Patents by Inventor Yoshikazu Ishikawa

Yoshikazu 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: 20210280618
    Abstract: An image pickup apparatus that enables to quickly capture an image from which a predetermined reflected light component is removed with desired sensitivity. A polarizing filter two-dimensionally arranges a plurality of sets each of which includes polarizing filter elements having different polarization directions. A first image sensor has pixels that respectively correspond to polarizing filter elements of the polarizing filter. A polarization calculation unit detects a polarized component of light that enters into a region in which one set of polarizing filter elements are arranged based on signals output from pixels in the region of the first image sensor for each region. A correction unit corrects a pixel signal output from a pixel of a second image sensor corresponding to the region based on a calculation result by the polarization calculation unit for each pixel of the second image sensor.
    Type: Application
    Filed: February 16, 2021
    Publication date: September 9, 2021
    Inventors: Yusuke Yamashita, Tokuro Nishida, Kazuya Kitamura, Hiroyuki Hasegawa, Takenori Kobuse, Yoshikazu Ishikawa, Takayuki Kimura
  • Publication number: 20210266444
    Abstract: An image capturing apparatus that has an image capturing device including polarization elements and sets a proper frame rate according to a situation when acquiring a video using polarization information. The image capturing device an image capturing device including polarization pixels that detect polarization information of a plurality of different directions. The polarization information of the polarization pixels is determined by performing first polarization calculation or second polarization calculation which is smaller in calculation load than the first polarization calculation, on video signals output from the polarization pixels. A polarization-processed image is generated by using the polarization information. The first polarization calculation and the second polarization calculation are switched according to a predetermined timing, a mode, or a result of detecting a predetermined state.
    Type: Application
    Filed: February 10, 2021
    Publication date: August 26, 2021
    Inventors: Kazuya KITAMURA, Tokuro NISHIDA, Hiroyuki HASEGAWA, Takenori KOBUSE, Yusuke YAMASHITA, Yoshikazu ISHIKAWA, Takayuki KIMURA
  • Publication number: 20210195080
    Abstract: An electronic device acquires polarization information of a subject based on a plurality of pieces of image data based on a first signal output from a first sensor. The first sensor can capture an optical image of the subject acquired via a polarizing filter provided with areas having different polarization angles. The device further acquires an evaluation value for controlling brightness of an image at the time of capturing the optical image of the subject, based on the plurality of pieces of image data. The plurality of pieces of image data have different polarization angles, by respectively being acquired via areas of the polarizing filter having the plurality of different polarization angles. A degree of weighting to be assigned to the plurality of pieces of image data at the time of acquiring the evaluation value based on the polarization information.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 24, 2021
    Inventors: Takenori Kobuse, Yoshikazu Ishikawa, Takayuki Kimura, Yusuke Yamashita, Tokuro Nishida
  • Patent number: 10647115
    Abstract: Quantization is performed on multi-valued data corresponding to a non-overlap recording area and one of recording heads on the basis of a dither pattern and multi-valued data corresponding to the non-overlap recording area and the other one of the recording heads, and also arrangements of thresholds for the dither patterns used between the scanning operations are varied.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: May 12, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichi Nakagawa, Yoshikazu Ishikawa, Akitoshi Yamada
  • Patent number: 10336097
    Abstract: A printing apparatus uses a printing unit on which a right and a left printing heads are mutually arranged in opposite orientations in a predetermined direction to execute multi-pass printing.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: July 2, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akitoshi Yamada, Junichi Nakagawa, Yoshikazu Ishikawa
  • Publication number: 20190070851
    Abstract: Quantization is performed on multi-valued data corresponding to a non-overlap recording area and one of recording heads on the basis of a dither pattern and multi-valued data corresponding to the non-overlap recording area and the other one of the recording heads, and also arrangements of thresholds for the dither patterns used between the scanning operations are varied.
    Type: Application
    Filed: September 5, 2018
    Publication date: March 7, 2019
    Inventors: Junichi Nakagawa, Yoshikazu Ishikawa, Akitoshi Yamada
  • Publication number: 20180147840
    Abstract: A printing apparatus uses a printing unit on which a right and a left printing heads are mutually arranged in opposite orientations in a predetermined direction to execute multi-pass printing.
