Re: webtv-ISSUE-21: Time synchronisation

Hi,


Many thanks for the pointers into the UPnP specs. This is new  
functionality in the latest release?

Does this function enable a companion device to time its own presentation  
of content (eg. a web application showing a slideshow) to that of the UPnP  
device if the UPnP device is tuned to a broadcast service (for example)?  
In this scenario it would not be appropriate or necessarily feasible to  
achieve synchronisation by commanding the device to commence playback at a  
particular master clock time.

The clock synchronisation protocol is not itself a part of UPnP? In which  
case, perhaps an application would also need access to this service on the  
home network too?


regards


Matt

On Mon, 06 Jun 2011 09:47:51 +0100, Russell Berkoff  
<r.berkoff@sisa.samsung.com> wrote:

> Hello,
>
>
> The submitted test case is redundant with facilities available in UPnP.
>
>
> UPnP AV-4 provides Linked Content Metadata (Object Linking) as well as
> Precision Time Synchronization facilities. As previously mentioned in
> this forum, the current UPnP specifications are now available at no
> charge.
>
>
> Please refer to:
>
>
> http://www.upnp.org/specs/av/UPnP-av-ContentDirectory-v4-Service.pdf
>
>
> Appendix G: Content Authoring with Object Linking
>
>
> and
>
>
> http://www.upnp.org/specs/av/UPnP-av-AVTransport-v3-Service.pdf
>
>
> 2.4.25 SyncPlay()
>
>
> Regards,
>
> Russell Berkoff
>


-- 
| Matt Hammond
| Research Engineer, BBC R&D, Centre House, London
| http://www.bbc.co.uk/rd/

Received on Monday, 6 June 2011 09:49:48 UTC