Patents by Inventor Oh-Chung Ho

Oh-Chung Ho 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).

  • Grinding method and system with non-contact real-time detection of workpiece thinkness
    Patent number: 7734081
    Abstract: A grinding method includes the steps of: enabling an image-capturing device to capture a set of consecutive images containing a workpiece being ground by a grinding device; enabling an image-processing device to identify the workpiece from the images, to detect a top edge of the identified workpiece from a latest one of the images, to locate a set of image pixels that lie on the top edge of the workpiece, and to determine relative heights of the image pixels; and enabling a controlling device to control grinding operation of the grinding device with reference to the relative heights of the image pixels. A system that performs the grinding method is also disclosed.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: June 8, 2010
    Assignee: Feng Chia University
    Inventors: Thong-Shing Hwang, Hsien-Yao Li, Oh-Chung Ho
  • Grinding method and system with non-contact real-time detection of workpiece thickness
    Publication number: 20080132149
    Abstract: A grinding method includes the steps of: enabling an image-capturing device to capture a set of consecutive images containing a workpiece being ground by a grinding device; enabling an image-processing device to identify the workpiece from the images, to detect a top edge of the identified workpiece from a latest one of the images, to locate a set of image pixels that lie on the top edge of the workpiece, and to determine relative heights of the image pixels; and enabling a controlling device to control grinding operation of the grinding device with reference to the relative heights of the image pixels. A system that performs the grinding method is also disclosed.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 5, 2008
    Inventors: Thong-Shing Hwang, Hsien-Yao Li, Oh-Chung Ho