Patents by Inventor Vigneshwaran Kalaimani

Vigneshwaran Kalaimani 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).

  • Driving light emitting diodes and display apparatus
    Patent number: 10939525
    Abstract: Systems and methods for light emitting diodes (LEDs) circuits are provided. Aspects include a set of light emitting diodes (LEDs) arranged in series between a first node and a second node, a power supply coupled to the first node, a first switching element arranged in series between the first node and a third node, wherein the first switching element is in parallel with the set of LEDs, a first charge pump coupled to the third node, a controller configured to operate the first switching element by providing a control voltage for switching the first switching element between an ON and an OFF, wherein the control voltage comprises a switching frequency, and wherein the first charge pump is charged by the power supply responsive to the switching element being in an ON state.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: March 2, 2021
    Assignee: GOODRICH LIGHTING SYSTEMS, INC.
    Inventors: Rajkumar Sengodan, Vigneshwaran Kalaimani
  • DRIVING LIGHT EMITTING DIODES AND DISPLAY APPARATUS
    Publication number: 20200337125
    Abstract: Systems and methods for light emitting diodes (LEDs) circuits are provided. Aspects include a set of light emitting diodes (LEDs) arranged in series between a first node and a second node, a power supply coupled to the first node, a first switching element arranged in series between the first node and a third node, wherein the first switching element is in parallel with the set of LEDs, a first charge pump coupled to the third node, a controller configured to operate the first switching element by providing a control voltage for switching the first switching element between an ON and an OFF, wherein the control voltage comprises a switching frequency, and wherein the first charge pump is charged by the power supply responsive to the switching element being in an ON state.
    Type: Application
    Filed: June 19, 2019
    Publication date: October 22, 2020
    Inventors: Rajkumar Sengodan, Vigneshwaran Kalaimani