A multi-commander includes a first memory for storing a plurality of remote control signals having different signal formats, a circuit for receiving a remote control signal from another remote commander, a rewritable second memory, a remote control signal transmitting circuit for transmitting a remote...http://www.google.ca/patents/US4999622?utm_source=gb-gplus-sharePatent US4999622 - Remote commander having a ROM read-out pre-programmed codes therefrom
