Patents by Inventor Yingying Tang

Yingying Tang 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: 20240078961
    Abstract: Systems and methods are described herein to control brightness based on image content or other inputs to a display system. A dual-control system may integrate both slow control operations and fast control operations into a cohesive brightness management system. By using both shorter-term (e.g., fast control) and longer-term (e.g., slow control) brightness adjustment operations, the electronic device may quickly respond to high luminance and high brightness situations that may cause burn-in into the display, image artifacts, or other damage. Responding quickly to these high consumption situations may prevent damage or perceivable upset to an ongoing process, among other benefits.
    Type: Application
    Filed: December 6, 2022
    Publication date: March 7, 2024
    Inventors: Wanqing Xin, Yang Xu, Mohammad Ali Jangda, Jenny Hu, Koorosh Aflatooni, Giovanni Corradini, Martin Kocicka, Alexey Kornienko, Asha G Karvaje, Aishwarya Prem Renu, Andrew D Pangborn, Chaohao Wang, Yingying Tang, Arthur L Spence, Mahesh B Chappalli
  • Publication number: 20240071295
    Abstract: Devices and methods are provided to overdrive or underdrive a display panel to account for display pixel hysteresis due to several frames of pixel history. An electronic device may include an electronic display and processing circuitry. The electronic display includes a number of display pixels. The processing circuitry may generate image data for the display pixels. The processing circuitry may receive a current frame value of the image data targeted for a first display pixel and, based at least in part on the current frame value and a pixel history of the first display pixel—may indicate a gray level for a number of previous frames—generate a compensated value by which to drive the first pixel to overcome pixel hysteresis to reach the desired luminance at an initial response.
    Type: Application
    Filed: July 24, 2023
    Publication date: February 29, 2024
    Inventors: Jenny Hu, Alexandre V Gauthier, Tao Jia, Scott R Johnston, Yingying Tang, Chaohao Wang
  • Publication number: 20240038158
    Abstract: An electronic device may include a display and an optical sensor formed underneath the display. The electronic device may include a plurality of transparent windows that overlap the optical sensor. The resolution of the display panel may be reduced in some areas due to the presence of the transparent windows. To prevent a visible border between the reduced resolution areas of the display and full resolution areas of the display, uniformity compensation circuitry may be used to compensate pixel data. The uniformity compensation circuitry may output compensated pixel data for the display using one or more compensation maps that include compensation factors associated with pixel locations. The uniformity compensation circuitry may also use region-specific gamma look-up tables to apply different gamma curves to pixels in different regions of the display. The uniformity compensation circuitry may also be used to form a transition region between different regions of the display.
    Type: Application
    Filed: October 4, 2023
    Publication date: February 1, 2024
    Inventors: Lingtao Wang, Yingying Tang, Scott R. Johnston, Chaohao Wang, Sheng Zhang, Woo Shik Jung
  • Publication number: 20230410718
    Abstract: A light emitter that operates through a display may cause display artifacts, even when the light emitter operates using non-visible wavelengths. Display artifacts caused by a light emitter that operates through a display may be referred to as emitter artifacts. To mitigate emitter artifacts, operating conditions for a display frame may be used to determine an optimal firing time for the light emitter during that display frame. The operating conditions used to determine the optimal firing time may include emitter operating conditions, display content statistics, display brightness, temperature, and refresh rate. Operating conditions from one or more previous frames may be stored in a frame buffer and may be used to help determine the optimal firing time for the light emitter during a display frame. Pixel values for the display may be modified to mitigate emitter artifacts.
    Type: Application
    Filed: March 15, 2023
    Publication date: December 21, 2023
    Inventors: Jenny Hu, Chaohao Wang, Christopher E Glazowski, Clint M Perlaki, David R Manly, Feng Wen, Graeme M Williams, Hei Kam, Hyun H Boo, Kevin J Choboter, Kyounghwan Kim, Lu Yan, Mahesh B Chappalli, Mark T Winkler, Na Zhu, Peter F Holland, Tong Chen, Warren S Rieutort-Louis, Wenrui Cai, Ximeng Guan, Yingying Tang, Yuchi Che
  • Patent number: 11823620
    Abstract: An electronic device may include a display and an optical sensor formed underneath the display. The electronic device may include a plurality of transparent windows that overlap the optical sensor. The resolution of the display panel may be reduced in some areas due to the presence of the transparent windows. To prevent a visible border between the reduced resolution areas of the display and full resolution areas of the display, uniformity compensation circuitry may be used to compensate pixel data. The uniformity compensation circuitry may output compensated pixel data for the display using one or more compensation maps that include compensation factors associated with pixel locations. The uniformity compensation circuitry may also use region-specific gamma look-up tables to apply different gamma curves to pixels in different regions of the display. The uniformity compensation circuitry may also be used to form a transition region between different regions of the display.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: November 21, 2023
    Assignee: Apple Inc.
