Patents by Inventor Kai-Han Chang

Kai-Han Chang 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: 20240154027
    Abstract: A high voltage semiconductor device includes a semiconductor substrate, a first drift region, a gate structure, a first sub gate structure, a first spacer structure, a second spacer structure, and a first insulation structure. The first drift region is disposed in the semiconductor substrate. The gate structure is disposed on the semiconductor substrate and separated from the first sub gate structure. The first sub gate structure and the first insulation structure are disposed on the first drift region. The first spacer structure is disposed on a sidewall of the gate structure. The second spacer structure is disposed on a sidewall of the first sub gate structure. At least a part of the first insulation structure is located between the first spacer structure and the second spacer structure. The first insulation structure is directly connected with the first drift region located between the first spacer structure and the second spacer structure.
    Type: Application
    Filed: January 16, 2024
    Publication date: May 9, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Hsin-Han Wu, Kai-Kuen Chang, Ping-Hung Chiang
  • Patent number: 11979479
    Abstract: A packet sorting and reassembly circuit module, including a header parser, an information processing circuit, at least one state tracking and reassembly circuit, and an output arbiter, is provided. The header parser is configured to analyze multiple first packet segments to obtain header information corresponding to a first network packet, wherein the first network packet is transmitted based on a transmission control protocol (TCP) communication protocol. The information processing circuit is configured to transmit the first packet segments and sideband information corresponding to the first packet segments to a first state tracking and reassembly circuit among the at least one state tracking and reassembly circuit according to the header information. The first state tracking and reassembly circuit is configured to reassemble and sort the first packet segments according to the sideband information. The output arbiter is configured to output the first packet segments according to a sorting result.
    Type: Grant
    Filed: January 16, 2023
    Date of Patent: May 7, 2024
    Assignees: Chung Yuan Christian University, KGI Securities Co. Ltd.
    Inventors: Yu-Kuen Lai, Chao-Lin Wang, He-Ping Li, Cheng-Han Chuang, Kai-Po Chang
  • 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
  • Publication number: 20240137431
    Abstract: A packet sorting and reassembly circuit module, including a header parser, an information processing circuit, at least one state tracking and reassembly circuit, and an output arbiter, is provided. The header parser is configured to analyze multiple first packet segments to obtain header information corresponding to a first network packet, wherein the first network packet is transmitted based on a transmission control protocol (TCP) communication protocol. The information processing circuit is configured to transmit the first packet segments and sideband information corresponding to the first packet segments to a first state tracking and reassembly circuit among the at least one state tracking and reassembly circuit according to the header information. The first state tracking and reassembly circuit is configured to reassemble and sort the first packet segments according to the sideband information. The output arbiter is configured to output the first packet segments according to a sorting result.
    Type: Application
    Filed: January 16, 2023
    Publication date: April 25, 2024
    Applicants: Chung Yuan Christian University, KGI Securities Co. Ltd.
    Inventors: Yu-Kuen Lai, Chao-Lin Wang, He-Ping Li, Cheng-Han Chuang, Kai-Po Chang
  • Publication number: 20240115616
    Abstract: The present disclosure provides a method for treating liver cirrhosis by using a composition including mesenchymal stem cells, extracellular vesicles produced by the mesenchymal stem cells, and growth factors. The composition of the present disclosure achieves the effect of treating liver cirrhosis through various efficacy experiments.
    Type: Application
    Filed: October 4, 2023
    Publication date: April 11, 2024
    Inventors: Po-Cheng Lin, Pi-Chun Huang, Zih-Han Hong, Ming-Hsi Chuang, Yi-Chun Lin, Chia-Hsin Lee, Chun-Hung Chen, Chao-Liang Chang, Kai-Ling Zhang
  • 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: 11923435
    Abstract: A high voltage semiconductor device includes a semiconductor substrate, a first drift region, a gate structure, a first sub gate structure, a first spacer structure, a second spacer structure, and a first insulation structure. The first drift region is disposed in the semiconductor substrate. The gate structure is disposed on the semiconductor substrate and separated from the first sub gate structure. The first sub gate structure and the first insulation structure are disposed on the first drift region. The first spacer structure is disposed on a sidewall of the gate structure. The second spacer structure is disposed on a sidewall of the first sub gate structure. At least a part of the first insulation structure is located between the first spacer structure and the second spacer structure. The first insulation structure is directly connected with the first drift region located between the first spacer structure and the second spacer structure.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: March 5, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hsin-Han Wu, Kai-Kuen Chang, Ping-Hung Chiang
  • 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: 20240042851
    Abstract: A head-up display for displaying graphics upon a windscreen of a vehicle includes a graphic projection module for generating images upon the windscreen of the vehicle, a user input device for receiving user-generated commands created by a user of the vehicle, and one or more controllers in electronic communication with the graphic projection module and the user input device. The controller executes instructions to instruct the graphic projection module to generate a luminance adjustment graphic, where the luminance adjustment graphic includes an adaptive color palette graphic including two or more colors. The controller receives, from the user input device, a user-generated luminance input indicating a change in a level of luminance in a selected color, where the change in the level of luminance in the selected color is selected by the user to discern differences between the two or more colors caused by a color vision deficiency.
    Type: Application
    Filed: August 8, 2022
    Publication date: February 8, 2024
    Inventors: Kai-Han Chang, Thomas A. Seder
  • Publication number: 20240046619
    Abstract: A system comprises a computer including a processor and a memory. The memory includes instructions such that the processor is programmed to receive, at a deep neural network, an image captured by an image capture device. The processor is also programmed to generate a predicted distortion map based on the image and update at least one weight of the deep neural network based on a loss function of the deep neural network.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 8, 2024
    Inventors: Manoj Sharma, 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
  • Publication number: 20240027756
    Abstract: A head-up display system includes a projector adapted to project an image, a primary reflector, and an exit pupil replicator, the primary reflector adapted to reflect an image projected by the projector to the exit pupil replicator, and the exit pupil replicator adapted to split the projected image into a two-dimensional array of identical projected images having equal intensity.
    Type: Application
    Filed: July 25, 2022
    Publication date: January 25, 2024
    Inventors: Kai-Han Chang, Manoj Sharma, Thomas A. Seder
  • Publication number: 20240025250
    Abstract: A head-up display system for displaying graphics upon a windscreen of a vehicle to provide a driver with a gamified experience includes a driver monitoring system including one or more cameras that determine a location of a head of the driver of the vehicle and an eye location of the driver, a graphic projection module for generating images upon the windscreen of the vehicle, and one or more controllers in electronic communication with the driver monitoring system and the graphic projection module. The controller executes instructions to instruct the graphic projection module to generate a vertical alignment graphic upon the windscreen of the vehicle. The vertical alignment graphic indicates when the eye location of the driver is positioned at a nominal height of an eyebox of the head-up display.
    Type: Application
    Filed: July 25, 2022
    Publication date: January 25, 2024
    Inventors: Guy N. Kennerly, Kai-Han Chang, James W. Wells, Thomas A. Seder