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An infrared interactive whiteboard is a large interactive display that connects to a computer and projector. The board is typically mounted to a wall or floor stand. Movement of the user's finger, pen, or other pointer over the image projected on the whiteboard is captured by its interference with infrared light at the surface of the whiteboard.
They are the most common form of instruction in historic and current learning spaces that are typified by the standard classroom model: space for 15 to 40 students and one instructor; a fixed teaching station or teaching wall with a writing or display surface composed of one or more blackboards or whiteboards; and students sitting at desks ...
These displays rarely have a resolution higher than 1920 × 1080 pixels, and so present the same amount of information as on a standard desktop display. With Powerwall displays, users can view the display from a distance and see an overview of the data (context), but can also move to within arm’s length and see data in great detail (focus).
The most simple example of video wall controller is single input multiple outputs scaler. It accepts one video input and splits the image into parts corresponding to displays in the video wall. [17] Most of professional video wall displays also have built-in controller (sometimes called an integrated video matrix processor or splitter).
The CAVE is a large theatre that sits in a larger room. The walls of the CAVE are made up of rear-projection screens, and the floor is made of a down-projection screen. High-resolution projectors display images on each of the screens by projecting the images onto mirrors which reflect the images onto the projection screens.
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