US Patent 6956460 Transmitter for operating rolling code receivers

A fixed transmitter for operating a rolling code receiver is disclosed. A set of fixed codes is captured from a rolling code transmitter that is used to actuate a corresponding rolling code receiver. The set of fixed codes is stored in a memory of a fixed code transmitter. The fixed code transmitter, upon each actuation, transmits one or more codes of the set of fixed codes to operate the rolling code receiver. The set of stored fixed codes in the fixed code transmitter has fewer codes than a total number of unique codes that can be generated by the rolling code receiver.