Augmented Reality (AR) as defined by Azuma  does not pose restrictions on output devices to be used for AR. Starting with light-weight notebooks and ultra mobile PCs, recently smartphones became favorite AR output devices. They represent a class of self contained computing units, providing (usually limited) computing power as well as input and output peripherals - all in one device. In contrast to that are output devices without a general computing processing unit which rely on external source to create and transfer image data. The latter are of interest in this work. In this chapter we present wireless technologies that can be used to transmit uncompressed stereoscopic video signals to wireless displays in real time. We introduce two output devices, a stereoscopic head mounted display (HMD) and a TFT display module. Both of them have been adapted to act as wireless receivers in order to display wirelessly streamed AR content. Next we focus on advantages of wireless displays for educational AR applications. By way of example two educational AR applications are presented which were used to demonstrate and test wireless displays. A number of teaching scenarios are described where teachers and students greatly benefit from the use of wireless displays. We briefly summarize the results of our observations while developing and evaluating these displays.
H. Kaufmann, M. Csisinko: "Wireless Displays in Educational Augmented Reality Applications"; in: "Handbook of Augmented Reality: Technologies and Applications", Springer, 2011, ISBN: 978-1-4614-0063-9, 157 - 175.
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