Patents by Inventor Kai Han

Kai Han 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: 12087190
    Abstract: A system for calibrating a waveguide-based holographic head-up display that projects images upon a windscreen of a vehicle including a light-diffusing panel positioned at the center of an eyellipse to reflect the images projected by the waveguide-based holographic head-up display. An eyebox of the waveguide-based holographic head-up display is positioned at the center of the eyellipse, and the eyebox is divided into a plurality of unit exit pupils. The system also includes a camera positioned to capture the images reflected by the light-diffusing panel and one or more controllers in electronic communication with the waveguide-based holographic head-up display and the camera. The one or more controllers execute instructions to determine a warp map based on a plurality of corrected individual calibration patterns.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: September 10, 2024
    Assignee: GM GLOBAL TEACHNOLOGY OPERATIONS LLC
    Inventors: Kai-Han Chang, Thomas A. Seder, Manoj Sharma
  • Publication number: 20240286095
    Abstract: In one aspect, a system for dispersing particles in a fluid of a fluid container includes one or more permanent magnets, one or more electric coils, and/or one or more electrodes. The one or more permanent magnets, one or more electric coils, and/or one or more electrodes are configured to disperse the particles in the fluid of the fluid container.
    Type: Application
    Filed: February 24, 2023
    Publication date: August 29, 2024
    Inventors: CHRISTOPHER A. SOBECKI, KAI HAN
  • Patent number: 12031835
    Abstract: A head-up display system includes a first plurality of on-board sensors adapted to detect vehicle driving characteristics, a wireless communication module adapted to receive information from external sources, a driver monitoring system adapted to track a driver's eyes, and a controller in electronic communication with the first plurality of on-board sensors and the wireless communication module, the controller adapted to determine if the vehicle is performing a parking maneuver, and, when the vehicle is performing a parking maneuver, to capture images of an environment surrounding the vehicle, detect objects within the environment, identify location markers for a parking space and objects within the environment surrounding the vehicle adjacent to the parking space, determine the position of the vehicle relative to the identified location markers and objects, and display, with a projection module a parking assist graphic adapted to provide guidance to a driver of the vehicle.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: July 9, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: John P. Weiss, Joseph F. Szczerba, Thomas A. Seder, Kai-Han Chang
  • Patent number: 12021126
    Abstract: Aspects of the disclosure provide a method for fabricating a semiconductor device having an first stack of alternating insulating layers and sacrificial word line layers arranged over a substrate, the first stack including a core region and a staircase region. The method can include forming a first dielectric trench in the core region of the first stack, forming a second dielectric trench that is adjacent to and connected with the first dielectric trench in the staircase region of the first stack, and forming dummy channel structures extending through the first stack where the dummy channel structures are spaced apart from the second dielectric trench.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: June 25, 2024
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Hang Yin, Zhipeng Wu, Kai Han, Lu Zhang, Pan Wang, Xiangning Wang, Hui Zhang, Jingjing Geng, Meng Xiao
  • Patent number: 12011999
    Abstract: A method for holographic display calibration using phase modulation includes projecting an initial graphic on a windshield of a vehicle, capturing an image of the initial graphic with a camera inside a vehicle, determining a loss function value between the image of the initial graphic captured by the camera and a target graphic, modulating a phase of a light beam generating the initial graphic using the loss function value to generate an updated graphic, and displaying the updated graphic on the windshield of the vehicle.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: June 18, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Manoj Sharma, Kai-Han Chang, Thomas A. Seder
  • Publication number: 20240184157
    Abstract: An optical device includes a first set of one or more electrodes, a second set of one or more electrodes distinct and separate from the first set of one or more electrodes, and a medium that includes liquid crystal physical gel. The medium is located between the first set of one or more electrodes and the second set of one or more electrodes. The optical device may operate as an optical dimming device, which may be used in head-mounted display devices or as dimmable windows or shutters.
