Patents by Inventor Ellen L. Oschmann

Ellen L. Oschmann 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).

  • Method and apparatus for locating a transmitter of a diffuse infrared signal within an enclosed area
    Patent number: 5903373
    Abstract: A method and apparatus is provided of locating a portable remote station transceiving a diffuse infrared communicated signal within an enclosed area containing a plurality of stationary infrared transceivers interconnected with a central controller. The method includes the steps of detecting a particular transmission of the diffuse infrared communicated signal from the portable remote station within the enclosed area by the plurality of stationary transceivers and measuring a parametric value of the particular signal received by each stationary transceiver of the plurality of stationary transceivers. The method further includes the step of locating the portable remote station based upon differences in the parametric value measured at each stationary transceivers.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: May 11, 1999
    Assignee: Spectrix Corporation
    Inventors: Jeffrey Peter Welch, Ellen L. Oschmann
  • Method and apparatus for locating a transmitter of a diffuse infrared signal within an enclosed area
    Patent number: 5838472
    Abstract: A method and apparatus is provided of locating a portable remote station transceiving a diffuse infrared communicated signal within an enclosed area containing a plurality of stationary infrared transceivers interconnected with a central controller. The method includes the steps of detecting a particular transmission of the diffuse infrared communicated signal from the portable remote station within the enclosed area by the plurality of stationary transceivers and measuring a parametric value of the particular signal received by each stationary transceiver of the plurality of stationary transceivers. The method further includes the step of locating the portable remote station based upon differences in the parametric value measured at each stationary transceivers.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: November 17, 1998
    Assignee: Spectrix Corporation
    Inventors: Jeffrey Peter Welch, Ellen L. Oschmann
  • Wireless diffuse infrared LAN system
    Patent number: 5724168
    Abstract: A wireless diffuse infrared local area network communication system is provided for enclosed areas. The communication system includes a controller and a substantially omnidirectional infrared transceiver disposed on an inside walls of the enclosed area operatively interconnected with the controller. The system further includes a remote station and means, operatively coupled to the remote station, for transceiving a communicated signal with the substantially omnidirectional infrared transceiver.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: March 3, 1998
    Assignee: Spectrix Corporation
    Inventors: Ellen L. Oschmann, Jeffrey Peter Welch
  • Wireless diffuse infrared LAN transceiver
    Patent number: D368260
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: March 26, 1996
    Assignee: Spectrix Corporation
    Inventors: Ellen L. Oschmann, Jeffrey P. Welch