Patents by Inventor Yongkang Lv

Yongkang Lv 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).

  • Circuit structure for achieving adaptive function in class-D audio power amplifier circuit
    Patent number: 9331641
    Abstract: Disclosed is a circuit structure for implementing an adaptive function in a class-D audio power amplifier circuit, comprising an operation amplifier, a pulse width modulator and a driver stage that are sequentially and serially connected, an input terminal of the operation amplifier being connected to an external audio signal output terminal, and an output terminal of the driver stage being connected to a loudspeaker and connected to the input terminal of the operation amplifier via a feedback loop. The circuit structure further comprises: one or a plurality of a carrier adaptive circuit, a frequency adaptive circuit, a driver adaptive circuit, a temperature adaptive circuit.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: May 3, 2016
    Assignee: WUXI CHINA RESOURCES SEMICO CO.
    Inventors: Dianjun Zhang, Yongkang Lv, Linjun Wei
  • Circuit Structure For Achieving Adaptive Function In Class-D Audio Power Amplifier Circuit
    Publication number: 20140133678
    Abstract: Disclosed is a circuit structure for implementing an adaptive function in a class-D audio power amplifier circuit, comprising an operation amplifier, a pulse width modulator and a driver stage that are sequentially and serially connected, an input terminal of the operation amplifier being connected to an external audio signal output terminal, and an output terminal of the driver stage being connected to a loudspeaker and connected to the input terminal of the operation amplifier via a feedback loop. The circuit structure further comprises: one or a plurality of a carrier adaptive circuit, a frequency adaptive circuit, a driver adaptive circuit, a temperature adaptive circuit.
    Type: Application
    Filed: December 5, 2012
    Publication date: May 15, 2014
    Applicant: China Resources Semico Co., Ltd
    Inventors: Dianjun Zhang, Yongkang Lv, Linjun Wei