Patents by Inventor Tohru Ikeda

Tohru Ikeda 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: 8514443
    Abstract: There is provided an image processing method of laying out and outputting an image of an original formed from a plurality of pages on one page, the method comprising: inputting image data of the original formed from the plurality of pages; dividing the image data input in the inputting into a plurality of blocks; discarding unnecessary information; appending necessary information to each block obtained by division in the dividing based on the predetermined rule; replacing the respective blocks obtained by division in the dividing with the block from which the unnecessary information is discarded in the discarding, and the block to which the necessary information is appended in the appending; and outputting the respective blocks which have undergone replacement in the replacing by laying out the respective blocks on one page.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: August 20, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumihiro Goto, Ayumi Hori, Manabu Yamazoe, Tohru Ikeda, Maya Ishii, Hidetsugu Kagawa
  • Patent number: 8472076
    Abstract: This invention is directed to an image processing apparatus and method capable of analyzing a character image to detect a blur, and reducing the blur on a printed product. According to the method, a scanner reads an original character image, generating image data. A blur and deterioration of a character image represented by the image data are detected. Portions corresponding to the detected blur or the deterioration are removed from the image data. The image data from which the portions corresponding to the blur or the deterioration are removed is output to an image output unit.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: June 25, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tohru Ikeda
  • Patent number: 8345331
    Abstract: This invention is directed to an image reading apparatus. In the apparatus, reading an original by irradiating it with light of three primary colors, respectively, and by receiving the reflected light is performed as follows. More specifically, an operation mode is designated, and conditions used to perform image reading are set in accordance with the designated mode. Under the set conditions, the image reading is performed according to a method of irradiating an original sequentially with beams of the three primary colors and reading the beams reflected by the original. Alternatively, under the set conditions, image reading is performed according to a method of irradiating an original simultaneously with beams of two primary colors in each of three different combinations of the three primary colors and reading the beams reflected by the original. Instead, image reading is executed twice according to these two methods.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tohru Ikeda, Takashi Nakamura, Fumihiro Goto, Akitoshi Yamada, Hidetsugu Kagawa
  • Publication number: 20120327151
    Abstract: When the width of a recording head is greater than the width of a recording medium having a maximum conveyable width, a recorded image corresponding to ejecting ports in the entire area of the recording head cannot be corrected. Multiple correction test patterns are recorded using ejecting ports in part of the recording head, and correction data for correcting an image corresponding to ejecting ports in the entire area of the recording head on the basis of the colorimetric result of the test patterns. In this way, image data to be recorded by the ejecting ports in the entire area of the recording head is corrected.
    Type: Application
    Filed: September 6, 2012
    Publication date: December 27, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tohru Ikeda, Nobutaka Miyake, Akitoshi Yamada, Fumitaka Goto, Tomokazu Ishikawa, Mitsuhiro Ono, Hidetsugu Kagawa, Junichi Nakagawa, Ryosuke Iguchi
  • Publication number: 20120300266
    Abstract: A sheet music creation method of creating sheet music whose layout is changed based on image data of sheet music input from an input device includes the steps of dividing the image data of the sheet music input from the input device into grand staffs, designating the grand staffs divided in the dividing in the order of performance, and re-editing, by a processor, image data representing the grand staffs in accordance with the order designated in the designating.
