Patents by Inventor Ken Yokoyama

Ken Yokoyama 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: 20170357543
    Abstract: For each setting-file, an apparatus obtains, from first action-records, an occurrence-count value that is associated with the each first action-record and indicates a number of occurrences of a setting-item name identifying each setting-item for the each setting-file, in association with a sequence number assigned to the each first action-record, where each first action-record records an action that is taken in response to a first-incident. When there exists a first setting-file for which an occurrence-pattern generated based on a sequence of occurrence-count values that are each associated with different one of the sequence numbers assigned to the first action-records is similar to a model pattern that is in advance obtained from second action-records for second-incidents occurring due to a setting error of a setting-value that is set to the first setting file, the apparatus stores the first setting-file in association with an identifier identifying the first-incident.
    Type: Application
    Filed: June 8, 2017
    Publication date: December 14, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Hiroshi OTSUKA, Yukihiro Watanabe, Ken Yokoyama
  • Publication number: 20170303992
    Abstract: A treatment instrument which is used under an environment filled with an electrically conductive liquid includes a probe, a hollow sheath and an insulating member. The probe has a distal portion to chip a treatment target part by ultrasonic vibration and which allows the distal portion to function as one pole in a bipolar electrode. The sheath surrounds the probe. The insulating member covers the sheath except for a partial region on the distal side of the sheath. The partial region on the distal side of the sheath functions as the other pole in the bipolar electrode.
    Type: Application
    Filed: July 7, 2017
    Publication date: October 26, 2017
    Applicant: OLYMPUS CORPORATION
    Inventor: Ken YOKOYAMA
  • Publication number: 20170303993
    Abstract: A treatment instrument includes a probe including a treatment portion which treats a treatment target part by ultrasonic vibration, and a back portion provided on a side opposite to the treatment portion. The treatment instrument includes a hollow sheath which surrounds the probe, the sheath having a cutout made to expose the treatment portion. The treatment instrument includes protrusion which is provided in the sheath to cover the back portion on a side opposite to the cutout and which has dimensions smaller than the dimensions of the probe in a direction that intersects with a central axis of the probe.
    Type: Application
    Filed: July 7, 2017
    Publication date: October 26, 2017
    Applicant: OLYMPUS CORPORATION
    Inventor: Ken YOKOYAMA
  • Publication number: 20170303955
    Abstract: A treatment instrument which is used under an environment filled with an electrically conductive liquid, the treatment instrument includes: a probe comprising a treatment portion which treats a treatment target part by ultrasonic vibration, and a back portion provided on a side opposite to the treatment portion, the probe constituting one pole in a bipolar treatment; a hollow sheath which comprises a protrusion to constitute the other pole in the bipolar treatment and which surrounds the probe; and a cutout which is provided in the sheath to expose the treatment portion of the probe and which comprises portions different from each other in inclination to a central axis of the probe.
    Type: Application
    Filed: July 7, 2017
    Publication date: October 26, 2017
    Applicant: OLYMPUS CORPORATION
    Inventor: Ken YOKOYAMA
  • Publication number: 20170230244
    Abstract: A method includes calculating a first feature amount for each of a plurality of apparatuses, performing first clustering on the first feature amount, generating a first rule, storing the first rule into a memory, calculating a second feature amount, performing second clustering on the second feature amount, generating a second rule, storing the second rule into the memory, performing third clustering on the plurality of apparatuses based on the first result of the first clustering and the second result of the second clustering, generating a third rule related to attributes, and storing the third rule into the memory.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 10, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuya UCHIUMI, Ken YOKOYAMA, Yukihiro WATANABE, Hiroshi OTSUKA, Masahiro ASAOKA, Reiko KONDO
  • Patent number: 9703580
    Abstract: An information processing apparatus includes a processor configured to collect data received and transmitted between a plurality of virtual machines within a physical apparatus, the plurality of virtual machines running on the physical apparatus; and a communication unit configured to output the data collected by the processor to an external apparatus.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: July 11, 2017
