Patents by Inventor Jacob Choi

Jacob Choi 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: 10859823
    Abstract: A virtual-reality device includes a data generator, one or more processors, two or more gamma bands, and a display. The virtual-reality device generates initial color values for each of the plurality of pixels, and determines a respective gray-level value for each of the pixels according to the generated color values. The device selects, for each of the pixels, a respective gamma band corresponding to the determined respective gray-level value and one or more respective contextual markers, where each gamma band has a distinct luminance target. The virtual-reality device then adjusts the luminance level of each pixel according to the respective selected gamma band and displays the pixels according to the adjusted luminance levels.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: December 8, 2020
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Jacob Choi, Cheonhong Kim
  • Patent number: 10181278
    Abstract: The description relates to display devices. One example can receive a first frame rendering that expresses color content with a defined number of bits that convey a set of color states that correspond to a first range of voltages for driving light emitting diodes (LEDs) of a display. The example can obtain information about degradation of the LEDs of the display. The example can also combine the defined number of bits that express the color content with additional degradation compensation overdrive bits relating to compensating for the degradation of the LEDs of the display. The example can map the combined defined number of bits and the additional degradation compensation overdrive bits to a second range of voltages for driving the display where individual values of the second range exceed the first range.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 15, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Rajesh Dighde, Jacob Choi, Matthew Morris, Ying Zheng
  • Publication number: 20180068606
    Abstract: The description relates to display devices. One example can receive a first frame rendering that expresses color content with a defined number of bits that convey a set of color states that correspond to a first range of voltages for driving light emitting diodes (LEDs) of a display. The example can obtain information about degradation of the LEDs of the display. The example can also combine the defined number of bits that express the color content with additional degradation compensation overdrive bits relating to compensating for the degradation of the LEDs of the display. The example can map the combined defined number of bits and the additional degradation compensation overdrive bits to a second range of voltages for driving the display where individual values of the second range exceed the first range.
    Type: Application
    Filed: November 23, 2016
    Publication date: March 8, 2018
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Rajesh Dighde, Jacob Choi, Matthew Morris, Ying Zheng