Patents by Inventor Tatsuo Nakagawa

Tatsuo Nakagawa 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: 10613206
    Abstract: A compact delay circuit that can dynamically change delay time is configured. A probe includes an analog memory unit that accumulates electric charges corresponding to a reflected wave of an ultrasonic wave produced by a difference between the acoustic impedances on a plurality of capacitors 303 and in turn outputs the electric charges accumulated on the capacitors 303 to an analog memory unit 205. In accumulating electric charges, when a control signal Ctls_l that increases delay time of the reflected wave is inputted, the analog memory unit 205 accumulates the same electric charges on two or more of the capacitors 303 for a preset period, or in outputting electric charges, when a control signal Ctlo_l is inputted, the analog memory unit 205 outputs the electric charges accumulated on one of the capacitors 303 for a preset period.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: April 7, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuo Nakagawa, Hiroshi Masuzawa, Shinya Kajiyama
  • Patent number: 10561163
    Abstract: Disclosed is an extruded noodle having a hole extending therethrough in a longitudinal direction, wherein: the hole closes or contracts during boiling or rehydration in hot water; and the hole in a cross section of the noodle is configured such that a plurality of grooves are formed rotationally symmetrically about a center of the cross section, extending in an outer radial direction from the center of the cross section of the noodle.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: February 18, 2020
    Assignee: NISSIN FOODS HOLDINGS CO., LTD.
    Inventors: Mitsuru Tanaka, Tatsuo Yamaya, Takuo Nakazeko, Shinichi Nakagawa, Masahiro Oda
  • Patent number: 10514386
    Abstract: A sample liquid-surface position measurement device includes: a first light source that illuminates a side face of a container containing a sample; a first optical measurement sensor that is located on the opposite side of the container from the first light source, and measures transmitted light from the first light source; a first label position measuring unit that measures a position of a label affixed to the container; and an analysis section that calculates a liquid-surface position or an interface position of the sample in the container, from transmitted-light intensity data in a longitudinal direction of the container which is measured by the first optical measurement sensor, and from the position of the label in the longitudinal direction of the container which is measured by the first label position measuring unit.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: December 24, 2019
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Tatsuo Nakagawa, Kiyotaka Sugiyama, Tsukasa Suenari, Iwao Suzuki
  • Publication number: 20190383793
    Abstract: A biological sample analyzer includes: a camera 201a imaging a blood collection tube 209 containing a biological sample; an image processing section 201b and a comparative analysis section 206 that analyze the image imaged by the camera in order to extract an existence region of the biological sample; a light source 203a1, a photo sensor 203a2 and a liquid-level position detection section 203b that detect the amount of transmitted light in the blood collection tube 209 in order to detect a liquid-level position of the biological sample; and the comparative analysis section 206 that, based on the extracted existence region of the biological sample and the detected liquid-level position of the biological sample, identifies a determination target portion for a category of the biological sample, and acquires color information on the identified portion, in order to determine a category of the biological sample contained in the blood collection tube 209.
    Type: Application
    Filed: October 10, 2017
    Publication date: December 19, 2019
    Inventors: Kiyotaka SUGIYAMA, Tatsuo NAKAGAWA, Iwao SUZUKI, Tsukasa SUENARI
  • Patent number: 10412983
    Abstract: Disclosed is a method for manufacturing instant noodles using extruded noodles, with each noodle having a hole extending therethrough in a longitudinal direction, wherein the hole closes or contracts during boiling or rehydration in hot water and the hole in a cross section of the noodle is configured such that a plurality of grooves are formed rotationally symmetrically about a center of the cross section, extending in an outer radial direction from the center of the cross section of the noodle.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: September 17, 2019
    Assignee: NISSIN FOODS HOLDINGS CO., LTD.
    Inventors: Mitsuru Tanaka, Tatsuo Yamaya, Takuo Nakazeko, Shinichi Nakagawa, Masahiro Oda
  • Patent number: 10389340
    Abstract: A delay circuit and an ultrasonic imaging apparatus with the higher-accuracy delay time, the longer maximum delay time, and the lower power consumption are provided. An input line to which an analog input signal is input, a plurality of analog signal memory devices, an output line, a plurality of sampling switches that control connection/disconnection between the input line and the plurality of analog signal memory devices, a plurality of output switches that control connection/disconnection between the plurality of analog signal memory devices and the output line, and a clock generation part that generates sampling switch control signals for controlling the sampling switches and output switch control signals for controlling the output switches are provided, and phase of the sampling switch control signals may be shifted with respect to phase of the output switch control signals.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: August 20, 2019
    Assignee: HITACHI, LTD.