    Inventors: Lingtao Wang, Yingying Tang, Scott R. Johnston, Chaohao Wang, Sheng Zhang, Woo Shik Jung
  • Patent number: 11810534
    Abstract: An electronic device may have a display layer for displaying images. An optical coupling layer having an input surface that receives light from the display panel may convey the light from the input surface to an output surface. The output surface may have different dimensions than the display layer and may have any desired shape. To account for the displacement of light between the active area and the outer surface of the optical coupling layer and to ensure the output image is perceived with the desired distortion, image data may be rendered for the output surface then modified to account for the distortion and displacement that will occur later when the image is transported by the optical coupling layer from the display active area to the output surface of the optical coupling layer. Image distortion control circuitry may modify the rendered image data based on a distortion map.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: November 7, 2023
    Assignee: Apple Inc.
    Inventors: Yi Qiao, Jean-Pierre S. Guillou, Yingying Tang, Michael J. Brown, Paul C. Kelley, Tyler R. Kakuda, Hao Dong, Ying-Chih Wang, Chaohao Wang, Shaorui Yang, Wei H. Yao
  • Publication number: 20230077843
    Abstract: An electronic device may include a display. Control circuitry may operate the display at different frame rates such as 60 Hz, 80 Hz, and 120 Hz. The control circuitry may determine which frame rate to use based on a speed of animation on the display and based on a type of animation on the display. To mitigate the appearance of judder as the display frame rate changes, the control circuitry may implement techniques such as hysteresis (e.g., windows of tolerance around speed thresholds to ensure that the display frame rate does not change too frequently as a result of noise), speed thresholds that are based on a user perception study, consistent latency between touch input detection and corresponding display output across different frame rates (e.g., using a fixed touch scan rate that is independent of frame duration), and animation-specific speed thresholds for triggering frame rate changes.
    Type: Application
    Filed: August 12, 2022
    Publication date: March 16, 2023
    Inventors: Wanqing Xin, Mehmet N Agaoglu, Gokhan Avkarogullari, Jenny Hu, Alexander K Kan, Yuhui Li, James R Montgomerie, Andrey Pokrovskiy, Yingying Tang, Chaohao Wang
  • Patent number: 11355049
    Abstract: An electronic device may include an electronic display having multiple pixels to display an image based on processed image data. Each of the pixels may include multiple sub-pixels. The electronic device may also include image processing circuitry to receive first image data for a sub-pixel of the and second image data for a group of sub-pixels surrounding the sub-pixel. The first image data may include a luminance value for the sub-pixel and the second image data may include luminance values for each sub-pixel of the group. The image processing circuitry may also determine a compensation value, to compensate the luminance value for lateral current leakage between the sub-pixel and the group of sub-pixels, based on the luminance value of the sub-pixel and the luminance values for each sub-pixel of the group of sub-pixels.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: June 7, 2022
    Assignee: Apple, Inc.
    Inventors: Chaohao Wang, Sheng Zhang, Yingying Tang, Yunhui Hou
  • Patent number: 11348554
    Abstract: An electronic device may have a display. A protective display cover layer for the display may tend to dim pixels near the edge of the display. Control circuitry in the electronic device may boost luminance for pixels in an edge region of a displayed image relative to a center region of the image. This ensures that image brightness does not vary across the image. The control circuitry may include a graphics processing unit, a pixel pipeline implemented in a system-on-chip circuit block, and a display drive circuit block. Luminance compensation may be implemented in the system-on-chip block and/or in the display driver circuit block.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: May 31, 2022
    Assignee: Apple Inc.
    Inventors: Yingying Tang, Chaohao Wang, Wei H. Yao
  • Patent number: 11295703
    Abstract: An electronic device may be provided with an ambient light sensor, a display that displays image content, and control circuitry. The control circuitry may adjust a peak allowable brightness of the display based on an ambient light brightness and based on the image content being displayed. For example, the control circuitry may analyze frames of display data to determine an average pixel luminance level. Low average pixel luminance levels correspond to mostly dark image content, whereas high average pixel luminance levels correspond to mostly light image content. When an electronic device is outdoors and displaying mostly dark images with low average pixel luminance levels, the control circuitry may take advantage of the display's maximum achievable brightness to improve readability. When an electronic device is outdoors and displaying mostly light images with high average pixel luminance levels, the control circuitry may scale the maximum allowable brightness down to reduce power consumption.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: April 5, 2022
    Assignee: Apple Inc.
