Patents by Inventor Walter Marvin Duncan

Walter Marvin Duncan 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).

  • Color splitting method for light sources
    Patent number: 8235532
    Abstract: A system comprises two or more light sources comprising a first light source and a second light source, each light source of the two or more light sources configured to provide light of a particular wavelength, wherein a first wavelength of a first light provided by the first light source differs from a second wavelength of a second light provided by the second light source, and wherein the first light has a first radiant energy that experiences roll-off. The system further comprises a controller configured to modulate an attribute of each light source to compensate for the roll-off, the modulation comprising modulating an attribute of the first light source, and the modulation further comprising modulating an attribute of the second light source, the modulation of the second attribute being different from the modulation of the first attribute.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: August 7, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Walter Marvin Duncan, Benjamin Lowell Lee
  • Color Splitting Method For Light Sources
    Publication number: 20100277697
    Abstract: A system comprises two or more light sources comprising a first light source and a second light source, each light source of the two or more light sources configured to provide light of a particular wavelength, wherein a first wavelength of a first light provided by the first light source differs from a second wavelength of a second light provided by the second light source, and wherein the first light has a first radiant energy that experiences roll-off. The system further comprises a controller configured to modulate an attribute of each light source to compensate for the roll-off, the modulation comprising modulating an attribute of the first light source, and the modulation further comprising modulating an attribute of the second light source, the modulation of the second attribute being different from the modulation of the first attribute.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Applicant: Texas Instruments Incorporated
    Inventors: Walter Marvin Duncan, Benjamin Lowell Lee