Patents by Inventor Tetsuya Takiguchi

Tetsuya Takiguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190134316
    Abstract: The present invention provides a needle unit configured to be mounted to medical syringe, the needle unit including a needle member having a longitudinally extending inner space and having a needle hole formed in a side surface of a front end and an opening formed in a base end, the inner space being in communication with the outside through the needle hole and the opening, a base portion for supporting the base end of the needle member and communicating between the syringe and the inner space of the needle member by being attached to the syringe, a slide member movable along an outer peripheral surface of the needle member and capable of taking a first position to close the needle hole and a second position to uncover the needle hole in the base end portion side of the first position, a biasing member that biases the slide member from the second position side to the first position side; and a cap removably mounted to the base portion and is configured to cover the needle member.
    Type: Application
    Filed: June 10, 2016
    Publication date: May 9, 2019
    Applicant: OTSUKA PHARMACEUTICAL FACTORY, INC.
    Inventors: Masaki NISHIOKA, Osamu TAKIGUCHI, Katsuyoshi HAMAI, Tetsuya MASUDA, Fujio INOUE, Koichi TAKEDA
  • Patent number: 8024184
    Abstract: A speech recognition device and method configured to include a computer, for recognizing speech, including: a storage location for storing a feature quantity acquired from a speech signal for each frame; storage portions for storing acoustic model data and language model data; a echo speech component for generating echo speech model data from a speech signal acquired prior to a speech signal to be processed at the current time point and using the echo speech model data to generate adapted acoustic model data; and a processing component for utilizing the feature quantity, the adapted acoustic model data, and the language model data to provide a speech recognition result of the speech signal.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: September 20, 2011
    Assignee: Nuance Communications, Inc.
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Patent number: 7895038
    Abstract: Speech enhancement techniques for extemporaneous noise without a noise interval and unknown extemporaneous noise are provided with a method of signal enhancement including subtracting a given reference signal from an input signal containing a target signal and a noise signal by spectral subtraction; applying an adaptive filter to the reference signal; and controlling a filter coefficient of the adaptive filter in order to reduce components of the noise signal in the input signal. In signal enhancement, a database of a signal model concerning the target signal expressing a given feature by a given statistical model is provided, and the filter coefficient is controlled based on the likelihood of the signal model with respect to an output signal from the spectral subtraction means.
    Type: Grant
    Filed: May 26, 2008
    Date of Patent: February 22, 2011
    Assignee: International Business Machines Corporation
    Inventors: Masafumi Nishimura, Tetsuya Takiguchi
  • Patent number: 7720679
    Abstract: Provided is a method for canceling background noise of a sound source other than a target direction sound source in order to realize highly accurate speech recognition, and a system using the same. In terms of directional characteristics of a microphone array, due to a capability of approximating a power distribution of each angle of each of possible various sound source directions by use of a sum of coefficient multiples of a base form angle power distribution of a target sound source measured beforehand by base form angle by using a base form sound, and power distribution of a non-directional background sound by base form, only a component of the target sound source direction is extracted at a noise suppression part. In addition, when the target sound source direction is unknown, at a sound source localization part, a distribution for minimizing the approximate residual is selected from base form angle power distributions of various sound source directions to assume a target sound source direction.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: May 18, 2010
    Assignee: Nuance Communications, Inc.
    Inventors: Osamu Ichikawa, Tetsuya Takiguchi, Masafumi Nishimura
  • Patent number: 7660717
    Abstract: Speech recognition is performed by matching between a characteristic quantity of an inputted speech and a composite HMM obtained by synthesizing a speech HMM (hidden Markov model) and a noise HMM for each speech frame of the inputted speech by use of the composite HMM.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: February 9, 2010
    Assignee: Nuance Communications, Inc.
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Publication number: 20090306977
    Abstract: A speech recognition device and method configured to include a computer, for recognizing speech, including: a storage location for storing a feature quantity acquired from a speech signal for each frame; storage portions for storing acoustic model data and language model data; a echo speech component for generating echo speech model data from a speech signal acquired prior to a speech signal to be processed at the current time point and using the echo speech model data to generate adapted acoustic model data; and a processing component for utilizing the feature quantity, the adapted acoustic model data, and the language model data to provide a speech recognition result of the speech signal.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 10, 2009
    Applicant: Nuance Communications, Inc.
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Patent number: 7599836
    Abstract: To provide a method of specifying each of speakers of individual voices, based on recorded voices made by a plurality of speakers, with a simple system configuration, and to provide a system using the method. The system includes: microphones individually provided for each of the speakers; a voice processing unit which gives a unique characteristic to each pair of two-channel voice signals recorded with each of the microphones 10, by executing different kinds of voice processing on the respective pairs of voice signals, and which mixes the voice signals for each channel; and an analysis unit which performs an analysis according to the unique characteristics, given to the voice signals concerning the respective microphones through the processing by the voice processing unit, and which specifies the speaker for each speech segment of the voice signals.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: October 6, 2009
    Assignee: Nuance Communications, Inc.
    Inventors: Osamu Ichikawa, Masafumi Nishimura, Tetsuya Takiguchi
  • Patent number: 7533015
    Abstract: Provides speech enhancement techniques for extemporaneous noise without a noise interval and unknown extemporaneous noise. Signal enhancement includes: subtracting a given reference signal from an input signal containing a target signal and a noise signal by spectral subtraction; applying an adaptive filter to the reference signal; and controlling a filter coefficient of the adaptive filter in order to reduce components of the noise signal in the input signal. In signal enhancement, a database of a signal model concerning the target signal expressing a given feature by a given statistical model is provided, and the filter coefficient is controlled based on the likelihood of the signal model with respect to an output signal from the spectral subtraction means.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: May 12, 2009
    Assignee: International Business Machines Corporation
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Patent number: 7478041
    Abstract: Provided is a method for canceling background noise of a sound source other than a target direction sound source in order to realize highly accurate speech recognition, and a system using the same. In terms of directional characteristics of a microphone array, due to a capability of approximating a power distribution of each angle of each of possible various sound source directions by use of a sum of coefficient multiples of a base form angle power distribution of a target sound source measured beforehand by base form angle by using a base form sound, and power distribution of a non-directional background sound by base form, only a component of the target sound source direction is extracted at a noise suppression part. In addition, when the target sound source direction is unknown, at a sound source localization part, a distribution for minimizing the approximate residual is selected from base form angle power distributions of various sound source directions to assume a target sound source direction.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: January 13, 2009
    Assignee: International Business Machines Corporation
    Inventors: Osamu Ichikawa, Tetsuya Takiguchi, Masafumi Nishimura
  • Publication number: 20080294432
    Abstract: Provides speech enhancement techniques which are effective even for extemporaneous noise without a noise interval and unknown extemporaneous noise. An example of a signal enhancement device includes: spectral subtraction means for subtracting a given reference signal from an input signal containing a target signal and a noise signal by spectral subtraction; an adaptive filter applied to the reference signal; and coefficient control means for controlling a filter coefficient of the adaptive filter in order to reduce components of the noise signal in the input signal. In the signal enhancement device, a database of a signal model concerning the target signal expressing a given feature by means of a given statistical model is provided, and the filter coefficient is controlled based on the likelihood of the signal model with respect to an output signal from the spectral subtraction means.
    Type: Application
    Filed: May 26, 2008
    Publication date: November 27, 2008
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Patent number: 7403896
    Abstract: Speech recognition is performed by matching between a characteristic quantity of an inputted speech and a composite HMM obtained by synthesizing a speech HMM (hidden Markov model) and a noise HMM for each speech frame of the inputted speech by use of the composite HMM.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: July 22, 2008
    Assignee: International Business Machines Corporation
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Publication number: 20060122832
    Abstract: Provides speech enhancement techniques which are effective even for extemporaneous noise without a noise interval and unknown extemporaneous noise. An example of a signal enhancement device includes: spectral subtraction means for subtracting a given reference signal from an input signal containing a target signal and a noise signal by spectral subtraction; an adaptive filter applied to the reference signal; and coefficient control means for controlling a filter coefficient of the adaptive filter in order to reduce components of the noise signal in the input signal. In the signal enhancement device, a database of a signal model concerning the target signal expressing a given feature by means of a given statistical model is provided, and the filter coefficient is controlled based on the likelihood of the signal model with respect to an output signal from the spectral subtraction means.
    Type: Application
    Filed: February 28, 2005
    Publication date: June 8, 2006
    Applicant: International Business Machines Corporation
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Publication number: 20050267762
    Abstract: To provide a method of specifying each of speakers of individual voices, based on recorded voices made by a plurality of speakers, with a simple system configuration, and to provide a system using the method. The system includes: microphones individually provided for each of the speakers; a voice processing unit which gives a unique characteristic to each pair of two-channel voice signals recorded with each of the microphones 10, by executing different kinds of voice processing on the respective pairs of voice signals, and which mixes the voice signals for each channel; and an analysis unit which performs an analysis according to the unique characteristics, given to the voice signals concerning the respective microphones through the processing by the voice processing unit, and which specifies the speaker for each speech segment of the voice signals.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 1, 2005
    Applicant: International Business Machines Corporation
    Inventors: Osamu Ichikawa, Masafumi Nishimura, Tetsuya Takiguchi
  • Publication number: 20050010410
    Abstract: A speech recognition device and method configured to include a computer, for recognizing speech, including: a storage location for storing a feature quantity acquired from a speech signal for each frame; storage portions for storing acoustic model data and language model data; a echo speech component for generating echo speech model data from a speech signal acquired prior to a speech signal to be processed at the current time point and using the echo speech model data to generate adapted acoustic model data; and a processing component for utilizing the feature quantity, the adapted acoustic model data, and the language model data to provide a speech recognition result of the speech signal.
    Type: Application
    Filed: May 20, 2004
    Publication date: January 13, 2005
    Applicant: International Business Machines Corporation
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Publication number: 20030225581
    Abstract: Speech recognition is performed by matching between a characteristic quantity of an inputted speech and a composite HMM obtained by synthesizing a speech HMM (hidden Markov model) and a noise HMM for each speech frame of the inputted speech by use of the composite HMM.
    Type: Application
    Filed: March 14, 2003
    Publication date: December 4, 2003
    Applicant: International Business Machines Corporation
    Inventors: Tetsuya Takiguchi, Masafumi Nishimura
  • Publication number: 20030177006
    Abstract: Provided is a method for canceling background noise of a sound source other than a target direction sound source in order to realize highly accurate voice recognition, and a system using the same. In terms of directional characteristics of a microphone array, due to a capability of approximating a power distribution of each angle of each of possible various sound source directions by use of a sum of coefficient multiples of a base form angle power distribution of a target sound source measured beforehand by base form angle by using a base form sound, and power distribution of a non-directional background sound by base form, only a component of the target sound source direction is extracted at a noise suppression part. In addition, when the target sound source direction is unknown, at a sound source localization part, a distribution for minimizing the approximate residual is selected from base form angle power distributions of various sound source directions to assume a target sound source direction.
    Type: Application
    Filed: March 12, 2003
    Publication date: September 18, 2003
    Inventors: Osamu Ichikawa, Tetsuya Takiguchi, Masafumi Nishimura