Patents by Inventor Kazuhito Murata

Kazuhito Murata 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: 11768102
    Abstract: A vibration measurement apparatus 30 includes a detection unit 31 that acquires, as a pattern image from an image capturing apparatus 20 that shoots a measurement target surface of a structure 40, an image of the measurement target surface onto which pattern light is projected by an optical apparatus 10, and detects the pattern light from the pattern image, an estimation unit 32 that estimates an angle between the normal of the image capturing surface and the normal of the measurement target surface, based on the pattern light, an image conversion unit 33 that converts the shot image into an image that would be obtained were the normal of the measurement target surface coincident with the normal of the image capturing surface of the image capturing apparatus 20, using the estimated angle, and a vibration measurement unit 34 that measures the vibration of the structure 40 using the converted image.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: September 26, 2023
    Assignee: NEC CORPORATION
    Inventors: Gaku Nakano, Masahiko Ohta, Asuka Ishii, Kazuhito Murata
  • Patent number: 11519780
    Abstract: The measurement system 100 includes: a measurement apparatus 20 that measures vibrations of an object 40; an imaging apparatus 30 that is located so as to capture an image of the measurement apparatus 20; and a correction processing apparatus 10. the correction processing apparatus 10 includes: a displacement calculation unit 11 that calculates a displacement of the measurement apparatus 20 based on time-series images of the measurement apparatus 20 output from the imaging apparatus 30; a movement amount calculation unit 12 that calculates an amount of movement of the measurement apparatus 20 relative to the imaging apparatus 30, based on the displacement; and a correction processing unit 13 that corrects vibrations of the object measured by the measurement apparatus 20, using the calculated amount of movement of the measurement apparatus 20.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: December 6, 2022
    Assignee: NEC CORPORATION
    Inventors: Gaku Nakano, Kazuhito Murata, Masahiko Ohta
  • Publication number: 20220245978
    Abstract: A gate apparatus (10) includes an imaging unit (102) that images a person passing through a passage leading to a gate, an acquisition unit (104) that acquires a detection result from a detection unit which is provided on a floor of the passage, and a control unit (106) that controls, by using the detection result acquired by the acquisition unit (104), imaging timing of an imaging unit (102).
    Type: Application
    Filed: February 6, 2020
    Publication date: August 4, 2022
    Applicant: NEC Corporation
    Inventor: Kazuhito MURATA
  • Patent number: 11178333
    Abstract: A vibration measurement system comprises an image capturing apparatus, a distance measuring apparatus, a sensor that outputs a signal according to an inclination of the image capturing apparatus relative to the vertical direction, and a vibration measurement apparatus. The vibration measurement apparatus includes calculating an angle formed by the normal of an image capturing surface of the image capturing apparatus and the normal of the measurement target surface that the image capturing apparatus shoots, based on the signal output by the sensor, converting the image obtained that the image capturing apparatus shoots into an image that would be obtained were the normal of the measurement target surface coincident with the normal of the image capturing surface of the image capturing apparatus, using the calculated angle, and measuring vibration of the structure, using the converted image and the measured distance from the image capturing apparatus to the measurement target surface.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: November 16, 2021
    Assignee: NEC CORPORATION
    Inventors: Gaku Nakano, Kazuhito Murata, Asuka Ishii, Masahiko Ohta
  • Publication number: 20210033451
    Abstract: A vibration measurement apparatus 30 includes a detection unit 31 that acquires, as a pattern image from an image capturing apparatus 20 that shoots a measurement target surface of a structure 40, an image of the measurement target surface onto which pattern light is projected by an optical apparatus 10, and detects the pattern light from the pattern image, an estimation unit 32 that estimates an angle between the normal of the image capturing surface and the normal of the measurement target surface, based on the pattern light, an image conversion unit 33 that converts the shot image into an image that would be obtained were the normal of the measurement target surface coincident with the normal of the image capturing surface of the image capturing apparatus 20, using the estimated angle, and a vibration measurement unit 34 that measures the vibration of the structure 40 using the converted image.
