Patents by Inventor Ellen A. Keen

Ellen A. Keen 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: 5430473
    Abstract: A two-way video telephone station includes a television screen for displaying an image transmitted by a distant party to a telephone conversation, a video camera for electronically photographing a human subject and periodically transmitting his picture to the distant party, and position-indicating apparatus for keeping the subject within the camera's field of view. The position-indicating apparatus includes a pair of light-emitting diodes (LEDs)--one on each side of the camera. The LEDs are visible to the subject when he is out, or almost out, of the camera's field of view. Because the LEDs can only be seen when the subject needs to take corrective action, they act as passive restraints that are completely unnoticed when the subject is properly positioned. Red LEDs are used to indicate that movement should stop if the subject wishes to be centered in the picture transmitted to the distant party.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: July 4, 1995
    Assignee: AT&T Corp.
    Inventors: Robert L. Beecher, II, Michael R. Groesch, Daniel M. Iaria, Ellen A. Keen