Patents by Inventor Jun-Shiung Huang

Jun-Shiung Huang 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).

  • Safety capacitor discharging method and apparatus for AC-to-DC converters
    Patent number: 8305047
    Abstract: The present invention discloses a safety capacitor discharging method for AC-to-DC converters, wherein the AC-to-DC converters have a safety capacitor connected between two line voltages, the method comprising the steps of: detecting at least one line voltage to generate a line-off signal, wherein the line-off signal is at a first state when the peak voltage of the at least one line voltage is above a reference voltage, and the line-off signal is at a second state when the peak voltage of the at least one line voltage is below the reference voltage; and performing discharge of the safety capacitor by generating a conduction path between two plates of the safety capacitor when the line-off signal is at the second state. The present invention also provides a safety capacitor discharging apparatus for AC-to-DC converters.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: November 6, 2012
    Assignee: Grenergy Opto, Inc.
    Inventors: Chun-Liang Lin, Chi-Hao Wu, Ko-Ming Lin, Huang-Chi Lin, Chang-Ling Sha, Jun-Shiung Huang
  • SAFETY CAPACITOR DISCHARGING METHOD AND APPARATUS FOR AC-TO-DC CONVERTERS
    Publication number: 20110068751
    Abstract: The present invention discloses a safety capacitor discharging method for AC-to-DC converters, wherein the AC-to-DC converters have a safety capacitor connected between two line voltages, the method comprising the steps of: detecting at least one line voltage to generate a line-off signal, wherein the line-off signal is at a first state when the peak voltage of the at least one line voltage is above a reference voltage, and the line-off signal is at a second state when the peak voltage of the at least one line voltage is below the reference voltage; and performing discharge of the safety capacitor by generating a conduction path between two plates of the safety capacitor when the line-off signal is at the second state. The present invention also provides a safety capacitor discharging apparatus for AC-to-DC converters.
    Type: Application
    Filed: September 24, 2009
    Publication date: March 24, 2011
    Applicant: GRENERGY OPTO, INC.
    Inventors: Chun-Liang LIN, Chi-Hao WU, Ko-Ming LIN, Huang-Chi LIN, Chang-Ling SHA, Jun-Shiung HUANG
  • STANDBY POWER REDUCTION METHOD AND APPARATUS FOR SWITCHING POWER APPLICATIONS
    Publication number: 20110050308
    Abstract: The present invention discloses a standby power reduction method and apparatus for switching power applications, the method comprising the steps of: performing a hysteresis comparison on a supply voltage to generate a selecting signal having a first state and a second state, wherein the hysteresis comparison has a high threshold voltage compared to the supply voltage when the selecting signal is at the first state, and the hysteresis comparison has a low threshold voltage compared to the supply voltage when the selecting signal is at the second state; and determining a UVLO_ON voltage according to the selecting signal, wherein the UVLO_ON voltage is equal to a first level when the selecting signal is at the first state, and the UVLO_ON voltage is equal to a second level when the selecting signal is at the second state.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 3, 2011
    Applicant: Grenergy Opto, Inc.
    Inventors: Jun-Shiung Huang, Chern-Lin Chen, Chang-Ling Sha, Ko-Yen Lee