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:
Dec. 12, 2017
Filed:
Jul. 02, 2014
Applicant:
Xing Ping Lin, Orchard Lake, MI (US);
Inventor:
Xing Ping Lin, Orchard Lake, MI (US);
Assignee:
TRW Automotive U.S. LLC, Farmington Hills, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
G07C 9/00 (2006.01); B60R 25/20 (2013.01); B60R 25/01 (2013.01);
U.S. Cl.
CPC ...
G07C 9/00309 (2013.01); B60R 25/01 (2013.01); B60R 25/20 (2013.01); G07C 2009/00555 (2013.01); G07C 2009/00769 (2013.01);
Abstract
Method for preventing security breaches via the two-thief method of attack of passive remote keyless entry systems for vehicles. The method involves the measurement of air travel time of the RF messages between the RKE fob and the vehicle. Multiple round trips between the fob and the vehicle are employed to magnify the distance covered by the messages and thereby allow accurate measurement of the air travel time.