Shun Bai

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—This paper presents a complete 256-electrode retinal prosthesis chip, which is small and ready for packaging and implantation. It contains 256 separate programmable drivers dedicated to 256 electrodes for flexible stimulation. A 4-wire interface is employed for power and data transmission between the chip and a driving unit. Power and forward data are(More)
In this paper, we present a precise charge balancing and compliance voltage monitoring stimulator front-end for 1024-electrode retinal prosthesis. Our stimulator is based on current mode stimulation. To generate a precisely matched biphasic current pulse, a dynamic current copying technique is applied at the stimulator front-end. A compliance voltage(More)
—This paper presents a highly flexible and complete 256-electrode retinal prosthesis chip, which is small and ready for packaging and implantation. The chip contains 256 separate programmable drivers each of which is dedicated to its own electrode for flexible stimulation. The stimulator possesses a wide range of stimulation features, supporting various(More)
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