Patents by Inventor Cheng Ta Chang

Cheng Ta 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).

  • Patent number: 11994736
    Abstract: An imaging lens assembly has an optical axis and includes an annular structure located on an object side of the imaging lens assembly and surrounds the optical axis. The annular structure is located on an object side of the imaging lens assembly, surrounds the optical axis, and includes a first through hole, a second through hole, a first frustum surface, a second frustum surface and a third frustum surface. The first through hole is disposed on an object side of the annular structure, and the second through hole is disposed on an image side of the first through hole. The first frustum surface is disposed on the image side of the first through hole. The second frustum surface is disposed on an object side of the second through hole. The third frustum surface is disposed on an image side of the second through hole.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: May 28, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Yu-Chen Lai, Ming-Ta Chou, Cheng-Feng Lin, Ming-Shun Chang
  • Patent number: 11983271
    Abstract: A processor may generate an enforcement point. The enforcement point may include one or more adversarial detection models. The processor may receive user input data. The processor may analyze, at the enforcement point, the user input data. The processor may determine, from the analyzing, whether there is an adversarial attack in the user input data. The processor may generate an alert based on the determining.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: May 14, 2024
    Assignee: International Business Machines Corporation
    Inventors: Bruno dos Santos Silva, Cheng-Ta Lee, Ron Williams, Bo-Yu Kuo, Chao-Min Chang, Sridhar Muppidi
  • Patent number: 7796558
    Abstract: The Inter-System handover is one of the key features in the third generation cellular systems. The compressed mode, with variable transmission gaps and power levels, is standardized to support the inter-frequency system handover. To minimize the use of system resources while maintaining the border-cell handover quality, a capacity-based compressed mode control method of the present invention is proposed. Considering the tradeoff between the capacity and the communication quality, the control method can adaptively manage the compressed mode operation based on the potential impacts on the capacity and the effectiveness of the compressed mode measurement. The present invention will improve the effectiveness and performance of the compressed mode operation.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: September 14, 2010
    Assignee: National Chiao Tung University
    Inventors: Ching Yao Huang, Cheng Ta Chang, Chieh Yuan Ho
  • Publication number: 20070258410
    Abstract: The Inter-System handover is one of the key features in the third generation cellular systems. The compressed mode, with variable transmission gaps and power levels, is standardized to support the inter-frequency system handover. To minimize the use of system resources while maintaining the border-cell handover quality, a capacity-based compressed mode control method of the present invention is proposed. Considering the tradeoff between the capacity and the communication quality, the control method can adaptively manage the compressed mode operation based on the potential impacts on the capacity and the effectiveness of the compressed mode measurement. The present invention will improve the effectiveness and performance of the compressed mode operation.
    Type: Application
    Filed: November 1, 2006
    Publication date: November 8, 2007
    Applicant: National Chiao Tung University
    Inventors: Ching Yao Huang, Cheng Ta Chang, Chieh Yuan Ho