Researchers from the University of Washington have figured out how to use a technique called backscattering to stream video 99 percent more efficiently. The video processing is essentially handed off to another device that does the heavy lifting, resulting in a significant reduction in power consumption.



We present a novel architecture that enables HD video streaming from a low-power, wearable camera to a nearby mobile device. To achieve this, we present an “analog” video backscatter technique that feeds analog pixels from the photo-diodes directly to the backscatter hardware, thereby eliminating power-consuming hardware components, such as ADCs and codecs.

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Source: [H]ardOCP – Towards Battery-Free HD Video Streaming