Patent ID: 7269416

Claim:
A vehicle-based control system for use with a barrier operating system comprising a motor for opening and closing a barrier, a receiver in communication with the motor, and a remote transmitter for transmitting an activation signal, the activation signal comprising a radio frequency carrier signal modulated with a codeword, the activation signal for receipt by the receiver for use in activating the motor to open and close the barrier, the control system comprising: (a) a transceiver to be mounted in a vehicle and configured to (1) receive sampled versions of a plurality of radio frequency carrier signals, and (2) transmit an activation signal for receipt by the barrier operating system receiver; and (b) a controller to be mounted in a vehicle in communication with the transceiver and a user input device, the controller configured to (1) store the sampled versions of the plurality of radio frequency carrier signals in a digital radio frequency memory (DRFM), (2) receive user input identifying an activation scheme having at least a variable codeword format associated therewith, and (3) in response to the user input, (i) generate a variable codeword based on the identified activation scheme, (ii) select a radio frequency carrier signal corresponding to one of the sampled versions of the radio frequency carrier signals based on the identified activation scheme and transfer the sampled version of the selected radio frequency carrier signal from the DRFM to the transceiver, and (iii) control the transceiver to transmit an activation signal comprising the sampled version of the selected radio frequency carrier signal modulated with the generated variable codeword.