    Type: Application
    Filed: August 3, 2012
    Publication date: November 29, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Manabu Yamazoe, Fumihiro Goto, Ayumi Hori, Tohru Ikeda, Maya Ishii, Hidetsugu Kagawa
  • Patent number: 8312620
    Abstract: Equipment for manufacturing a stator comprises a coil conduction mechanism which can supply a current to input terminals of a stator, and a heater mechanism having first and second panel heaters which are provided to face the stator. Heat is generated from a coil by supplying a current to the coil from the coil conduction mechanism and sealants filling the stator are heated. On the other hand, the first and second panel heaters are heated by supplying a current and the sealants are heated from the outside. The operation is controlled such that the heating temperature for the sealants by heat generated from the coil and the heating temperature for the sealants by the heater mechanism are uniform.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: November 20, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shunichi Umino, Ryoichi Ashino, Tohru Ikeda
  • Patent number: 8308268
    Abstract: When the width of a recording head is greater than the width of a recording medium having a maximum conveyable width, a recorded image corresponding to ejecting ports in the entire area of the recording head cannot be corrected. Multiple correction test patterns are recorded using ejecting ports in part of the recording head, and correction data for correcting an image corresponding to ejecting ports in the entire area of the recording head on the basis of the colorimetric result of the test patterns. In this way, image data to be recorded by the ejecting ports in the entire area of the recording head is corrected.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: November 13, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tohru Ikeda, Nobutaka Miyake, Akitoshi Yamada, Fumitaka Goto, Tomokazu Ishikawa, Mitsuhiro Ono, Hidetsugu Kagawa, Junichi Nakagawa, Ryosuke Iguchi
  • Patent number: 8294955
    Abstract: This invention is directed to provide a method capable of performing filter processing suitable for each of different image reading methods. This method includes the steps of causing a light emitting unit to sequentially irradiate an image original with light components of three primary colors and read the image original, and causing the light emitting unit to simultaneously irradiate the image original with one of three different color combinations, which includes two of the light components of three primary colors, and read the image original. The method further includes the step of processing image data obtained based on the reflected light received by the light receiving unit after changing a filter to be used for image processing depending on whether reading of the image original is primary color reading or complementary color reading.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 23, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidetsugu Kagawa, Tohru Ikeda, Takashi Nakamura, Fumihiro Goto, Akitoshi Yamada
  • Patent number: 8275203
    Abstract: A sheet music processing method of processing, by an image processing apparatus, image data of sheet music input by an input device, the method comprising setting, by a user using a designation unit of the image processing apparatus, a unit in which the image data of the sheet music is processed; dividing the image data of the sheet music into units corresponding to the unit; determining whether image data of a first one of the units is repeated in one or more others of the units; and processing the image data, when the image data of the first one of the units is determined to be repeated in the one or more others of the units, to append information using the image processing apparatus to the image data of the first one of the units and the image data of the one or more others of the units.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: September 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ayumi Hori, Hidetsugu Kagawa, Fumihiro Goto, Manabu Yamazoe, Maya Ishii, Tohru Ikeda
  • Patent number: 8243351
    Abstract: This invention is directed to a method capable of performing satisfactory image reading by absorbing variations in each apparatus. According to this method, in primary color reading, light emitting unit sequentially irradiates an image original with light components of three primary colors and reads the image original, and in complementary color reading, the light emitting unit simultaneously irradiates the image original with one of three different color combinations, which includes two of the light components of three primary colors, and reads the image original. Each of the primary and complementary color readings includes image processing of executing shading correction of image data based on calibration data obtained by calibrating the light emitting unit when reading the image original.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: August 14, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akitoshi Yamada, Tohru Ikeda, Hidetsugu Kagawa, Fumihiro Goto, Takashi Nakamura
  • Patent number: 8237986
    Abstract: This invention is directed to a method capable of performing appropriate under color removal in image original reading. According to this method, under color removal of the original is performed as follows. A printing medium without any printed image is read by primary and complementary color readings. A brightness signal distribution is generated by converting, using a provisional table, each of image data generated by the reading methods. The lowest one of signal levels is selected from each of the distributions. In correspondence with each of the primary and complementary color readings, a conversion table is formed, which converts the image data to make a pixel value corresponding to the selected lowest one of the signal levels to a value representing white. Under color removal of the image data is performed using a corresponding conversion table in accordance with the reading method of the image original.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: August 7, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Nakamura, Fumihiro Goto, Tohru Ikeda, Akitoshi Yamada, Hidetsugu Kagawa
  • Publication number: 20120113183
    Abstract: When the width of a recording head is greater than the width of a recording medium having a maximum conveyable width, a recorded image corresponding to ejecting ports in the entire area of the recording head cannot be corrected. Multiple correction test patterns are recorded using ejecting ports in part of the recording head, and correction data for correcting an image corresponding to ejecting ports in the entire area of the recording head on the basis of the colorimetric result of the test patterns. In this way, image data to be recorded by the ejecting ports in the entire area of the recording head is corrected.
