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:
Feb. 24, 2015
Filed:
Nov. 29, 2011
Dieter Smely, Schwechat, AT;
Josef Winkler, Baden, AT;
Oliver Nagy, Vienna, AT;
Alexander Paier, Vienna, AT;
Robert Povolny, Vienna, AT;
Dieter Smely, Schwechat, AT;
Josef Winkler, Baden, AT;
Oliver Nagy, Vienna, AT;
Alexander Paier, Vienna, AT;
Robert Povolny, Vienna, AT;
Kapsch TrafficCom AG, Vienna, AT;
Abstract
The invention relates to a method for determining the distance between a radio beacon and a vehicle device passing in front of said radio beacon, in a road toll system. A signal of a frequency having a known temporal profile is emitted. Said method consists of the following steps: the signal is captured in the other component when passing and the temporal profile of the frequency is recorded in relation to the known temporal profile; a modification in the recorded frequency profile exceeding a first threshold value is detected; two distant wave zones in the frequency profile, lying temporally in front of and behind the detected modification, which displays a frequency modification below a second threshold value, are searched for; the recorded frequency profile is scaled in such a manner that the distance wave zones take the predetermined values; and said distance 'a' from the scaled frequency path is determined. The invention also relates to radio beacons, installations and vehicle devices for implementing the method.