Koutaro Yasuoka

A 0.9-V pulse frequency modulation photosensor based on capacitive feedback reset

Keiichiro Kagawa, Jun Ohta, Masahiro Nunoshita, 2005, IS&T/SPIE Electronic Imaging.

Functional verification of pulse frequency modulation-based image sensor for retinal prosthesis by in vitro electrophysiological experiments using frog retina.

Keiichiro Kagawa, Masahiro Nunoshita, Jun Ohta, 2006, Biosensors & bioelectronics.