    Inventor: Tatsuo Nakagawa
  • Publication number: 20190128908
    Abstract: A sample liquid-surface position measurement device includes: a first light source that illuminates a side face of a container containing a sample; a first optical measurement sensor that is located on the opposite side of the container from the first light source, and measures transmitted light from the first light source; a first label position measuring unit that measures a position of a label affixed to the container; and an analysis section that calculates a liquid-surface position or an interface position of the sample in the container, from transmitted-light intensity data in a longitudinal direction of the container which is measured by the first optical measurement sensor, and from the position of the label in the longitudinal direction of the container which is measured by the first label position measuring unit.
    Type: Application
    Filed: April 11, 2017
    Publication date: May 2, 2019
    Inventors: Tatsuo NAKAGAWA, Kiyotaka SUGIYAMA, Tsukasa SUENARI, Iwao SUZUKI
  • Publication number: 20180248469
    Abstract: A conventional power supply device has a problem in miniaturization. A power supply device generates a prediction value of an error signal from first and second error signals, and controls an output voltage so that the prediction value lies between first and second threshold values. The first error signal is obtained by converting an error voltage based on the difference between the output voltage and a reference voltage at a first timing. The second error signal is obtained by converting an error voltage based on the difference between the output voltage and the reference voltage at a second timing.
    Type: Application
    Filed: April 26, 2018
    Publication date: August 30, 2018
    Inventors: Ming LIU, Tatsuo NAKAGAWA, Kenichi OSADA
  • Publication number: 20180192994
    Abstract: An ultrasound diagnosis device includes: an ultrasound probe which transmits an ultrasound wave toward a examinee and receives a reflected wave from the examinee; and a main device which controls the transmitting and receiving of the ultrasound waves from the ultrasound probe and is operated to receive a receiving signal obtained by receiving the reflected wave from the examinee by the ultrasound probe, to generate an ultrasound image of the examinee, and to display the ultrasound image on a display screen, wherein the ultrasound probe includes a plurality of subarrays having a plurality of element circuits transmitting and receiving ultrasound signals and a plurality of reference voltage sources, and the plurality of subarrays and the plurality of reference voltage sources have a one-to-one correspondence.
    Type: Application
    Filed: October 4, 2016
    Publication date: July 12, 2018
    Inventors: Yusaku KATSUBE, Tatsuo NAKAGAWA, Yasuyuki OKUMA, Yohei NAKAMURA, Takahide TERADA, Shinya KAJIYAMA, Takuma NISHIMOTO, Yutaka IGARASHI
  • Patent number: 9973074
    Abstract: A conventional power supply device has a problem in miniaturization. A power supply device generates a prediction value of an error signal from first and second error signals, and controls an output voltage so that the prediction value lies between first and second threshold values. The first error signal is obtained by converting an error voltage based on the difference between the output voltage and a reference voltage at a first timing. The second error signal is obtained by converting an error voltage based on the difference between the output voltage and the reference voltage at a second timing.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: May 15, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Ming Liu, Tatsuo Nakagawa, Kenichi Osada
  • Patent number: 9880082
    Abstract: A detection device configured to detect each color of a plurality of components of a biological-sample is provided. The detection device executes the detection process with respect to the container which stores the sample containing the first and the second components. The detection device includes an image pickup device for picking up an image of the container, a background section serving as background of the image pickup section, and a detection section for detecting color of the first component of the sample. The container is disposed between the image pickup section and the background section. The detection section is configured to identify a first region of the first component having the label attached to the container as background, and a second region of the first component having the background section as background so as to detect color information on the first component from at least one region of the first and the second regions.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: January 30, 2018
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kanako Esaki, Tatsuo Nakagawa
  • Patent number: 9725753
    Abstract: Provided is a device that, on the basis of a measurement result of a current that has a low value and a wide distribution, identifies the composition of biological molecules passing through a nanoparticle path. This biomolecule information analysis device obtains a current value by applying an electrical field to biomolecules passing through a gap between a first electrode and a second electrode, and identifies the structure of the biomolecules by integrating the current value and making a comparison with a reference value (see FIG. 1).
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: August 8, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Ono, Tatsuo Nakagawa, Yoshimitsu Yanagawa, Takayuki Kawahara, Akira Kotabe, Riichiro Takemura
  • Patent number: 9728060
    Abstract: The present invention is a system for monitoring a health state of a subject. The system is provided with: a measuring unit that chronologically measures the position of the subject in a facility in which the subject resides or stays; and an information processing unit that determines a health state of the subject by determining whether a chronological change in the position of the subject satisfies a predetermined determination condition.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: August 8, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Tomoyuki Ishii, Tatsuo Nakagawa, Masayoshi Ishibashi, Midori Kato
  • Publication number: 20170222540
    Abstract: A conventional power supply device has a problem in miniaturization. A power supply device generates a prediction value of an error signal from first and second error signals, and controls an output voltage so that the prediction value lies between first and second threshold values. The first error signal is obtained by converting an error voltage based on the difference between the output voltage and a reference voltage at a first timing. The second error signal is obtained by converting an error voltage based on the difference between the output voltage and the reference voltage at a second timing.
