Patents by Inventor Hideaki Koizumi

Hideaki Koizumi 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).

  • Patent number: 7359825
    Abstract: In order to provide an optical measurement system and an optical measurement method which is suitable for optically measuring a body to be inspected and easily obtaining an image of a desired item based on information obtained by the measurement, an optical measurement method including an initial display process for selectively instructing any one of selection of optical measurement, analysis of said optical measurement result and completion of a program; a process for inputting items of condition including a measurement mode; a process for displaying a light irradiation position and a light detection position and a state expressing measurement position relationship together with said mode; a process for instructing to form a file for storing said optical measurement result; a process for instructing a measurement condition to detect light signals from the inside of a body to be inspected which is irradiated by a multi-wavelength multi-channel; and a process for displaying said signals for each channel detect
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: April 15, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Atsushi Maki, Yuuichi Yamashita, Tsuyoshi Yamamoto, Hideaki Koizumi
  • Patent number: 7286870
    Abstract: In an optical measurement system and imaging method adapted to measure in vivo information in a living body without harming the living body, light rays of a plurality of wavelengths which are modulated in intensity with a plurality of different frequencies are irradiated on a plurality of irradiation positions on the surface of a living body, and time-variable changes in living body transmitting light intensity levels corresponding to the respective wavelengths and the respective irradiation positions are measured at different positions on the surface of the living body. Light is utilized to image the results of the measurements, in which the measuring time is shortened by estimating fluctuation attributable to the living body, and the presence or absence of a change in measured signal can be decided easily by displaying an estimation signal and a measured signal at a time.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: October 23, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Atsushi Maki, Hideaki Koizumi, Fumio Kawaguchi, Yuichi Yamashita, Yoshitoshi Ito
  • Patent number: 7142906
    Abstract: A control device and measurement system for a living body applies lights of at least one wavelength in a visible-infrared region to a plurality of incident positions on a surface of the living body, and a light detector detects lights transmitted through the living body at a plurality of detection positions on the surface of the living body. An operation unit determines a type of output signal, based on an intensity of the transmitted light and pre-stored reference data, and outputs a signal indicative thereof as the type of output signal. An external equipment executes a functional operation according to the type of output signal from the operation unit. The incident positions and the detection positions are alternately disposed in square lattice form and middle points between the incident positions and detection positions adjacent to one another are defined as measurement positions.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: November 28, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Yuichi Yamashita, Atsushi Maki, Hideaki Koizumi
  • Publication number: 20060184046
    Abstract: An optical measurement instrument for a living body including a first light irradiator for irradiating light from a first irradiation position in a small region as considered as a plan on the surface of a head of a subject into the inside of the head in the region in the direction of depth, a second light irradiator for irradiating light from a second irradiation position in the region into the inside of the head, a first detecting for detecting the first irradiated light to pass through the head in a first detection position in the region, a second detector for detecting the second irradiated light to pass through the head in a second detection position in the region, and a calculator for multiplication or addition of a first signal and a second signal in a calculator.
    Type: Application
    Filed: March 10, 2006
    Publication date: August 17, 2006
    Inventors: Yuichi Yamashita, Atsushi Maki, Hideaki Koizumi
  • Publication number: 20060184045
    Abstract: An optical measurement instrument for a living body to measure dynamic change of blood of a brain includes light incident units for irradiating light on a head of a subject, a light detector for detecting a light irradiated from the light incident units and reflected within the subject, a signal processing unit for calculating a spacious distribution of signals from the subject to be measured from a signal detected by the light detector, and a display for displaying the spacious distribution of signals from the subject to be measured. Measurement points are arranged about a middle of the light incident units and the light detector, and the light incident units and the light detector are arranged such that the measurement points are arranged to form a lattice whose circumference is square.
