See apple datastream protocol.

A transport mechanism for interprocess communications between Apple Macintosh and Dec Vax minicomputers.

AppleTalk Data Stream Protocol

Advanced Digital Sync Processing(tm). Using sync processing to allow centering control (H-shift or V-shift) can create problems with some display devices because of the sync delay. This means the digital projector user may have to choose between a stable sync and centering control.

Adaptive Digital Signal Processing; exclusive to SGC, a DSP technology which processes the signal to eliminate unwanted noise and improve incoming signal

Automatic dataset protection. User data sets automatically defined to RACF.