    Type: Application
    Filed: December 9, 2010
    Publication date: May 10, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tohru Ikeda, Nobutaka Miyake, Akitoshi Yamada, Fumitaka Goto, Tomokazu Ishikawa, Mitsuhiro Ono, Hidetsugu Kagawa, Junichi Nakagawa, Ryosuke Iguchi
  • Publication number: 20120081436
    Abstract: When printing an image using a plurality of inks, color unevenness caused by variations in ejection characteristics among nozzles is corrected at suitable timings in accordance with change in the color unevenness over time, and favorable image output without noticeably color unevenness is maintained. For this purpose, parameters are prepared, for colors formed by combinations of at least two colors of ink, the parameters being determined so as to reduce differences in coloration on a print medium caused by individual variations in the ejection characteristics of a plurality of nozzles. When printing, a first color signal included in individual pixels is corrected for a second color signal by using the parameters. Information regarding the ejection volume characteristics of a plurality of nozzles is acquired as appropriate, and by estimating changes in coloration from this information, suitable timings for overwriting such parameters are determined.
    Type: Application
    Filed: December 9, 2010
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Akitoshi Yamada, Ryosuke Iguchi, Nobutaka Miyake, Tohru Ikeda, Mitsuhiro Ono, Fumitaka Goto, Hidetsugu Kagawa, Tomokazu Ishikawa, Junichi Nakagawa, Senichi Saito
  • Publication number: 20120081444
    Abstract: Provided are an image processing apparatus and an image processing method capable of reducing color unevenness due to variations in ejection characteristics among a plurality of nozzles when printing an image using a plurality of inks. To that end, a first image which is made up a color with noticeable color unevenness and similar colors is printed onto a print medium. The user then specifies a color and a nozzle position where color unevenness has occurred. On the basis of these results, parameters are set for a correction table referenced by are MCS processor. In so doing, it becomes possible to address the factor causing the color unevenness, and mitigate the effects of color unevenness in a focused way without incurring increases in processor load, memory requirements, or processing time as compared to the case of calibrating all lattice points.
    Type: Application
    Filed: December 13, 2010
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Senichi Saito, Ryosuke Iguchi, Nobutaka Miyake, Tohru Ikeda, Akitoshi Yamada, Mitsuhiro Ono, Fumitaka Goto, Hidetsugu Kagawa, Tomokazu Ishikawa, Junichi Nakagawa
  • Publication number: 20120081443
    Abstract: In the present invention, joint sections and non-joint sections are formed in nozzle arrays of a plurality of chips arranged in a print head. Correction values for correcting input image data are calculated for reducing color difference caused by variation in the ejection characteristics of the nozzles. In this calculation of correction values, first a first correction value corresponding to first nozzles that form a color measurement area is calculated based on the color measurement value obtained by measuring the color of a discrete color measurement area included in a patch formed by a nozzle array. Next, a second correction value for correcting input image data corresponding to second nozzles of the nozzle array is calculated based on the first correction value. Different complementary processing is used when calculating the second correction value corresponding to a non-joint section, and when calculating the second correction value corresponding to a joint section.
    Type: Application
    Filed: December 13, 2010
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Mitsuhiro Ono, Ryosuke Iguchi, Nobutaka Miyake, Tohru Ikeda, Akitoshi Yamada, Fumitaka Goto, Hidetsugu Kagawa, Tomokazu Ishikawa, Junichi Nakagawa, Senichi Saito
  • Publication number: 20120081768
    Abstract: An image processing apparatus is provided that is capable of very accurately and efficiently reducing uneven color caused by variation in ejection characteristics among nozzles that eject ink and that occurs in a color image that is formed by mixing a plurality of different kinds of ink. A patch is printed by ejected ink from a plurality of nozzles, a region is specified so as to perform color correction in a test color image that is printed on a printing medium, a plurality of different color correction processing is performed on color signals that correspond to a color correction region, a plurality of color correction patches are printed, a color correction patch to be used is selected from among the plurality of different color correction patches and table parameters that correspond to the nozzles are created based on the selected color correction processing.