    Type: Application
    Filed: April 18, 2017
    Publication date: August 3, 2017
    Inventors: Ming LIU, Tatsuo NAKAGAWA, Kenichi OSADA
  • Patent number: 9709497
    Abstract: By use of a pump light source for repeatedly generating a pump light pulse and a probe light source for repeatedly generating a probe light pulse in a shorter repetition time interval than the pump light pulse, the pump light pulse is repeatedly irradiated on a sample, and the probe light pulse is repeatedly irradiated on the sample every time the pump pulse is irradiated. An intensity of a probe light pulse having passed through the sample is detected. A shift in a delay time of the probe light pulse with respect to the pump light pulse is measured every time the pump light pulse is irradiated. Transient absorption measurement data of the sample is obtained based on the detected data of the probe light pulse intensity obtained in higher time density than repetition time density of the probe light pulse based on the measured shift in the delay time.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: July 18, 2017
    Assignee: UNISOKU CO., LTD.
    Inventors: Tatsuo Nakagawa, Kido Okamoto, Hiroaki Hanada
  • Patent number: 9658631
    Abstract: A conventional power supply device has a problem in miniaturization. A power supply device generates a prediction value of an error signal from first and second error signals, and controls an output voltage so that the prediction value lies between first and second threshold values. The first error signal is obtained by converting an error voltage based on the difference between the output voltage and a reference voltage at a first timing. The second error signal is obtained by converting an error voltage based on the difference between the output voltage and the reference voltage at a second timing.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: May 23, 2017
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Ming Liu, Tatsuo Nakagawa, Kenichi Osada
  • Publication number: 20170074794
    Abstract: By use of a pump light source for repeatedly generating a pump light pulse and a probe light source for repeatedly generating a probe light pulse in a shorter repetition time interval than the pump light pulse, the pump light pulse is repeatedly irradiated on a sample, and the probe light pulse is repeatedly irradiated on the sample every time the pump pulse is irradiated. An intensity of a probe light pulse having passed through the sample is detected. A shift in a delay time of the probe light pulse with respect to the pump light pulse is measured every time the pump light pulse is irradiated. Transient absorption measurement data of the sample is obtained based on the detected data of the probe light pulse intensity obtained in higher time density than repetition time density of the probe light pulse based on the measured shift in the delay time.
    Type: Application
    Filed: November 22, 2016
    Publication date: March 16, 2017
    Applicant: UNISOKU CO., LTD.
    Inventors: Tatsuo NAKAGAWA, Kido OKAMOTO, Hiroaki HANADA
  • Patent number: 9572491
    Abstract: A vital signal measurement system including a plurality of terminals aims to facilitate synchronization of each terminal with respect to other terminals. Each of the plurality of terminals (102) is provided with a first vital signal sensor (201) for measuring a vital signal, a first memory (205) for storing a first data which is based on the vital signal, and a first radio communication unit (206) for communicating with other terminals by radio. The first data is applied with a sequence number corresponding to the first data and the number indicates an order in which the first data is acquired. A first terminal (102b) included in the plurality of terminals performs resetting of the sequence number triggered by the synchronous signal which is received by the first radio communication unit.
    Type: Grant
    Filed: September 3, 2012
    Date of Patent: February 21, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuo Nakagawa, Tomoyuki Ishii, Akira Kotabe
  • Publication number: 20160363657
    Abstract: A compact delay circuit that can dynamically change delay time is configured. A probe includes an analog memory unit that accumulates electric charges corresponding to a reflected wave of an ultrasonic wave produced by a difference between the acoustic impedances on a plurality of capacitors 303 and in turn outputs the electric charges accumulated on the capacitors 303 to an analog memory unit 205. In accumulating electric charges, when a control signal Ctls_l that increases delay time of the reflected wave is inputted, the analog memory unit 205 accumulates the same electric charges on two or more of the capacitors 303 for a preset period, or in outputting electric charges, when a control signal Ctlo_l is inputted, the analog memory unit 205 outputs the electric charges accumulated on one of the capacitors 303 for a preset period.
    Type: Application
    Filed: February 26, 2014
    Publication date: December 15, 2016
    Inventors: Tatsuo NAKAGAWA, Hiroshi MASUZAWA, Shinya KAJIYAMA
  • Publication number: 20160109350
    Abstract: A detection device configured to detect each color of a plurality of components of a biological-sample is provided. The detection device executes the detection process with respect to the container which stores the sample containing the first and the second components. The detection device includes an image pickup device for picking up an image of the container, a background section serving as background of the image pickup section, and a detection section for detecting color of the first component of the sample. The container is disposed between the image pickup section and the background section. The detection section is configured to identify a first region of the first component having the label attached to the container as background, and a second region of the first component having the background section as background so as to detect color information on the first component from at least one region of the first and the second regions.
    Type: Application
    Filed: July 2, 2014
    Publication date: April 21, 2016
    Inventors: Kanako ESAKI, Tatsuo NAKAGAWA