A micro-sized photo detectable stimulator array for retinal prosthesis by distributed sensor network approach

Author

Uehara, Akihiro ; Pan, Yi-Li ; Kagawa, Keiichiro ; Tokuda, Takashi ; Ohta, Jun ; Nunoshita, Masahiro

Author_Institution

Graduate Sch. of Mater. Sci., Nara Inst. of Sci. & Technol., Japan

fYear

2004

Firstpage

302

Lastpage

305

Abstract

In this paper, we propose a flexible retinal prosthesis device by a distributed sensor network approach. The novel point of the proposed device is that the flexible stimulator consists of micro-sized CMOS devices linked in network. The micro-sized CMOS device consists of single-wire serial interface, a photo detector with pixel-level ADC, an image processing circuit, a current DAC and a current stimulator. The device is fabricated in a 0.6 μm CMOS technology and the device size is 500 μm × 500 μm. The function of the prototype device is tested successfully.

Keywords

CMOS image sensors; analogue-digital conversion; eye; photodetectors; prosthetics; 0.6 micron; 500 micron; current DAC; current stimulator; distributed sensor network approach; flexible stimulator; image processing circuit; micro-sized photo detectable stimulator array; pixel-level ADC; retinal prosthesis; single-wire serial interface; CMOS image sensors; CMOS process; CMOS technology; Circuits; Detectors; Image processing; Pixel; Prosthetics; Retina; Sensor arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on

Print_ISBN

0-7803-8287-0

Type

conf

DOI

10.1109/VLSIC.2004.1346596

Filename

1346596