    Assignee: Fujitsu Limited
    Inventor: Ken Yokoyama
  • Publication number: 20170168911
    Abstract: A computer-implemented method includes: acquiring learning data from the plurality of processing devices in which a setting item, a setting value that include a setting error included in configuration information acquired when a fault in a system has occurred, and a fault type are associated with each other; determining whether each of fault types included in the learning data depends on a software configuration; extracting first software configuration information indicating a combination of setting files in which settings related to software are described, from the configuration information, based on a result of the determining; extracting second software configuration information indicating a combination of setting files in which settings related to software are described, from configuration information of a detection target; and determining whether to output an indication of a fault occurrence within the detection target by comparing the second software configuration information with the first software con
    Type: Application
    Filed: December 8, 2016
    Publication date: June 15, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Hiroshi Otsuka, YUKIHIRO WATANABE, Ken Yokoyama
  • Patent number: 9632861
    Abstract: A method includes: acquiring messages output by items in the system, each of messages including an output time; referring to the messages and setting item pairs which combine two items among the items, as target item pairs; determining, for each of the item pairs, a strength of relevancy between the target item pairs based on a co-occurrence probability which indicates that a message is output from one of the target item pair within a prescribed time period before or after the output time of a message output from other of the target item pair; and determining a priority ranking for investigating one or more the items among the items other than a certain item based on the strength of relevancy of each of item pairs, as a response to an input of an investigation ranking determination instruction which designates the certain item among the items as an investigation start position.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: April 25, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Yukihiro Watanabe, Hiroshi Otsuka, Masahiro Asaoka, Ken Yokoyama
  • Publication number: 20160248943
    Abstract: The image forming apparatus configured to execute density control, includes a printer engine configured to indicate a plurality of images obtained by changing an image level in a stepwise manner, and a CPU configured to determine whether or not the density control is to be executed based on an allowance level selected from among the image levels corresponding to the plurality of images and on information on whether or not the density control is to be executed, which is set for each image level.
    Type: Application
    Filed: February 12, 2016
    Publication date: August 25, 2016
    Inventor: Ken Yokoyama
  • Patent number: 9400458
    Abstract: The image forming apparatus includes a CPU capable of executing neutralization control in which, prior to image formation, a potential difference between a voltage applied to a transfer roller by a transfer power supply and a voltage applied to a neutralization needle by a neutralization power supply is gradually increased, and a value of the potential difference when the value detected by the neutralization current meter exceeds a threshold is stored, and in which, during image formation, a value of the voltage applied by the neutralization power supply is controlled based on the stored potential difference and the value of an image formation voltage applied by the transfer power supply.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: July 26, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ken Yokoyama
  • Publication number: 20160147182
    Abstract: The image forming apparatus includes a CPU capable of executing neutralization control in which, prior to image formation, a potential difference between a voltage applied to a transfer roller by a transfer power supply and a voltage applied to a neutralization needle by a neutralization power supply is gradually increased, and a value of the potential difference when the value detected by the neutralization current meter exceeds a threshold is stored, and in which, during image formation, a value of the voltage applied by the neutralization power supply is controlled based on the stored potential difference and the value of an image formation voltage applied by the transfer power supply.
