The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2018
Filed:
Dec. 19, 2013
Husqvarna Ab, Huskvarna, SE;
Peter Reigo, Djursholm, SE;
Stefan Grufman, Bankeryd, SE;
Husqvarna AB, Huskvarna, SE;
Abstract
A robotic work tool system () comprising a robotic work tool (), said robotic work tool () comprising a position determining device () for determining a current position, such as through receiving satellite signals, and a navigation device () arranged to at least provide a compass heading, the robotic work tool () being configured to: determine a compass heading (CH) obtained through the navigation device (); compare the compass heading to a true heading (TH) obtained through the position determining device (); determine an error (e) between the true heading (TH) and the compass heading (CH); determine a robot position (XR; YR); and store the error (e) for said robot position (XR; YR) thereby generating a magnetic correction matrix.