Communication method for locating a parked vehicle
First Claim
1. A method for locating a vehicle from a remote nomadic device, comprising the steps of:
- providing a RF communication module and a RFID interrogator in the vehicle;
providing a RF transceiver, a RFID tag and an indicator in the nomadic device;
activating the RF transceiver of the nomadic device to transmit a location request to said communication module;
in response to receipt of the location request by the communication module, activating the RFID interrogator to interrogate said RFID tag and determine a location of said RFID tag relative to said vehicle;
activating the communication module to transmit a bearing to the RF transceiver of the nomadic device based on the determined relative location of said RFID tag; and
activating the indicator of said nomadic device to indicate said bearing.
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Accused Products
Abstract
A method of locating a parked vehicle that is equipped with a RKE system including a vehicle-installed RF communication module and a driver-borne wireless RF nomadic device such as a key fob involves installing a RFID tag in the nomadic device and a RFID interrogator in the vehicle. The driver depresses a button on the nomadic device to transmit a location request to the vehicle'"'"'s communication module, and the RFID interrogator in turn emits a RF interrogation signal to identify the RFID tag and determine its location relative to the vehicle. The communication module then transmits a compass bearing to the nomadic device, and an indicator of the nomadic device is activated to provide the driver with a bearing for locating the vehicle.
33 Citations
6 Claims
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1. A method for locating a vehicle from a remote nomadic device, comprising the steps of:
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providing a RF communication module and a RFID interrogator in the vehicle; providing a RF transceiver, a RFID tag and an indicator in the nomadic device; activating the RF transceiver of the nomadic device to transmit a location request to said communication module; in response to receipt of the location request by the communication module, activating the RFID interrogator to interrogate said RFID tag and determine a location of said RFID tag relative to said vehicle; activating the communication module to transmit a bearing to the RF transceiver of the nomadic device based on the determined relative location of said RFID tag; and activating the indicator of said nomadic device to indicate said bearing. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification