Patents by Inventor Ziwen Wayne Liu

Ziwen Wayne Liu 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).

  • DEVICES, PROGRAM PRODUCTS AND COMPUTER IMPLEMENTED METHODS FOR TOUCHLESS METROLOGY HAVING VIRTUAL ZERO-VELOCITY AND POSITION UPDATE
    Publication number: 20160153786
    Abstract: Embodiments of a metrology device and a computer-implemented method generate survey data without touching the subsea objects being surveyed. The metrology device can include an inertial navigation system (INS) outputting position and orientation data of the metrology device; an aiding device positioned at a known distance and orientation with respect to the INS for collecting image data of the subsea objects; and a computer having one or more computer programs that use the image data to calculate measured velocity of the metrology device at first and second subsea objects to perform virtual zero velocity updates, and uses an apparent difference in the position of the first subsea object measured prior and subsequent to measuring the second subsea object to perform virtual position update.
    Type: Application
    Filed: February 1, 2016
    Publication date: June 2, 2016
    Inventors: Ziwen Wayne LIU, Charles William TINK
  • Devices, program products and computer implemented methods for touchless metrology having virtual zero-velocity and position update
    Patent number: 9255803
    Abstract: Embodiments of a metrology device and a computer-implemented method generate survey data without touching the subsea objects being surveyed. The metrology device can include an inertial navigation system (INS) outputting position and orientation data of the metrology device; an aiding device positioned at a known distance and orientation with respect to the INS for collecting image data of the subsea objects; and a computer having one or more computer programs that use the image data to calculate measured velocity of the metrology device at first and second subsea objects to perform virtual zero velocity updates, and uses an apparent difference in the position of the first subsea object measured prior and subsequent to measuring the second subsea object to perform virtual position update.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: February 9, 2016
    Assignee: IPOZ SYSTEMS, LLC
    Inventors: Ziwen Wayne Liu, Charles William Tink
  • DEVICES, PROGRAM PRODUCTS AND COMPUTER IMPLEMENTED METHODS FOR TOUCHLESS METROLOGY HAVING VIRTUAL ZERO-VELOCITY AND POSITION UPDATE
    Publication number: 20150105943
    Abstract: Embodiments of a metrology device and a computer-implemented method generate survey data without touching the subsea objects being surveyed. The metrology device can include an inertial navigation system (INS) outputting position and orientation data of the metrology device; an aiding device positioned at a known distance and orientation with respect to the INS for collecting image data of the subsea objects; and a computer having one or more computer programs that use the image data to calculate measured velocity of the metrology device at first and second subsea objects to perform virtual zero velocity updates, and uses an apparent difference in the position of the first subsea object measured prior and subsequent to measuring the second subsea object to perform virtual position update.
    Type: Application
    Filed: September 10, 2014
    Publication date: April 16, 2015
    Inventors: Ziwen Wayne Liu, Charles William Tink