    Type: Application
    Filed: March 10, 2006
    Publication date: August 17, 2006
    Inventors: Yuichi Yamashita, Atsushi Maki, Hideaki Koizumi
  • Publication number: 20060184047
    Abstract: An input instrument for a living body, using an optical measurement system for the living body, includes first and second light incident units arranged on a head of a living body, and first and second light detectors which are paired with the first and the second light incident units respectively, and which are provided to collect light which passes through the living body based on the light irradiated onto the head of the living body by the light incident means. Measurement signals are obtained by measuring a plurality of regions of the living body by the first and the second light incident units, the first and the second light detectors, and characteristic parameters of the signals of an arbitrary time interval of the measured signals are calculated.
    Type: Application
    Filed: March 10, 2006
    Publication date: August 17, 2006
    Inventors: Yuichi Yamashita, Atsushi Maki, Hideaki Koizumi
  • Publication number: 20060178839
    Abstract: In order to provide an optical measurement system and an optical measurement method which is suitable for optically measuring a body to be inspected and easily obtaining an image of a desired item based on information obtained by the measurement, an optical measurement method comprising an initial display process for selectively instructing any one of selection of optical measurement, analysis of said optical measurement result and completion of a program (S1); a process for inputting items of condition including a measurement mode (S2); a process for displaying a light irradiation position and a light detection position and a state expressing measurement position relationship together with said mode (S4); a process for instructing to form a file for storing said optical measurement result; a process for instructing a measurement condition to detect light signals from the inside of a body to be inspected which is irradiated by a multi-wavelength multi-channel (S10); and a process for displaying said signals f
    Type: Application
    Filed: March 20, 2006
    Publication date: August 10, 2006
    Inventors: Atsushi Maki, Yuuichi Yamashita, Tsuyoshi Yamamoto, Hideaki Koizumi
  • Patent number: 7072700
    Abstract: The invention provides a biological photometric device characterized by a method of disposing a light source and a light detector, capable of measuring a distribution of concentrations at different depths and changes in the concentration in the case of measuring and forming an image of the concentration of metabolites in an organ and changes in the concentration. The light sources and light detectors are disposed on the subject so that, in the case of measuring a concentration of metabolites in an organ and changes in the concentration in a shallow portion in the subject by using an about midpoint position between each of the light sources and each of the light detectors as a sampling point, measurement is performed by using a sampling point of a pair of the light source and said light detector which are disposed at a small interval. In the case of measurement in a deep portion in the subject, a sampling point of a pair of the light source and the light detector which are disposed at a large interval is used.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: July 4, 2006
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Tsuyoshi Yamamoto, Atsushi Maki, Hideaki Koizumi, Fumio Kawaguchi, Michiyuki Fujiwara, Mikihiro Kaga
  • Patent number: 7047149
    Abstract: An optical measurement system for optically measuring a body to be inspected and obtaining an image of a desired item based on information obtained by the measurement includes means for displaying a number of measurement points, means for indicating a light irradiation position and a light detecting position and means for displaying a measurement position and a state of allocating a number to the measurement position. The system further includes means for displaying measuring time sequence data, means for setting a condition of acquiring data, means for displaying a status of acquiring the data, means for instructing control of measurement and means for marking a mark at a position measuring time sequence data.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: May 16, 2006
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Atsushi Maki, Yuuichi Yamashita, Tsuyoshi Yamamoto, Hideaki Koizumi
  • Publication number: 20060025659
    Abstract: In order to provide a compact device easy to handle and adjust for use in bloodless measurement of the glucose concentration, in which the angle of polarization varies in synchronism with the magnetic field modulation, the direction of applying the magnetic field is so arranged as to cross the optical axis.
