>446
タブレットとカメラによる（人間の目に合わせた）モールス発光信号の発信・読み取り自動化は第一段階で、
本命はLEDの周波数変調を使った高レート通信っぽいがな。

>“We’re doing a follow-on effort, a Phase 2 to pursue the LED solution to achieve a 1khz rate of transmission ? or about 1,200 words per minute ? using the Morse code scheme,
>but we would like to explore a binary method or even modulation of the frequency of the LED,” Payne said.

>“With LEDs, it is possible to control light brightness at a frequency much higher than conventional light bulbs: LEDs can be switched on and off at very high rates.
>As result, LED-based lighting can be used for wireless communication services by modulating the intensity of the emitted light,”
>according to Disney Research, who is using the technology to develop children’s products.
>“We call this concept Visible Light Communication (VLC) with LED-to-LED networking. … VLC creates opportunities for low-cost, safe, and environmentally friendly wireless communication solutions.”