Patent ID: 8330569

Claim:
A system for detecting data for training a trainable transmitter used to subsequently transmit a modulated RF signal having the detected data, the system comprising: an antenna; a capacitive detection circuit coupled to the antenna and configured to detect data provided in a control signal of a remote control transmitter used to remotely activate a device; and a control circuit coupled to the capacitive detection circuit and configured to store the detected data and to generate the RF signal having the detected data to be transmitted by the trainable transmitter to actuate the device; and wherein the trainable transmitter does not include an RF receiver and wherein the control signal of the remote control transmitter is normally used to remotely activate the device via remote RF transmission; wherein the control circuit is configured to reconstruct a data pattern to be transmitted to the device based on the detected data; wherein the control circuit is configured to analyze the duty cycle of the detected data to determine whether the detected data should be inverted as a part of the reconstruction of the data pattern to be transmitted to the device; wherein the control circuit is configured to compare the detected data to data patterns stored in memory of the control circuit; and wherein the control circuit is configured to adjust the polarity of the detected data as a part of the reconstruction of the data pattern based on the comparison of the detected data to the data patterns stored in memory of the control circuit; and wherein the capacitive detection circuit includes a plurality of sensing electrodes and wherein the control circuit scans the plurality of sensing electrodes in order to find a best control signal.