Patents by Inventor Chi Kit Ronald Chung

Chi Kit Ronald Chung 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: 7676114
    Abstract: A system for three-dimensional reconstruction of a surface profile of a surface of an object is provided that utilizes a binary pattern projected onto the surface of the object. A binary string consisting of a series of “1”s and “0”s is first created, and a binary pattern of light that is constructed in accordance with the binary string such that bright and dark bands of light of equal widths correspond to “1”s and “0”s from the binary string respectively is projected onto the surface. The binary pattern is shifted with respect to the surface multiple times, during which an image of the binary pattern illuminating the surface is obtained at each position of the binary pattern. Thereafter, a height of each predetermined point on the surface is calculated relative to a reference plane based upon the images cumulatively obtained at said predetermined point.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: March 9, 2010
    Assignee: ASM Assembly Automation Ltd.
    Inventors: Chi Kit Ronald Chung, Jun Cheng, Y. Edmund Lam, Shun Ming Kenneth Fung, Fan Wang, Wing Hong Leung