Patents by Inventor Jan C. Au

Jan C. Au 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: 4813436
    Abstract: A motion analysis system and apparatus incorporates markers which are secured at various joints of the subject's body as well as pressure sensitive shoes or insoles which are worn by the subject. The subject is caused to perform motion such as walking or running. While performing this motion, the subject is televised by means of two video cameras. The video signal from the cameras is stored by means of video recorders and then processed on a frame-to-frame basis to provide digitized data. The pressure sensitive insoles provide signals which are processed according to analog to digital conversion techniques whereby a display is also provided which indicates the pressure applied to the subject's foot while performing.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: March 21, 1989
    Assignee: Human Performance Technologies, Inc.
    Inventor: Jan C. Au