STB

from The Free On-line Dictionary of Computing (8 July 2008)

set-top box
STB

   <communications, networking> (STB) Any electronic device
   designed to produce output on a conventional televesion set
   (on top of which it nominally sits) and connected to some
   other communications channels such as telephone, {ISDN},
   {optical fibre} or cable.  The STB usually runs software to
   allow the user to interact with the programmes shown on the
   television in some way.

   {Online Media} are one STB manufacturer.

   (1997-05-16)