light, a device, and a microtubule actuator (2). The microtubule actuator (2) is prepared by utilizing a light-induced deformed smart polymer material. The smart polymer material forms, by an exciting beam, asymmetrical deformation, and is induced to produce a capillary action to drive a microfluid movement. The embodiment can drive microfluids having various polarities and compositions, and can drive creep of the microfluid, and can even drive the microfluid to generate a 3D movement trail. The embodiment has found a wide range of potential applications in controllable microfluidic transport, micro-reaction systems, micro-mechanic systems, IC laboratories, and others.
    Type: Application
    Filed: February 1, 2019
    Publication date: August 1, 2019
    Inventors: Yanlei Yu, Jiuan Lv, Jia Wei, Yuyun Liu
  • Publication number: 20170311078
    Abstract: A method comprises: collecting an input audio signal; performing frequency-division processing on the input audio signal, extracting a high-frequency signal and a low-frequency signal to transmit respectively, and reserving one path of original audio signal; performing dynamic gain processing on the low-frequency signal adopting an Automatic Gain Control (AGC) algorithm, and performing low-pass filtering enhancement processing on the original audio signal adopting a static low-frequency enhancement algorithm; and subjecting the high-frequency signal, the processed low-frequency signal and the processed original audio signal to weighted summation to obtain a final output audio signal, the weight coefficients of the high frequency signal, the processed low-frequency signal and the processed original audio signal being a, b and c respectively, where the values of a, b and c range from 0 to 1, and a+b+c=1.
    Type: Application
    Filed: July 11, 2017
    Publication date: October 26, 2017
    Applicant: SHENZHEN GRANDSUN ELECTRONIC CO.,LTD.
    Inventors: Yuyun LIU, Xinlong PENG, Haiquan WU, Ruiwen SHI