In radio communications, a forward link is the link from a fixed location (e.g., a base station[?]) to a mobile user. If the link includes a communications relay satellite, the forward link will consist of both an uplink (base station to satellite) and a downlink (satellite to mobile user).
... rights management" and "copy protection" systems:
Serial copy management system[?] (SCMS)
Macrovision
iTunes
Windows media player[?]
DRM and documen ...