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1. (WO2009143415) POSITIONING METHOD FOR A REMOTE KEYLESS ENTRY SYSTEM
注意: このテキストは、OCR 処理によってテキスト化されたものです。法的な用途には PDF 版をご利用ください。

CLAIMS

We claim:

1. A remote keyless entry positioning method comprising: a) sending a signal from a fob to a first vehicle antenna; b) sending the signal from the fob to a second vehicle antenna spaced from the first vehicle antenna; and c) determining a position of the fob relative to a vehicle based on the signal received in said step (a) and the signal received in said step (b).

2. The method of claim 1 wherein the vehicle comprises the first vehicle antenna and the second vehicle antenna.

3. The method of claim 2 wherein the first vehicle antenna is located at a first end portion of the vehicle and the second vehicle antenna is located on an opposing second end portion of the vehicle.

4. The method of claim 1 wherein the determining comprises triangulating to determine the position.

5. The method of claim 1 including transmitting the position to the fob.

6. The method of claim 1 wherein the first vehicle antenna is spatially diverse from the second vehicle antenna.

7. The method of claim 1 including establishing a first distance between the first vehicle antenna and the fob based on the signal, establishing a second distance between the second vehicle antenna and the fob based on the signal, and triangulating to determine the position.

8. The method of claim 1 including determining an angle of the signal received by at least one of the first vehicle antenna or the second vehicle antenna, the angle relative to the vehicle.

9. The method of claim 8 wherein determining the position further includes using the angle.

10. A remote keyless entry locating method comprising: a) transmitting a first signal from a fob to a plurality of antennas on a vehicle; b) determining a first position of the fob relative to a vehicle; c) moving the fob to a second position different than the first position; d) transmitting a second signal from the fob to the plurality of antennas when the fob is in the second position; and e) determining a direction of fob movement from the first position to the second position.

11. The method of claim 10 wherein said step (e) comprises establishing a second position.

12. The method of claim 10 including transmitting the direction to the fob.

13. The method of claim 10 including determining the first position using a triangulation method.

14. The method of claim 10 wherein the direction of movement is a direction of movement relative to the vehicle.

15. The method of claim 10 wherein said step (b) comprises triangulating to determine the first position using a first distance between the fob and one of the plurality of antennas and a second distance between the fob and another one of the plurality of antennas.

16. A remote keyless entry locator system comprising: a transmitter configured to transmit a signal to a first vehicle antenna and a second vehicle antenna spaced from the first vehicle antenna; and a controller configured to determine a location of a fob relative to a vehicle, wherein the controller uses a first distance between the first vehicle antenna and the transmitter, and uses a second distance between the second vehicle antenna and the transmitter, to determine the location.

17. The remote keyless entry locator system of claim 16 wherein the controller uses a triangulation method to determine the location of the fob.

18. The remote keyless entry locator system of claim 16 wherein the controller uses an angle of the signal received by at least one of the first vehicle antenna or the second vehicle antenna to determine the location of the fob.

19. The remote keyless entry locator system of claim 18 wherein the angle is taken relative to the vehicle.