Patents by Inventor Shuo-Wen Chang

Shuo-Wen Chang 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: 9628927
    Abstract: An audio interface circuit including a processor, an audio jack, a first filter circuit, a second filter circuit, a first clamp circuit, a second clamp circuit, a third filter circuit, and a fourth filter circuit is provided. A first clamp circuit and a second clamp circuit between a third and fourth electrodes and a processor, so that the third and fourth electrodes are allowed to be coupled to a microphone.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: April 18, 2017
    Assignee: ASUSTeK COMPUTER INC.
    Inventors: Pei-Yuan Chen, Chyi-Cheng Wang, Chao-Liang Hung, Shuo-Wen Chang, Sheng-Ta Lin
  • Publication number: 20160269813
    Abstract: An audio interface circuit including a processor, an audio jack, a first filter circuit, a second filter circuit, a first clamp circuit, a second clamp circuit, a third filter circuit, and a fourth filter circuit is provided. A first clamp circuit and a second clamp circuit between a third and fourth electrodes and a processor, so that the third and fourth electrodes are allowed to be coupled to a microphone.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Inventors: Pei-Yuan Chen, Chyi-Cheng Wang, Chao-Liang Hung, Shuo-Wen Chang, Sheng-Ta Lin
  • Patent number: 9395734
    Abstract: A control circuit of a power converter includes: an error detection circuit, configured to operably generate an error signal according to a reference signal and a feedback signal when coupling with an external feedback node of an external feedback circuit; an output signal detecting circuit, positioned inside the control circuit, configured to operably receive and detect an output signal of the power converter to generate a representative signal; an on time deciding circuit, coupled with the output signal detecting circuit, configured to operably generate an on time signal according to the representative signal; and a control signal generating circuit, coupled with the error detection circuit and the on time deciding circuit, configured to operably control on time of one or more power switches of the power converter according to the error signal and the on time signal.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: July 19, 2016
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Hung-Yu Cheng, Tzu-Huan Chiu, Shuo-Wen Chang
  • Publication number: 20160070281
    Abstract: A control circuit of a power converter includes: an error detection circuit, configured to operably generate an error signal according to a reference signal and a feedback signal when coupling with an external feedback node of an external feedback circuit; an output signal detecting circuit, positioned inside the control circuit, configured to operably receive and detect an output signal of the power converter to generate a representative signal; an on time deciding circuit, coupled with the output signal detecting circuit, configured to operably generate an on time signal according to the representative signal; and a control signal generating circuit, coupled with the error detection circuit and the on time deciding circuit, configured to operably control on time of one or more power switches of the power converter according to the error signal and the on time signal.
    Type: Application
    Filed: March 26, 2015
    Publication date: March 10, 2016
    Applicant: Richtek Technology Corporation
    Inventors: Hung-Yu CHENG, Tzu-Huan CHIU, Shuo-Wen CHANG
  • Publication number: 20140210439
    Abstract: The present invention discloses a switching regulator and a control circuit thereof. The switching regulator includes a boost or buck-boost power stage, a first operation circuit and a bypass circuit. The power stage controls at least one power transistor switch included therein according to a first operation signal, to convert an input voltage to an output voltage at an output terminal. The first operation circuit generates the first operation signal in response to the output voltage or a related signal thereof. The bypass circuit includes a bypass transistor and a second operation circuit. When it is required to provide power to the output terminal promptly, the second operation circuit turns ON the bypass transistor, and when the input voltage is equal to the output voltage or equal to a sum of the output voltage plus a safety offset value, the second operation circuit turns OFF the bypass transistor.
    Type: Application
    Filed: January 29, 2013
    Publication date: July 31, 2014
    Inventors: Tzu-Huan Chiu, Chung-Lung Pai, Hung-Yu Cheng, Shuo-Wen Chang
  • Patent number: 8512084
    Abstract: An underwater thruster includes a housing unit having a first opening, a cover unit connected to the housing unit and covering the first opening, a supporting unit connected to the housing unit, a motor having a driving shaft that extends through the first opening, a magnetic core unit connected to the driving shaft, a plurality of magnetic intermediate units disposed on the supporting unit and driven by the magnetic core unit, a magnetic surrounding unit driven by the magnetic intermediate units in a rotational speed smaller than the rotational speed of the magnetic core unit, and a propelling unit connected to the magnetic surrounding unit and having a plurality of angularly spaced-apart blades.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 20, 2013
    Inventors: Nai-Jen Chang, Shuo-Wen Chang, Cheng-Chi Huang