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).

  • 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
  • Patent number: 10848643
    Abstract: The present invention is a color conversion processing apparatus that converts an input image signal value into an output value of an actual color material used in an image forming apparatus, and includes: a derivation unit configured to derive an output value corresponding to the input image signal value for a plurality of virtual color materials smaller in number than the number of actual color materials; and a conversion unit configured to convert the derived output values of the plurality of virtual color materials into the output values of the actual color materials, and each of the plurality of virtual color materials has a density corresponding to each wavelength band obtained by dividing a wavelength range reproduced by the actual color materials being output into a plurality of wavelength bands, and the derivation unit derives the output value corresponding to the input image signal value based on the density corresponding to each of the wavelength bands for the plurality of virtual color materials.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: November 24, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoya Takesue, Toshiyuki Dobashi, Tomokazu Yanai, Hisashi Ishikawa
  • Patent number: 10834288
    Abstract: In an embodiment of the present disclosure, an image processing apparatus for generating dot data, which defines whether or not a dot is arranged in each pixel, includes: a dot number derivation unit configured to derive a number of dots to be arranged in a predetermined region of image data; a determination unit configured to determine an arrangement priority of a pixel in which a dot is arranged, based on the pixel value of each pixel included in the predetermined region and a threshold value group in a threshold value matrix; a correction unit configured to correct the derived number of dots, in a case where the derived number of dots is smaller than a criterial number of dots; and a generation unit configured to generate the dot data, based on the corrected number of dots and the arrangement priority.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: November 10, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshiki Hashioka, Hisashi Ishikawa
  • Patent number: 10831121
    Abstract: An image processing apparatus converts, according to light on an image printed based on input image data, the input image data into image data for illumination output superimposed on the image, includes a deriving unit deriving an observing condition, an estimating unit estimating luminance characteristics based on the observing condition and reflectance characteristics corresponding to print image data, an introducing unit introducing target luminance characteristics based on the print luminance characteristics, a setting unit setting illumination converting characteristics converting the input image data into the image data for illumination output based on the print luminance characteristics and the target luminance characteristics, and a converting unit converting gradation of the input image data using the illuminance characteristics, and the introducing unit introducing the target luminance characteristics such that, when reproducing ranges in the print luminance characteristics are different, a linear r
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: November 10, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tomokazu Yanai, Hisashi Ishikawa, Kyohei Kikuta, Satoshi Wada, Takeshi Yazawa
  • Publication number: 20200349405
    Abstract: An image processing apparatus that generates image data to be output to an image forming apparatus printing an image, and includes: a generation unit configured to generate, based on an input image, first generation amount data indicating a generation amount of each of one or more kinds of ink dot for each pixel and second generation amount data indicating a generation amount of a blank dot for which the ink dot is not formed for each pixel; and a processing unit configured to determine a dot arrangement pattern indicating an arrangement of each of the one or more kinds of ink dot by performing quantization processing using the first generation amount data and the second generation amount data.
    Type: Application
    Filed: July 21, 2020
    Publication date: November 5, 2020
    Inventors: Ryosuke Otani, Hisashi Ishikawa
  • Patent number: 10821997
    Abstract: A vehicle control apparatus configured to control a vehicle capable of switching between a manual drive mode for driving manually and a self-drive mode for driving autonomously. The vehicle control apparatus includes an electric control unit having a microprocessor and a memory. The microprocessor is configured to perform detecting a failure of the vehicle while traveling in the manual drive mode, and switching a drive mode from the manual drive mode to the self-drive mode when the failure is detected.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: November 3, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hisashi Ishikawa, Masayuki Sadakiyo, Tomoyuki Noguchi, Takashi Adachi, Yusuke Yoshimura
  • Patent number: 10793153
    Abstract: The vehicle controller performs gear position switch control in which a gear position of an automatic transmission set based on the automated drive control is changed to an upper-level gear position if the driver operates the accelerator pedal under the automated drive control.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 6, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hisashi Ishikawa, Kentaro Arai, Masayuki Sadakiyo, Takashi Adachi, Tomoyuki Noguchi
  • Patent number: 10769506
    Abstract: When a sum of a first gradation data for a first color and a second gradation data for a second color is greater than the maximum value of thresholds of a first threshold matrix, a generation unit generates a first overlapping gradation data and second overlapping gradation data by dividing a value obtained by subtracting the maximum value from the sum. Further, the generation unit generates a first quantization data based on a result of comparing the first overlapping gradation data with the second threshold or a result of comparing a difference between the first gradation data and the first overlapping gradation data with the first threshold, and generates a second quantization data based on a result of comparing the second overlapping gradation data with the first threshold or a result of comparing a difference between the second gradation data and the second overlapping gradation data with the second threshold.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: September 8, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tsukasa Doi, Hirokazu Tanaka, Hisashi Ishikawa, Shoei Moribe, Yusuke Yamamoto, Shigeo Kodama, Yuta Ikeshima
  • Patent number: 10771657
