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:
Nov. 05, 2019
Filed:
Nov. 26, 2015
Husqvarna Ab, Huskvarna, SE;
HUSQVARNA AB, Huskvarna, SE;
Abstract
A robotic lawnmower () for movable operation within a work area () has a satellite navigation device (), a deduced reckoning navigation sensor () and a controller (). The controller causes the robotic lawnmower () to movably operate within the work area () in a first operating mode, the first operating mode being based on positions determined from satellite signals received by the satellite navigation device (). The controller determines that a position cannot be reliably determined based on satellite signals received by the satellite navigation device (), and in response thereto causes the robotic lawnmower () to movably operate within the work area () in a second operating mode. In the second operating mode, a deduced reckoning position estimate is obtained by the deduced reckoning navigation device (). A search space is defined using the deduced reckoning position estimate, and the satellite navigation device () is recalibrated based on the defined search space. Once the satellite navigation device () has been recalibrated, the controller causes the robotic lawnmower () to again operate in the first operating mode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile