Patents by Inventor Hisashi Ishikawa

Hisashi Ishikawa 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: 20220030136
    Abstract: An apparatus comprises a unit configured to generate gradation data corresponding to an achromatic color generated by combining two or more colors among a plurality of colors, for an excess amount of a total gradation value exceeding a predetermined value, the total gradation value being a sum of gradation values of the plurality of colors used for recording a pixel of interest, and generate gradation data corresponding to the plurality of colors, based on the generated gradation data corresponding to the achromatic color; and a unit configured to quantize the generated gradation data, and generate data to control recording of dots corresponding to the pixel of interest. The predetermined value is a gradation value indicating whether or not to record the dots in an overlapping manner, in case that the dots corresponding to the total gradation value are recorded.
    Type: Application
    Filed: July 14, 2021
    Publication date: January 27, 2022
    Inventors: Shoei Moribe, Hisashi Ishikawa
  • Patent number: 11214277
    Abstract: A control device for a vehicle capable of switching between an automated driving mode in which driving force of a vehicle having a transmission is automatically controlled and a manual driving mode in which the driving force of the vehicle is controlled on the basis of a driver's operation on the vehicle includes: an operation element to which the driver's operation is input; and a travel control unit that outputs a command value for selecting a gear range of the transmission. The travel control unit selects which of ordinary gear change control and gear change restricting control is to be performed on the basis of an operation performed on the operation element when there is an automated driving release request in which the automated driving mode is released and the automated driving mode is switched to the manual driving mode during traveling of the vehicle in the automated driving mode.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: January 4, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takashi Adachi, Kentaro Arai, Tomoyuki Noguchi, Masayuki Sadakiyo, Hisashi Ishikawa
  • Patent number: 11212415
    Abstract: Disclosed is an image processing apparatus including: a derivation unit configured to derive a target luminance characteristic based on a viewing condition of an image and a print luminance characteristic predicted based a reflection characteristic corresponding to data thereon; a unit configured to generate print image data on an image by converting input image data by using a tone conversion characteristic that is set based on these characteristics, in which the derivation unit derives, in a case where a reproduction range of an illumination intensity in the print luminance characteristic is different, the target luminance characteristic so that a liner area of an output luminance in a case where the reproduction range is relatively large becomes large.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: December 28, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tomokazu Yanai, Hisashi Ishikawa, Satoshi Wada, Takeshi Yazawa, Tetsuya Suwa, Hidetsugu Kagawa
  • Patent number: 11192386
    Abstract: To predict more accurately whether ink dots formed on the surface of paper by two nozzles arranged in a nozzle row and located at positions close to each other overlap. A luminance amount for each unit area surrounding each chart is derived from scanned data obtained by reading results of printing a plurality of charts (two-dot line chart corresponding to a nozzle pair of a nozzle of interest and a neighboring nozzle thereof among the plurality of nozzles) associated with a plurality of nozzles respectively. Then, based on the luminance amount for each unit area, the dot formation state in a dot formation line by the plurality of nozzles is determined.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: December 7, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takashi Ochiai, Hisashi Ishikawa
  • Patent number: 11180136
    Abstract: An autonomous parking apparatus incorporated into a vehicle including an internal combustion engine, a torque converter, a transmission, a detector detecting a creep torque acting on an axle, and a microprocessor. The microprocessor is configured to perform instructing a self-parking of the vehicle, determining whether it is necessary to perform a creep torque reduction control based on a creep torque detected when the self-parking is instructed, and controlling the transmission in accordance with a determination result in the determining. When it is determined that it is necessary to perform the creep torque reduction control, the microprocessor is configured to control the transmission so as to increase engaging force of engagement elements of the transmission or change speed stage of the transmission to high speed side than when it is determined that it is unnecessary to perform the creep torque reduction control.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: November 23, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masayuki Sadakiyo, Hisashi Ishikawa, Tomoyuki Noguchi, Takashi Adachi
  • Publication number: 20210300326
    Abstract: The disclosure provides a control device for a hybrid vehicle, which can prevent overcharging the battery and effectively utilize the power generated by an electric motor operating as a generator to avoid useless wasted power. The hybrid vehicle includes an engine, an electric motor, a battery, an engine rotational speed sensor, a battery temperature sensor, and a fuel cutting part that stops the operation of the engine according to a specified operating condition. In the state where the operation of the engine is stopped by the fuel cutting part, the control device operates the electric motor as a generator when the rotational speed of the engine is equal to or below a specified value and the battery is chargeable in terms of temperature, and drives a heater with the power generated by the electric motor operating as a generator when the battery is unchargeable in terms of remaining capacity.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 30, 2021
    Applicant: Honda Motor Co., Ltd.
    Inventors: Osamu SHIRAI, Ken HAYASAKA, Motoki MIZUSHIMA, Hisashi ISHIKAWA, Ichiro INABA, Hiroyuki MURAKAMI
  • Publication number: 20210303950
    Abstract: An object is to enable highly accurate density unevenness correction while suppressing a reduction in productivity of printing accompanying correction value calculation for density unevenness correction. In the image processing apparatus, density correction information that specifies an output tone value for implementing a target density for an input tone value for each nozzle and which does not include the influence by a non-ejectable nozzle that cannot eject ink normally is acquired. In a case where a non-ejectable nozzle is detected during printing processing, output tone values corresponding to the detected non-ejectable nozzle and peripheral nozzles thereof among output tone values specified in the density correction information are changed.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 30, 2021
    Inventors: Naoya Takesue, Hisashi Ishikawa
  • Publication number: 20210303952
    Abstract: To enable highly accurate density unevenness correction while suppressing a reduction in productivity in printing accompanying correction value calculation for density unevenness correction. Based on an image obtained by scanning a chart including patches having uniform density for each tone value, a density characteristic of each nozzle is acquired. A non-ejectable nozzle that cannot eject ink normally is detected by analyzing a pattern for detecting the non-ejectable nozzle in the image obtained by scanning the chart. At the time of acquiring the density characteristic, the density characteristic is acquired based on a density measured value of an area of the image, which corresponds to a nozzle that is not detected as the non-ejectable nozzle.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 30, 2021
    Inventors: Naoya Takesue, Hisashi Ishikawa
  • Patent number: 11128848
    Abstract: An information processing apparatus includes an acquisition unit configured to acquire image data representing an image generated by projecting a first image on a part of a second image using at least one projection apparatus and a control unit configured to control a presentation unit to present, to a user, an area in the second image where the first image is to be projected by the at least one projection apparatus based on the image.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: September 21, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Kubo, Hisashi Ishikawa
  • Patent number: 11104151
    Abstract: An image processing apparatus generates dot data for printing an image on a printing medium by using dots of different sizes formed by a plurality of nozzles ejecting ink. The image processing apparatus includes a first acquisition unit that acquires dot data specifying printing or non-printing of each of the dots of a plurality of sizes for each pixel, a specification unit that specifies a dot having a strong possibility of being pulled by a dot having landed earlier on the printing medium of dots in the dot data, and a correction unit that corrects a dot specified by the specification unit in the dot data. The image processing apparatus can output an image whose banding is unlikely to be recognized by suppressing image defect due to a change of dots accompanying liquid droplet interference.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: August 31, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takashi Ochiai, Hisashi Ishikawa
  • Patent number: 11090946
    Abstract: Density unevenness accompanying a variation in an ejection characteristic of each nozzle is reduced without worsening granularity of an image. To this end, an image processing apparatus generates first corrected data by correcting image data by using a first correction table common to the plurality of nozzles. Further, the image processing apparatus generates second corrected data by correcting the image data by using a second correction table for each of the plurality of nozzles. Furthermore, the image processing apparatus generates first quantized data by quantizing the first corrected data and generates second quantized data by quantizing the second corrected data. After that, the image processing apparatus generates N-valued print data based on the first quantized data and the second quantized data.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: August 17, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryosuke Otani, Hisashi Ishikawa
  • Patent number: 11084469
    Abstract: A vehicular control apparatus includes: a drive power control unit that controls drive power from a drive unit that drives drive wheels of a vehicle; a brake switch (a brake action detection unit) that detects a brake action performed on a brake unit, the brake action including decelerating and stopping the vehicle; a wheelspin detection unit that detects spinning of the drive wheels; a time measurement unit that, when the drive wheels being stopped start to rotate, measures time elapsed since the start of the rotation; and a control unit that enables the wheelspin detection unit to perform detection after a preset detection disabled period elapses since the time measurement unit has started measuring the time.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 10, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takashi Adachi, Hisashi Ishikawa, Takayuki Kishi
  • Patent number: 11020985
    Abstract: The image processing apparatus includes: an acquisition unit configured to acquire a pixel value group consisting of pixel values of a plurality of pixels included in a predetermined target area in image data; an acquisition unit configured to acquire a threshold value group consisting of a plurality of threshold values corresponding to the plurality of pixels; a calculation unit configured to calculate a target number of dots indicating a number of dots to be arranged within the target area; an acquisition unit configured to acquire a pixel position at which a dot is expected to be formed by a non-ejectable nozzle in the image data as a non-ejectable nozzle position; and determination unit configured to determine arrangement of dots in the target area based on a priority level determined based on the pixel value group and the threshold value group, the target number of dots, and the non-ejectable nozzle position.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: June 1, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryosuke Otani, Tomoya Kiriyama, Hisashi Ishikawa
