Multicasting - The option to multicast was made possible by digital technology to allow each digital broadcast station to split its bit stream into 2, 3, 4 or more individual channels of programming and/or data services. (For example, on channel 7, you could watch 7-1, 7-2, 7-3 or 7-4.)
CRTC - Canadian Radio-television and Telecommunications Commission, the federal regulatory body for television programming and broadcasting in Canada.
Datacasting - Also known as "enhanced TV." Datacasting is the act of providing enhanced options offered with some digital programming to provide additional program material or non-program related resources. This allows viewers the ability to download data (video, audio, text, graphics, maps, services, etc.) to specially equipped computers, cache boxes, set-top boxes, or DTV receivers.
Metadata - Informational data about the data, included in a signal's data stream.
A/D - Electronic device that connects an analog television signal to a digital system.
Comb filter - A circuit in NTSC sets that separates the color information from the brightness information.
Set-top Converter Box - This unit sits on top of the viewer's analog TV, receives the Digital TV signal, converts it to an analog signal, and then sends that signal on to the analog TV.
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