Patents by Inventor Keizo Kato

Keizo Kato 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: 20200134313
    Abstract: A computer-implemented detection method includes, in response to inputting a first image including a region of one or more objects to a learned model, identifying a first entire image corresponding to entirety of a first object as a detection candidate, the learned model being generated by learning training data including an image corresponding to a part of an object and an entire image corresponding to entirety of the object, detecting an existing region of the first target object in the first image in accordance with a comparison between the identified first entire image and the region of the one or more target objects, and determining, based on a specific image obtained by invalidating the existing region in the first image, whether another target object is included in the first image.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 30, 2020
    Applicant: FUJITSU LIMITED
    Inventors: Toshio Endoh, Keizo Kato
  • Patent number: 10523365
    Abstract: The procedure includes generating an image to represent a photographing range including at least a part of a range irradiated by light emitted from a light source, information to be transmitted being superimposed on the light, specifying a region where the information is decoded, on the image, and discriminating which of the light source and an object reflecting the light is photographed in the region, based on a similarity between a color of the region and a color of the light emitted from the light source.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: December 31, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Keizo Kato, Kensuke Kuraki, Ryuta Tanaka
  • Patent number: 10460414
    Abstract: A detecting device divides image data into a plurality of areas, wherein the image data is projected by a projecting device and the image data has a plurality of sets of watermark information, in each of which frequency and amplitude are constant and in each of which phase is reversed depending on whether first-type information or second-type information is indicated, and the plurality of sets of watermark information are embedded in the image data in a synchronized manner. The detecting device extracts amplitude of the watermark information included in the areas and identifies, as a target area for extraction, successive areas in which the extracted amplitude of the watermark information is constant. The detecting device extracts the watermark information which is overlapping in the target area for extraction.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: October 29, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Keizo Kato, Kensuke Kuraki, Ryuta Tanaka
  • Publication number: 20190154428
    Abstract: A non-transitory computer-readable recording medium stores therein a position estimation program for causing a computer to execute a process for capturing an image; extracting, from the captured image, an optical signal pattern that identifies an information terminal; estimating a position of the information terminal based on the captured image; and transmitting notification information corresponding to the estimated position to the outside based on the extracted optical signal pattern that identifies the information terminal.
    Type: Application
    Filed: January 18, 2019
    Publication date: May 23, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Keizo Kato, Kensuke KURAKI, RYUTA TANAKA
  • Patent number: 10236979
    Abstract: A transmitter includes a light source which enables changing the characteristic of light, on a time-series basis, and a controller which sets a predetermined duration for a symbol included in information to be transmitted and controls the light source to change the characteristic of the light emitted by the light source, on a time-series basis in accordance with a value of the symbol in the duration. A receiver includes a camera which generates a plurality of images each recording an image capturing range including at least a part of an area irradiated with the light from the transmitter, with a predetermined image capturing period, and a processor configured to extract a feature amount representing the characteristic of the light, from each of the plurality of images, and decode the value of the symbol from a time-series change in the feature amount.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: March 19, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Kensuke Kuraki, Keizo Kato, Ryuta Tanaka
  • Publication number: 20190036646
    Abstract: The procedure includes generating an image to represent a photographing range including at least a part of a range irradiated by light emitted from a light source, information to be transmitted being superimposed on the light, specifying a region where the information is decoded, on the image, and discriminating which of the light source and an object reflecting the light is photographed in the region, based on a similarity between a color of the region and a color of the light emitted from the light source.
    Type: Application
    Filed: July 20, 2018
    Publication date: January 31, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Keizo Kato, Kensuke KURAKI, RYUTA TANAKA
  • Patent number: 10075239
    Abstract: A reproduction device is configured to receive light emitted based on a plurality of signals having a specific amplitude in a specific color space on which information is superimposed, and to reproduce the information based on the received light. The reproduction device includes: a memory; and a processor coupled to the memory and configured to: generate a plurality of signals in the specific color space from the received light, correct the generated plurality of signals based on the specific amplitude, and acquire the information based on the corrected plurality of signals.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: September 11, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Keizo Kato, Kensuke Kuraki, Ryuta Tanaka, Akira Nakagawa
  • Publication number: 20180124476
    Abstract: A system includes a light irradiating device configured to irradiate an object with light to illuminate a mark on the object, and an information processing device storing relation information and control information associated with the object, the relation information indicating a relation between the mark and the object, and the control information indicating a policy whether to distribute an image of the object to at least one device through a network, and configured to acquire the image of the object irradiated with the light to illuminate the mark on the object, extract the mark illuminated by the light on the object, identify the object associated with the extracted mark based on the relation information, and execute a process to control distribution of the image to the at least one device through the network, according to the policy for the image of the object in the control information.
    Type: Application
    Filed: October 18, 2017
    Publication date: May 3, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Akira NAKAGAWA, Keizo Kato, Kensuke KURAKI, RYUTA TANAKA, Toshiyuki Fukuoka
  • Patent number: 9865028
    Abstract: A memory stores video information obtained by photographing an object that reflects light in which embedded information is superimposed onto a plurality of components in a color space. A processor emphasizes a signal obtained from an image included in the video information on the basis of a result of emphasizing a first color component more than a second color component according to a spectral reflection characteristic in a range including the object, and detects the embedded information from the emphasized signal, the first color component and the second color component being from among a plurality of color components that correspond to a plurality of wavelengths, the first color component having a reflectance higher than a reflectance of the second color component. A display device outputs information on the basis of the embedded information detected by the processor.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: January 9, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Keizo Kato, Kensuke Kuraki, Ryuta Tanaka
  • Publication number: 20170195047
    Abstract: A reproduction device is configured to receive light emitted based on a plurality of signals having a specific amplitude in a specific color space on which information is superimposed, and to reproduce the information based on the received light. The reproduction device includes: a memory; and a processor coupled to the memory and configured to: generate a plurality of signals in the specific color space from the received light, correct the generated plurality of signals based on the specific amplitude, and acquire the information based on the corrected plurality of signals.
    Type: Application
    Filed: March 17, 2017
    Publication date: July 6, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Keizo KATO, Kensuke KURAKI, Ryuta TANAKA, Akira NAKAGAWA
  • Publication number: 20170116697
    Abstract: A detecting device divides image data into a plurality of areas, wherein the image data is projected by a projecting device and the image data has a plurality of sets of watermark information, in each of which frequency and amplitude are constant and in each of which phase is reversed depending on whether first-type information or second-type information is indicated, and the plurality of sets of watermark information are embedded in the image data in a synchronized manner. The detecting device extracts amplitude of the watermark information included in the areas and identifies, as a target area for extraction, successive areas in which the extracted amplitude of the watermark information is constant. The detecting device extracts the watermark information which is overlapping in the target area for extraction.
    Type: Application
    Filed: January 4, 2017
    Publication date: April 27, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Keizo KATO, Kensuke KURAKI, Ryuta TANAKA
  • Publication number: 20170099104
    Abstract: A transmitter includes a light source which enables changing the characteristic of light, on a time-series basis, and a controller which sets a predetermined duration for a symbol included in information to be transmitted and controls the light source to change the characteristic of the light emitted by the light source, on a time-series basis in accordance with a value of the symbol in the duration. A receiver includes a camera which generates a plurality of images each recording an image capturing range including at least a part of an area irradiated with the light from the transmitter, with a predetermined image capturing period, and a processor configured to extract a feature amount representing the characteristic of the light, from each of the plurality of images, and decode the value of the symbol from a time-series change in the feature amount.
    Type: Application
    Filed: December 19, 2016
    Publication date: April 6, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Kensuke KURAKI, Keizo KATO, Ryuta TANAKA
  • Publication number: 20160350890
    Abstract: A memory stores video information obtained by photographing an object that reflects light in which embedded information is superimposed onto a plurality of components in a color space. A processor emphasizes a signal obtained from an image included in the video information on the basis of a result of emphasizing a first color component more than a second color component according to a spectral reflection characteristic in a range including the object, and detects the embedded information from the emphasized signal, the first color component and the second color component being from among a plurality of color components that correspond to a plurality of wavelengths, the first color component having a reflectance higher than a reflectance of the second color component. A display device outputs information on the basis of the embedded information detected by the processor.
    Type: Application
    Filed: March 16, 2016
    Publication date: December 1, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Keizo Kato, Kensuke KURAKI, RYUTA TANAKA
  • Publication number: 20140146393
    Abstract: There is provided is a transmitted light control device capable of controlling a peak wavelength and a peak intensity of transmitted light while keeping a sharp wavelength width. A transmitted light control device 10 includes: a grating substrate 1; a metal thin film 2; a conducting polymer layer 3 made by depositing a conducting polymer on the metal thin film 2; a cell 4 filled with a liquid medium 5 composed of an electrolyte or a buffer solution and configured such that a part of the liquid medium 5 is in contact with the conducting polymer layer 3; and a metal thin film potential control means 6 having a working electrode W connected to the metal thin film 2 and having a counter electrode C and a reference electrode R each connected to the liquid medium 5. The substrate 1 and at least a part of the cell 4 are made of a light transmitting material.
    Type: Application
    Filed: June 11, 2012
    Publication date: May 29, 2014
    Applicant: NIIGATA UNIVESITY
    Inventors: Akira Baba, Rapiphun Janmanee, Koji Tada, Kazunari Shinbo, Keizo Kato, Futao Kaneko
  • Publication number: 20140133052
    Abstract: A magnetic read head having a reduced read gap and a stable magnetic pinned layer structure. The sensor includes a seed layer that has a surface formed with an anisotropic texture. A magnetic pinned layer formed over the seed layer has a body centered cubic structure which causes the pinned layer structure to have a magnetic anisotropy with an easy axis oriented perpendicular to the air bearing surface when deposited over the textured seed layer. A magnetic free layer structure formed over the pinned layer structure and over a non-magnetic barrier layer has a face centered cubic structure which causes the magnetic free layer to have a magnetic anisotropy with an easy axis oriented parallel with the air bearing surface.