    Type: Application
    Filed: December 13, 2010
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryosuke Iguchi, Nobutaka Miyake, Tohru Ikeda, Akitoshi Yamada, Mitsuhiro Ono, Fumitaka Goto, Hidetsugu Kagawa, Tomokazu Ishikawa, Junichi Nakagawa, Senichi Saito
  • Publication number: 20120081439
    Abstract: The invention decreases the enlargement of memory and processing time for the correction of image data carried out to reduce image deterioration caused by nozzle ejection characteristic variation in an inkjet printing apparatus. Print heads are provided with pluralities of chips that have nozzle arrays formed from a plurality of nozzles. Coupled portions and non-overlap portions are formed on each chip. An image processing apparatus sets input image data, which correspond to nozzle regions that are defined in nozzle arrays along the alignment direction of the nozzles of the print head and that are composed of a plurality of nozzles, as processing blocks. The input image data is processed according to parameters defined for each of those processing blocks. The boundaries of the nozzle regions corresponding to the input image data of the processing blocks are established according to the boundaries of the overlap portions and the non-overlap portions.
    Type: Application
    Filed: September 28, 2011
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Fumitaka GOTO, Nobutaka Miyake, Tohru Ikeda, Akitoshi Yamada, Mitsuhiro Ono, Ryosuke Iguchi, Hidetsugu Kagawa, Tomokazu Ishikawa, Junichi Nakagawa
  • Publication number: 20120081441
    Abstract: Provided is an image processing apparatus that can accurately and efficiently reduce color unevenness that occurs in a color image, which is formed by color mixture of a plurality of different types of inks, due to a variation in ejection characteristic among nozzles. The inks are respectively ejected from the nozzle arrays to print patches; regions where color correction for test color images should be performed are specified; a different types of color correction processing for color signals corresponding to the color correction regions are performed to print color correction patches; a color correction patch to be used is selected; on the basis of selected color correction processing, a table parameter corresponding to a nozzle is formed; when the plurality of color correction patches are formed, only correction candidate values having larger color differences than a predetermined threshold value in a uniform color space are generated for color signals.
    Type: Application
    Filed: December 13, 2010
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Nobutaka Miyake, Ryosuke Iguchi, Tohru Ikeda, Akitoshi Yamada, Mitsuhiro Ono, Fumitaka Goto, Hidetsugu Kagawa, Tomokazu Ishikawa, Junichi Nakagawa, Senichi Saito
  • Publication number: 20120081442
    Abstract: Area information is obtained with respect to a specified color and nozzle position having color unevenness. Then, coordinate information indicating a nozzle position corresponding to the above area information is obtained in a printing head or nozzle array corresponding to an ink color relating to the specified color information. Next, the number of candidate correction values or candidate patches is obtained on the basis of nozzle coordinates obtained corresponding to the area, by referring to a table. In this table, for example, the number of candidate correction values is small at a nozzle position where an effect due to the variations of nozzle ejection characteristics such as a nozzle ejection volume is small and a change direction is constant, and the number of candidate correction values is large at a nozzle position where an effect due to variations of nozzle ejection characteristics is large.
    Type: Application
    Filed: December 13, 2010
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tohru Ikeda, Ryosuke Iguchi, Nobutaka Miyake, Akitoshi Yamada, Mitsuhiro Ono, Fumitaka Goto, Hidetsugu Kagawa, Tomokazu Ishikawa, Junichi Nakagawa, Senichi Saito
  • Publication number: 20120081449
    Abstract: In the present invention, a first calculation unit calculates, based on image data obtained by reading with a reading unit a plurality of patches formed on a printing medium by a plurality of nozzle regions constituting nozzle array of a printing head, respective color specification values of a plurality of correction regions corresponding to a plurality of nozzle regions constituting the nozzle array. Then, a target value setting unit sets, based on the calculated color specification values of the plurality of correction regions, a target color specification value of the patch. Further, a second calculation unit calculates a difference between each of the color specification values of the plurality of correction regions and the target color specification value as a correction amount. After that, based on the correction amount calculated, image data corresponding to an image printed by each of the plurality of nozzle regions are corrected.
    Type: Application
    Filed: December 9, 2010
    Publication date: April 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hidetsugu Kagawa, Nobutaka Miyake, Tohru Ikeda, Akitoshi Yamada, Mitsuhiro Ono, Fumitaka Goto, Ryosuke Iguchi, Tomokazu Ishikawa, Junichi Nakagawa, Senichi Saito