Toshihiro Azami
Fujitsu
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Publication
Featured researches published by Toshihiro Azami.
IEEE Transactions on Human-Machine Systems | 2014
Kajiro Watanabe; Yosuke Kurihara; Ko Watanabe; Toshihiro Azami; Shoko Nukaya; Hiroshi Tanaka
This paper describes a novel application of the bidirectional audio microphones in mobile phones to measure biosignals for ubiquitous health monitoring. The bidirectional microphone has two pressure-detecting ports. A pressure-detecting film receives the differential pressure between the ports. We apply this idea to biosignal measurements for a mobile phone. We used the microphone as 1) a sphygmograph at the fingertip, 2) a stethoscope in which a delay time sensor of pulse wave arrivals from the neck near the carotid or chest near the heart to the fingertip, and 3) a bed sensing device for biosignals. When used as a sphygmograph, it detects the wave similar to the second derivative of the conventional optical pulse oxymeter output wave. When used as a stethoscope, it detects cardiac sound and the pulse wave and respiration. With two microphones, the delay time from the neck carotid to the fingertip is detected.
Archive | 2001
Toru Kamiwada; Toshihiro Azami; Takushi Fujita
Archive | 2002
Toshihiro Sonoda; Tomoyoshi Takebayashi; Toshihiro Azami; Fumio Honda; Yasuo Sato; Makoto Morioka; Shinichi Ono; Midori Fukai
Archive | 1991
Tomoyoshi Takebayashi; Toshihiro Azami; Ryuichi Matsukura; Hiroki Hasegawa; Satoshi Okuyama
Archive | 1997
Toshihiro Azami
Archive | 1996
Satoru Watanabe; Souichi Okada; Toshihiro Azami; Jun Kakuta; Tsuneo Katsuyama
Archive | 2003
Toshihiro Azami; Katsutoshi Yano; Tomoharu Matsushita; Tomonori Yasumoto
Archive | 2003
Toshihiro Azami; Toshihiro Sonoda; Tomoyoshi Takebayashi; Yasuo Sato; Makoto Morioka; Shinichi Ono; Midori Fukai
Archive | 1995
Tomoyoshi Takebayashi; Toshihiro Azami; Ryuichi Matsukura; Hiroki Hasegawa; Satoshi Okuyama
Archive | 2001
Toshihiro Azami; Katsutoshi Yano; Tomoharu Matsushita; Tomonori Yasumoto