On the right hand side we have the video. This video analog to digital converter accepts the analog stream from some analog source, such as a camera and digitizes it to Blackfin’s side. This analog video converter is known as a decoder, a video decoder. Similarly on the display side, we have a video D to A, or a video encoder, that accepts the digital stream from the Blackfin and converts it to analog form for display. Like on a CRT.