Patents by Inventor Lewis Johnson

Lewis Johnson 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).

  • Publication number: 20250304598
    Abstract: Chromophores with large hyperpolarizabilities, films with electro-optic activity comprising the chromophores, and electro-optic devices comprising the chromophores are disclosed.
    Type: Application
    Filed: June 16, 2025
    Publication date: October 2, 2025
    Applicant: University of Washington
    Inventors: Delwin Elder, Lewis Johnson, Bruce Robinson, Huajun Xu
  • Patent number: 12371440
    Abstract: Chromophores with large hyperpolarizabilities, films with electro-optic activity comprising the chromophores, and electro-optic devices comprising the chromophores are disclosed.
    Type: Grant
    Filed: April 21, 2023
    Date of Patent: July 29, 2025
    Assignee: University of Washington
    Inventors: Delwin Elder, Lewis Johnson, Bruce Robinson, Huajun Xu
  • Publication number: 20230339966
    Abstract: Chromophores with large hyperpolarizabilities, films with electro-optic activity comprising the chromophores, and electro-optic devices comprising the chromophores are disclosed.
    Type: Application
    Filed: April 21, 2023
    Publication date: October 26, 2023
    Applicant: University of Washington
    Inventors: Delwin Elder, Lewis Johnson, Bruce Robinson, Huajun Xu
  • Patent number: 11634429
    Abstract: Chromophores with large hyperpolarizabilities, films with electro-optic activity comprising the chromophores, and electro-optic devices comprising the chromophores are disclosed.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: April 25, 2023
    Assignee: University of Washington
    Inventors: Delwin Elder, Lewis Johnson, Bruce Robinson, Huajun Xu
  • Publication number: 20220227783
    Abstract: Chromophores with large hyperpolarizabilities, films with electro-optic activity comprising the chromophores, and electro-optic devices comprising the chromophores are disclosed.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 21, 2022
    Inventors: Delwin Elder, Lewis Johnson, Bruce Robinson, Huajun Xu
  • Patent number: 9633587
    Abstract: Embodiments of the invention relate generally to generating images with an enhanced range of brightness levels, and more particularly, to facilitating high dynamic range imaging by adjusting pixel data and/or using predicted values of luminance, for example, at different resolutions. In at least one embodiment, a method generates an image with an enhanced range of brightness levels. The method can include accessing a model of backlight that includes data representing values of luminance for a number of first samples. The method also can include inverting the values of luminance, as well as upsampling inverted values of luminance to determine upsampled values of luminance. Further, the method can include scaling pixel data for a number of second samples by the upsampled values of luminance to control a modulator to generate an image.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: April 25, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Lewis Johnson
  • Patent number: 9514508
    Abstract: An emulator yields modified image data that predicts the appearance of image content on a target display. The emulator generates modified image data based in part on the image content. The emulator may perform a transformation in which one or more parameters representative of features such as black level and/or white level of the target display are functions of image statistics for the image content.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: December 6, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Anders Ballestad, Robin Atkins, Lewis Johnson
  • Patent number: 9390660
    Abstract: Displays such as televisions, computer monitors, and the like may boost (124) the dynamic range of input image data (121). Dithering (128) may be provided to mitigate artefacts made visible as a result of the boosting. Color correction (124) may be implemented. The color correction may compensate for differences between a color of a backlight and a desired white point.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: July 12, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Lewis Johnson, Peter Longhurst
  • Patent number: 9299293
    Abstract: Methods and apparatus are provided for backlighting a dual modulation display device. Each type of light source comprises a multi-primary light source having two or more primary color light emitters having different primary color characteristics from corresponding primary color emitters of other types of light source. Methods may comprise receiving illumination target values for a plurality of locations on the front modulator corresponding to the plurality of light sources, each of the locations on the front modulator configured to be illuminated by two or more of the plurality of light sources, determining primary color drive values source based on the primary color characteristics for that primary color and the illumination target value for the location corresponding to that light source, and driving the primary color light emitters or each type of light source based on the primary color drive values.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 29, 2016
    Assignee: Dobly Laboratories Licensing Corporation
    Inventors: Chun Chi Thomas Wan, Giorgio Giaretta, Lewis Johnson, Ka Wing Terence Lau, Christopher Orlick, Neil Messmer
  • Patent number: 9275605
    Abstract: Image data is encoded for distribution in a lower bit-depth format. The image data has a range that is less than a maximum range and is mapped to the lower bit depth format using a mapping such that a ratio of a range of the lower bit depth representation to a maximum range of the lower bit depth representation is greater than a ratio of the range of the image data to a maximum range of the image data. Metadata characterizing the mapping is associated with lower bit depth representation. The metadata may be used downstream to reverse the mapping so that tonal detail is better reproduced.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: March 1, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. Longhurst, Lewis Johnson, Neil W. Messmer
  • Patent number: 9226048
    Abstract: Systems, apparatus and methods are provided for generating, delivering, processing and displaying video data to preserve the video creator's creative intent. Metadata which may be used to guide the processing and display of the video data is dynamically generated and embedded in the video data throughout a video delivery pipeline. The metadata may be written in chrominance data for black video frames, black mattes or bars framing an image, and/or in the other image areas for which luminance values are zero or below a threshold value.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: December 29, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Neil W. Messmer, Lewis Johnson
  • Patent number: 9190014
    Abstract: Methods for transmitting additional information together with image data involve replacing pixel values to take in-gamut points to out-of-gamut points. The additional information may constitute metadata describing the image data and/or useful for controlling display and/or processing of the image data; watermark information; or other information. In some embodiments the image data is restored to its original form after extraction of the additional information.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: November 17, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Neil W. Messmer, Lewis Johnson
  • Patent number: 9076391
    Abstract: Embodiments of the invention relate generally to computer-based image processing, and more particularly, to systems, computer-readable mediums, methods, and apparatuses to operate a rear modulator in a high dynamic range display to, among other things, characterize input images into pixel characteristics which may be data-reduced representations of a group of pixels corresponding to the input image, and to relate a modulation value intensity image to a weighted combination of the pixel characteristics. The modulation value intensity image may be used to derive a rear modulator drive signal, which, turn, may be configured to control one or more modulating elements to generate a low resolution image of the input image at the rear modulator.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: July 7, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Lewis Johnson, Jon Scott Miller, Christopher Orlick, Jerome Shields
  • Publication number: 20150049132
    Abstract: Embodiments of the invention relate generally to generating images with an enhanced range of brightness levels, and more particularly, to facilitating high dynamic range imaging by adjusting pixel data and/or using predicted values of luminance, for example, at different resolutions. In at least one embodiment, a method generates an image with an enhanced range of brightness levels. The method can include accessing a model of backlight that includes data representing values of luminance for a number of first samples. The method also can include inverting the values of luminance, as well as upsampling inverted values of luminance to determine upsampled values of luminance. Further, the method can include scaling pixel data for a number of second samples by the upsampled values of luminance to control a modulator to generate an image.
