Reflective photoplethysmography sensor with ring-shaped photodiode. - Masahide Kano; Masatoshi Ishii; Kensuke Kanda; Takayuki Fujita; Kazusuke Maenaka; Kazuo Kasai; Kohei Higuchi (SMC, 2012)

Fabrication of Reflectance Pulse Oximeter with Ring-Shaped Photodiode. - Masahide Kano; Yota Sato; Kensuke Kanda; Takayuki Fujita; Kazusuke Maenaka; Kazuo Kasai; Kohei Higuchi (SMC, 2013)