Patents by Inventor Hari P. Paudel
Hari P. Paudel 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).
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Patent number: 11972713Abstract: An electronic device may display image content via an electronic display by controlling light emission from display pixels of the electronic display. A processor of the electronic device may receive image data destined for a defective display pixel (e.g., dim pixel, dead pixel). The processor may convert a gray level of the image data into a luminance domain to generate a target luminance that would have been emitted by the defective display pixel had the display pixel not been defective. After selecting a compensation mask, the processor may distribute the target luminance of the defective display pixels to nearby non-defective pixels of the electronic display to conceal the presence of the defective display pixel.Type: GrantFiled: April 6, 2022Date of Patent: April 30, 2024Assignee: Apple Inc.Inventors: Hari P. Paudel, Chaohao Wang, Hopil Bae, Mahdi Farrokh Baroughi, Wei Chen, Wei H. Yao
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Publication number: 20240105115Abstract: Electronic devices, displays, and methods are provided for operating an electronic display in coexistence with sensors that could be adversely impacted by the operation of the electronic display. An electronic device may include an electronic display and a sensor. The electronic display may display image content by light emission during an emission period and periodically enter a quiet period in which the light emission of the electronic display is turned off. The sensor may perform sensing operations during the quiet period without interference from the operation of the electronic display.Type: ApplicationFiled: September 15, 2023Publication date: March 28, 2024Inventors: Mahdi Farrokh Baroughi, Ce Zhang, Haitao Li, Hari P. Paudel, Hopil Bae, Jeongsup Lee, Nikhil Acharya, Pablo Moreno Galbis, Seung B. Rim, SeyedAli TaheriTari, Shengzhe Jiao, Stanley B. Wang, Sunmin Jang, Xiang Lu, Yaser Azizi, Young Don Bae
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Publication number: 20240054945Abstract: An electronic display may include a first anode configured to carry a red emission signal, a second anode configured to carry a blue emission signal, a third anode configured to carry a green emission signal, and a micro-driver configured to stagger a timing of the red emission signal, the blue emission signal, and the green emission signal based on an emission clock signal to display image content on the electronic display.Type: ApplicationFiled: August 4, 2023Publication date: February 15, 2024Inventors: Mahdi Farrokh Baroughi, Young Don Bae, Jeongsup Lee, Hari P. Paudel, Sunmin Jang, Shengzhe Jiao, Nikhil Acharya, Yaser Azizi, Ali RostamPisheh, Stanley B. Wang, Haitao Li
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Publication number: 20240005848Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. As image data is written to a pixel in the row of pixels, capacitive coupling at a driver may lead to distortion on the driver. In particular, the capacitive coupling may cause distortion at a storage capacitor, which may lead to current droop at the pixel. The current droop may be reduced or eliminated in each pixel by performing pixel compensation. The pattern of the pixel compensation may be selected such that, over a number of subframes, an average amount of light is the same or similar to what would be emitted had pixel compensation been performed on each pixel in each subframe.Type: ApplicationFiled: June 14, 2023Publication date: January 4, 2024Inventors: Jeongsup Lee, Hasan Akyol, Xiang Lu, Mahdi Farrokh Baroughi, Nikhil Acharya, Haitao Li, Hopil Bae, John T Wetherell, Shengzhe Jiao, Stanley B. Wang, Sunmin Jang, Hari P. Paudel, Eric A. Hildebrandt, Young Don Bae
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Publication number: 20230368718Abstract: To reduce image artifacts and non-uniformity associated with a display pixel of an electronic display, processing circuity may adjust a luminance value corresponding to a display pixel according to a per-pixel gain mask, a per-pixel anode mask, or both. To further correct for the non-uniformity, the processing circuitry may convert the luminance value to a digital code based on a curve associated with an anode on which the display pixel is located.Type: ApplicationFiled: April 6, 2023Publication date: November 16, 2023Inventors: Sunmin Jang, Mahdi Farrokh Baroughi, Saif Choudhary, Hopil Bae, Gautam Agrawal, Ionut A Mirel, Hari P Paudel, Haitao Li, Wei H Yao, Mahesh B Chappalli
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Patent number: 11688364Abstract: An electronic device may display image content via a tile-based display by controlling light emission from display pixels of the tile-based display. Based on image data associated with the image content, a processing circuitry of the tile-based display may receive a potential tile boundary. The processing circuitry may resample the image data based on geometry of the tile boundary and positions of the display pixels on the tile-based panel. After resampling the image data, the processing circuitry may adjust gain of the tile boundary display pixels according to a gain mask to compensate for the tile boundary.Type: GrantFiled: April 6, 2022Date of Patent: June 27, 2023Assignee: Apple Inc.Inventors: Hari P Paudel, Chaohao Wang, Hopil Bae, Mahdi Farrokh Baroughi, Wei Chen, Wei H Yao, Seung B Rim, Sunmin Jang
