Patent ID: 9443422
Filing Date: 2016-09-13
CPC Classification: G08C

Claim Text:
1. A method for modifying a trained carrier frequency for a trainable transmitter comprising: receiving a request to transmit a control signal from the trainable transmitter to a receiver, the request being generated in response to an activation of a user input; transmitting a first control signal using the trained carrier frequency and a control data; shifting at least part of the trained carrier frequency by a first frequency increment; transmitting a second control signal using the trained carrier frequency shifted by the first frequency increment and the control data; shifting at least part of the trained carrier frequency by a first frequency decrement; transmitting a third control signal using the trained carrier frequency shifted by the first frequency decrement and the control data; determining whether the user input is still activated; shifting at least part of the trained carrier frequency by a second frequency increment, wherein the second frequency increment is greater than the first frequency increment; transmitting a fourth control signal using the trained carrier frequency shifted by the second frequency increment and the control data; shifting at least part of the trained carrier frequency by a second frequency decrement, wherein the second frequency decrement is greater than the first frequency decrement; and transmitting a fifth control signal using the trained carrier frequency shifted by the second frequency decrement and the control data.