    Type: Application
    Filed: November 14, 2012
    Publication date: May 15, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Kenichi Meguro, Keizo Kato, Susumu Okamura, Nobuo Yoshida
  • Patent number: 8564781
    Abstract: Provided is an SPR sensor which can achieve compaction and multichannel detection by simple configuration at a low cost. The SPR sensor comprises an optical path, and detection areas on the side surface thereof formed by laminating metal layers formed to cause surface plasmon resonance phenomenon. The SPR sensor is characterized in that two or more detection areas are formed for one optical path, a dielectric constant regulation layer is further laminated in at least one of the two or more detection areas, dielectric constant is regulated to have a different surface plasmon resonance in each detection area, and a dielectric constant regulation layer laminated in the at least one of the two or more detection areas functions as a layer exhibiting sensitivity to an object to be detected.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: October 22, 2013
    Assignees: Hitachi Chemical Company, Ltd., Niigata University
    Inventors: Nobuo Miyadera, Kenta Mizusawa, Kazunari Shinbo, Yasuo Ohdaira, Akira Baba, Keizo Kato, Futao Kaneko, Takahiro Kawakami
  • Patent number: 8189304
    Abstract: A magnetoresistive magnetic head according to one embodiment uses a current-perpendicular-to-plane magnetoresistive element having a laminate of a free layer, an intermediate layer, and a pinned layer, the pinned layer being substantially fixed to a magnetic field to be detected, wherein either the pinned layer or the free layer includes a Heusler alloy layer represented by a composition of X—Y—Z, wherein X is between about 45 at. % and about 55 at. % and is Co or Fe, Y accounts for between about 20 at. % and about 30 at. % and is one or more elements selected from V, Cr, Mn, and Fe, and Z is between about 20 at. % and about 35 at.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: May 29, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Susumu Okamura, Yo Sato, Katsumi Hoshino, Hiroyuki Hoshiya, Kenichi Meguro, Keizo Kato
  • Patent number: 8107193
    Abstract: According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole including a write magnetic pole layer for recording, the write magnetic pole layer comprising magnetic layers being antiferromagnetically coupled via a thin non-magnetic conductor layer between the magnetic layers, wherein the write magnetic pole layer for recording has a flare section which gradually widens in a height-wise direction of a throat height section. The main magnetic pole also includes a non-magnetic cap layer laminated above an uppermost layer of the write magnetic pole layer, the non-magnetic cap layer being textured to provide anisotropy, and a subsidiary magnetic pole layer for supplementing the recording laminated above the non-magnetic cap layer. The head also includes an auxiliary magnetic pole, a magnetic shield positioned via a non-magnetic layer on a trailing edge and both sides of the main magnetic pole in a track width direction, and a coil for generating a recording magnetic field.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: January 31, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Isao Nunokawa, Mikito Sugiyama, Kikuo Kusukawa, Keizo Kato
  • Publication number: 20110249360
    Abstract: According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole including a write magnetic pole layer for recording, the write magnetic pole layer comprising magnetic layers being antiferromagnetically coupled via a thin non-magnetic conductor layer between the magnetic layers, wherein the write magnetic pole layer for recording has a flare section which gradually widens in a height-wise direction of a throat height section. The main magnetic pole also includes a non-magnetic cap layer laminated above an uppermost layer of the write magnetic pole layer, the non-magnetic cap layer being textured to provide anisotropy, and a subsidiary magnetic pole layer for supplementing the recording laminated above the non-magnetic cap layer. The head also includes an auxiliary magnetic pole, a magnetic shield positioned via a non-magnetic layer on a trailing edge and both sides of the main magnetic pole in a track width direction, and a coil for generating a recording magnetic field.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 13, 2011
    Inventors: Isao Nunokawa, Mikito Sugiyama, Kikuo Kusukawa, Keizo Kato
  • Publication number: 20110157593
    Abstract: Provided is an SPR sensor which can achieve compaction and multichannel detection by simple configuration at a low cost. The SPR sensor comprises an optical path, and detection areas on the side surface thereof formed by laminating metal layers formed to cause surface plasmon resonance phenomenon. The SPR sensor is characterized in that two or more detection areas are formed for one optical path, a dielectric constant regulation layer is further laminated in at least one of the two or more detection areas, dielectric constant is regulated to have a different surface plasmon resonance in each detection area, and a dielectric constant regulation layer laminated in the at least one of the two or more detection areas functions as a layer exhibiting sensitivity to an object to be detected.
    Type: Application
    Filed: August 21, 2009
    Publication date: June 30, 2011
    Inventors: Nobuo Miyadera, Kenta Mizusawa, Kazunari Shinbo, Yasuo Ohdaira, Akira Baba, Keizo Kato, Futao Kaneko, Takahiro Kawakami