    Type: Application
    Filed: March 3, 2005
    Publication date: February 2, 2006
    Inventors: Masashi Kiguchi, Tatsuya Tomaru, Hideaki Koizumi, Atsushi Maki, Hideo Kawaguchi
  • Patent number: 6947779
    Abstract: Optical measurement that is optimum for improving spatial resolution is accomplished by making it possible to estimate a physical quantity of an object substance to be measured at any point on a subject. When any position to be evaluated, in an image shown in a window 1-1, is pointed and selected a mouse pointer 1-4, the value of the concentration or its change of the object substance at the point is displayed in the display area 1-7 of a window 1-3. The drawings represents an example in which one position is specified and there are two object substances to be measured. The value of the concentration or its change of each object substance to be measured is separately displayed.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: September 20, 2005
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Tsuyoshi Yamamoto, Atsushi Maki, Hideaki Koizumi
  • Publication number: 20050171440
    Abstract: In an optical measurement system and imaging method adapted to measure in vivo information in a living body without harming the living body, light rays of a plurality of wavelengths which are modulated in intensity with a plurality of different frequencies are irradiated on a plurality of irradiation positions on the surface of a living body, and time-variable changes in living body transmitting light intensity levels corresponding to the respective wavelengths and the respective irradiation positions are measured at different positions on the surface of the living body. Light is utilized to image the results of the measurements, in which the measuring time is shortened by estimating fluctuation attributable to the living body, and the presence or absence of a change in measured signal can be decided easily by displaying an estimation signal and a measured signal at a time.
    Type: Application
    Filed: January 19, 2005
    Publication date: August 4, 2005
    Inventors: Atsushi Maki, Hideaki Koizumi, Fumio Kawaguchi, Yuichi Yamashita, Yoshitoshi Ito
  • Publication number: 20050148857
    Abstract: In an optical measurement system and imaging method adapted to measure in vivo information in a living body without harming the living body, light rays of a plurality of wavelengths which are modulated in intensity with a plurality of different frequencies are irradiated on a plurality of irradiation positions on the surface of a living body, and time-variable changes in living body transmitting light intensity levels corresponding to the respective wavelengths and the respective irradiation positions are measured at different positions on the surface of the living body. Light is utilized to image the results of the measurements, in which the measuring time is shortened by estimating fluctuation attributable to the living body, and the presence or absence of a change in measured signal can be decided easily by displaying an estimation signal and a measured signal at a time.
    Type: Application
    Filed: January 19, 2005
    Publication date: July 7, 2005
    Inventors: Atsushi Maki, Hideaki Koizumi, Fumio Kawaguchi, Yuichi Yamashita, Yoshitoshi Ito
  • Publication number: 20050131303
    Abstract: In an optical measurement system and imaging method adapted to measure in vivo information in a living body without harming the living body, light rays of a plurality of wavelengths which are modulated in intensity with a plurality of different frequencies are irradiated on a plurality of irradiation positions on the surface of a living body, and time-variable changes in living body transmitting light intensity levels corresponding to the respective wavelengths and the respective irradiation positions are measured at different positions on the surface of the living body. Light is utilized to image the results of the measurements, in which the measuring time is shortened by estimating fluctuation attributable to the living body, and the presence or absence of a change in measured signal can be decided easily by displaying an estimation signal and a measured signal at a time.
