Patents by Inventor Foo Wing Chong

Foo Wing Chong 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: 9084303
    Abstract: In a device and method for providing electrical current to a Light Emitting diode (LED) via switch mode power converter, at least one Integrated Circuit (IC) is provided and uses a hardware description language; an electronic switch configurable to have a switching time period. An Analog to Digital converter (ADC) is configured to obtain a digitized voltage input. A voltage comparator is configured to obtain a discharge time of an inductive element of the switch mode power converter at each time period. During operation, the IC obtains the digitized voltage input, the discharge time of the inductive element, the desired electrical current, a reference constant, and the switching time period of the electronic switch as inputs and calculates the switch-on time of the electronic switch at each switching time period, so that the switch-on time of the electronic switch regulates the electrical current flowing into the LED.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 14, 2015
    Assignee: Opulent Electronics International Pte. Ltd
    Inventors: Kai Fook Francis Wee, Andrea Stona, Leopoldo Groppi, Kwok Wing Man, Foo Wing Chong
  • Publication number: 20130106304
    Abstract: In a device and method for providing electrical current to a Light Emitting diode (LED) via switch mode power converter, at least one Integrated Circuit (IC) is provided and uses a hardware description language; an electronic switch configurable to have a switching time period. An Analogue to Digital converter (ADC) is configured to obtain a digitized voltage input. A voltage comparator is configured to obtain a discharge time of an inductive element of the switch mode power converter at each time period. During operation, the IC obtains the digitized voltage input, the discharge time of the inductive element, the desired electrical current, a reference constant, and the switching time period of the electronic switch as inputs and calculates the switch-on time of the electronic switch at each switching time period, so that the switch-on time of the electronic switch regulates the electrical current flowing into the LED.
    Type: Application
    Filed: June 4, 2010
    Publication date: May 2, 2013
    Applicant: OPULENT ELECTRONICS INTERNATIONAL PTE LTD
    Inventors: Kai Fook Francis Wee, Andrea Stona, Leopoldo Groppi, Kwok Wing Man, Foo Wing Chong