    Inventors: Yang Li, Yingying Tang, Chaohao Wang, Wei H. Yao
  • Patent number: 11217211
    Abstract: Techniques for implementing and/or operating an electronic device that includes a display panel, which displays an image and includes a first panel section implemented with a lower pixel resolution and a second panel section implemented with a higher pixel resolution, an optical sensor disposed behind the first panel section of the display panel, and image processing circuitry communicatively coupled to the display panel. The image processing circuitry receives source image data corresponding with the image, in which the source image data is indicative of target luminance of a display pixel, determines a pixel resolution surrounding the display pixel, processes the source image based at least in part on the pixel resolution surrounding the display pixel to facilitate determining display image data corresponding with the display pixel, and outputs the display image data to enable the display panel to display the image based on the display image data.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: January 4, 2022
    Assignee: Apple Inc.
    Inventors: Yingying Tang, Chaohao Wang, Wei H. Yao, Christopher E. Glazowski, Woo Shik Jung, Scott R. Johnston
  • Patent number: 11170690
    Abstract: An electronic device may include an electronic display having multiple pixels to display an image based on processed image data. Each of the pixels may include multiple sub-pixels. The electronic device may also include image processing circuitry to receive input image data, in a first color space, having luminance values for each of the sub-pixels. The circuitry may also map the input image data from the first color space to a second color space and apply a multi-dimensional lookup table, based on the input image data in the second color space, to generate compensated image data. The lookup table may receive the luminance values for each of the sub-pixels and output corrected luminance values compensated for an expected amount of current leakage between the sub-pixels. The circuitry may also inversely map the compensated image data from the second color space to the first color space to generate the processed image data.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: November 9, 2021
    Assignee: Apple Inc.
    Inventors: Adria Fores Herranz, Chaohao Wang, Jun Li, Koorosh Aflatooni, Pierre-Yves Emelie, Sheng Zhang, Yingying Tang, Yunhui Hou
  • Patent number: 10971086
    Abstract: Aspects of the subject technology relate to pulsed backlight operation for a display backlight. Backlight pulse patterns are provided that include steady state pulse patterns to be applied during operation of a liquid crystal display unit of the display at a corresponding frame rate. The backlight pulse patterns can be arranged to prevent visible artifacts such as flicker or strobing, particularly at or near a transition between LCD frame rates. In some scenarios, transition pulse patterns are provided.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: April 6, 2021
    Assignee: Apple Inc.
    Inventors: Chengrui Le, Chaohao Wang, Li Tao, Lingyu Hong, Paolo Sacchetto, Sheng Zhang, Xiaokai Li, Yingying Tang, Yunhui Hou, Johan L. Piper
  • Publication number: 20210097921
    Abstract: An electronic device may include an electronic display having multiple pixels to display an image based on processed image data. Each of the pixels may include multiple sub-pixels. The electronic device may also include image processing circuitry to receive first image data for a sub-pixel of the and second image data for a group of sub-pixels surrounding the sub-pixel. The first image data may include a luminance value for the sub-pixel and the second image data may include luminance values for each sub-pixel of the group. The image processing circuitry may also determine a compensation value, to compensate the luminance value for lateral current leakage between the sub-pixel and the group of sub-pixels, based on the luminance value of the sub-pixel and the luminance values for each sub-pixel of the group of sub-pixels.
    Type: Application
    Filed: August 26, 2020
    Publication date: April 1, 2021
    Inventors: Chaohao Wang, Sheng Zhang, Yingying Tang, Yunhui Hou
  • Publication number: 20210097958
    Abstract: An electronic device may include an electronic display having multiple pixels to display an image based on processed image data. Each of the pixels may include multiple sub-pixels. The electronic device may also include image processing circuitry to receive input image data, in a first color space, having luminance values for each of the sub-pixels. The circuitry may also map the input image data from the first color space to a second color space and apply a multi-dimensional lookup table, based on the input image data in the second color space, to generate compensated image data. The lookup table may receive the luminance values for each of the sub-pixels and output corrected luminance values compensated for an expected amount of current leakage between the sub-pixels. The circuitry may also inversely map the compensated image data from the second color space to the first color space to generate the processed image data.
