Dual range vehicle remote
First Claim
1. A method of operating a controller of a remote keyless entry system in a vehicle comprising the steps of:
- (a) receiving a desired type of radio frequency signal;
(b) actuating a high gain mode of a receiver of the controller;
(c) detecting a message from an acceptable remote keyless entry transmitter;
(d) decoding a function code portion of the message;
(e) changing the receiver from the high gain mode to a lower gain mode if the function code is not a long distance function;
(f) decoding a remaining portion of the message;
(g) determining if the remaining portion of the message was decoded properly; and
(h) performing the requested function if the remaining portion of the message was decoded properly.
9 Assignments
0 Petitions
Accused Products
Abstract
A method and system are disclosed for operating a controller of and a RKE system to provide for short distance functions that are actuatable from a key fob at a shorter distance from the vehicle than other long distance functions. This may include receiving a desired type of radio frequency signal; actuating a high gain mode of a receiver of the controller; detecting a message from an acceptable remote keyless entry transmitter; decoding a function code portion of the message; changing the receiver from the high gain mode to a lower gain mode if the function code is not a long distance function; decoding a remaining portion of the message; determining if the remaining portion of the message was decoded properly; and performing the requested function if the remaining portion of the message was decoded properly.
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Citations
20 Claims
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1. A method of operating a controller of a remote keyless entry system in a vehicle comprising the steps of:
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(a) receiving a desired type of radio frequency signal;
(b) actuating a high gain mode of a receiver of the controller;
(c) detecting a message from an acceptable remote keyless entry transmitter;
(d) decoding a function code portion of the message;
(e) changing the receiver from the high gain mode to a lower gain mode if the function code is not a long distance function;
(f) decoding a remaining portion of the message;
(g) determining if the remaining portion of the message was decoded properly; and
(h) performing the requested function if the remaining portion of the message was decoded properly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of determining whether to perform a remotely requested vehicle function transmitted via an RF signal from a remote transmitter to a vehicle, the method comprising the steps of:
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(a) actuating a button on the remote transmitter within a predetermined distance from the vehicle to cause the transmission of the RF signal, with the RF signal having a preamble portion and a message portion;
(b) receiving the RF signal with a RKE system in the vehicle;
(c) actuating a high gain mode of the RKE system;
(d) determining whether the remotely requested vehicle function in the message portion is a short distance function;
(e) changing the receiver to a lower gain mode if the remotely requested vehicle function is the short distance function;
(f) decoding a remaining portion of the message portion; and
(g) performing the remotely requested vehicle function if the remaining portion of the message portion is decoded properly. - View Dependent Claims (10, 11, 12, 13)
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14. A dual range vehicle remote comprising:
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a key fob including a plurality of buttons, each adapted for indicating a desired remote function, and a transmitter capable of transmitting a signal having a message portion indicative of the desired function when one of the plurality of buttons is actuated; and
a RKE system including a receiver capable of receiving the signal, and a controller for setting the RKE system in high gain mode, determining if the desired function in the message portion is a short distance function, changing the RKE system to a lower gain mode if the desired function is a short distance function, decoding a remaining portion of the message portion, and performing the desired function if the remaining portion of the message portion is decoded properly. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification