Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Eom, Kyeongho | - |
dc.contributor.author | Park, Minju | - |
dc.contributor.author | Lee, Han-Sol | - |
dc.contributor.author | Ku, Seung-Beom | - |
dc.contributor.author | Kim, Namju | - |
dc.contributor.author | Cha, Seongkwang | - |
dc.contributor.author | Goo, Yong Sook | - |
dc.contributor.author | Kim, Sohee | - |
dc.contributor.author | Kim, Seong-Woo | - |
dc.contributor.author | Lee, Hyung-Min | - |
dc.date.accessioned | 2023-10-20T14:10:17Z | - |
dc.date.available | 2023-10-20T14:10:17Z | - |
dc.date.created | 2023-09-15 | - |
dc.date.issued | 2023-11 | - |
dc.identifier.issn | 0018-9200 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/46528 | - |
dc.description.abstract | This article proposes a 505-channel pixel-sharing sub-retinal prosthesis (PSRP) system-on-chip (SoC) that aims to effectively restore patients’ visual acuity using the modular active/return electrode (Mod-A/R) scheme to mitigate current scattering and time-based photodiode (T-PD) sensing to increase the dynamic range (DR) of light sensing. To improve stimulation efficiency, the PSRP SoC adopts per-pixel dynamic voltage scaling (DVS) that can adaptively select different optimal supply voltages for each pixel. The proposed PSRP SoC has a small area of 0.01 mm per pixel, while the Mod-A/R scheme reduces the current scattering by up to 95.4%. By combining five pixels into a single structure, the five-pixel sharing set can accommodate the T-PD sensor and the per-pixel DVS. The proposed T-PD sensor with internal clock modulation can detect the light in the range of 0.13–19 klux with a DR of 35.8 dB, while the per-pixel DVS reduces stimulation energy consumption by up to 64%. The PSRP SoC coated with sputtered iridium oxide film (SIROF) electrode can be applied to clinical trials by adapting the light detection range and stimulus intensity with 44-bit external control. Ex vivo experiments with retinal samples of mice have verified the effectiveness of the PSRP SoC. IEEE | - |
dc.language | English | - |
dc.publisher | Institute of Electrical and Electronics Engineers Inc. | - |
dc.title | A Low-Stimulus-Scattering Pixel-Sharing Sub-Retinal Prosthesis SoC With Time-Based Photodiode Sensing and Per-Pixel Dynamic Voltage Scaling | - |
dc.type | Article | - |
dc.identifier.doi | 10.1109/JSSC.2023.3305521 | - |
dc.identifier.wosid | 001060682900001 | - |
dc.identifier.scopusid | 2-s2.0-85169700841 | - |
dc.identifier.bibliographicCitation | IEEE Journal of Solid-State Circuits, v.58, no.11, pp.2976 - 2989 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | pixel sharing | - |
dc.subject.keywordAuthor | retinal prosthesis (RP) | - |
dc.subject.keywordAuthor | stimulator | - |
dc.subject.keywordAuthor | stimulus scattering | - |
dc.subject.keywordAuthor | sub-retina | - |
dc.subject.keywordAuthor | time-based | - |
dc.subject.keywordAuthor | Dynamic voltage scaling (DVS) | - |
dc.subject.keywordAuthor | electrode array | - |
dc.subject.keywordAuthor | image sensor | - |
dc.subject.keywordAuthor | implantable medical devices (IMDs) | - |
dc.subject.keywordAuthor | photodiode (PD) | - |
dc.subject.keywordPlus | POWER | - |
dc.subject.keywordPlus | SYSTEM | - |
dc.citation.endPage | 2989 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 2976 | - |
dc.citation.title | IEEE Journal of Solid-State Circuits | - |
dc.citation.volume | 58 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.type.docType | Article | - |
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