    Type: Application
    Filed: January 19, 2005
    Publication date: June 16, 2005
    Inventors: Atsushi Maki, Hideaki Koizumi, Fumio Kawaguchi, Yuichi Yamashita, Yoshitoshi Ito
  • Patent number: 6901284
    Abstract: An optical measuring apparatus for optically measuring a sample includes a plurality of parts for applying light beams to the sample, a plurality of detecting parts for detecting light beams from the light applying parts which come through the sample, a memory part which receives signals from the detecting parts, converts them into digital signals and stores the digital signals as measuring positions between the light applying part and the light detecting part. Further, there is provided a first display part which shows a relationship between positions on the sample and measuring positions corresponding to the positions of the detecting parts on the sample, and a second display part which shows a relationship between positions on the sample and measuring positions corresponding to the positions of the detecting parts which are shown on the first display part.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: May 31, 2005
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Atsushi Maki, Tsuyoshi Yamamoto, Hideaki Koizumi, Yuichi Yamashita
  • Patent number: 6895269
    Abstract: A device for controlling equipment includes at least one light projector adapted to project light onto a head of a living body. A light collecting section for collecting the light having passed through the head, a light measuring section for measuring an intensity of the light collected by the light collecting section, a memory section for storing a previous history of changes of the intensity of the light measured, a signal judging section for judging if both the intensity of the light measured by said light measuring section and the previous history of changes of the intensity of the light satisfy a predetermined condition, a displaying section for displaying the intensity of the light measured and a result obtained by the signal judging section, and a control signal generating section for generating a control signal for external equipment.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: May 17, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitoshi Ito, Hideaki Koizumi, Atsushi Maki, Yuichi Yamashita, Tsuyoshi Yamamoto
  • Publication number: 20040254475
    Abstract: An optical measuring apparatus for optically measuring a sample includes a plurality of parts for applying light beams to the sample, a plurality of detecting parts for detecting light beams from the light applying parts which come through the sample, a memory part which receives signals from the detecting parts, converts them into digital signals and stores the digital signals as measuring positions between the light applying part and the light detecting part. Further, there is provided a first display part which shows a relationship between positions on the sample and measuring positions corresponding to the positions of the detecting parts on the sample, and a second display part which shows a relationship between positions on the sample and measuring positions corresponding to the positions of the detecting parts which are shown on the first display part.
    Type: Application
    Filed: July 6, 2004
    Publication date: December 16, 2004
    Inventors: Atsushi Maki, Tsuyoshi Yamamoto, Hideaki Koizumi, Yuichi Yamashita
  • Patent number: 6787017
    Abstract: The capillary electrophoresis system includes a wafer-shaped part having passages filled with a buffer solution for introducing sample solutions; a body having a configuration suitable to removably hold and to move the wafer-shaped part. The body includes first and second electrodes for applying a voltage across both ends of passages of the wafer-shaped part to separate and remove the sample solution. The body also includes first and second buffer reservoirs conductive to passages of the wafer-shaped part at specific positions for filling buffer solution around the first and second electrodes. The system according to the present invention facilitates washing of electrophoresis passages and reduces the time and labor costs required for replacement of the fused-silica wafers and simplifies operation by allowing a plurality of sample solutions to be analyzed more quickly.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: September 7, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Atsumu Hirabayashi, Yukiko Hirabayashi, Akihiko Okumura, Hideaki Koizumi
  • Patent number: 6774359
    Abstract: In a sample-introduction tool in which an end of a passage is connected to a reservoir for storing a mobile phase solution, a sample-dropping orifice is provided at the passage and the mobile phase solution and a sample running off from the other end of the passage are introduced into a mass spectrometer by generating a high-speed gas stream around the other end of the passage. The mobile phase solution and the sample are nebulized by the high-speed gas stream, and the injected sample is ionized.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: August 10, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Yukiko Hirabayashi, Atsumu Hirabayashi, Akihiko Okumura, Hideaki Koizumi
  • Publication number: 20040127784
    Abstract: A control device and measurement system for a living body applies lights of at least one wavelength in a visible-infrared region to a plurality of incident positions on a surface of the living body, and a light detector detects lights transmitted through the living body at a plurality of detection positions on the surface of the living body. An operation unit determines a type of output signal, based on an intensity of the transmitted light and pre-stored reference data, and outputs a signal indicative thereof as the type of output signal. An external equipment executes a functional operation according to the type of output signal from the operation unit. The incident positions and the detection positions are alternately disposed in square lattice form and middle points between the incident positions and detection positions adjacent to one another are defined as measurement positions.
    Type: Application
    Filed: October 22, 2003
    Publication date: July 1, 2004
    Inventors: Yuichi Yamashita, Atsushi Maki, Hideaki Koizumi