CHAPTER 1.17 Data Broadcasting Standards and Practices for Television

MICHAEL DOLAN

Television Broadcast Technology, Inc. Del Mar, California

INTRODUCTION

Data broadcasting has, in the past, generally referred to the transmission of any information, carried along with the video or audio signal that is not the video or audio content itself. The classic example of"data" associated with radio is the radio data system (RDS), and with television, it is closed captioning. In analog television, data has also often been used to refer to anything encoded in the horizontal or vertical blanking interval (VBI) of the video signal, including what we today recognize more formally as metadata.

More commonly today, there is a distinction drawn between metadata ...

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