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WIRELESS COMMUNICATION SYSTEM FOR VEHICLE

  • US 20120062361A1
  • Filed: 08/18/2011
  • Published: 03/15/2012
  • Est. Priority Date: 09/09/2010
  • Status: Active Grant
First Claim
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1. A wireless communication system for a vehicle for locking or unlocking a vehicle door, the system comprising:

  • a portable device having a manually operable switch and a portable device rolling code, wherein, each time the switch is turned on, the portable device updates the portable device rolling code and transmits a wireless signal including the portable device rolling code;

    a vehicle-mounted device having a receiver and a vehicle rolling code, wherein, when the wireless signal is received through the receiver, the vehicle-mounted device compares the portable device rolling code included in the wireless signal with the vehicle rolling code, authenticates the portable device based on a comparison result, and locks or unlocks the vehicle door if the portable device is authenticated; and

    a control section mounted in the vehicle-mounted device, the control section controlling locking or unlocking of the vehicle door,wherein, when the control section receives the wireless signal through the receiver, the control section determines whether the most recent locking or unlocking of the vehicle door has been accomplished using a mechanical key and, if it is determined that the most recent locking or unlocking of the vehicle door has been carried out using the mechanical key, the control section locks or unlocks the vehicle door if a specific manipulation of the switch is detected.

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