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Re: [presentation-api] 1-UA and 2-UA details

From: François Daoust via GitHub <sysbot+gh@w3.org>
Date: Fri, 21 Aug 2015 13:01:25 +0000
To: public-secondscreen@w3.org
Message-ID: <issue_comment.created-133420064-1440162084-sysbot+gh@w3.org>
The 1-UA and 2-UA possibilities are described in the spec 
introduction, except they are not given specific names there. Given 
that we keep referring to them as 1-UA and 2-UA in the group and 
elsewhere, it makes sense to mention these terms in the spec. One 
quick and easy fix would be to add something along the lines of 
"(commonly referred to as the 1-UA case)" next to the relevant bits.

For reference, the relevant bits are:

- **1-UA**: "For example, when a presentation display device is 
attached using HDMI or Miracast, the same UA that acts as the 
controller renders the presentation. Instead of displaying the 
presentation in another window on the same device, however, it can use
 whatever means the operating system provides for using the external 
presentation displays. In such a case, both the controller and 
presentation run on the same UA and the operating system is used to 
route the presentation display output to the presentation display."
- **2-UA**: "If the presentation display is able to render HTML 
documents and communicate with the controller, the controller does not
 need to render the presentation. In this case, the UA acts as a proxy
 that requests the presentation display to show and render the 
presentation itself."

See: http://w3c.github.io/presentation-api/#introduction

FWIW, the charter contains similar wording in the scope section as 

GitHub Notif of comment by tidoust
Received on Friday, 21 August 2015 13:01:26 UTC

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