  • Publication number: 20210158112
    Abstract: To implement non-ejection complementation processing while securing a chance for a nozzle in which an ejection failure has occurred to recover as a normal nozzle. Positional information for specifying an abnormal nozzle in which an ejection failure has occurred among a plurality of nozzles arrayed in a nozzle column is acquired and based on the positional information, input image data is converted into halftone image data. At this time, at least part of densities that are assumed to be obtained by a pixel line of the abnormal nozzle are distributed to pixels on a pixel line of a neighboring nozzle that is located in close proximity to the abnormal nozzle and in which no ejection failure has occurred so that in the halftone image data, at least in part of tones, the pixel on the pixel line of the abnormal nozzle has a density.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 27, 2021
    Inventors: Ryosuke Otani, Hisashi Ishikawa
  • Patent number: 11014573
    Abstract: A vehicle control device performs a drive mode switching control including switching a drive mode, when a request for switching to a manual drive control is made during execution of an automated drive control, to one of a plurality of drive modes that allows a driving force to accord with a required driving force based on an operation of the driver of the vehicle, over a wide range.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: May 25, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kentaro Arai, Masayuki Sadakiyo, Hisashi Ishikawa, Takashi Adachi, Tomoyuki Noguchi
  • Patent number: 11009872
    Abstract: If the driver operates the operation tool while the vehicle is traveling under the automated drive control, override control is performed in which the acceleration/deceleration of the vehicle is controlled according to the operation of the operation tool, when an automated drive target gear position selected based on automatic control of the acceleration/deceleration of the vehicle equals a manual drive target gear position determined according to the operation of the operation tool by the driver.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: May 18, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hisashi Ishikawa, Kentaro Arai, Masayuki Sadakiyo, Takashi Adachi, Tomoyuki Noguchi
  • Patent number: 10994768
    Abstract: A control device for a vehicle capable of operating in an automated driving mode for automatically controlling at least the accelerating/decelerating control of the steering control and the accelerating/decelerating control of a vehicle includes: a route information acquisition unit; and an automated driving control unit that decides an action plan on a basis of map information, the action plan includes a target vehicle speed sequence that defines a target vehicle speed at the respective predetermined points at least on a road along which the vehicle will travel next, and the automated driving control unit calculates requested braking force that is braking force for decelerating the vehicle to target vehicle speed when the target vehicle speed is achieved by deceleration, calculates a predicted temperature of a brake device when the requested braking force is achieved, and decides a utilization proportion of the brake device for the requested braking force.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: May 4, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takashi Adachi, Masayuki Sadakiyo, Tomoyuki Noguchi, Hisashi Ishikawa, Kentaro Arai
  • Patent number: 10896358
    Abstract: To make it possible to appropriately reproduce a desired color in a case where it is desired to change hue of a specific area on a reproduced image obtained by projecting a projection image onto printed matter in an overlapping manner. In an image processing apparatus, a print image for outputting printed matter by a printer onto which a moving image in which color of an object changes in a time series is projected in an overlapping manner is generated. The image processing apparatus acquires an image at least including the object whose color changes. Then, the image processing apparatus generates the print image by performing saturation reduction processing for an area of the object whose color changes in the acquired image.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: January 19, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kyohei Kikuta, Hideki Kubo, Hisashi Ishikawa
  • Patent number: 10890218
    Abstract: A hydraulic circuit includes a first shift valve and a second shift valve that are provided in series between a source oil path through which oil whose pressure has been regulated flows and a first clutch oil path and a second clutch oil path. The first shift valve is selectively switchable between a first switching state where a first communicating oil path and the first clutch oil path are communicated and a second switching state where a second communicating oil path and the second clutch oil path are communicated, and the second shift valve is selectively switchable between a third switching state where the source oil path and the first communicating oil path are communicated and a fourth switching state where the source oil path and the second communicating oil path are communicated.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: January 12, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hisashi Ishikawa, Yuji Okazaki, Shigeji Nakano, Hideaki Iwashita, Yuya Shimota, Noriyuki Yagi, Yoshihiro Sato
  • Patent number: 10855877
    Abstract: The image processing apparatus of the present invention includes: an image data acquisition unit configured to acquire image data; a generation unit configured to generate an ejection pattern of ink droplets from the image data, which are ejected for forming dots from a plurality of nozzles of an image forming apparatus; a characteristic acquisition unit configured to acquire an ejection characteristic of ink droplets of the image forming apparatus; and a pattern change processing unit configured to change the ejection pattern based on the ejection characteristic and the ejection pattern, and the pattern change processing unit repeatedly performs, in a case where a gap occurs between dots that should be formed so as to contact each other by the image forming apparatus, the ejection pattern change until the gap is eliminated.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: December 1, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoya Takesue, Masashi Oya, Hisashi Ishikawa