Patents by Inventor David Törnqvist

David Törnqvist 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 device for indoor positioning
    Patent number: 8498811
    Abstract: The present invention relates to a method for positioning a user inside a building, wherein the user has a user carried device (100) and the user carried device (100) is provided with a direction sensor (110) and a movement sensor (110). The method comprises the steps of providing the user carried device with a vector map (220) of the building, wherein the vector map (220) comprises vectors and nodes representing possible movement paths for the user in the building; determining a starting point in the vector map representing a first position of the user; receiving movement information from the movement sensor (110) regarding movement of the user in the building; receiving direction information from the direction sensor (110) regarding the direction of the movement of the user; and estimating a new position of the user based on the vector map, the movement information and the direction information.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: July 30, 2013
    Assignee: Senionlab AB
    Inventors: Christian Lundquist, Per Skoglar, Fredik Gustafsson, David Törnqvist, Jonas Callmer
  • Method and device for indoor positioning
    Publication number: 20120203453
    Abstract: The present invention relates to a method for positioning a user inside a building, wherein the user has a user carried device (100) and the user carried device (100) is provided with a direction sensor (110) and a movement sensor (110). The method comprises the steps of providing the user carried device with a vector map (220) of the building, wherein the vector map (220) comprises vectors and nodes representing possible movement paths for the user in the building; determining a starting point in the vector map representing a first position of the user; receiving movement information from the movement sensor (110) regarding movement of the user in the building; receiving direction information from the direction sensor (110) regarding the direction of the movement of the user; and estimating a new position of the user based on the vector map, the movement information and the direction information.
    Type: Application
    Filed: February 9, 2011
    Publication date: August 9, 2012
    Applicant: SenionLab AB
    Inventors: Christian Lundquist, Per Skoglar, Fredrik Gustafsson, David Törnqvist, Jonas Callmer