CS344 Interaction Design Lab

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					CHI 2006 Special Interest Group

Mobile iTV:
new challenges for the design of
pervasive multimedia systems

                          Dr. Anxo Cereijo Roibàs
                                    David Geerts
 Presentation of the SIG goals and topics (10
 Introduction of participants (10 mins)
 Interactive debate with participants on the
 research topics introduced (50 mins)
 Summary of the topics and discussion on
 future actions and how to create a common
 background in this area among those
 interested (20 mins)
SIG topics
  Novel sociability issues for cross-media applications
  Incoming usability challenges and future interaction
  design issues such as new interfaces, interaction
  modalities and forms of smart content
  New paradigms in context awareness in intelligent
  environments beyond the traditional taxonomy of
  Controversial evolutions and trends such as a
  potential 'utterly controlled society’ and cross-media
  applications in nano and biotechnology
  Original contributions from diverse disciplines (art,
  design, sociology, anthropology, biology, etc)
What is Mobile & Pervasive iTV?
Users’ adoption of powerful handhelds with
   multimedia features, together with an increasing
   interoperability between platforms, is resulting in
   expanding the iTV consumption beyond the
   domestic context.

We can define this convergence of multimedia
   systems in different platforms as ‘pervasive TV’.
Technological trends
 diffusion of powerful handhelds with
 multimedia features

 increasing interoperability between
 platforms, communications are
 going pervasive.

 swap from one-to-one to one-to-
 many connectivity (network,
 Bluetooth, infrared…)

 development of context-aware

 evolution towards novel forms of

 Exploration of advanced ways of
Mobile iTV Workshop results:
New challenges in Mobile iTV
  Exploring new genres
      Self-authored content
      Smart and highly interactive content
      Co-creation and participation
      Supporting social interaction
      Beyond usability
  Novel interaction paradigms
      Immersive environments
      Gestures
      …
  Personal and social context awareness
      Intelligent environments
      Work – home – on the move
      PC – TV – Mobile – In Car Navigator – new devices (wearables,
       home appliances - …)
SIG discussion notes
Topics raised by participants
  What is (interactive) television?
  Will interactivity on mobile phones be a success?
  Content ownership / co-creation
  Personalization / context awareness
  Cultural differences
  Change in types of content
  Internet broadcast
  Older people and iTV interfaces
  Collaborative content creation/consumption
  Blurring between games and TV
  Social control / sociability
What is (interactive) television?
  People don’t want to only watch broadcasts, but also self-authored content, share with
  Tv is just the display with computer behind it – broadcast is old-fashioned, one-way
  Technical formats / content (MPEG2: streaming – MPEG4: real interactivity at local side)
  Broadcast as transport mechanism / IP on all kinds of devices
  TV has a powerful connotation: good quality – easy to use – no productivity – lean back
  No connection problems, reliable, no computer
  TV traditionally huge audiences / iTV has niche audiences, users  interactive tv services
  (voting, vod, …) – content/service providers instead of broadcasters
  Mobile iTV services instead of Mobile iTV
  The word television is a strength – lowers the barrier for older people and to try out
  something new
  Mobile – what is it on a mobile device? Inherently different than in the home?
  Passivity – not activity: conflict. Do we make television interactive? Strong desire not to
  interact with television.
  5% interactivity / 95% not – not everyone has to be active
  Contestants choose suitcase with money – people at home can vote with mobile phones – 8
  million viewers
  Same information on mobile when you don’t have a tv
  Whole production process – you look at the content that others have made
  Advertisers have a stake in this as well
  Program via the pc remotely, when you get home you can lean back
  Interactivity as social interactivity, not UI interactivity
Personalization / context
  Making a video on a specific location at specific time  link this with
  Smarter mobile devices – like TiVO / automatic volume reduction / …
  More memory and power when watching video / traffic cams / … 
  Small screen, want to watch mobile television?
  Lots of technological solutions already for problems raised – costs
  Type of content, size of display, … - lousy content is the problem
  Not watching movies, but killing time – different end-user needs
  Also getting information when something’s going on / real-time events –
  videos are made on the spot and distributed – bottom-up
Cultural differences
  Korea – attached to mobile devices, want tv-content – tv in the car
  Maybe not appropriate in North-America, but it is in Asia
  Even difference between Spain and UK
  Majority of people watch mobile tv at home (e.g. bathroom) – take it shopping to
  keep children quiet – at the workplace  lot of different situations: listen to
  results of trials
  Short span across different cultures?
  Personal space when commuting – in western countries, don’t want to interact
  with other people
  From big tvs to small devices  culturally dependent? – but SMS was not only
  big success in Asia, also in Europe and America
  Mobile phone success not predicted
  Abilities of mobile phones for making video will change the industry
  Also different user groups  e.g. adults vs. Children
  Generation: going out, playing mobile games, small devices
  No standard navigation paradigm for mobile interactive television

  The future: disappearing interfaces – media wherever you are in appropriate
  fashion, based on devices
Change in types of content
  Who creates the content, what kind of screen, what kind of users?
  Smaller segments for shorter attention times
  New services and applications – when a goal is made, a short clip is sent to mobile phone
  Motivation is important – even if it is less than optimal
  Do I want television on my mobile? – information, entertainment? Different kinds of content
  at different times
  TV consumption is changing – possible that children will use this in the schoolyard
  Support in mobile phone for tv-creation
  TiVO services on the mobile phone – get information immediately – when and how i want it
  Video blogs – broadcast site  beginning of a new culture from podcasts and blogs to video
  From broadcast of traditional television to personal vlogs and shared editing  1 to 1  1 to
  DVB-H - media FLO
  New paradigms in video sharing and creation – revenue generation for broadcasters? 
  business models for personal video sharing?
  iTV in the states  cable providers > youtube, making content themselves / time shifting /
  TiVO – cable providers are roadblock / resistance to great ideas
  Some content providers put content on the web – with commercials
  Video snippets in Mobiles include ads – using traditional revenue models
  Things are changing, they have tom come up with new business models – people are
  skipping! Preventing fast forwarding
  New ad formats to captivate people? But failed trials ten years ago? Now more interactivity,
  more mobility  changed.
  Targeted advertisement on specialty channels  more direct advertisement
Workshop and SIG website
For SIG and Workshop results, see: