Patents by Inventor Ruth Raphaeli

Ruth Raphaeli 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 system for distance determination of RF tags
    Patent number: 7511604
    Abstract: The present invention relates to a method and system (10) for distance determination of RF tags (4) and its applications based on measuring the round trip delay, avoiding deterministic collisions between a plurality of wide band response signals transmitted by the tags (4) by adding a pseudo-random time delay to the wide band response signal, and iteratively reducing the collision probability between plurality of wide band response signals.
    Type: Grant
    Filed: May 4, 2003
    Date of Patent: March 31, 2009
    Assignee: Sandlinks Systems Ltd.
    Inventors: Ruth Raphaeli, Dan Raphaeli
  • Method and system for distance determination of rf tags
    Publication number: 20070109099
    Abstract: The present invention relates to a method and system (10) for distance determination of RF tags (4) and its applications based on measuring the round trip delay, avoiding deterministic collisions between a plurality of wide band response signals transmitted by the tags (4) by adding a pseudo-random time delay to the wide band response signal, and iteratively reducing the collision probability between plurality of wide band response signals.
    Type: Application
    Filed: November 12, 2004
    Publication date: May 17, 2007
    Inventors: Ruth Raphaeli, Dan Raphaeli