Improvement of a pulse frequency modulation based photosensor for retinal prosthesis
説明
This paper describes improvements in output waveform of pulse frequency modulation (PFM) photosensor to be effectively adapted for retinal prosthesis. A 32/spl times/32-pixel PFM photosensor array chip is fabricated using 0.6 /spl mu/m CMOS technology and demonstrated the improved functions. Also the output pulse pattern is displayed with 32/spl times/32-LED array to visualize the pulse output waveform. The next version of a PFM vision chip is designing for in vivo experiment, in which in-pixel image processing functions in pulse domain are employed.
収録刊行物
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- Proceedings of IEEE Sensors 2003 (IEEE Cat. No.03CH37498)
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Proceedings of IEEE Sensors 2003 (IEEE Cat. No.03CH37498) 1 171-174, 2004-07-08
IEEE