The remote control comprises: a microprocessor including a CPU and a memory; a keyboard including a set of keys including one or more MACRO keys coupled to the microprocessor; lamp driver circuitry coupled to the microprocessor; circuitry for generating IR signals coupled to the IR lamp driver circuitry;...http://www.google.com/patents/US5414426?utm_source=gb-gplus-sharePatent US5414426 - Favorite key macro command and chained macro command in a remote control