    Abstract: An image processing apparatus performs image processing to print a color materials of a first color and a second color. When a sum of a first gradation data for the first color and a second gradation data for the second color is equal to or smaller than the maximum value of thresholds of a first threshold matrix, a generation unit generates a second quantization data for the second color based on a result of comparing the second gradation data with a second threshold. When the sum is greater than the maximum value, the generation unit generates third gradation data by subtracting the maximum value from the sum and generates the second quantization data based on a result of comparing the third gradation data with the first threshold or a result of comparing a difference between the second gradation data and the third gradation data with the second threshold.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: September 8, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tsukasa Doi, Hirokazu Tanaka, Hisashi Ishikawa, Shoei Moribe, Yusuke Yamamoto, Shigeo Kodama, Yuta Ikeshima
  • Publication number: 20200274985
    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: Application
    Filed: May 12, 2020
    Publication date: August 27, 2020
    Inventors: Tomokazu Yanai, Hisashi Ishikawa, Satoshi Wada, Takeshi Yazawa, Tetsuya Suwa, Hidetsugu Kagawa
  • Publication number: 20200247137
    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: Application
    Filed: January 24, 2020
    Publication date: August 6, 2020
    Inventors: Ryosuke Otani, Tomoya Kiriyama, Hisashi Ishikawa
  • Patent number: 10733488
    Abstract: To generate a dot pattern whose deterioration of a feeling of granularity, density unevenness, and streaks are unlikely to be recognized visually by more effectively suppressing a change of an overlap of ink droplets on a printing medium. Halftone image data representing a dot pattern of each of two or more kinds of dot different in density reproduction is acquired. Then, in a case where there is a possibility that the contact state between dots changes due to a landed-dot shift of ink in a plurality of specific dots on a condition that dots are formed in accordance with a dot pattern in the halftone image data, the plurality of specific dots is replaced with dots of another kind whose number is less than or equal to that of the plurality of specific dots.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: August 4, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoya Takesue, Hisashi Ishikawa
  • Publication number: 20200207328
    Abstract: A control apparatus of a hybrid vehicle including a temperature detection part detecting a temperature of a first motor-generator, and a microprocessor. The microprocessor is configured to perform controlling an internal combustion engine, the first motor-generator and a second motor-generator so that the hybrid vehicle travels in accordance with a required driving force, outputting a request for temperature increase suppression of the first motor-generator based on the temperature of the first motor-generator, and the controlling including controlling the internal combustion engine, the first motor-generator and the second motor-generator so that power generation amount of the first motor-generator is reduced, the second motor-generator generates an electric power by a regenerative torque and a driving force of the internal combustion engine increases by an amount corresponding to the regenerative torque when the request for the temperature increase suppression is output.
    Type: Application
    Filed: December 16, 2019
    Publication date: July 2, 2020
    Inventors: Takashi Adachi, Hisashi Ishikawa, Tomoyuki Noguchi, Masayuki Sadakiyo
  • Patent number: 10699385
    Abstract: Disclosed is an image processing apparatus including: a sharpness recovery unit configured to recover sharpness of an input image; a correlation determination unit configured to determine a correlation between a target pixel and peripheral pixels of the input image; a noise removal unit configured to perform smoothing of the target pixel determined as having a correlation with the peripheral pixels in a recovered image output from the sharpness recovery unit; and a switching unit configured to switch between a mode in which the correlation determination unit uses the target pixel and the peripheral pixels of the pre-recovery input image in the correlation determination and a mode in which the correlation determination unit uses the target pixel and the peripheral pixels of the recovered input image in the correlation determination, depending on recovery characteristics used in the determination of the correlation determination unit.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: June 30, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koji Fuse, Hisashi Ishikawa, Akitoshi Yamada
  • Publication number: 20200198365
    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: Application
    Filed: December 13, 2019
    Publication date: June 25, 2020
    Inventors: Takashi Ochiai, Hisashi Ishikawa
  • Publication number: 20200204705
    Abstract: In an embodiment of the present disclosure, an image processing apparatus for generating dot data, which defines whether or not a dot is arranged in each pixel, includes: a dot number derivation unit configured to derive a number of dots to be arranged in a predetermined region of image data; a determination unit configured to determine an arrangement priority of a pixel in which a dot is arranged, based on the pixel value of each pixel included in the predetermined region and a threshold value group in a threshold value matrix; a correction unit configured to correct the derived number of dots, in a case where the derived number of dots is smaller than a criterial number of dots; and a generation unit configured to generate the dot data, based on the corrected number of dots and the arrangement priority.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 25, 2020
    Inventors: Yoshiki Hashioka, Hisashi Ishikawa
  • Patent number: 10691124
    Abstract: A control apparatus includes a switching control unit that switches a traveling mode of a vehicle from an automated driving mode to a manual driving mode if an automated drive canceling request to cancel the automated driving mode to switch to the manual driving mode is submitted while the vehicle is traveling in the automated driving mode. The switching control unit performs transmission gear setting control in which a transmission gear of an automatic transmission is set to a highest transmission gear among transmission gears within a range of a predetermined allowable driving force in the switching from the automated driving mode to the manual driving mode.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: June 23, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masayuki Sadakiyo, Kentaro Arai, Hisashi Ishikawa, Takashi Adachi, Tomoyuki Noguchi
  • Publication number: 20200184289
    Abstract: Provided is quantization processing that can reduce color development defect due to dot overlapping and can output an image with reduced granularity when the image is printed by using multiple kinds of colorants. To this end, dot arrangement information for a colorant for which dot arrangement is already determined among multiple kinds of colorants is acquired for a predetermined region of the image, and an evaluation value of each pixel included in the predetermined region is derived based on the arrangement information. In addition, for the predetermined region, a target value for a predetermined colorant for which dot arrangement is yet to be determined is derived based on the image. Then, whether or not to arrange a dot of the predetermined colorant in the predetermined region is determined based on the target value and the evaluation value.
    Type: Application
    Filed: December 5, 2019
    Publication date: June 11, 2020
    Inventors: Naoya Takesue, Hisashi Ishikawa, Akitoshi Yamada