| Presentation | 2006-07-27 Digital vision chip architecture for retinal prosthesis and preliminary experiments Keiichiro KAGAWA, Takashi TOKUDA, Masahiro NUNOSHITA, Jun OHTA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We are studying vision chips for retinal prosthesis in which the vision chip implanted on or underneath the retina of the blind patients makes visual sensation by stimulating the surviving retinal cells according to the captured images. In this report, we describe a distributed and isolated microchip architecture powered by infrared light to cover large area of the retina with multiple microchips to decrease operation faults concerning disconnection of electric contacts or damages to the packaging. We also discuss digital implementation of almost all part of the pixel circuits of the vision chip to make design and verification easy. By use of a pulse-frequency-modulation photosensor with wide dynamic range using a capacitive-feedback-reset scheme that works as a 1-bit ADC, the vision chip architecture with synthesizability from HDL sources was discussed. We also show a real-time emulator to verify operation of image processing circuits described by HDL. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | retinal prosthesis / vision chip / distributed and isolated architecture / pulse frequency modulation / HDL |
| Paper # | ICD2006-67 |
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| Conference Information | |
| Committee | ICD |
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| Conference Date | 2006/7/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Integrated Circuits and Devices (ICD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Digital vision chip architecture for retinal prosthesis and preliminary experiments |
| Sub Title (in English) | |
| Keyword(1) | retinal prosthesis |
| Keyword(2) | vision chip |
| Keyword(3) | distributed and isolated architecture |
| Keyword(4) | pulse frequency modulation |
| Keyword(5) | HDL |
| 1st Author's Name | Keiichiro KAGAWA |
| 1st Author's Affiliation | Graduate School of Materials Science, Nara Institute of Science and Technology() |
| 2nd Author's Name | Takashi TOKUDA |
| 2nd Author's Affiliation | Graduate School of Materials Science, Nara Institute of Science and Technology |
| 3rd Author's Name | Masahiro NUNOSHITA |
| 3rd Author's Affiliation | Graduate School of Materials Science, Nara Institute of Science and Technology |
| 4th Author's Name | Jun OHTA |
| 4th Author's Affiliation | Graduate School of Materials Science, Nara Institute of Science and Technology |
| Date | 2006-07-27 |
| Paper # | ICD2006-67 |
| Volume (vol) | vol.106 |
| Number (no) | 189 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |