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Low-delay video control in a personal area network for augmented reality

Low-delay video control in a personal area network for augmented reality

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© The Institution of Engineering and Technology
Published

A personal area network (PAN) is a feature of an augmented reality system, transmitting modified video for real-time display. Low-delay communication of encoded video over a Bluetooth wireless PAN is achieved in favourable channel conditions by a combination of dynamic packetisation of video slices together with centralised and predictive rate control. The result is minimised packet delay (below 0.05 s) and high-quality 40 dB video, with packet loss limited to 4% from radio frequency noise. Where channel conditions result in error bursts, dynamic rate change is introduced to reduce the need for packet retransmission and improve power efficiency.

Inspec keywords: video communication; Bluetooth; augmented reality

Other keywords: dynamic packetisation; predictive rate control; augmented reality; video slices; low-delay video control; video encoding; real-time display; channel conditions; personal area network; Bluetooth wireless PAN

Subjects: Radio links and equipment; Multimedia communications; Virtual reality

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