Using HDMI radio interference for high-speed data transfer
I'm not an electrical engineer, so hoping one here may be able to provide some info.<p>How does this work? Specifically:<p>> Maybe, if we use the strong pulses for synchronisation and plot the amplitude of that noise as a two-dimensional picture, we could see something?<p>From surface level knowledge, HDMI uses Transition Minimised Differential Signalling (TMDS). A direct plotting of noise from that transmission line should not provide even the low quality greyscale image repro shown. This may just be a titling issue but I'm assuming that based on the info shown the RF source must be the display electronics rather than HDMI line? What am I missing?