    Type: Application
    Filed: March 29, 2018
    Publication date: February 4, 2021
    Applicant: NEC Corporation
    Inventors: Gaku NAKANO, Masahiko OHTA, Asuka ISHII, Kazuhito MURATA
  • Publication number: 20210029297
    Abstract: A vibration measurement system comprises an image capturing apparatus, a distance measuring apparatus, a sensor that outputs a signal according to an inclination of the image capturing apparatus relative to the vertical direction, and a vibration measurement apparatus. The vibration measurement apparatus includes calculating an angle formed by the normal of an image capturing surface of the image capturing apparatus and the normal of the measurement target surface that the image capturing apparatus shoots, based on the signal output by the sensor, converting the image obtained that the image capturing apparatus shoots into an image that would be obtained were the normal of the measurement target surface coincident with the normal of the image capturing surface of the image capturing apparatus, using the calculated angle, and measuring vibration of the structure, using the converted image and the measured distance from the image capturing apparatus to the measurement target surface.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 28, 2021
    Applicant: NEC Corporation
    Inventors: Gaku NAKANO, Kazuhito MURATA, Asuka ISHII, Masahiko OHTA
  • Publication number: 20200393289
    Abstract: A measurement system 100 includes: a measurement apparatus 20 that measures vibrations of an object 40; an imaging apparatus 30 that is fixed to the measurement apparatus 20 so as to be able to capture an image of a preset reference face 50; and a correction processing apparatus 10. The correction processing apparatus 10 includes: a displacement calculation unit 11 that calculates a displacement of the reference face 50 based on time-series images of the reference face 50; a movement amount calculation unit 12 that calculates an amount of movement of the measurement apparatus 30 relative to the reference face 50, based on the displacement and preset imaging information regarding the imaging apparatus 30; and a correction processing unit 13 that corrects vibrations measured by the measurement apparatus 20, so as to be vibrations relative to the reference face 50, using the calculated amount of movement.
    Type: Application
    Filed: November 14, 2017
    Publication date: December 17, 2020
    Applicant: NEC Corporation
    Inventors: Masahiko OHTA, Gaku NAKANO, Kazuhito MURATA
  • Publication number: 20200348168
    Abstract: The measurement system 100 includes: a measurement apparatus 20 that measures vibrations of an object 40; an imaging apparatus 30 that is located so as to capture an image of the measurement apparatus 20; and a correction processing apparatus 10. the correction processing apparatus 10 includes: a displacement calculation unit 11 that calculates a displacement of the measurement apparatus 20 based on time-series images of the measurement apparatus 20 output from the imaging apparatus 30; a movement amount calculation unit 12 that calculates an amount of movement of the measurement apparatus 20 relative to the imaging apparatus 30, based on the displacement; and a correction processing unit 13 that corrects vibrations of the object measured by the measurement apparatus 20, using the calculated amount of movement of the measurement apparatus 20.
    Type: Application
    Filed: November 14, 2017
    Publication date: November 5, 2020
    Applicant: NEC Corporation
    Inventors: Gaku NAKANO, Kazuhito MURATA, Masahiko OHTA
  • Patent number: 9278705
    Abstract: An information presentation device transmits information of a car navigation system, installed in a vehicle, to a driver in form of tactile stimuli, wherein a controller controls a plurality of vibrators attached to a steering wheel. The vibrators are arranged in proximity to vibration transmitters, corresponding to holding parts of a steering wheel, so that they are controlled with desired vibration intensity and vibration start timing in response to drive signals from the controller. Two vibrators are arranged in the holding parts of a steering wheel which come in contact with driver's hands and are controlled to generate a virtual vibrating source, thus rendering a driver feeling a sensation as if a vibrating source is moving in upward-downward directions, left-right directions, and far-near directions in the front side of a driver. Thus, it is possible to present accurate information with a small amount of energy consumption in driving vibrators.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: March 8, 2016
    Assignee: NEC CORPORATION
    Inventors: Kazuhito Murata, Hideo Mitsuhashi, Shin Norieda
  • Publication number: 20140125608
    Abstract: A tablet device includes: a pressing operation unit that receives a pressing operation from an indicator; and a controller that detects a pressing position of the indicator with respect to the pressing operation unit.
    Type: Application
    Filed: January 6, 2012
    Publication date: May 8, 2014
    Applicant: NEC CORPORATION
    Inventor: Kazuhito Murata
  • Publication number: 20130338963
    Abstract: An input mechanism capable of providing a sense of touch according to an input operation to a user is provided. An input mechanism of the present invention includes: an indicating tool detecting unit arranged in a predetermined area to detect existence of an indicating tool on the predetermined area; an elastic member arranged in an area circled by the indicating tool detecting unit; a pressing detection unit to detect the elastic member having been pressed; a calculation unit to calculate a moving speed of the indicating tool from a detection result by the indicating tool detecting unit and a detection result by the pressing detection unit; a signal output unit to output a drive signal, upon the pressing detection unit detecting the elastic member having been pressed; and a driving unit to apply a force to the elastic member by carrying out driving based on the drive signal. The signal output unit changes the drive signal to be outputted based on a moving speed calculated by the calculation unit.
    Type: Application
    Filed: November 15, 2011
    Publication date: December 19, 2013
    Applicant: NEC CORPORATION
    Inventor: Kazuhito Murata
  • Publication number: 20130292237
    Abstract: Provided are a switch and input device that can give a user a switch pressing sensation and push-back sensation and that are highly quiet. This switch 1 comprises a pressure transmitting member 2, which is formed from a medium that transfers changes in pressure and which transfers pressure change in a prescribed direction when pressed, and a push-back member 3 that is disposed adjacent to the pressure transmitting member 2 and pushes the pressure transmitting member 2 back in the direction opposite to the prescribed direction when transmission of a pressure change in the prescribed direction is detected.
