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Name, organization and contact details
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Name: Keiji Yanagi
Organization: TOKYO BROADCASTING SYSTEM TELEVISION, INC.
E-mail: yanagi.keiji.tbs@gmail.com

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Participant’s interest
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As of November, 2010, the number of household television sets in use
is already exceeds 97 million in Japan. Since almost all digital TV
sets have browser capability (based on XHTML1.1), a universal service
using browsers on TV is getting more and more viable all over the
land. Now digital TVs are taking the center of digital home networks,
and it is expected that they will be used not only as a receiver for
digital broadcasting but also as a central server for variety of
entertainment and essential information for everyday life. Also it is
strongly desired that TV sets will be better integrated with Web
technologies, e.g., HTML5 and get even richer presentation capability.

We believe our knowledge and expertise on digital TV broadcasting
technology in Japan should be useful to this workshop and we should be
able to provide various use cases based on our long-term experience.
We are very interested in what kind of roles our expertise on digital
broadcasting would play in the context of Web standardization.


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Point of View
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1. Essential APIs for realizing Web and TV services with broadcasting
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W3C already has several specifications regarding APIs to treat
audio-visual resources on the Web, e.g. HTML5 video tag, Media
annotations, Media fragments and so on. But from the perspective of
broadcasting, they seem to lack some essential APIs for realizing Web
and TV services with broadcasting, especially APIs to treat dynamic
aspect of broadcasting signals.

For example,

- URIs for resources in MPEG2 transport stream;
- Event model for synchronization of browser's behavior with the
  change of the state of TV programs.


2. TV and publicness
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In case of natural disasters, usual infrastructures for communications
like telephones and mobile phones might not be available. So
providing disaster information is one of the very important roles
of broadcasting as a public service. 


Although we decided not to make a presentation in the workshop, we
believe that our cooperation with participants from many other
countries and industries will make the workshop more fruitful.