Patents by Inventor Rolf Berlin

Rolf Berlin 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 for localization of beacons for an autonomous device
    Patent number: 5682313
    Abstract: The present invention provides an improved method for determining a coarse direction in an orientation system of a an autonomous device (10), for instance a dust cleaning robot together with a system of active beacons or transponders. A transmitter (20) for transmitting sensing signals is displaced in relation to the rotational center (25) of the the device (10). When the device is rotated around a vertical rotational axis in the rotational center, a minimum in the distance to the respective transponder or beacon is obtained when the transmitter of the device is positioned immediate to a point lying on a straight line between the rotational center of the device and a respective transponder, whereby an immediate coarse determination of the direction to each transponder is directly obtained.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: October 28, 1997
    Assignee: Aktiebolaget Electrolux
    Inventors: Leif Edlund, Rolf Berlin, Charles R. Davidsson