    Type: Application
    Filed: November 21, 2023
    Publication date: June 6, 2024
    Inventors: Xi WU, Nicholas John DIORIO, JR., Gareth John VALENTINE, Kai-Han CHANG, Chenrun FENG, Afsoon JAMALI, Francis Lawrence LEARD, Jasmine Soria SEARS, Olga Vladimirovna BARYKINA-TASSA
  • Patent number: 12001168
    Abstract: A holographic projection system including first, second and third light sources, SLMs, a lens, a combiner and a control module. The first, second and third light sources generate respective light beams. The light beams have respective wavelengths. The SLMs respectively diffract the light beams. The lens is disposed to adjust a divergence angle of one of the light beams, such that diffracted light out of each of the SLMs is at a same diffraction angle. The SLMs encode phase holograms including respective versions of a graphic image based on light generated by the light sources including light output from the lens to provide phase hologram beams. The combiner combines the phase hologram beams to provide a combined phase hologram beam projected for viewing a combined graphic image. The control module encodes a prism hologram on one of the SLMs to align outputs of the SLMs.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: June 4, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Kai-Han Chang, Thomas A. Seder
  • Patent number: 11985297
    Abstract: A system for generating a centrally located floating three-dimensional image display for a plurality of passengers positioned within a vehicle includes a plurality of autostereoscopic three-dimensional displays, one autostereoscopic three-dimensional display individually associated with each one of the plurality of passengers, and a controller in communication with each of the plurality of autostereoscopic three-dimensional displays and adapted to cause each one of the plurality of autostereoscopic three-dimensional displays to display a three-dimensional image to the associated one of the plurality of passengers, wherein, each of the plurality of passengers perceives the three-dimensional image floating at a central location within the vehicle.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: May 14, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Manoj Sharma, Kai-Han Chang, Thomas A. Seder, Joseph F. Szczerba
  • Patent number: 11985826
    Abstract: A plurality of holes are formed extending vertically in a first dielectric deck that includes interleaved a plurality of first sacrificial layers and a plurality of first dielectric layers over a substrate. A plurality of sacrificial structures are formed in the holes. A second dielectric deck is formed having interleaved a plurality of second sacrificial layers and a plurality of second dielectric layers over the first dielectric deck. A slit opening is formed extending in the second dielectric deck, the slit opening aligned with and over the sacrificial source contact structures. The sacrificial structures are removed through the slit openings such that the slit opening is in contact with the holes to form a slit structure. A plurality of conductor layers are formed in the first and second dielectric decks through the slit structure, forming a memory stack. A source contact structure is formed in the slit structure.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: May 14, 2024
    Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
    Inventors: Lu Zhang, Zhipeng Wu, Bo Xu, Kai Han, Chuan Yang, Zi Yin, Liuqun Xie
  • Patent number: 11978265
    Abstract: A method for displaying lane information on an augmented reality display includes receiving roadway data. The roadway data includes information about a roadway along a route of a vehicle. The roadway includes a plurality of lanes. The roadway data includes lane information about at least one of the plurality of lanes along the route of the vehicle. The method further includes receiving vehicle-location data. The vehicle-location data indicates a location of the vehicle. The method further includes determining that that the vehicle is approaching a road junction using the vehicle-location data and the roadway data. The method further includes, in response to determining that the vehicle is approaching the road junction, transmitting a command signal to a dual-focal plane augmented reality display to display at least one virtual image that is indicative of the lane information.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: May 7, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Joseph F. Szczerba, John P. Weiss, Kai-Han Chang, Thomas A. Seder
  • Publication number: 20240142776
    Abstract: A pupil replicator for a head up display system includes a waveguide adapted to receive an incoming image beam, and including a transparent body having a partially transmissive top surface and a reflective bottom surface, a Dammann grating adapted to create a plurality of duplicate image beams having equal intensity, and reflect each of the plurality of duplicate image beams within the waveguide, and a beam aligning device adapted to receive each of the plurality of duplicate image beams and to reflect each of the plurality of duplicate image beams at a common angle relative to the waveguide, wherein, after being reflected by the beam aligning device, each of the plurality of duplicate image beams are parallel to one another.
    Type: Application
    Filed: October 26, 2022
    Publication date: May 2, 2024
    Inventors: Manoj Sharma, Thomas A. Seder, Kai-Han Chang
  • Patent number: 11971544
    Abstract: A hybrid augmented reality head-up display system for displaying graphics upon a windscreen of a vehicle includes a windscreen having a transparent substrate including light emitting particles dispersed within, a primary graphic projection device for generating a first set of images upon the windscreen of the vehicle based on visible light, and a secondary graphic projection device for generating a second set of images upon a secondary area the windscreen of the vehicle based on an excitation light. The first set of images are displayed upon a primary area of the windscreen. The light emitting particles in the windscreen emit visible light in response to absorbing the excitation light. The first set of images displayed upon the primary area of the windscreen cooperate with the second set of images displayed upon the secondary area of the windscreen to create an edge-to-edge augmented reality view.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: April 30, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Thomas A. Seder, Kai-Han Chang, Joseph F. Szczerba, John P. Weiss
  • Patent number: 11947315
    Abstract: A holographic projection system includes a SLM that receives a light beam and generates a modulated beam projected at an eyebox, where: the modulated beam includes multiple versions of a test image; and the test image includes bright objects and transparent regions, which are selected dark areas of interest for measuring luminance. A control module runs a test to characterize contrast in each of multiple virtual image planes including: controlling the SLM to generate the modulated beam; measuring luminance levels of each of the versions of the test image displayed in the virtual image planes; calculating contrast ratios based on the luminance levels of each of the versions of the test image; determining whether the contrast ratios are within predetermined ranges of predetermined contrast ratios; and adjusting operation of the SLM in response to one of the contrast ratios not being within a corresponding one of the predetermined ranges.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: April 2, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Thomas A. Seder, Kai-Han Chang
