Patents by Inventor Masafumi Watanabe

Masafumi Watanabe 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: 20210286344
    Abstract: In order to monitor the operational status of a plant, a plant monitoring apparatus 10 includes: a control program acquisition unit 11 configured to acquire a control program for controlling the plant on the basis of sensor data from a sensor installed in the plant; a causal relationship extraction unit 12 configured to extract, from the control program, causal relationships between a plurality of signals that are used in the plant; a causal relationship specification unit 13 configured to specify the current state of the plurality of signals and compare the specified state and the extracted causal relationships to specify a causal relationship corresponding to the specified state; and a display unit 14 configured to display the specified causal relationship on a screen.
    Type: Application
    Filed: July 26, 2018
    Publication date: September 16, 2021
    Applicant: NEC Corporation
    Inventor: Masafumi WATANABE
  • Publication number: 20210263496
    Abstract: An analysis assistance apparatus 10 includes: a control program obtainment unit 11 that obtains a control program of a plant based on sensor data from a sensor installed in the plant; an event information obtainment unit 12 that obtains event information, which includes a variable that defines a state of the plant when a predetermined event has occurred and a value thereof, as information necessary for searching the control program for a safety barrier for avoiding the occurrence of the predetermined event in the plant; and a safety barrier search unit 13 that extracts, from the control program, a causal relationship between an input variable and an output variable, and searches the control program for the safety barrier based on the variable and the value included in the event information and on the extracted causal relationship.
    Type: Application
    Filed: July 26, 2018
    Publication date: August 26, 2021
    Applicant: NEC Corporation
    Inventor: Masafumi WATANABE
  • Patent number: 10931468
    Abstract: Provided is an analysis system configured to obtain an encryption key for encryption communication between an information communication apparatus and a communication network, from memory space provided in the information communication apparatus.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: February 23, 2021
    Assignee: NEC CORPORATION
    Inventors: Masato Yamane, Yuki Ashino, Masafumi Watanabe
  • Publication number: 20200143050
    Abstract: Provided is an analysis apparatus including a first storage device configured to store data, and a processing circuitry that is configured to control the own apparatus to function as: a dispatcher that is communicably connected to an analysis target device that performs operational processing by use of a processor and a memory unit, and generates collection target data for reproducing at least part of a state of the operational processing in the analysis target device, in accordance with data being transmitted and received between the processor and the memory unit; a data mapper that assigns, to one or more areas included in the collection target data, tag information for identifying the area; and a data writer that saves the one or more areas into the first storage device in accordance with a first policy defining a procedure of saving the collection target data into the first storage device.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 7, 2020
    Applicant: NEC Corporation
    Inventors: Masato YAMANE, Yuki ASHINO, Yoichiro MORITA, Masafumi WATANABE
  • Patent number: 10554383
    Abstract: An analysis system that is able to obtain correct encryption key is provided. The analysis system includes a processing circuitry configured to function as a cryptanalysis processing unit. The cryptanalysis processing unit includes: a key candidate extraction unit that is configured to extract, from second data, one or more candidates of key data that include an encryption key that enables to decrypt first data encrypted by a specific encryption scheme, based on data indicating a feature of the key data; and a decryption unit that is configured to extract, from the extracted candidates of key data, correct key data that enables to correctly decrypt the encrypted first data, based on a result of decrypting the first data by use of the extracted candidates of key data.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: February 4, 2020
    Assignee: NEC CORPORATION
    Inventors: Masato Yamane, Yuki Ashino, Masafumi Watanabe
  • Patent number: 10536261
    Abstract: Provided is an analysis system including a memory acquisition unit that is configured to acquire at least part of data stored in a memory unit in an information communication apparatus including a computing unit and the memory unit; a communication processing unit that is configured to instruct the memory acquisition unit to acquire data stored in the memory unit when determining that key data including an encryption key for cryptographic communication protocol are stored in the memory unit; and a cryptanalysis unit that is configured to extract one or more key data candidates that are candidates of the key data, from the stored in the memory unit, and extract, from one or more of the key data candidates, correct key data that enables to decrypt correctly the encrypted communication data. The communication processing unit is further configured to execute specific processing according to the decrypted communication data.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: January 14, 2020
    Assignee: NEC CORPORATION
    Inventors: Masato Yamane, Yuki Ashino, Masafumi Watanabe
  • Publication number: 20200012788
    Abstract: Provided is an analysis device with which it is possible to find information relating to the intention and purpose of an attacker. The analysis device is provided with a purpose estimating means that estimates the purpose of behavior, based on predetermined behavior in the computer and knowledge information that includes the relation between the behavior and the purpose of executing the behavior.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 9, 2020
    Applicant: NEC Corporation
    Inventors: Masafumi WATANABE, Yuki ASHINO
  • Patent number: 10528730
