W3C Device Independence Working Group

Introduction for DIAT Workshop

25 September 2002

Background

• Mobile IG, TV and the Web IG, Voice WG
• October 2000 - Workshop on Device Independent Authoring
• February 2001 - Device Independence Activity created
• September 2001 - Device Independence Principles working draft published
• February 2002 - Workshop on Delivery Context
• July 2002 - Authoring Scenarios document made public
• September 2002 - Delivery Context Overview document made public
• September 2002 - Workshop on Device Independence Authoring Techniques

DIWG Mission

The mission of this Working Group is to study issues related to authoring, adaptation and presentation of Web content and applications that can be delivered effectively through different access mechanisms.

DIWG Mission (cont.)

In particular the Working Group will:

• collect requirements for Web access via various kinds of presentation device
• review related specifications within and outside of W3C
• provide use cases and requirements to related activities within W3C
• describe techniques which allow authors to better manage device dependencies
• in some specific areas not covered by other groups, to propose recommendations that will lead to enhanced device independence.

DIWG Charter (June 2002 - May 2004)

• Sets out a number of work items
• Delivery context
  • Delivery context overview
  • Core device attributes
  • CC/PP protocol
• Device independent authoring
  • Authoring scenarios
  • Authoring techniques (including this workshop)
  • Interaction markup
  • Document profile
• Reviewing
  • Respond to review requests
  • Review external standards

Authoring Scenarios

Public informal draft: http://www.w3.org/2001/di/public/as/

Abstract:

The document provides a discussion of several scenarios that web site authors commonly face when making content and applications available to users with devices of various capabilities The document examines the effects on authors and the implications for authoring techniques that assist in the preparation of sites that can support a wide variety of devices.

Authoring Techniques

• describe how authors use current markup and adaptation techniques to deliver to different devices
• show how separation between content and its presentation on different devices can be achieved
• cover approaches that include adaptation on the client, the origin server and at intermediaries
• give examples based on existing markup and adaptation techniques
• point out where current approaches do not address all the goals