  • Patent number: 11938821
    Abstract: A method and a system for user interaction with a hologram includes displaying the hologram inside a passenger compartment of the vehicle, after displaying the hologram inside the passenger compartment of the vehicle, monitoring a vehicle user inside the passenger compartment of the vehicle to determine whether the vehicle user provided a user command, determining that the vehicle user provided the user command, and in response to determining that the vehicle user provided the user command, manipulating the hologram in accordance with the user command.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: March 26, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Joseph F. Szczerba, Kai-Han Chang, Manoj Sharma, Thomas A. Seder
  • Patent number: 11935200
    Abstract: A method for displaying infrastructure information on a multi-focal plane augmented reality display of a vehicle includes receiving infrastructure data. The infrastructure data includes information about a location of at least one infrastructure along a route of the vehicle. The method further includes receiving vehicle-location data. The vehicle-location data includes information about a location of the vehicle. The method further includes determining a position of the vehicle relative to the location of the least one infrastructure using the infrastructure data and the vehicle-location data. The method further includes transmitting a command signal to the multi-focal plane augmented reality display to display a virtual image showing the infrastructure information of the infrastructure on the multi-focal plane augmented reality display.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: March 19, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Joseph F. Szczerba, John P. Weiss, Kai-Han Chang, Thomas A. Seder
  • Patent number: 11915395
    Abstract: A holographic display system provides a maximum intensity value of an intermediate image to decrease a graphics speckle noise. The system includes an SLM having a display with a hologram generating unit and a plurality of pixels for modulating a beam of coherent light. The system further includes a beam splitter for splitting the beam into an object beam and an intermediate image beam that is associated with an intermediate image having the noise. The system further includes a camera for capturing the intermediate image, in response to the camera receiving the intermediate image beam. The system further includes a computer having a processor and a CRM. The processor is programmed to generate an actuation signal associated with a corrective holographic phase shift to decrease the noise. The SLM modifies in real-time a holographic phase of the beam per pixel, in response to the SLM receiving the actuation signal.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: February 27, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Manoj Sharma, Kai-Han Chang, Thomas A. Seder
  • Publication number: 20240064281
    Abstract: A system for generating a centrally located floating three-dimensional image display for a plurality of passengers positioned within a vehicle includes a plurality of autostereoscopic three-dimensional displays, one autostereoscopic three-dimensional display individually associated with each one of the plurality of passengers, and a controller in communication with each of the plurality of autostereoscopic three-dimensional displays and adapted to cause each one of the plurality of autostereoscopic three-dimensional displays to display a three-dimensional image to the associated one of the plurality of passengers, wherein, each of the plurality of passengers perceives the three-dimensional image floating at a central location within the vehicle.
    Type: Application
    Filed: August 16, 2022
    Publication date: February 22, 2024
    Inventors: Manoj Sharma, Kai-Han Chang, Thomas A. Seder, Joseph F. Szczerba
  • Patent number: 11898867
    Abstract: A method for replaying route data with annotation for re-display comprises: recording a recorded-route-replay by a first user of a first automobile vehicle and saving the recorded-route-replay to a website; electing to trigger playback of the recorded-route-replay by a second user of a second automobile vehicle and entering a predetermined key word by the second user to trigger playback; contacting a website and downloading from the website GPS tagged pictures for a predetermined next trip travel distance of the second automobile vehicle; and retrieving one of the GPS tagged pictures when a GPS trigger location is reached during the trip of the second automobile vehicle and displaying the one of the GPS tagged pictures on an image screen of a head-up display of second automobile vehicle.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: February 13, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Thomas A. Seder, Kai-Han Chang
  • Publication number: 20240045204
    Abstract: A system for displaying information for an occupant of a vehicle includes a plurality of vehicle sensors, a display, and a controller in electrical communication with the plurality of vehicle sensors and the display. The controller is programmed to detect a remote vehicle in an environment surrounding the vehicle using the plurality of vehicle sensors, determine an intended illumination status of at least one indicator of the remote vehicle using the plurality of vehicle sensors, where the intended illumination status includes an intended lit status and an intended un-lit status, and display a graphic based at least in part on the intended illumination status of the at least one indicator of the remote vehicle using the display.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 8, 2024
    Inventors: Jacob Alan Bond, Joseph F. Szczerba, John P. Weiss, Kai-Han Chang, Thomas A. Seder
  • Publication number: 20240042954
    Abstract: A system for displaying information to an occupant of a vehicle includes a microphone, a camera for capturing images of an environment surrounding the vehicle, a display, and a controller in electrical communication with the microphone, the camera, and the display. The controller is programmed to receive a voice command from the occupant using the microphone, determine at least one characteristic of the requested object based on the voice command, capture an image of the environment using the camera, where the environment includes a relevant object, and to identify a location of the relevant object in the environment based at least in part on the image and the at least one characteristic of the requested object. The controller is further programmed to display a graphic based at least in part on the location of the relevant object in the environment using the display.
    Type: Application
    Filed: August 8, 2022
    Publication date: February 8, 2024
    Inventors: Jacob Alan Bond, Joseph F. Szczerba, Kai-Han Chang