The part of a digital video signal that is sent between each video frame. This non-viewable section of the signal is used to transmit data such as electronic program guides and closed-caption content.
Figure 1. Ancillary data packet structure for the 4:2:2 525/59.94 format. Click here to see an enlarged diagram. Audio and video data are captured and processed separately for delivery to the end user ...
The successful generation, transmission and reproduction of a televised scene requires a tightly controlled synchronization between the studio color camera and the TV receiver triple gun picture tube.