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This paper describes the importance of having a backchannel communication link between a microstimulator ASIC and an external control unit for complete safety closure and closed-loop power management. An example of the overall microstimulation system with backchannel communication link for an epiretinal implant is provided. Additionally, the backchannel operation and protocol between the implant chip...
Optical transcutaneous data links have rarely been researched, and mostly out of-body communication with high data rates has been investigated: up to 40Mb/s has been achieved with high power consumption and an obvious drawback was the implantation of a photoemitter as part of the system. Optical communication was used to control an epiretinal stimulator. The photoemitter sits in front of the lens,...
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