    Type: Application
    Filed: November 3, 2014
    Publication date: February 19, 2015
    Applicant: Dolby Laboratories Licensing Corporation
    Inventor: Lewis Johnson
  • Patent number: 8890902
    Abstract: Embodiments of the invention relate generally to generating images with an enhanced range of brightness levels, and more particularly, to facilitating high dynamic range imaging by adjusting pixel data and/or using predicted values of luminance, for example, at different resolutions. In at least one embodiment, a method generates an image with an enhanced range of brightness levels. The method can include accessing a model of backlight that includes data representing values of luminance for a number of first samples. The method also can include inverting the values of luminance, as well as upsampling inverted values of luminance to determine upsampled values of luminance. Further, the method can include scaling pixel data for a number of second samples by the upsampled values of luminance to control a modulator to generate an image.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: November 18, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Lewis Johnson
  • Publication number: 20140333660
    Abstract: An emulator yields modified image data that predicts the appearance of image content on a target display. The emulator generates modified image data based in part on the image content. The emulator may perform a transformation in which one or more parameters representative of features such as black level and/or white level of the target display are functions of image statistics for the image content.
    Type: Application
    Filed: December 6, 2012
    Publication date: November 13, 2014
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Anders Ballestad, Robin Atkins, Lewis Johnson
  • Publication number: 20140253609
    Abstract: Methods and apparatus are provided for backlighting a dual modulation display device. Each type of light source comprises a multi-primary light source having two or more primary color light emitters having different primary color characteristics from corresponding primary color emitters of other types of light source. Methods may comprise receiving illumination target values for a plurality of locations on the front modulator corresponding to the plurality of light sources, each of the locations on the front modulator configured to be illuminated by two or more of the plurality of light sources, determining primary color drive values source based on the primary color characteristics for that primary color and the illumination target value for the location corresponding to that light source, and driving the primary color light emitters or each type of light source based on the primary color drive values.
    Type: Application
    Filed: October 12, 2012
    Publication date: September 11, 2014
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Chun Chi Thomas Wan, Giorgio Giaretta, Lewis Johnson, Ka Wing Terence Lau, Christopher Orlick, Neil Messmer
  • Publication number: 20140249979
    Abstract: Handling is expedited for electronic financial service messages, particularly those destined for an exchange 60 or other trading venue. Messages are parsed into two informational components, with the first component requiring computations that must happen extremely fast and the second component requiring state updates, for example, that can happen on a longer timeframe. Real-time balancing of optimizing throughput versus optimizing latency is achieved for financial message handling. The system allows for the automatic switching between the two methods of optimization based on either user controlled or independently controlled message rate thresholds.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 4, 2014
    Applicant: SECODIX CORPORATION
    Inventors: Damir Wallener, Lewis Johnson, Brendan Tonner, Ken Unger
  • Patent number: 8681189
    Abstract: Systems and methods of image processing are provided for a display having a light source modulation layer and a display modulation layer. A section of a perceptual curve, such as a DICOM curve, is extracted for each frame of image data, based on a profile of expected luminance on the display modulation layer from light emitted by the light source modulation layer. The section of the perceptual curve may be used to determine a desired-total response curve which maps display modulation layer input control values to corresponding output luminance values. The desired-total response curve and a display modulator-specific response curve may be applied to image data to generate control values for driving the display modulation layer.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: March 25, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Damir Wallener, Lewis Johnson
  • Publication number: 20130235072
    Abstract: Image data is encoded for distribution in a lower bit-depth format. The image data has a range that is less than a maximum range and is mapped to the lower bit depth format using a mapping such that a ratio of a range of the lower bit depth representation to a maximum range of the lower bit depth representation is greater than a ratio of the range of the image data is associated with lower bit depth representation. The metadata may be used downstream to reverse the mapping so that tonal detail is better reproduced.
    Type: Application
    Filed: November 17, 2011
    Publication date: September 12, 2013
    Inventors: Peter W. Longhurst, Lewis Johnson, Neil W. Messmer