Patent ID: 7679490
Filing Date: 2010-03-16
Classification: B60R,G07C

Abstract:
1. A method for harmonizing a motor vehicle's status information between at least two ID transmitters of a vehicle-accessing device, comprising: transmitting the current vehicle stains, together with a current reference time, corresponding to the current vehicle status, of a reference timing element of a vehicle-side control unit by said control unit via at least one radio transceiver unit for receipt by any of a plurality of mobile ID transmitters within radio range of the transceiver unit; a first mobile ID transmitter capable of receiving transmissions from the radio transceiver unit and within range of the radio transceiver unit receiving and storing the current vehicle status and current reference time; a second mobile ID transmitter capable of receiving transmissions from the radio transceiver unit but not within range of the radio transceiver unit not receiving the current vehicle status and current reference time, the second mobile ID transmitter storing a previous vehicle status and a previous reference time; and the first and second mobile ID transmitters subsequently synchronizing vehicle status data by radio transmissions, including: