Patents by Inventor David Andrew Doyle

David Andrew Doyle 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: 9940879
    Abstract: The present disclosure generally relates to systems and techniques for calibrating displays to improve the white point uniformity between similar type devices. In one embodiment, a backlight includes multiple strings of LEDs, where each string is driven by a separate driver, or driver channel. Each string may be separately tested at a base current to determine its emitted chromaticity, and values indicative of the emitted chromaticities may be stored within the backlight as calibration values. The calibration values may then be used to determine the driving strength for each string that allows the display to produce the target white point when the light from the strings is mixed. Further, in certain embodiments, adjustments also may be made to the LCD panel based on the emitted chromaticities at the base current.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: April 10, 2018
    Assignee: APPLE INC.
    Inventors: Shawn Robert Gettemy, Joshua Grey Wurzel, Jean-Pierre Simon Guillou, Ming Xu, David Andrew Doyle
  • Patent number: 8907935
    Abstract: A system and method for characterizing the power and luminance values for a display. This may include testing a device to determine a luminance value for a display of a given device at a given current and determining whether the first current is to be adjusted during future uses based on a comparison of the luminance with at least one threshold value. This may also include storing an adjusted current value if it is determined that the first current is to be adjusted.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 9, 2014
    Assignee: Apple Inc.
    Inventors: Taif Ahmed Syed, Daniel A. Villamizar, David Andrew Doyle, Ulrich T. Barnhoefer, Venu Madhav Duggineni
  • Publication number: 20130328841
    Abstract: A system and method for characterizing the power and luminance values for a display. This may include testing a device to determine a luminance value for a display of a given device at a given current and determining whether the first current is to be adjusted during future uses based on a comparison of the luminance with at least one threshold value. This may also include storing an adjusted current value if it is determined that the first current is to be adjusted.
    Type: Application
    Filed: September 14, 2012
    Publication date: December 12, 2013
    Applicant: APPLE INC.
    Inventors: Taif Ahmed Syed, Daniel A. Villamizar, David Andrew Doyle, Ulrich T. Barnhoefer, Venu Madhav Duggineni
  • Publication number: 20130328944
    Abstract: A system and method calibrating operational characteristics of a device. Commands for operation of the device may be derived from a set of operational characteristics common to a set of devices similar to the device. This set of operational characteristics may further be adjusted by operational characteristics related to the device itself. This may allow for more adaptive control signals to be generated for control of portions of the device.
    Type: Application
    Filed: September 14, 2012
    Publication date: December 12, 2013
    Applicant: APPLE INC.
    Inventors: Ulrich T. Barnhoefer, Daniel A. Villamizar, Taif Ahmed Syed, David Andrew Doyle, Venu Madhav Duggineni
  • Publication number: 20130088522
    Abstract: The present disclosure generally relates to systems and techniques for calibrating displays to improve the white point uniformity between similar type devices. In one embodiment, a backlight includes multiple strings of LEDs, where each string is driven by a separate driver, or driver channel. Each string may be separately tested at a base current to determine its emitted chromaticity, and values indicative of the emitted chromaticities may be stored within the backlight as calibration values. The calibration values may then be used to determine the driving strength for each string that allows the display to produce the target white point when the light from the strings is mixed. Further, in certain embodiments, adjustments also may be made to the LCD panel based on the emitted chromaticities at the base current.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 11, 2013
    Applicant: APPLE INC.
    Inventors: Shawn Robert Gettemy, Joshua Grey Wurzel, Jean-Pierre Simon Guillou, Ming Xu, David Andrew Doyle