Patents by Inventor Srinivasa M. Baddela

Srinivasa M. Baddela 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).

  • Dimmable LED light fixture having adjustable color temperature
    Patent number: 8710754
    Abstract: Electronic circuitry for color-mixing in an LED light fixture during AC power dimming is disclosed to achieve adjustable color temperature. According to one embodiment, a dimmable LED light fixture has first, second, and third LED light sources, the first and second LED light sources producing white light, the third LED light source producing colored light, the LED driver configured to power the LED light sources by providing a single-channel variable-DC current source having two output terminals, and a current regulator for maintaining the current in the third LED light source path substantially constant as the LED driver output current is decreased when the AC power is reduced by the dimmer module, thereby altering the color of the light produced by the combination of the LED light sources.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: April 29, 2014
    Assignee: Juno Manufacturing LLC
    Inventors: Srinivasa M. Baddela, John G. Serra, Michael Z. Gielniewski
  • DIMMABLE LED LIGHT FIXTURE HAVING ADJUSTABLE COLOR TEMPERATURE
    Publication number: 20130063035
    Abstract: Electronic circuitry for color-mixing in an LED light fixture during AC power dimming is disclosed to achieve adjustable color temperature. According to one embodiment, a dimmable LED light fixture has first, second, and third LED light sources, the first and second LED light sources producing white light, the third LED light source producing colored light, the LED driver configured to power the LED light sources by providing a single-channel variable-DC current source having two output terminals, and a current regulator for maintaining the current in the third LED light source path substantially constant as the LED driver output current is decreased when the AC power is reduced by the dimmer module, thereby altering the color of the light produced by the combination of the LED light sources.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 14, 2013
    Applicant: JUNO MANUFACTURING, LLC
    Inventors: Srinivasa M. Baddela, John G. Serra, Michael Z. Gielniewski
  • Startup flicker suppression in a dimmable LED power supply
    Patent number: 7906917
    Abstract: A method and system of flicker suppression for an LED 26. The method includes providing a power supply 10 for supplying current to the LED 26. The power supply 10 includes a flicker suppressor 50 and is responsive to a dim command signal. The method further includes receiving the dim command signal at the power supply 10, switching the current on and limiting the current to maintain LED light output below 110 percent of the LED light output corresponding to the dim command signal.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: March 15, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Ajay Tripathi, Anand Upadhyay, Ningliang Mi, Rama Venkat, Srinivasa M. Baddela
  • Startup Flicker Suppression in a Dimmable Led Power Supply
    Publication number: 20080136350
    Abstract: A method and system of flicker suppression for an LED 26. The method includes providing a power supply 10 for supplying current to the LED 26. The power supply 10 includes a flicker suppressor 50 and is responsive to a dim command signal. The method further includes receiving the dim command signal at the power supply 10, switching the current on and limiting the current to maintain LED light output below 110 percent of the LED light output corresponding to the dim command signal.
    Type: Application
    Filed: October 26, 2005
    Publication date: June 12, 2008
    Applicant: Koninklijke Philips Electronics, N.V.
    Inventors: Ajay Tripathi, Anand Upadhyay, Ningliang Mi, Rama Venkat, Srinivasa M. Baddela