Patents by Inventor Sijun Chen

Sijun Chen 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).

  • High-efficiency low-voltage-power-supply high-power-output audio driver architecture
    Patent number: 9571926
    Abstract: The present invention discloses a high-efficiency low-voltage-power-supply high-power-output audio driver architecture, including: a multi-coil loudspeaker; and a single-input N-output audio power amplifier configured to amplify a received digital audio signal and to output N switch signals for driving the multi-coil loudspeaker, wherein N represents the number of output channels and is a positive integer greater than or equal to 2. By implementing the above mentioned method, the requirement of the high power output under low voltage input is met; the solution improves the output power by means of combination of coils, and, in cooperation with the unique dynamic power allocation technology, the solution achieves the power balance of the multiple coils, so that the output efficiency of the audio driver is greatly improved.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: February 14, 2017
    Assignee: Christopher Technology (Shanghai) Limited
    Inventors: Bai Jianxiong, Shihao Chen, Junxia Chen, Sijun Chen
  • HIGH-EFFICIENCY LOW-VOLTAGE-POWER-SUPPLY HIGH-POWER-OUTPUT AUDIO DRIVER ARCHITECTURE
    Publication number: 20120257771
    Abstract: The present invention discloses a high-efficiency low-voltage-power-supply high-power-output audio driver architecture, including: a multi-coil loudspeaker; and a single-input N-output audio power amplifier configured to amplify a received digital audio signal and to output N switch signals for driving the multi-coil loudspeaker, wherein N represents the number of output channels and is a positive integer greater than or equal to 2. By implementing the above mentioned method, the requirement of the high power output under low voltage input is met; the solution improves the output power by means of combination of coils, and, in cooperation with the unique dynamic power allocation technology, the solution achieves the power balance of the multiple coils, so that the output efficiency of the audio driver is greatly improved.
    Type: Application
    Filed: February 7, 2012
    Publication date: October 11, 2012
    Applicant: CHIPHOMER TECHNOLOGY (SHANGHAI) LIMITED
    Inventors: Jianxiong Bai, Shihao Chen, Junxia Chen, Sijun Chen