Digital TV business glossary & terms

The glossary below clarifies abbrevitions and terms you might come across when you are getting familiar with digital TV business (e.g. DVB, OTT, VOD, HbbTV, Smart TV; see below).

Hopefully you’ll find this glossary beneficial!


ASO

Analog switch-off; switching from analog transmission to digital


Catch-up

Feature that enables end-user to watch e.g. previous series episodes (via IP)


DASH

Dynamic Adaptive Streaming over HTTP;  an adaptive bitrate streaming technique that enables high quality streaming of media content over the internet using HTTP


DSM-CC

Digital Storage Media Command and Control; toolkit for developing control channels associated with MPEG streams, enables e.g. interactive commercials


DTT/DTTV

Digital Terrestrial Television; specific abbreviation for digitalized terrestrial TV


DVB

Digital Video Broadcasting; international open standard for digital transmissions. DVB standards


EPG

Electronic Program Guide; an application to show information (e.g. title, description, rating) of broadcasted programs or other video assets OR sometimes meaning also the actual TV program or video asset metadata


FTA

Free-to-air; free/clear (no cost) channels available to everyone (versus encrypted)


HbbTV

Hybrid Broadcast Broadband TV; standard for interactive services on top of DVB. HbbTV 2.0.2 Specification
Read more about HbbTV


HD(TV)

High Definition (Television); screen resolution from 1280x720p up to 1920x1080p


IP

Internet Protocol; the principal  protocol by which data is sent from one computer to another on the Internet


ITV / iTV

Interactive TV; data services added to television using IP and thus making it interactive


MPEG

Moving Picture Experts Group; literally means a group of authorities, but usually referring to compression formats used in digital TV: MPEG-1, MPEG-2, MPEG-4 AVC etc.


OTT

Over-the-top; a platform or application to provide set of TV and video services (VOD, start-over etc.) over IP, also to “companion screens” (tablets, mobile phones)


PSI/SI

Program Specific Information/Service Information; crucial data and metadata for digital transmissions. Specification for Service Information (SI) in DVB systems


PVR

Personal Video Recorder; a type of STB that allows recording of TV programs. Presence of scheduled EPG data is essential with this


SD(TV)

Standard Definition (Television); screen resolution from 704×480 up to 720×576


Smart TV

A modern digital TV including several in-build applications, including a browser and normally having also HbbTV support


SSU

System software update; method to update STB/Smart TV system software via broadcast


Start-over

Feature that provides a way to start ongoing broadcast program from beginning (via IP)


STB

Set-top box; Integrated digital receiver


TS

(MPEG) Transport Stream (also known as multiplex); comprised of video, audio and data/metadata, contains several TV/radio programs


UHD

Ultra-high Definition TV (also known as 4K UHD); screen resolution 3840×2160


VOD

Video on Demand; service for providing wide variety of video material (series, movies) to end-users, letting them to decide when to watch. Subscription often required


Sources: www.dvb.org, www.wikipedia.org and www.hbbtv.org)