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. 11, 2014
Filed:
Jun. 22, 2010
Łukasz Twardowski, Łódź, PL;
Łukasz Twardowski, Łódź, PL;
TomTom Polska Sp. z.o.o., Warsaw, PL;
Abstract
A method for detecting inland barrier (') crossings () using speed layers from community input probe traces in combination with a digital map. Inland barrier crossing specifications are detected and/or validated using information about the speed of probes that actually cross the barrier (′). A bridge () across the inland barrier () is inferred if the velocity average for barrier crossing probe traces is greater than an established threshold value. Conversely, a ferry () is inferred if the average velocity for barrier crossing probe traces is less than the established threshold value. When there is a prominent gap in the data for the barrier crossing probe traces, a tunnel () is inferred.