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:
Aug. 30, 2016
Filed:
Jun. 19, 2014
Alain Brillon, Villeneuve Tolosane, FR;
Isabelle Verdon, Cornebarrieu, FR;
Alain Brillon, Villeneuve Tolosane, FR;
Isabelle Verdon, Cornebarrieu, FR;
CONTINENTAL AUTOMOTIVE FRANCE, Toulouse, FR;
CONTINENTAL AUTOMOTIVE GMBH, Hannover, DE;
Abstract
Method for improving the security of communication between the electronic key and vehicle to prevent interception by a third-party item of electronic equipment by highlighting in such event, a time delay in acknowledgement of this signal by the key. This method includes, before authorizing the access to and/or starting of the vehicle, additional steps of adapting the amplitude of a coded identification request signal received by the key to reach the detection threshold of the key as soon as possible; measuring the sum of the duration of the emission of the coded interrogation signal and of the duration of the response signal of the electronic key; comparing the sum of the measured durations to a reference duration, and triggering an alarm relating to the conditions of access to and/or starting of the vehicle when the separation between this sum of durations and the reference duration is above a preset threshold.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile