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Digital Television
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Digital Television

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  1. Digital Television

  2. Learning Objectives: By the end of this topic you should be able to: • discuss the range of services offered by digital television networks; • discuss the impact of these services on individuals, television companies and broadcasters; • individual = audience/viewer/subscriber • TV company = make the programmes • broadcaster = transmit the programmes

  3. Digital Television • Who is your TV provider? • How are the TV channels delivered to your TV set?

  4. Task: Visit these websites: • www.sky.com • www.virginmedia.com • www.freeview.co.uk • www.youview.co.uk • BT vision Make a note of: • how the channels are provided to the consumer • hardware, communications media • what features/facilities are available to the consumer

  5. Digital Television • usually supplied by satellite or cable operators in UK • satellite - BSkyB (Sky) • cable - Virgin Media • TV via Internet (IPTV) from some broadcasters (ISPs) • YouView - TalkTalk • BT Vision - BT • often subscription services • some ‘free to air’ services • via Freeview/Freesat • need decoder box (digibox) and viewing card • to decrypt signal • to authenticate user’s subscription

  6. Features of Digital Television • TV signal contains information about the transmission • programme details, start/end times • Electronic Program Guides (EPG) • what’s on now, next, later … • personal planner • record to disk (Sky+/V+) • interact with transmission • different camera views or commentary on sports events • voting during programmes (X-Factor, WWTBAM, ……) • programmes-on-demand • watch programmes at a convenient time • different start times for movies • choice of matches (Champions League, Wimbledon)

  7. Features of Digital Television • shopping channels & on-line store catalogues • Dixons, Argos … • multimedia display of products • make purchases directly and interactively • order pizza from a commercial (interactive advertising ) • book movie tickets during film review programme • take part in games with other on-line viewers • on-line gambling during live sporting events • Internet access • send e-mails via telephone line or cable • whilst watching TV & without having to use PC

  8. Learning Objectives: By the end of this topic you should be able to: • discuss the impact of these services on individuals, television companies and broadcasters; • individual = audience/viewer/subscriber • TV company = make the programmes • broadcaster = transmit the programmes

  9. Pay per View • viewers can pay to watch a particular programme • often sporting events or movies • available via Sky, Virgin Media • not available via Freeview • viewer can book the programme in advance or at the time of viewing • charge will be added to viewer’s next bill • charges vary: £5 - £15 per programme • on top of £20 - £50 monthly subscription

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  20. Voting • allows viewers to vote as part of participating in a television programme: • favourite performer in a competition • remove someone from a reality TV show • choose ending of a TV programme • can be made available in a number of ways: • dialling a telephone number or sending a text message • using a website • using the interactive feature of the set-top box

  21. Game show participation • TV games shows are very popular • allow viewers to take part (in real-time) by answering the questions along with contestants: • multiple-choice options • answer using the remote control for the set-top box • pressing coloured buttons • data sent via digibox telephone connection • answer via dedicated website using computer/Internet • SMS sent from mobile ‘phone

  22. Feedback comments to TV studio • viewers can interact with a TV programme • by feeding back comments on live shows. • viewer can send a text message • may be shown scrolling along the screen. • viewer may be able to ‘phone in to the show • their comments may be read out • may be able to talk on the show • emails can be sent • may be read out. • set top boxes could be used by viewers • to send a comment to the TV studio • make a choice via remote, wireless keyboard, …..

  23. Choosing Camera Angles • programmes allow viewer to select the camera angle • sport: director’s cut, behind the goal, ‘manager cam’ …. • reality TV show: choose room (or location) • can select game/court / hole to watch for a sporting event • Champions League football, Wimbledon tennis, Olympic games event, Ryder Cup golf ….

  24. Interactive Recording • can pause live TV • using set-top box & remote control • programme recorded to hard disk • programme resumes watching programme from hard disk • rather than watched live via TV • programmes can be recorded for later viewing • recording set manually or via multi-day EPG • ‘series link’ recording possible • no need to set each recording separately

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  35. Voting

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  42. Game show participation

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  47. Feedback comments to TV studio

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