Filter
Top Products
96 | NAVISET ADMINISTRATOR 2 USER’S GUIDE
Proof of Play
Some NEC large-screen display models have the ability to detect and record to an internal event log, any changes
which have an affect on the audio or visual content being presented such as a change in video or audio input, or loss
of video or audio signal, or a detectable internal failure. This event log provides verication and reassurance that the
display was powered on and correctly showing a particular video input at a particular time. This feature is called Proof
of Play.
Note: Not all large-screen displays support Proof of Play. See the README les for details. For the operations described in this
section to be enabled at least one device that supports Proof of Play must exist in the device tree.
Whenever one of these changes occurs it is saved within the device along with the date and time and a number of other
status parameters. Collectively, this is referred to as a Proof of Play Event.
Note: Each event is time stamped using the display’s internal Real Time Clock (RTC), allowing direct comparisons to be made
with media playlists, and other events. So it is important to make sure that the RTC is set correct. This can be done via a Task
described in “Sync Clock with System Date/Time” on page 73.
Because the display itself creates a log for each internal event that occurs, it is not necessary to continuously poll each
display in order to try and detect an event as it occurs. The log in each display can be read at much larger intervals –
thus reducing the network burden.
A Proof of Play Event consists of the following data:
Status Parameter/Setting Examples
Date/Time 3/30/2015 9:17:05 AM
Video Input DVI, HDMI1
Video Resolution 1920x1080, 1280x720
Video Signal OK, No Signal
Video Status OK, Circuit Failure
Audio Input HDMI1, HDMI2
Audio Signal OK, No Signal
Audio Status OK, Circuit Failure
NaViSet Administrator provides a special built-in task for managing Proof of Play operations and tools for viewing and
exporting Proof of Play Events.