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: 8130418Abstract: The present invention provides an image processing apparatus having an image readout sensor that is provided with a plurality of pixels that optically read out an image, and a driving unit that moves the image readout sensor. The driving unit moves the image readout sensor, whereby the driving unit and the image readout sensor are controlled so that each of the plurality of pixels reads out a chart with a predetermined pattern. A feature amount of the plurality of pixels is calculated from the image data that has been read out by each pixel through the control, and MTF characteristics of the plurality of pixels are analyzed from the calculated feature amount. Then, nonuniformity of MTF characteristics of the plurality of pixels is corrected according to the analysis result.Type: GrantFiled: August 8, 2008Date of Patent: March 6, 2012Assignee: Canon Kabushiki KaishaInventor: Tohru Ikeda
-
Publication number: 20110316920Abstract: The present invention prints a plurality of ejection characteristics detection patterns with different print duties. Each of the patterns is divided into areas with a certain number of pixels, and each area is read with a plurality of different read colors. Based on the read values by the read color for each area, evaluation values by the read color that indicates ejection variation volume that is the difference between ink ejection volume to each area and standard ink ejection volume are set. A weighted average is obtained by applying the weight determined by reading accuracy of a reading unit to evaluation values by color for each area with different print duties formed by the same nozzle. The ejection characteristics of a nozzle that prints each of the areas are evaluated using the weighted average value.Type: ApplicationFiled: December 13, 2010Publication date: December 29, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Makoto Torigoe, Fumitaka Goto, Nobutaka Miyake, Tohru Ikeda, Akitoshi Yamada, Tomokazu Ishikawa
-
Publication number: 20110285777Abstract: An image processing apparatus, an image processing method, an inkjet printing apparatus and a data generating apparatus are provided that can reduce, when a plurality of types of inks are used to print an image, the color unevenness that is caused by the variation of ejecting characteristics among a plurality of nozzles. A conversion table for correcting, based on an ejecting characteristic, a multi dimensional color printed by ejecting at least two types of inks on a common region on a printing medium is used to correct a plurality of color signals corresponding to these inks.Type: ApplicationFiled: December 13, 2010Publication date: November 24, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Fumitaka Goto, Akitoshi Yamada, Tomokazu Ishikawa, Tohru Ikeda, Nobutaka Miyake, Makoto Torigoe
-
Publication number: 20110285778Abstract: Printing heads of combinations of four ink colors and seven printing characteristic ranks are previously used to print an image for measurement, and table parameters corresponding to all of the combinations of nozzle ink colors and printing characteristic ranks are obtained on the basis of a measurement result of this image for measurement and stored in a memory. Then, when printing is actually performed in a printer, a primary color image for measurement is printed for each nozzle of a printing head for each of four ink colors. A printing characteristic rank for each nozzle is obtained for each of four ink colors based on a measurement result of this image for measurement, and a table parameter is selected that corresponds to the same combination as the combination of the obtained printing characteristic rank of each nozzle of four ink colors, by referring to the memory.Type: ApplicationFiled: December 13, 2010Publication date: November 24, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tomokazu Ishikawa, Fumitaka Goto, Mitsuhiro Ono, Akitoshi Yamada, Tohru Ikeda, Nobutaka Miyake, Makoto Torigoe
-
Publication number: 20110285779Abstract: An image processor, a printing apparatus, and an image processing method are provided that can reduce, when a plurality of types of inks are used to print an image, the color unevenness that is caused by the variation of ejecting characteristics among a pluralities of nozzles. To realize this, for a color formed by overlapping at least two colors of inks, parameters are prepared that are determined so as to reduce the color difference in the printing medium due to the variation of the ejecting characteristic among the respective pluralities of nozzles. During printing, the parameters are used to correct the first color signal owned by the individual pixels to the second color signal.Type: ApplicationFiled: December 13, 2010Publication date: November 24, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Akitoshi Yamada, Fumitaka Goto, Tomokazu Ishikawa, Tohru Ikeda, Nobutaka Miyake, Makoto Torigoe
-
Publication number: 20110286020Abstract: The present invention is intended to provide an image processor that can reduce color unevenness occurring in a composite color image formed by overlapping different types of inks due to a variation in printing characteristic among a plurality of nozzles while suppressing a reduction in processing speed in generation of printing data. The image processor converts a color signal indicating the image represented by a plurality of elements to a color signal corresponding to the plurality of inks with use of a conversion table determined on the basis of ejection characteristics of nozzle groups corresponding to the plurality of inks so as to suppress color unevenness occurring in a composite color image due to a variation in ejection characteristic among the plurality of nozzles.Type: ApplicationFiled: May 18, 2011Publication date: November 24, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tomokazu Ishikawa, Akitoshi Yamada, Fumitaka Goto, Tohru Ikeda, Nobutaka Miyake, Makoto Torigoe
-
Publication number: 20110285780Abstract: The present invention reduces an uneven color of a color having two or more colors of inks, the uneven color occurring due to manufacturing variations of ink ejection nozzles and so on. Each of a plurality of correction tables that is assigned to each predetermined number of nozzles that are used for printing on a common region in the print medium, of a plurality of nozzle arrays formed on a print head, each of the nozzle arrays ejecting a plurality of inks including a first ink and a second ink whose color is different from the color of the first ink, is generated on the basis of at least an ink ejection property of nozzles ejecting the first and second inks.Type: ApplicationFiled: May 18, 2011Publication date: November 24, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Akitoshi Yamada, Nobutaka Miyake, Makoto Torigoe, Tohru Ikeda, Fumitaka Goto, Tomokazu Ishikawa