    Type: Application
    Filed: November 20, 2015
    Publication date: May 26, 2016
    Inventor: Ken Yokoyama
  • Patent number: 9165227
    Abstract: The color image forming apparatus includes a CPU configured to correct a result of detecting a toner patch by a density sensor based on a result of detecting a first white reference plate by the density sensor, and to control a density or chromaticity of a toner image based on a result of detecting the toner patch by the density sensor corrected by the CPU. The CPU is configured to further correct the result of detecting the first white reference plate by the density sensor based on a result of detecting, by the density sensor, a second white reference plate for correcting the first white reference plate. With this configuration, a correction of a sensor output is performed with high accuracy, and detection accuracy of the density or the chromaticity by the sensor is enhanced.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: October 20, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ken Yokoyama
  • Patent number: 9075330
    Abstract: An image forming apparatus uses the difference in time taken for each patch to reach a color sensor, which occurs upon reversing the conveyance direction of a printing material. Due to this difference in time, the temperature of the printing material in detection by the color sensor differs among the respective patches. The error of a colorimetric value due to thermochromism is reduced by placing a patch with a colorimetric value which has a low temperature dependence so as to be detected earlier, and a patch with a colorimetric value which has a high temperature dependence so as to be detected later.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: July 7, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masatake Usui, Hiroshi Kita, Shun-ichi Ebihara, Ken Yokoyama
  • Patent number: 8977171
    Abstract: The image forming apparatus is capable of changing a state between a first state in which only a first image bearing member and transfer belt contact each other, and a second state in which respective image bearing members are separated from the transfer belt. A second transfer member is located at a first separating portion at which the second transfer member is separated from the image bearing member in the first state, and is located at a second separating position closer to the second image bearing member than the first separating position in the second state to regulate the position of the transfer belt.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: March 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ken Yokoyama, Tsubasa Takeuchi
  • Patent number: 8965968
    Abstract: A device carries out a receiving process to receive a message transmitted or received by a server from a communication device connected to the server. The device stores the message in a message storing unit in connection with a time when the receiving process is carried out. The device extracts a message for synchronization from the message storing unit. The device produces log data including identification data to identify the message for synchronization and a time when the message for synchronization is received. The device produces log data including a time when a message other than the message for synchronization is received. The device stores the log data in a log data storing unit. The device transmits the log data stored in the log data storing unit to a log data processing device connected to a network on an opposite side of a firewall connected to the communication device.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: February 24, 2015
    Assignee: Fujitsu Limited
    Inventor: Ken Yokoyama
  • Patent number: 8913905
    Abstract: An image forming apparatus includes a detection unit configured to irradiate a patch image formed on a recording material with light, and detect light intensities at a plurality of wavelengths in the light reflected from the patch image; and a determination unit configured to determine that a patch image for which the detection unit is detecting light intensities has transitioned from a first patch image to a second patch image, wherein the determination unit is further configured to determine that the patch image for which the detection unit is detecting has transitioned, in a case where a light intensity at a wavelength for identification of a patch image to be identified, has varied by an amount greater than a first threshold corresponding to that wavelength for identification.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: December 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirotaka Shiomichi, Ryuhei Shoji, Ken Yokoyama
  • Patent number: 8902465
    Abstract: The present invention provides a mechanism that more appropriately evaluates an image defect caused by a specific process in an image forming apparatus. An image forming apparatus of this invention performs colorimetry of a patch image at a spatial resolution corresponding to the spatial frequency of color unevenness caused by a specific process included in an image forming process. A statistic value based on the n-th (n is an integer of 2 or more) order central moment of a specific color component of a colorimetric value obtained by performing colorimetry at the spatial resolution is compared with a reference value, thereby detecting that the color unevenness caused by the specific process has occurred in the patch image.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: December 2, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ken Yokoyama, Akihito Sonoda
  • Patent number: 8873045
    Abstract: A spectrocolorimeter comprises: a calculation unit configured to calculate wavelengths of dispersing light rays respectively received by a plurality of pixels included in a light detection unit using a correspondence relationship between pixels and wavelengths of a plurality of extremal value points in a profile of dispersing light rays detected by the light detection unit upon execution of colorimetry of a reference object to be measured, wherein when the calculation unit calculates the wavelengths of the dispersing light rays respectively received by the plurality of pixels, the calculation unit adjusts a colorimetry condition for respective extremal value points so that signals to be output from pixels corresponding to the plurality of extremal value points have output levels which are not less than a reference and are not saturated.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: October 28, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shun-ichi Ebihara, Hiroshi Kita, Ken Yokoyama
  • Publication number: 20140317623
    Abstract: An information processing apparatus includes a processor configured to collect data received and transmitted between a plurality of virtual machines within a physical apparatus, the plurality of virtual machines running on the physical apparatus; and a communication unit configured to output the data collected by the processor to an external apparatus.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 23, 2014
    Inventor: Ken Yokoyama
  • Publication number: 20140169840
    Abstract: The image forming apparatus is capable of changing a state between a first state in which only a first image bearing member and transfer belt contact each other, and a second state in which respective image bearing members are separated from the transfer belt. A second transfer member is located at a first separating portion at which the second transfer member is separated from the image bearing member in the first state, and is located at a second separating portion closer to the second image bearing member than the first separating portion in the second state to regulate the position of the transfer belt.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 19, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ken Yokoyama, Tsubasa Takeuchi