2 Terms and Definition
Auxiliary Screen or Aux: A specific Screen composed of a single output with a format up to 4K@60. The
content displayed can be an input or Screen’s Program.
Background Image: Image source ready to be used in a Background Set. Each Screen has four Background
Image slots.
Background Layer: Screen layer with lowest priority that can display a Background Set.
Background Set: A source content created for a Screen background layer. A Background Set is made by
assigning a Background Image or live input in every output of a Screen.
Foreground Image: Image source ready to be used in a Foreground layer. Each Screen has four Foreground
Image slots.
Foreground Layer: Resizable Screen layer with highest priority that can display a Foreground Image.
Image: Englobes all non-animated images. Images are imported through the Web RCS and used as content
in layers.
Keying: Electronic process where a video image is electronically superimposed over another source by
dynamically removing a portion of the first image. For example, removing all content of a certain color (such
as green or blue) is called Chroma Key and removing content based on its luminance levels is called Luma
Key. Keying is typically used for titles, logos and special effects.
Layer: Item displaying one live input. Layers can overlap, depending on their visual priority. Layers can be
repositioned, resized, displayed with borders, etc.
Multiviewer: Dedicated output used to monitor content in widgets. Midra™ 4K units have one Multiviewer
output able to display up to 16 widgets.
Preview (PRW): The content in Preview is not displayed on output Screens. All Preview screens replace their
corresponding Program screens during transition (or Take). Preview Screens are meant to load layers and
content before transitioning to Program.
Program (PGM): The content in Program shows what is currently displayed on Screens. It is possible to make
changes directly in the Program screens (drag and drop content in layers, layer size and position, etc.). It is
also possible to lock the Program screens to only edit the Preview screens.
Screen: Destination where the picture will be displayed. For example, a single display or a projection surface
which can be composed of one or multiple outputs. Each screen is composed of one or multiple layers.
Soft edge blending: Technology used to compensate for the covering area when two (or more) video
projectors are combined to display a continuous content across one screen. The resulting image will appear
as a single unified picture.
Web RCS: User interface to setup and operate the Midra™ 4K. It is a web browser based Remote Control
Software designed by Analog Way.
Widget: Multiviewer item displaying one content (Input, Timer, Preview or Program Screen). Similar to a
Layer but without visual priority, widgets are displayed on same level and cannot overlap.
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