Patents by Inventor Edward Inglis

Edward Inglis 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: 6690449
    Abstract: A device that provides a display indicating an absence of power to an LCD is disclosed. The device includes a continuous polarizing filter layer disposed within a display area that makes up a portion of the total display area of the LCD. A layer of liquid crystals is disposed between alignment gratings and optically coupled to the continuous polarizing filter layer. A discontinuous polarizing filter layer is optically coupled to the layer of liquid crystals. The discontinuous polarizing filter layer has a plane of polarization aligned with the plane of polarization of the continuous polarizing filter, and the discontinuous polarizing filter layer comprises a contour within the display area conforming to an image, so that the image is displayed in the absence of an electric field and indicates an absence of power.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: February 10, 2004
    Assignee: Cisco Technology, Inc.
    Inventors: Edward Inglis, Andrew Cawte