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Publication number: 20230087088Abstract: A display may be formed by an array of light-emitting diodes mounted to the surface of a display substrate. The light-emitting diodes may be inorganic light-emitting diodes formed from separate crystalline semiconductor structures. An array of pixel control circuits may be used to control light emission from the light-emitting diodes. Each pixel control circuit may be configured to control one or more respective passive matrices. To control partial pixel cells in the display, a donor pixel control circuit in a partial pixel cell may control the pixels in a receptor partial pixel cell without a pixel control circuit. To mitigate the size of an inactive area of the display, fanout signal lines for the display may be formed in the light-emitting active area of the display. The fanout signal lines may be formed between a row of pixel control circuits and a bottom edge of the light-emitting active area.Type: ApplicationFiled: August 24, 2022Publication date: March 23, 2023Inventors: Mahdi Farrokh Baroughi, Sandeep Chalasani, Xiang Lu, Anurag Mehta, Hopil Bae, Chaohao Wang, Rajesh Velayuthan, Steven E. Molesa, Yaser Azizi, Young Don Bae, Sunmin Jang, Haitao Li, Hari P. Paudel, Anatole Huang, Tyler R. Kakuda, David A. Doyle, Wei H. Yao, Majid Gharghi, Vaibhav D. Patel
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Publication number: 20220375427Abstract: An electronic device may display image content via a tile-based display by controlling light emission from display pixels of the tile-based display. Based on image data associated with the image content, a processing circuitry of the tile-based display may receive a potential tile boundary. The processing circuitry may resample the image data based on geometry of the tile boundary and positions of the display pixels on the tile-based panel. After resampling the image data, the processing circuitry may adjust gain of the tile boundary display pixels according to a gain mask to compensate for the tile boundary.Type: ApplicationFiled: April 6, 2022Publication date: November 24, 2022Inventors: Hari P Paudel, Chaohao Wang, Hopil Bae, Mahdi Farrokh Baroughi, Wei Chen, Wei H Yao, Seung B Rim, Sunmin Jang
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Publication number: 20220358867Abstract: An electronic device may display image content via an electronic display by controlling light emission from display pixels of the electronic display. A processor of the electronic device may receive image data destined for a defective display pixel (e.g., dim pixel, dead pixel). The processor may convert a gray level of the image data into a luminance domain to generate a target luminance that would have been emitted by the defective display pixel had the display pixel not been defective. After selecting a compensation mask, the processor may distribute the target luminance of the defective display pixels to nearby non-defective pixels of the electronic display to conceal the presence of the defective display pixel.Type: ApplicationFiled: April 6, 2022Publication date: November 10, 2022Inventors: Hari P. Paudel, Chaohao Wang, Hopil Bae, Mahdi Farrokh Baroughi, Wei Chen, Wei H. Yao
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Patent number: 10018817Abstract: Embodiments of the invention provide an imaging system and method using adaptive optics and optimization algorithms for imaging through highly scattering media in oil reservoir applications and lab-based petroleum research. Two-/multi-photon fluorescence microscopy is used in conjunction with adaptive optics for enhanced imaging and detection capabilities in scattering reservoir media. Advanced fluorescence techniques are used to allow for super-penetration imaging to compensate for aberrations both in and out of the field of interest, extending the depth at which pore geometry can be imaged within a rock matrix beyond the current capability of confocal microscopy. The placement of a Deformable Mirror or Spatial Light Modulator for this application, in which scattering and index mismatch are dominant aberrations, is in an optical plane that is conjugate to the pupil plane of the objective lens in the imaging system.Type: GrantFiled: March 4, 2016Date of Patent: July 10, 2018Assignees: ARAMCO SERVICES COMPANY, SAUDI ARABIAN OIL COMPANY, TRUSTEES OF BOSTON UNIVERSITYInventors: Thomas Bifano, Shannon L. Eichmann, Bennett B. Goldberg, Mazen Kanj, Hari P. Paudel, William Shain
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Publication number: 20160259156Abstract: Embodiments of the invention provide an imaging system and method using adaptive optics and optimization algorithms for imaging through highly scattering media in oil reservoir applications and lab-based petroleum research. Two-/multi-photon fluorescence microscopy is used in conjunction with adaptive optics for enhanced imaging and detection capabilities in scattering reservoir media. Advanced fluorescence techniques are used to allow for super-penetration imaging to compensate for aberrations both in and out of the field of interest, extending the depth at which pore geometry can be imaged within a rock matrix beyond the current capability of confocal microscopy. The placement of a Deformable Mirror or Spatial Light Modulator for this application, in which scattering and index mismatch are dominant aberrations, is in an optical plane that is conjugate to the pupil plane of the objective lens in the imaging system.Type: ApplicationFiled: March 4, 2016Publication date: September 8, 2016Inventors: Thomas Bifano, Shannon L. Eichmann, Bennett B. Goldberg, Mazen Kanj, Hari P. Paudel, William Shain