Patents by Inventor Chui-Hua Chiu

Chui-Hua Chiu 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).

  • Method for detecting leading edge blanking parameter of power management chip
    Patent number: 7646191
    Abstract: A method for detecting a leading edge blanking parameter of a power management chip includes generating a pulse signal and inputting the pulse signal to the power management chip, wherein the amplitude of the pulse signal will cause a PWM signal of the power management chip to change its duty cycle; detecting the PWM signal to generate a detecting result; when the detecting result indicates that the duty cycle of the PWM signal does not change, adjusting a pulse width of the pulse signal to generate an adjusted pulse signal, inputting the adjusted pulse signal to the power management chip and detecting the PWM signal; and when the detecting result indicates that the duty cycle of the PWM signal changes, determining the leading edge blanking parameter of the power management chip according to the pulse width of the pulse signal.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: January 12, 2010
    Assignee: Leadtrend Technology Corp.
    Inventor: Chui-Hua Chiu
  • METHOD FOR DETECTING LEADING EDGE BLANKING PARAMETER OF POWER MANAGEMENT CHIP
    Publication number: 20090091353
    Abstract: A method for detecting a leading edge blanking parameter of a power management chip includes generating a pulse signal and inputting the pulse signal to the power management chip, wherein the amplitude of the pulse signal will cause a PWM signal of the power management chip to change its duty cycle; detecting the PWM signal to generate a detecting result; when the detecting result indicates that the duty cycle of the PWM signal does not change, adjusting a pulse width of the pulse signal to generate an adjusted pulse signal, inputting the adjusted pulse signal to the power management chip and detecting the PWM signal; and when the detecting result indicates that the duty cycle of the PWM signal changes, determining the leading edge blanking parameter of the power management chip according to the pulse width of the pulse signal.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 9, 2009
    Inventor: Chui-Hua Chiu