November 2012
Intermediate to advanced
1034 pages
53h 38m
English
Content preview from Broadcast Engineer's Reference Book
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Michael A DolanTelevision Broadcast Technology, Inc.
2.13 Data Broadcast
Data broadcast has generally referred to any information carried along with the video or audio signal that is not the video or audio coding itself. The classic example of ‘data’ associated with television is teletext.1 However, there is other information that falls into this category, including subtitling and captioning. ‘Data’ is often also generally used to refer to literally anything encoded in the Vertical Blanking Interval (VBI) of the analogue television signal, including what we today recognise more formally as metadata.
More commonly today, there is a distinction drawn between metadata (information about the video and audio) and data ‘essence’.2 The latter refers ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.