Abstract

Audio-visual systems encompass scores of different types of equipment and material, multiple technical standards, and rapidly changing technologies. Despite the complexity, and in many ways because of the complexity, smart building technology (standard structured cable system, Ethernet connections, and IP protocols) is taking hold in audio-visual systems. This includes digitizing the traditional analog audio and video signals and more importantly, using the technology of data networks to control and manage audio-visual systems. The core components of these audio-visual systems include audio and visual sources, processing and management, destinations (speakers and displays), and system control. The visual part of an audio-visual system also has several sources including cameras, VCRs, DVDs, VTRs, DVTRs, cable television, satellite television, broadcast/cable/satellite, document cameras, personal computers, and data networks. A video control system has to simultaneously manage all various components of the audio-visual system.

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