公开(公告)号：US20180194321A1

公开(公告)日：2018-07-12

申请号：US15866032

申请日：2018-01-09

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Uwe ZANK ,  Ralf STROKOSCH ,  Ahmet CINAR ,  Sebastian OPPENLAENDER ,  Markus WOLFF

IPC: B60R25/04 ,  G07C9/00 ,  B60R25/24 ,  B60R25/20

CPC classification number: B60R25/04 ,  B60R25/01 ,  B60R25/2036 ,  B60R25/209 ,  B60R25/248 ,  B60R2025/0405 ,  E05B81/78 ,  G07C9/00182 ,  G07C9/00309 ,  G07C2009/00555

Abstract: The disclosure relates to a method to lock, unlock and start a vehicle without using a radio key or electronic vehicle key. According to the disclosure, the function of starting the vehicle without actively using the key is blocked when the vehicle is locked. When the vehicle is unlocked in a manner secured against relay station attacks, the possibility exists of starting the vehicle without actively using the key.

公开(公告)号：US20180194322A1

公开(公告)日：2018-07-12

申请号：US15852064

申请日：2017-12-22

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Holger MUELLER ,  Andreas SPRINGER ,  Uwe ZANK

IPC: B60R25/24

CPC classification number: B60R25/24 ,  G07C9/00

Abstract: The disclosure relates to a method and an apparatus to secure a system for passive unlocking of a vehicle system, particularly a vehicle unlocking system, against relay station attacks. The system comprises a vehicle-based device that can send on a first radio frequency and receive on a second radio frequency, and a driver-based device that can receive on the first radio frequency and send on the second radio frequency. The vehicle-based device and/or the driver-based device are also able to receive on a radio frequency that the other device can receive. One of the two devices send at least one ambient noise signal sequence to the other device. The ambient noise signal sequences received by both are compared with one another with cross-correlation. A current situation is deemed safe if the cross-correlation is strong and a phase shift is small.