User guide

VNR 100 • Introduction 6
Definitions
PURE3 — PURE3 is specifically designed for network transmission of real time media (such
as video or graphics, audio, data, and whiteboard elements). It features both spatial and
temporal image compression, which allows for efficient bandwidth usage and eliminates the
need for forward error correction.
• PURE3 streams always contain video or graphic elements.
• PURE3 streams may contain audio, data, and whiteboard elements that are associated
with the video and graphic elements.
Streaming media (stream) — This term refers to multimedia that is constantly received
by (and normally presented to) an end-user while being delivered by a streaming provider.
Internet television is a commonly streamed medium. Streaming media (stream) in this guide
refers to a PURE3 media stream that is produced by a VN-Matrix encoding device.
Element — This term refers to the video, graphics, audio, (user) data, and whiteboard
(annotation data) content that is contained within a stream.
Device license — This term refers to the number of licensed features that are available on
a device within a VN-Matrix system. All devices contain a default license that offers a default
level of functionality. See the VNM Enterprise Controller User Guide (at www.extron.com)
for information about device licenses.
Controller license — This term refers to the license that is supplied to the VNM Enterprise
Controller. See the VNM Enterprise Controller User Guide for information about device
licenses.
(User) Data — This refers to the transfer of user data between an encoder and a decoder.
User data is created at the encoder, placed into the PURE3 stream, and sent to the
decoder. The data is received in the same form that it was transmitted. This method of data
transfer is unidirectional and can only be sent from an encoder to a decoder.
Whiteboard (wb) data — Also known as annotation data, whiteboard data outputs text
and simple pointer annotation onto local displays that are connected to VN-Matrix encoders
or decoders. This type of data is bidirectional, which allows a decoder to send whiteboard
data to an encoder.