A virtual machine has a first upper level script, a second upper level script, and common block of script. The first and second scripts and the common block of script are interpreted by an interpreter of the virtual machine. The common block of script may, for example, be a script that encodes data bits in accordance with a remote control device communication protocol. The first script may include information for outputting first data bits (for example, key data). The second script may include information for outputting second data bits (for example, key data). The first script calls the common script, thereby outputting the first data in accordance with the protocol. The second script also calls the common script, thereby outputting the second data in accordance with the same protocol. Use of the common script in the outputting of the first and second data reduces memory requirements and therefore system cost.