System and method for determining a receiver threshold for a trainable transmitter system
A trainable transmitter includes a receiver circuit and a control circuit. The receiver circuit is configured to receive signals. The control circuit is coupled to the receiver circuit and is configured to determine a noise level for a frequency range of the receiver circuit. The control circuit is further configured to select and provide a receiver threshold to the receiver circuit. The receiver threshold is variable based on the noise level. The trainable transmitter may be integrated in a vehicle, in particular a vehicle interior element.
1 . A method for determining a receiver threshold for a trainable transmitter, the method comprising:
receiving a request to enter a training mode from a user;
determining a noise level for a frequency range of a receiver of the trainable transmitter; and
selecting a receiver threshold based on the noise level.
2 . A method according to claim 1 , wherein the noise level is an ambient RF noise level.
3 . A method according to claim 1 , wherein determining the noise level includes determining an average ambient RF noise level.
4 . A method according to claim 1 , further comprising providing the receiver threshold to the receiver of the trainable transmitter.
5 . A method according to claim 4 , wherein the receiver threshold is a threshold voltage signal.
6 . A method according to claim 1 , wherein the trainable transmitter is integrated in a vehicle.
7 . A method according to claim 6 , wherein the trainable transmitter is integrated in a vehicle interior element.
8 . A trainable transmitter comprising:
a receiver circuit configured to receive signals; and
a control circuit coupled to the receiver circuit and configured to determine a noise level for a frequency range of the receiver circuit and to select and provide a receiver threshold to the receiver circuit, the receiver threshold being variable based on the noise level.
9 . A trainable transmitter according to claim 8 , wherein the receiver threshold is a threshold voltage signal.
10 . A trainable transmitter according to claim 8 , wherein the noise level is an ambient RF noise level.
11 . A trainable transmitter according to claim 8 , wherein the control circuit is configured to determine an average ambient RF noise level for the frequency range of the receiver circuit.
12 . A trainable transmitter according to claim 8 , wherein the receiver circuit is included in a transceiver.
13 . A trainable transmitter according to claim 8 , further comprising:
a user input device coupled to the control circuit;
wherein the control circuit determines the noise level and selects a receiver threshold based on the noise level in response to actuation of the user input device.
14 . A trainable transmitter according to claim 8 , wherein the trainable transmitter is integrated in a vehicle.
15 . A trainable transmitter according to claim 14 , wherein the trainable transmitter is integrated in a vehicle interior element.
16 . A method for training a trainable transmitter, the method comprising:
receiving a request to enter a training mode from a user;
determining a noise level for a frequency range of a receiver of the trainable transmitter;
selecting a receiver threshold based on the noise level;
providing the receiver threshold to the receiver of the trainable transmitter; and
beginning the training mode of the trainable transmitter.
17 . A method according to claim 16 , wherein the noise level is an ambient RF noise level.
18 . A method according to claim 16 , wherein determining the noise level includes determining an average ambient RF noise level.
19 . A method according to claim 16 , wherein the training mode of the trainable transmitter comprises:
receiving a control signal from an original transmitter associated with a remote control system;
detecting a frequency and control data of the control signal; and
identifying a type of remote control system based on the frequency and control data of the control signal.
20 . A method according to claim 16 , wherein the trainable transmitter is integrated in a vehicle.