-
Patent number: 8008562Abstract: An image processing apparatus that processes image data representing a musical score inputs image data of a musical score document to the image processing apparatus, detects a blank area in the musical score based on the input image data, and generates image data in which an assistance sign has been added in the blank area in correspondence with a sign in the musical score.Type: GrantFiled: February 25, 2010Date of Patent: August 30, 2011Assignee: Canon Kabushiki KaishaInventors: Tohru Ikeda, Fumihiro Goto, Manabu Yamazoe, Maya Ishii, Ayumi Sano, Hidetsugu Kagawa
-
Publication number: 20110061228Abstract: 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: ApplicationFiled: May 13, 2009Publication date: March 17, 2011Applicant: HONDA MOTOR CO.,LTD.Inventors: Shunichi Umino, Ryoichi Ashino, Tohru Ikeda
-
Publication number: 20110032581Abstract: 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: ApplicationFiled: July 26, 2010Publication date: February 10, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Tohru Ikeda
-
Patent number: 7842871Abstract: Image data of sheet music formed from a plurality of pages is input, and the input image data is divided into bars. The complexity of performance of each divided bar is determined for each page. An easy-to-play portion is detected as a page feed position for each page in accordance with the determination result. The layout of the sheet music is changed based on the detected page feed position, and the layout-changed sheet music is output.Type: GrantFiled: December 15, 2008Date of Patent: November 30, 2010Assignee: Canon Kabushiki KaishaInventors: Maya Ishii, Fumihiro Goto, Ayumi Hori, Manabu Yamazoe, Tohru Ikeda, Hidetsugu Kagawa
-
Publication number: 20100236381Abstract: An image processing apparatus that processes image data representing a musical score inputs image data of a musical score document to the image processing apparatus, detects a blank area in the musical score based on the input image data, and generates image data in which an assistance sign has been added in the blank area in correspondence with a sign in the musical score.Type: ApplicationFiled: February 25, 2010Publication date: September 23, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Tohru Ikeda, Fumihiro Goto, Manabu Yamazoe, Maya Ishii, Ayumi Sano, Hidetsugu Kagawa
-
Publication number: 20100157395Abstract: 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: ApplicationFiled: December 9, 2009Publication date: June 24, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Tohru Ikeda, Takashi Nakamura, Fumihiro Goto, Akitoshi Yamada, Hidetsugu Kagawa
-
Patent number: 7739011Abstract: A vehicle motion state control device controls an actuator capable of regulating a vehicle motion state so that an actual yaw rate approaches a target yaw rate determined based on a steer angle and a vehicle speed, target yaw rate limit values for left and right turn directions of a vehicle are individually determined by a target yaw rate limit value determining mechanism based on detected lateral acceleration, detected vehicle speed, and predetermined set minimum lateral acceleration set in a direction opposite to that of the detected lateral acceleration; and target yaw rates for the left and right turn directions are determined by a target yaw rate determining mechanism while limiting them by the determined target yaw rate limit values. Thus, an oversteer control is started at an early timing when an abrupt steering operation at a large steer angle occurs which causes a phase difference to the yaw rate and the lateral acceleration.Type: GrantFiled: February 27, 2006Date of Patent: June 15, 2010Assignee: Honda Motor Co., Ltd.Inventors: Susumu Takahashi, Tohru Ikeda
-
Patent number: 7639399Abstract: A plurality of items of color-component data representing an image are input and a plurality of items of output color-component data representing an image to be reproduced by a printer are decided and output. In the case of an image in a specific area in which an entered image is represented by at least two items of color-component data, any one item of color-component data is decided upon as output color-component data.Type: GrantFiled: January 27, 2004Date of Patent: December 29, 2009Assignee: Canon Kabushiki KaishaInventor: Tohru Ikeda
-
Publication number: 20090300906Abstract: A nozzle unit includes first, second, and third nozzles for discharging a sealant, and is movable toward and away from a stator by a vertically moving unit. The stator is disposed in a position facing the nozzle unit and is angularly movable successively through given angles by a rotary unit. The first, second, and third nozzles are moved radially outwardly in synchronism with each other by a link mechanism, and then lowered by the vertically moving unit at a position facing a first filling groove or a second filling groove of the stator. The first, second, and third nozzles thus lowered introduce the sealant into the first filling groove or the second filling groove.Type: ApplicationFiled: June 1, 2009Publication date: December 10, 2009Applicant: HONDA MOTOR CO., LTDInventors: Shunichi UMINO, Kohei Fujinoto, Tohru Ikeda, Shinji Kazama
-
Publication number: 20090161182Abstract: 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: ApplicationFiled: December 19, 2008Publication date: June 25, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Akitoshi Yamada, Tohru Ikeda, Hidetsugu Kagawa, Fumihiro Goto, Takashi Nakamura
-
Publication number: 20090158915Abstract: Image data of sheet music formed from a plurality of pages is input, and the input image data is divided into bars. The complexity of performance of each divided bar is determined for each page. An easy-to-play portion is detected as a page feed position for each page in accordance with the determination result. The layout of the sheet music is changed based on the detected page feed position, and the layout-changed sheet music is output.Type: ApplicationFiled: December 15, 2008Publication date: June 25, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Maya Ishii, Fumihiro Goto, Ayumi Hori, Manabu Yamazoe, Tohru Ikeda, Hidetsugu Kagawa
-
Publication number: 20090161138Abstract: 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: ApplicationFiled: December 19, 2008Publication date: June 25, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Nakamura, Fumihiro Goto, Tohru Ikeda, Akitoshi Yamada, Hidetsugu Kagawa
-
Publication number: 20090161917Abstract: 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: ApplicationFiled: December 19, 2008Publication date: June 25, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Ayumi Hori, Hidetsugu Kagawa, Fumihiro Goto, Manabu Yamazoe, Maya Ishii, Tohru Ikeda