    Abstract: Provided is an analysis apparatus including a first storage device configured to store data, and a processing circuitry that is configured to control the own apparatus to function as: a dispatcher that is communicably connected to an analysis target device that performs operational processing by use of a processor and a memory unit, and generates collection target data for reproducing at least part of a state of the operational processing in the analysis target device, in accordance with data being transmitted and received between the processor and the memory unit; a data mapper that assigns, to one or more areas included in the collection target data, tag information for identifying the area; and a data writer that saves the one or more areas into the first storage device in accordance with a first policy defining a procedure of saving the collection target data into the first storage device.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: January 7, 2020
    Assignee: NEC CORPORATION
    Inventors: Masato Yamane, Yuki Ashino, Yoichiro Morita, Masafumi Watanabe
  • Patent number: 10466271
    Abstract: A scanning probe microscope includes: a cantilever; a cantilever supporting portion; a movement mechanism that moves a position of the cantilever; a light source that emits detection light; a detector that receives the detection light reflected on a reflecting surface of the cantilever; an objective lens; and a controller that controls the movement mechanism to perform a process including: detecting a spot position of a spot light of the detection light; detecting a position of the cantilever from an image captured by the imaging device; and controlling the movement mechanism based on the spot position, the position of the cantilever, an incident angle of the detection light, and the attachment angle such that the detection light is reflected on the reflecting surface when the cantilever is attached to the cantilever supporting portion.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: November 5, 2019
    Assignee: Hitachi High-Tech Science Corporation
    Inventors: Masafumi Watanabe, Toshihiro Ueno, Susumu Ito, Shoichi Hasegawa
  • Patent number: 10360378
    Abstract: Provided is an analysis device with which it is possible to find information relating to the intention and purpose of an attacker. The analysis device is provided with a purpose estimating means that estimates the purpose of behavior, based on predetermined behavior in the computer and knowledge information that includes the relation between the behavior and the purpose of executing the behavior.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: July 23, 2019
    Assignee: NEC Corporation
    Inventors: Masafumi Watanabe, Yuki Ashino
  • Publication number: 20190027353
    Abstract: Disclosed is an apparatus and method for analyzing an evolved gas, wherein the precision of detection of a gas component is improved without enlarging the apparatus. The apparatus includes a gas component evolving unit, a detection member for detecting the gas component, and a mixed gas channel for allowing a mixed gas containing the gas component and carrier gas to flow therethrough, and further includes a branch channel branched from the mixed gas channel, an inert gas channel for allowing an inert gas to flow therethrough, a first flow rate regulator for adjusting the flow rate of the carrier gas, a second flow rate regulator for adjusting the flow rate of the inert gas, and a flow rate control unit for controlling the second flow rate regulator such that the flow rate of the mixed gas guided to the detection member is a predetermined value.
    Type: Application
    Filed: July 20, 2018
    Publication date: January 24, 2019
    Inventors: Ryusuke HIROSE, Hideyuki AKIYAMA, Noriaki SAKAI, Masafumi WATANABE
  • Patent number: 10161958
    Abstract: A three-dimensional fine movement device includes a moving body, a fixation member to which the moving body is fixed, a three-dimensional fine movement unit, to which the fixation member is fixed, and which allows for three-dimensional fine movement of the moving body with the fixation member interposed therebetween, a base member to which the three-dimensional fine movement unit is fixed, and movement amount detecting means that is fixed to the base member to detect a movement amount of the fixation member.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: December 25, 2018
    Assignee: Hitachi High-Tech Science Corporation
    Inventors: Masatsugu Shigeno, Kazutoshi Watanabe, Masafumi Watanabe
  • Patent number: 10151773
    Abstract: According to this invention, a scanning probe microscope for scanning a surface of a sample with a probe by bringing the probe into contact with the surface of the sample, comprises a cantilever having the probe at its tip; a displacement detection unit to detect both a bending amount and a torsion amount of the cantilever; and a contact determination unit to determine a primary contact of the probe with the surface of the sample, based on the bending amount and the torsion amount detected by the displacement detection unit in all directions from an undeformed condition of the cantilever.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: December 11, 2018
    Assignee: Hitachi High-Tech Science Corporation
    Inventors: Masatsugu Shigeno, Kazutoshi Watanabe, Masafumi Watanabe, Hiroyoshi Yamamoto, Kazuo Chinone
  • Patent number: 10063277
    Abstract: A clock control circuit includes a clock controller which disperses a harmonic of a clock signal in a used frequency band of a reception signal and controls an amplitude of a harmonic remaining in the used frequency band after the dispersion on a basis of a spread frequency used for the dispersion and a spread width of the harmonic.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: August 28, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Atsushi Nakamura, Masahiro Toyama, Masafumi Watanabe, Kota Toida, Aya Ohmae, Wen Li
  • Patent number: 9899198
    Abstract: Disclosed herein is a method for analyzing evolved gas and an evolved gas analyzer, the method correcting detection sensitivity differences in analysis devices, day-to-day variations thereof, thereby quantifying a measurement target with high accuracy. The method for analyzing evolved gas of the apparatus including: a sample holder; a heating unit evolving a gas component; an ion source generating ions by ionizing the gas component; a mass spectrometer detecting the gas component; and a gas channel through which mixed gas flows, the method including: operating a discharged flow rate controlling process of controlling a flow rate of the mixed gas discharged to outside; operating a sample holder cooling process of cooling the sample holder by bringing the sample holder into contact with a cooling unit; and operating a correction process including: correcting a mass spectrum position; calculating a sensitivity correction factor; and calculating a heating correction factor.
