System and method for training a trainable transmitter

A trainable transmitter, comprising:

• a receiver configured to receive signals;
• and
• a control circuit coupled to the receiver and configured to:
• receive a control signal from an original transmitter via the receiver,
• detect a frequency and control data of the control signal,
• determine if the control signal is a fixed code signal or a rolling code signal and if the control signal is a fixed code signal,
• store the detected frequency and control data and, only if the control signal is a rolling code signal, compare the detected control signal frequency to a plurality of predetermined frequencies and based on the comparison, shift the detected frequency to match one of the predetermined frequencies.

A trainable transmitter, comprising:

• a receiver configured to receive signals;
• and
• a control circuit coupled to the receiver and configured to:
• receive a control signal from an original transmitter via the receiver,
• detect a frequency and control data of the control signal,
• determine if the control signal is a fixed code signal or a rolling code signal and if the control signal is a fixed code signal,
• store the detected frequency and control data and, only if the control signal is a rolling code signal, compare the detected control signal frequency to a plurality of predetermined frequencies and based on the comparison, shift the detected frequency to match one of the predetermined frequencies, and
• generate a control signal in response to an actuation of an input device, the control signal including the control data and the detected frequency or the shifted frequency.