Update UTC time using TDT and/or TOT

UpdateTime.wsd

<div class="wsd" wsd_style="vs2010"><pre>
title Update Time

participant irisplayer
participant app

note left of irisplayer: receive the TDT and/or TOT tables

alt TOT exists

note right of irisplayer: parse TOT and get UTC and local time offset


alt received UTC - current UTC in [5,10]

note right of irisplayer: update UTC

irisplayer -> app: UTC updated

else received UTC - current UTC NOT in [5,10] 

note right of irisplayer: don't update UTC

end

irisplayer -> app: local time offset

note right of app: set local time offset and store in persistent storage
 
else TOT does't exist

note right of irisplayer: parse TDT and get UTC


alt received UTC - current UTC in [5,10]

note right of irisplayer: update UTC

irisplayer -> app: UTC updated

else received UTC - current UTC NOT in [5,10] 

note right of irisplayer: don't update UTC

end

irisplayer -> app: Not valid value for local time offset

note right of app: the local time offset is set by the application by prompting the user.

end
</pre></div><script type="text/javascript" src="http://www.websequencediagrams.com/service.js"></script>