    Type: Grant
    Filed: November 19, 2016
    Date of Patent: February 20, 2018
    Assignee: HITACHI HIGH-TECH SCIENCE CORPORATION
    Inventors: Hideyuki Akiyama, Kentaro Yamada, Masafumi Watanabe, Toshitada Takeuchi, Kantaro Maruoka
  • Patent number: 9831077
    Abstract: Disclosed herein is an evolved gas analyzer and a method for analyzing evolved gas, the apparatus enhancing detection accuracy for gas component without providing the apparatus in a large size. The apparatus includes a heating unit evolving a gas component by heating a sample, a detecting means detecting the gas component, a gas channel connecting the heating unit to the detecting means, the gas channel through which mixed gas of the gas component and carrier gas flows, wherein the gas channel includes a branching channel being open to outside and including a discharge flow rate controlling device, and a flow rate control device controlling the discharge flow rate controlling device based on a detection signal received from the detecting means so as to control the detection signal to be within a predetermined range.
    Type: Grant
    Filed: November 19, 2016
    Date of Patent: November 28, 2017
    Assignee: HITACHI HIGH-TECH SCIENCE CORPORATION
    Inventors: Hideyuki Akiyama, Masafumi Watanabe, Kantaro Maruoka
  • Patent number: 9823208
    Abstract: A method includes: removing at least a part of an oxide formed on a surface of the sample by relatively scanning the surface of the sample in X and Y directions parallel to the surface while bringing a probe into contact with the surface of the sample; detecting a signal by bringing the probe into contact with the surface of the sample from which at least a part of the oxide is removed at a predetermined detection position in the X direction or the Y direction while a bias voltage is applied to the sample; calculating a spreading resistance value based on the signal; and retracting the probe to keep the probe relatively away from the surface in a Z direction perpendicular to the surface while relatively moving the probe to a next detection position to start scanning the sample from the next detection position.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: November 21, 2017
    Assignee: Hitachi High-Tech Science Corporation
    Inventors: Masafumi Watanabe, Takehiro Yamaoka
  • Publication number: 20170310356
    Abstract: A clock control circuit includes a clock controller which disperses a harmonic of a clock signal in a used frequency band of a reception signal and controls an amplitude of a harmonic remaining in the used frequency band after the dispersion on a basis of a spread frequency used for the dispersion and a spread width of the harmonic.
    Type: Application
    Filed: July 13, 2017
    Publication date: October 26, 2017
    Inventors: Atsushi NAKAMURA, Masahiro TOYAMA, Masafumi WATANABE, Kota TOIDA, Aya OHMAE, Wen LI
  • Publication number: 20170285067
    Abstract: According to this invention, a scanning probe microscope for scanning a surface of a sample with a probe by bringing the probe into contact with the surface of the sample, comprises a cantilever having the probe at its tip; a displacement detection unit to detect both a bending amount and a torsion amount of the cantilever; and a contact determination unit to determine a primary contact of the probe with the surface of the sample, based on the bending amount and the torsion amount detected by the displacement detection unit in all directions from an undeformed condition of the cantilever.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 5, 2017
    Applicant: HITACHI HIGH-TECH SCIENCE CORPORATION
    Inventors: Masatsugu Shigeno, Kazutoshi Watanabe, Masafumi Watanabe, Hiroyoshi Yamamoto, Kazuo Chinone
  • Publication number: 20170288854
    Abstract: Provided is an analysis system including a memory acquisition unit that is configured to acquire at least part of data stored in a memory unit in an information communication apparatus including a computing unit and the memory unit; a communication processing unit that is configured to instruct the memory acquisition unit to acquire data stored in the memory unit when determining that key data including an encryption key for cryptographic communication protocol are stored in the memory unit; and a cryptanalysis unit that is configured to extract one or more key data candidates that are candidates of the key data, from the stored in the memory unit, and extract, from one or more of the key data candidates, correct key data that enables to decrypt correctly the encrypted communication data. The communication processing unit is further configured to execute specific processing according to the decrypted communication data.
    Type: Application
    Filed: September 17, 2015
    Publication date: October 5, 2017
    Applicant: NEC Corporation
    Inventors: Masato YAMANE, Yuki ASHINO, Masafumi WATANABE