Patents by Inventor Gordon Pipa

Gordon Pipa 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: 6231185
    Abstract: According to the invention, first and second image signals of at least the characteristic region are generated with a camera, whereby the first image signals are generated with a first and the second image signals are generated with the first and an additional, second light source having a light emission different from the first. The first and second image signals are subtracted and difference image signals are generated. These difference image signals are investigated in view of the signals generated from the characteristic region, and the location coordinates of the characteristic region are identified, and a corresponding signal is generated.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: May 15, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventor: Gordon Pipa