    Type: Application
    Filed: August 26, 2020
    Publication date: April 1, 2021
    Inventors: Adria Fores Herranz, Chaohao Wang, Jun Li, Koorosh Aflarooni, Pierre-Yves Emellie, Sheng Zhang, Yingying Tang, Yunhui Hou
  • Publication number: 20210027751
    Abstract: Techniques for implementing and/or operating an electronic device that includes a display panel, which displays an image and includes a first panel section implemented with a lower pixel resolution and a second panel section implemented with a higher pixel resolution, an optical sensor disposed behind the first panel section of the display panel, and image processing circuitry communicatively coupled to the display panel. The image processing circuitry receives source image data corresponding with the image, in which the source image data is indicative of target luminance of a display pixel, determines a pixel resolution surrounding the display pixel, processes the source image based at least in part on the pixel resolution surrounding the display pixel to facilitate determining display image data corresponding with the display pixel, and outputs the display image data to enable the display panel to display the image based on the display image data.
    Type: Application
    Filed: July 14, 2020
    Publication date: January 28, 2021
    Inventors: Yingying Tang, Chaohao Wang, Wei H. Yao, Christopher E. Glazowski, Woo Shik Jung, Scott R. Johnston
  • Publication number: 20210020140
    Abstract: An electronic device may be provided with an ambient light sensor, a display that displays image content, and control circuitry. The control circuitry may adjust a peak allowable brightness of the display based on an ambient light brightness and based on the image content being displayed. For example, the control circuitry may analyze frames of display data to determine an average pixel luminance level. Low average pixel luminance levels correspond to mostly dark image content, whereas high average pixel luminance levels correspond to mostly light image content. When an electronic device is outdoors and displaying mostly dark images with low average pixel luminance levels, the control circuitry may take advantage of the display's maximum achievable brightness to improve readability. When an electronic device is outdoors and displaying mostly light images with high average pixel luminance levels, the control circuitry may scale the maximum allowable brightness down to reduce power consumption.
    Type: Application
    Filed: July 10, 2020
    Publication date: January 21, 2021
    Inventors: Yang Li, Yingying Tang, Chaohao Wang, Wei H. Yao
  • Publication number: 20200388213
    Abstract: A flat-panel display device and method to unify response times for all possible grey level transitions in a flat-panel display or an augmented reality display. A pixel drive compensator receives a frame from a graphics processing unit and two-dimensional temperature for pixels at a display panel to compensate for temperature variation across the display panel.
    Type: Application
    Filed: April 17, 2020
    Publication date: December 10, 2020
    Inventors: Aaron L. Holsteen, Xiaokai Li, Shawn Hurley, Adria Fores Herranz, Yingying Tang, Jenny Hu, Koorosh Aflatooni, Chaohao Wang
  • Patent number: 10839738
    Abstract: An electronic device that includes processing circuitry configured to generate a frame of image data that has a frame duration is provided. The electronic device includes a display that has a plurality of pixels. Each of the plurality of pixels displays image data from the frame of image data for a pixel emission period that is less than the frame duration. A first pixel of a column of pixels of the plurality of pixels begins displaying the image data from the frame of image data at a first time for a first duration. A second pixel of the column of pixels that is adjacent to the first pixel begins displaying the image data from the frame of image data at a second time for a second duration. The first and second durations are equal to the pixel emission period. The second time begins after the first duration of time.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: November 17, 2020
    Assignee: Apple Inc.
    Inventors: Hung Sheng Lin, Paolo Sacchetto, Yingying Tang, Hyunwoo Nho, Sebastian Knitter, Chaohao Wang, Sheng Zhang
  • Patent number: 10784686
    Abstract: Apparatus and methods are disclosed for control systems for improving stability of electrical grids by temporarily reducing voltage output of electrical generators responsive to transient events on an electrical grid. In one example of the disclosed technology, a controller is coupled is to an automatic voltage regulator, which in turn adjusts excitation current of an electrical generator responsive to changes in frequency detected for the electrical grid. Reducing the output voltage temporarily allows for smaller generators to provide power to the microgrid. Methods for selecting parameters determining how the controller generates a regulation signal used to adjust the excitation current are further disclosed.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: September 22, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Kevin P. Schneider, Francis K. Tuffner, Jacob Hansen, Yingying Tang, Nikitha Radhakrishnan, Priya Thekkumparambath Mana