Unifying scheduled and event-based content timing

Deal all,

I'd like to suggest a requirement for web-based signage.

While researching for 'context-aware interactive digital signage',
I'm wondering how digital signage system can integrate a determinate
scheduled playlist with dynamic contents which are triggered by external or
internal events, such as user interaction or ambient information.

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Use cases

[Unifying scheduled and event-based content timing]

Michael was assigned to arrange contents of an advertisement, consisting of
video clips, a myriad of still images and messages.
The advertiser wants to make the advertisement changeable and interactive
so that the signage displays a proper content to its viewers.
e.g, the signage displays a poster image if no one stares it, and displays
a video clip if anyone stares it or a user touches a video clip button.
Michael first scheduled determinate contents which are displayed in general
without external events.
He organized event-based contents and made scheduled and event-based
contents to fit together, to prevent any timing conflicts between them.

Motivation

One of major merits of digital signage over traditional printed signage is
reflecting user interaction. Digital signage can provide additional
information in response to user input.
If there is a scheduled content playlist which requires the signage to show
scheduled contents on time, the dynamic contents triggered by user input
should not bother the scheduled contents.

Gap analysis

In SMIL 3.0, there is a discussion of unifying event based and scheduled
timing for multimedia presentation.
To integrate interactive content into SMIL 3.0, SMIL 1.0 scheduler is
extended to support indeterminate timing and event-activation. See SMIL3.0
: http://www.w3.org/TR/SMIL3/smil-timing.html#q181
The issue is a little bit associated to R14, a kind of scheduling issue,
but it focuses on harmony of scheduled and event-based contents as one
signage service.
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I appreciate any comments or suggestions on the proposed issue.

Thanks.

Best regards,

Gisung Kim


-- 
Gisung Kim, Research Engineer / Ph.D

KAIST Institute for Information Technology Convergence
373-1 Kusong-dong, Yusong-gu
Daejeon 305-701, Republic of Korea.
Tel: +82-42-350-7137
Mobile: +82-10-9253-3843