    Type: Application
    Filed: November 22, 2017
    Publication date: May 31, 2018
    Inventors: Akitoshi Yamada, Junichi Nakagawa, Yoshikazu Ishikawa
  • Patent number: 9824861
    Abstract: A substrate processing apparatus includes at least one process module configured to process first substrates. A position detector is configured to detect first positions of the first substrates. A control unit is configured to control the position detector so as to measure a second position of a second substrate selected from the first substrates to be processed in a same process module depending on a measurement interval set for the same process module.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: November 21, 2017
    Assignee: Tokyo Electron Limited
    Inventors: Masahiro Numakura, Yoshikazu Ishikawa, Toshihiko Hamada, Junya Sato, Toshiyuki Kobayashi, Shouichi Otake
  • Publication number: 20160190024
    Abstract: A substrate processing apparatus includes at least one process module configured to process first substrates. A position detector is configured to detect first positions of the first substrates. A control unit is configured to control the position detector so as to measure a second position of a second substrate selected from the first substrates to be processed in a same process module depending on a measurement interval set for the same process module.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 30, 2016
    Inventors: Masahiro NUMAKURA, Yoshikazu ISHIKAWA, Toshihiko HAMADA, Junya SATO, Toshiyuki KOBAYASHI, Shouichi OTAKE
  • Patent number: 9279671
    Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: March 8, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Yamazaki, Masahiro Shibata, Yoshikazu Ishikawa, Kazunori Ishii, Hideo Kawahara, Hitoshi Yasuda, Daisuke Ishikawa
  • Patent number: 9170100
    Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: October 27, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Yamazaki, Masahiro Shibata, Yoshikazu Ishikawa, Kazunori Ishii, Hideo Kawahara, Hitoshi Yasuda, Daisuke Ishikawa
  • Patent number: 8890961
    Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: November 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Yamazaki, Masahiro Shibata, Yoshikazu Ishikawa, Kazunori Ishii, Hideo Kawahara, Hitoshi Yasuda, Daisuke Ishikawa
  • Patent number: 8836994
    Abstract: The present invention has an objective of providing an image formation apparatus that can output binary image data on a printing medium with a favorable quality. According to the present invention, a plurality of different pieces of mask data stored in a storage unit is used to generate a plurality of different pieces of divided data. Then, the frequency characteristic information of the respective plurality of generated thinned images is calculated. Thereafter, the pieces of frequency characteristic information of the respective plurality of generated thinned images are compared to select, from among the plurality of pieces of mask data stored in the storage unit, a divided mask pattern to be used for the input image data. Then, the selected divided mask pattern is used to form the image.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: September 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yumi Yanai, Hiroshi Mori, Takahisa Akaishi, Yoshikazu Ishikawa, Misae Tasaki
  • Publication number: 20140152812
    Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.
    Type: Application
    Filed: February 5, 2014
    Publication date: June 5, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Yamazaki, Masahiro Shibata, Yoshikazu Ishikawa, Kazunori Ishii, Hideo Kawahara, Hitoshi Yasuda, Daisuke Ishikawa
  • Patent number: 8692894
    Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: April 8, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Yamazaki, Masahiro Shibata, Yoshikazu Ishikawa, Kazunori Ishii, Hideo Kawahara, Hitoshi Yasuda, Daisuke Ishikawa
  • Patent number: 8497913
    Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: July 30, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Yamazaki, Masahiro Shibata, Yoshikazu Ishikawa, Kazunori Ishii, Hideo Kawahara, Hitoshi Yasuda, Daisuke Ishikawa
  • Patent number: 8456709
    Abstract: Using a first lookup table used to convert color data on a device-independent color space into color data on a device-dependent color space, and a second lookup table used to convert the color data on the device-dependent color space into color material data corresponding to a plurality of color print materials, the image processing apparatus acquires output values using the first lookup table in accordance with input values the number of which is larger than the number of grid points of the first lookup table, acquires output values using the second lookup table, as input values, the output values acquired, and generates a third lookup table corresponding to the predetermined number of input values which is larger than the number of grid points of the first lookup table in accordance with the output values acquired.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: June 4, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsuru Uratani, Yumi Yanai, Shinichi Miyazaki, Toshiki Miyazaki, Hiroshi Mori, Yoshikazu Ishikawa
  • Publication number: 20130019209
    Abstract: An image processing apparatus acquires from a moving image, frames captured at predetermined time intervals or at positions of predetermined intervals with respect to a direction of gravity, and generates thumbnail images. The image processing apparatus then displays the thumbnail images in a display area at positions corresponding to the water depths at which the frames corresponding to the generated thumbnail images were captured.
    Type: Application
    Filed: June 18, 2012
    Publication date: January 17, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yoshikazu Ishikawa, Satoshi Ishimaru, Souichirou Shigeeda
  • Publication number: 20120281243
    Abstract: The present invention has an objective of providing an image formation apparatus that can output binary image data on a printing medium with a favorable quality. According to the present invention, a plurality of different pieces of mask data stored in a storage unit is used to generate a plurality of different pieces of divided data. Then, the frequency characteristic information of the respective plurality of generated thinned images is calculated. Thereafter, the pieces of frequency characteristic information of the respective plurality of generated thinned images are compared to select, from among the plurality of pieces of mask data stored in the storage unit, a divided mask pattern to be used for the input image data. Then, the selected divided mask pattern is used to form the image.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 8, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yumi Yanai, Hiroshi Mori, Takahisa Akaishi, Yoshikazu Ishikawa, Misae Tasaki
  • Publication number: 20120044526
    Abstract: A printing apparatus encodes masks used for thinning out print data when performing multi-pass printing and provided in correspondence with passes, and stores the encoded masks in a memory. The printing apparatus includes an assignment unit that assigns different codes with respect to pixels that indicate dot-on and are held in the masks provided in correspondence with the passes, depending on for which pass of mask processing the masks are used, and an encoding unit that generates, using the different codes, index data indicating pixels that indicate dot-on and are held in the masks corresponding to the passes, and generates encoded data by encoding the index data. Here, the encoding unit determines an assignment relationship in which the different codes are assigned to the passes by the assignment unit such that the encoded data is smaller than the data size of original masks, and generates the encoded data.
    Type: Application
    Filed: July 7, 2011
    Publication date: February 23, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Miyazaki, Yoshikazu Ishikawa, Toshiki Miyazaki, Mitsuru Uratani, Hiroshi Mori, Yumi Yanai