Patents by Inventor Langtao Lui

Langtao Lui 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).

  • Navigation system
    Patent number: 6278944
    Abstract: A navigation system, used for example to navigate visually handicapped people, uses a satellite system such as the GPS system to locate the user via a user held receiver (14). A two-way communication system such as a digital telephone (18) communicates with a central service center (10) at which the user's exact location and navigational information can be determined. There is preferably provided a human-to-human information interface (30). The use of a two-way communication system (18) enables some of the components (20-30) to be kept at a remote and stationary base station (10).
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: August 21, 2001
    Assignee: Brunel University
    Inventors: Langtao Lui, Wamadeva Balachandran