    Type: Application
    Filed: December 28, 2011
    Publication date: November 7, 2013
    Applicant: NEC Corporation
    Inventors: Kan Arai, Kazuhito Murata
  • Patent number: 8308453
    Abstract: A pump chamber (15) is formed between a piezoelectric vibrator (7) and a valve main plate (10). The valve main plate (10) includes an inlet port (13) at its central portion, and an outlet port (14) in its peripheral portion, and the inlet port (13) is made in a smaller diameter than the outlet port (14). On the valve main plate (10) an inflow check valve (11) and an outflow check valve (12) are provided, so that when the inflow check valve (11) and the outflow check valve (12) open and close in response to the vibration of the piezoelectric vibrator (7), a fluid is introduced into and discharged from the pump chamber (15).
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: November 13, 2012
    Assignee: NEC Corporation
    Inventors: Mitsuru Yamamoto, Kazuhito Murata, Sakae Kitajo
  • Publication number: 20120242465
    Abstract: An information presentation device transmits information of a car navigation system, installed in a vehicle, to a driver in form of tactile stimuli, wherein a controller controls a plurality of vibrators attached to a steering wheel. The vibrators are arranged in proximity to vibration transmitters, corresponding to holding parts of a steering wheel, so that they are controlled with desired vibration intensity and vibration start timing in response to drive signals from the controller. Two vibrators are arranged in the holding parts of a steering wheel which come in contact with driver's hands and are controlled to generate a virtual vibrating source, thus rendering a driver feeling a sensation as if a vibrating source is moving in upward-downward directions, left-right directions, and far-near directions in the front side of a driver. Thus, it is possible to present accurate information with a small amount of energy consumption in driving vibrators.
    Type: Application
    Filed: December 7, 2010
    Publication date: September 27, 2012
    Applicant: NEC CORPORATION
    Inventors: Kazuhito Murata, Hideo Mitsuhashi, Shin Norieda
  • Publication number: 20100074775
    Abstract: A pump chamber (15) is formed between a piezoelectric vibrator (7) and a valve main plate (10). The valve main plate (10) includes an inlet port (13) at its central portion, and an outlet port (14) in its peripheral portion, and the inlet port (13) is made in a smaller diameter than the outlet port (14). On the valve main plate (10) an inflow check valve (11) and an outflow check valve (12) are provided, so that when the inflow check valve (11) and the outflow check valve (12) open and close in response to the vibration of the piezoelectric vibrator (7), a fluid is introduced into and discharged from the pump chamber (15).
    Type: Application
    Filed: January 15, 2008
    Publication date: March 25, 2010
    Inventors: Mitsuru Yamamoto, Kazuhito Murata, Sakae Kitajo
  • Publication number: 20030076661
    Abstract: A bonding apparatus includes a bonding arm which is swayable about an axis, a horn which is fixed at the end of the bonding arm to perform ultrasonic bonding, a tool fixed on the horn, and a motor on the bonding arm at the opposite end to the horn. The bonding head both moves and bonds an electronic element.
    Type: Application
    Filed: October 17, 2002
    Publication date: April 24, 2003
    Applicant: NEC CORPORATION
    Inventors: Kazuhito Murata, Akira Takeishi
  • Patent number: 5031893
    Abstract: In a printer, a unit for turning over a sheet comprises: a conveying roll provided downstream of a printer head; a top roll and a bottom roll which are rotatably coupled to the front end and the rear end of a swingable link, respectively; and at least one elastic endless belt reeved around the top roll and bottom roll, the swingable link being swingable about the axis of the top roll with the top roll into contact with the conveying roll through the endless belt, and a control mechanism for operating the link so that it is swung down for a first half of a period of time for which a sheet passes through the conveying roll and the top roll, and swung up for the second half.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: July 16, 1991
    Assignee: Kanzaki Paper Mfg. Co., Ltd.
    Inventors: Eiji Yoneda, Kazuhito Murata
  • Patent number: 4835547
    Abstract: A thermal printer with a mechanism for preventing recording sheet from meandering. In order to perform the mechanism, the thermal printer is provided with a thermal line head, a platen roller and a holding shaft which is perpendicular to the surface of a recording sheet and rotatable about the axis thereof, the holding shaft being engaged with the thermal line head in such a manner that the thermal line head is horizontally swingable about the axis of the holding shaft with the positional relation between the recording sheet and the thermal line head unchanged, and subjected to frictional force to return the thermal line head to its standard position, so that printing operation is correctly carried out all times and the recording sheet is returned to its standard position, that is, the meandering of the recording sheet is prevented. This mechanism also can be performed by providing the thermal printer with a brake shoe engaged with the holding shaft as described above.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: May 30, 1989
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Akira Okushi, Shigeharu Myogatani, Kazuhito Murata, Yoshitsugu Hamaguchi, Koichi Tanaka