Masahito Togami, Shinji Sakano, Toshiyuki Matsuda: Acoustic echo canceller system. Hitachi, Antonelli Terry Stout & Kraus, February 28, 2012: US08126161 (11 worldwide citation)

An acoustic echo canceller system having a filter with high suppression performance of acoustic echo, generated by using microphone array having a plurality of microphone elements, judging a band where only a speaker sound is present, based on phase difference among microphones, and carrying out ada ...

Kazuyuki Takizawa, Masahito Togami: Portable terminal device. Casio Hitachi Mobile Communications, Cohen Pontani Lieberman & Pavane, January 25, 2011: US07877125 (2 worldwide citation)

A portable terminal device can extrapolate the position of a sound source in the thicknesswise direction regardless of the use style. A slide type portable terminal has an upper casing, a lower casing, and a coupling part that couples the casings in such a way that their positional relation is chang ...

Atsushi Koike, Masahito Togami: Noise suppression system, sound acquisition apparatus, sound output apparatus, and computer-readable medium. Casio Hitachi Mobile Communications, Cozen O Connor, April 24, 2012: US08165641 (2 worldwide citation)

The sound acquisition apparatus broadcasts a sound “output notice request” through a communication network. In response to the request by the sound acquisition apparatus, the sound output apparatus gives notification of starting a sound output operation, the sound acquisition apparatus requests the ...

Toshihiro Kujirai, Masahito Togami, Yasunari Obuchi: Sound collection system. Hitachi, Stites & Harbison PLLC, Juan Carlos A Marquez Esq, September 8, 2009: US07587055 (2 worldwide citation)

Collecting the sound while rotating at least one or more microphone around a rotational axis, the filter processing is carried out in accordance with the positional information of the microphone at each point.

Yohei Kawaguchi, Yuichiro Hashimoto, Masuyuki Sugiyama, Shun Kumano, Akihito Kaneko, Masahito Togami, Kazushige Nishimura, Hiroyuki Inoue: Mass spectrometric system. Hitachi High Technologies Corporation, Crowell & Moring, March 15, 2016: US09287105 (1 worldwide citation)

There is a tendency of the intensity and the shape of a spectrum to be measured transitioning with the passage of measured time, depending on the volatility and the reactivity of a component. A mass spectrometric system includes: a mass spectrometric unit that measures a specimen and outputs a mass ...

Masahito Togami, Yohei Kawaguchi: Sound monitoring system for sound field selection based on stored microphone data. Hitachi, Antonelli Terry Stout & Kraus, March 25, 2014: US08682675 (1 worldwide citation)

Monitoring accuracy degrades due to a noise where many sound sources exist other than those to be monitored. A sound monitoring system includes a microphone array having multiple microphones and a location-based abnormal sound monitoring section. The location-based abnormal sound monitoring section ...

Masahito Togami, Yohei Kawaguchi: Dereverberation parameter estimation device and method, dereverberation/echo-cancellation parameter estimation device, dereverberation device, dereverberation/echo-cancellation device, and dereverberation device online conferencing system. Hitachi, Crowell & Moring, March 15, 2016: US09288576 (1 worldwide citation)

In a conventional dereverberation system, when there is a fluctuating reverberation component, it has been difficult to determine, with high accuracy, a linear dereverberation filter for removing a non-fluctuating reverberation component. An algorithm integrating a dereverberation system using a lin ...

Masahito Togami, Akio Amano: Voice communication device, voice communication method, and voice communication program. Hitachi, Antonelli Terry Stout & Kraus, June 11, 2013: US08462190 (1 worldwide citation)

Provided is a voice communication device for carrying out voice communication among a plurality of locations, including: a sound source direction identification block for identifying a direction of a sound source; a voice sender block for sending the collected voice to a different location; a voice ...

Masahito Togami, Tatehito Usui, Kosa Hirota, Satomi Inoue, Shigeru Nakamoto: Plasma processing apparatus and operational method thereof. Hitachi High Technologies Corporation, Miles & Stockbridge P C, September 19, 2017: US09767997

A plasma processing apparatus includes: a detector configured to detect a change in an intensity of light emission from plasma formed inside a processing chamber; and a unit configured to adjust conditions for forming the plasma or processing a wafer arranged inside the processing chamber using an o ...

Yohei Kawaguchi, Tatehito Usui, Masahito Togami, Satomi Inoue, Shigeru Nakamoto: Plasma processing apparatus and operating method of plasma processing apparatus. Hitachi High Technologies Corporation, Mattingly & Malur PC, April 3, 2018: US09934946

A plasma processing device performing etching processing to a sample disposed in a processing chamber disposed in a vacuum vessel by using plasma formed in the processing chamber includes a light detector, a component detector, and a determination unit. The light detector detects light intensity of ...