Patents by Inventor Masanao Motoyama
Masanao Motoyama 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).
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Patent number: 11301182Abstract: A control apparatus includes: an acquisition unit configured to acquire measurement data in continuous printing in which print images corresponding to a plurality of pages generated based on print data are continuously printed, the measurement data being data obtained by measuring a status of an image forming apparatus while the image forming apparatus is printing a print image for at least one measurement target page out of the plurality of pages without using a rest of the plurality of pages as measurement target pages; and a prediction unit configured to perform processing of predicting a possibility of a malfunction of the image forming apparatus using the measurement data.Type: GrantFiled: July 8, 2020Date of Patent: April 12, 2022Assignee: CANON KABUSHIKI KAISHAInventor: Masanao Motoyama
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Publication number: 20210011670Abstract: A control apparatus includes: an acquisition unit configured to acquire measurement data in continuous printing in which print images corresponding to a plurality of pages generated based on print data are continuously printed, the measurement data being data obtained by measuring a status of an image forming apparatus while the image forming apparatus is printing a print image for at least one measurement target page out of the plurality of pages without using a rest of the plurality of pages as measurement target pages; and a prediction unit configured to perform processing of predicting a possibility of a malfunction of the image forming apparatus using the measurement data.Type: ApplicationFiled: July 8, 2020Publication date: January 14, 2021Inventor: Masanao Motoyama
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Patent number: 10713757Abstract: An image processing apparatus including an input unit configured to input image data of a target frame, a first processing unit configured to perform a first processing for output image data of a reference frame related to the target frame, which is stored in the memory, to change positions of pixels in the output image data, an image processing unit configured to perform image processing for the image data of the target frame input by the input unit based on the output image data of the reference frame processed by the first processing unit, and a second processing unit configured to perform a second processing, the second processing being according to the first processing, for the image data of the target frame for which image processing has been performed by the image processing unit and to store the processed image data in the memory as output image data of the target frame.Type: GrantFiled: September 11, 2018Date of Patent: July 14, 2020Assignee: Canon Kabushiki KaishaInventors: Masashi Niwa, Masanao Motoyama
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Patent number: 10523141Abstract: A motor control apparatus that applies a pulse voltage for each phase of a three phase brushless motor to make current flow, the apparatus provided with: a generating unit for causing the pulse voltage to be generated by shifting the phase of the pulse voltage for each phase of the three phase brushless motor; and a detecting unit for detecting a current flowing to a coil of each phase of the three phase brushless motor to which the pulse voltage is applied by switching by a predetermined sampling period for each phase one-by-one, wherein a relationship between the sampling period of the detecting unit and a phase shift amount of the pulse voltage of each phase generated by the generating unit is set so that the detecting unit can detect the current for each phase of the three phase brushless motor.Type: GrantFiled: April 2, 2018Date of Patent: December 31, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Masanao Motoyama, Toshiaki Minami
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Publication number: 20190005622Abstract: An image processing apparatus including: an input unit configured to input image data of a target frame; a first processing unit configured to perform a first processing for output image data of a reference frame related to the target frame, which is stored in the memory, to change positions of pixels in the output image data; an image processing unit configured to perform image processing for the image data of the target frame input by the input unit based on the output image data of the reference frame processed by the first processing unit; and a second processing unit configured to perform a second processing, the second processing is according to the first processing, for the image data of the target frame for which image processing has been performed by the image processing unit and store the processed image data in the memory as output image data of the target frame.Type: ApplicationFiled: September 11, 2018Publication date: January 3, 2019Inventors: Masashi Niwa, Masanao Motoyama
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Publication number: 20180294752Abstract: A motor control apparatus that applies a pulse voltage for each phase of a three phase brushless motor to make current flow, the apparatus provided with: a generating unit for causing the pulse voltage to be generated by shifting the phase of the pulse voltage for each phase of the three phase brushless motor; and a detecting unit for detecting a current flowing to a coil of each phase of the three phase brushless motor to which the pulse voltage is applied by switching by a predetermined sampling period for each phase one-by-one, wherein a relationship between the sampling period of the detecting unit and a phase shift amount of the pulse voltage of each phase generated by the generating unit is set so that the detecting unit can detect the current for each phase of the three phase brushless motor.Type: ApplicationFiled: April 2, 2018Publication date: October 11, 2018Inventors: Masanao Motoyama, Toshiaki Minami
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Patent number: 9760815Abstract: With this invention, color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing generation of moiré due to the color shifting correction, and forming a high-quality image. To this end, an image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts with respect to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units C, M, Y, and K calculate color shifting correction amounts for respective color components on the basis of the stored color shifting amounts.Type: GrantFiled: January 16, 2015Date of Patent: September 12, 2017Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takada, Hiroki Kitamura, Yoshiyuki Akiba, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka
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Publication number: 20150131129Abstract: With this invention, color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing generation of moiré due to the color shifting correction, and forming a high-quality image. To this end, an image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts with respect to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units C, M, Y, and K calculate color shifting correction amounts for respective color components on the basis of the stored color shifting amounts.Type: ApplicationFiled: January 16, 2015Publication date: May 14, 2015Inventors: Tsutomu Takada, Hiroki Kitamura, Yoshiyuki Akiba, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka
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Patent number: 8964253Abstract: Color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing caused by color shifting correction, and forming a high-quality image. An image forming engine has color shifting amount storage units storing actual shifting amounts with respect to ideal scan directions on image carriers in image forming units. Color shifting correction amount arithmetic units calculate color shifting correction amounts for respective color components using stored color shifting amounts. Color shifting correction units perform color shifting correction by converting coordinates upon reading image data from bitmap memories using calculated color shifting correction amounts, and perform tone correction. Data after tone correction undergo halftone processing.Type: GrantFiled: October 9, 2013Date of Patent: February 24, 2015Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takada, Hiroki Kitamura, Yoshiyuki Akiba, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka
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Publication number: 20140118755Abstract: Color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing caused by color shifting correction, and forming a high-quality image. An image forming engine has color shifting amount storage units storing actual shifting amounts with respect to ideal scan directions on image carriers in image forming units. Color shifting correction amount arithmetic units calculate color shifting correction amounts for respective color components using stored color shifting amounts. Color shifting correction units perform color shifting correction by converting coordinates upon reading image data from bitmap memories using calculated color shifting correction amounts, and perform tone correction. Data after tone correction undergo halftone processing.Type: ApplicationFiled: October 9, 2013Publication date: May 1, 2014Applicant: Canon Kabushiki KaishaInventors: Tsutomu Takata, Hiroki Kitamura, Yoshiyuki Akiba, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka
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Patent number: 8570594Abstract: With this invention, color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing generation of moiré due to the color shifting correction, and forming a high-quality image. To this end, an image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts with respect to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units C, M, Y, and K calculate color shifting correction amounts for respective color components on the basis of the stored color shifting amounts.Type: GrantFiled: March 2, 2010Date of Patent: October 29, 2013Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takata, Hiroki Kitamura, Yoshiyuki Akiba, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka
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Patent number: 8531497Abstract: An image forming apparatus includes a light beam output unit configured to output a light beam, a deflection unit for deflection scanning in a main scanning direction of a photosensitive member by reflecting the light beam from the light beam output unit, a timing information detection unit configured to detect timing information of the deflection scanning by the deflection unit, a calculation unit configured to calculate a correction amount of the main scanning direction for a next scan based on the timing information, a light beam modulation control unit configured to generate a light beam modulation signal based on image data and the correction amount, and a drive unit configured to drive the light beam output unit based on the light beam modulation signal.Type: GrantFiled: June 24, 2008Date of Patent: September 10, 2013Assignee: Canon Kabushiki KaishaInventor: Masanao Motoyama
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Patent number: 8068259Abstract: A color image forming apparatus of a so-called tandem type which has image forming units in correspondence with colors is provided. In the color image forming apparatus, a color discrepancy amount storage unit stores information of a color discrepancy amount of each of the image forming units, which is measured in advance. A first color discrepancy correcting unit performs color discrepancy correction in a pixel unit by performing coordinate conversion of bitmap data to be printed based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit. A second color discrepancy correcting unit performs color discrepancy correction in less than a pixel unit by performing tone correction of the bitmap data corrected by the first color discrepancy correcting unit based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit.Type: GrantFiled: October 21, 2009Date of Patent: November 29, 2011Assignee: Canon Kabushiki KaishaInventors: Kenzo Tojima, Hiroki Kitamura, Yoshiyuki Akiba, Tsutomu Takata, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Takaaki Nagaoka
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Publication number: 20100220342Abstract: With this invention, color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing generation of moiré due to the color shifting correction, and forming a high-quality image. To this end, an image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts with respect to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units C, M, Y, and K calculate color shifting correction amounts for respective color components on the basis of the stored color shifting amounts.Type: ApplicationFiled: March 2, 2010Publication date: September 2, 2010Applicant: Canon Kabushiki KaishaInventors: Tsutomu Takata, Hiroki Kitamura, Yoshiyuki Akiba, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka
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Patent number: 7770994Abstract: A shifting amount of color compensation amount is calculated based on a shifting amount of color obtained from a shifting amount of color storage unit for each image forming unit, and shifting amount of color compensation in the pixel unit is performed by executing address conversion using the calculation result. A feature of an image to be processed is detected, and color density conversion compensation for performing shifting amount of color compensation in less than the pixel unit is performed according to the detected feature. Furthermore, half-tone processing or exceptional processing is selectively executed according to the detected feature.Type: GrantFiled: January 3, 2008Date of Patent: August 10, 2010Assignee: Canon Kabushiki KaishaInventors: Hiroki Kitamura, Yoshiyuki Akiba, Tsutomu Takada, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka
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Patent number: 7746366Abstract: An image output apparatus which outputs a high quality image by using a small number of pixel clock generation units, for use with a printing engine which has a plurality of laser beam control units. The image output apparatus includes a plurality of output units which output video signals based on print data to the respective laser beam control units in synchronization with a clock signal; and a plurality of clock control units which are arranged in correspondence with respective groups, that are prepared by grouping the plurality of output units, so as to decrease an optical path difference between laser beams controlled by the corresponding laser beam control unit. Each of the clock control units generates the clock signal on the basis of a synchronizing signal generated in the printing engine, and outputs the generated clock signal to output units belonging to a corresponding group.Type: GrantFiled: November 15, 2005Date of Patent: June 29, 2010Assignee: Canon Kabushiki KaishaInventor: Masanao Motoyama
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Publication number: 20100079820Abstract: A color image forming apparatus of a so-called tandem type which has image forming units in correspondence with colors is provided. In the color image forming apparatus, a color discrepancy amount storage unit stores information of a color discrepancy amount of each of the image forming units, which is measured in advance. A first color discrepancy correcting unit performs color discrepancy correction in a pixel unit by performing coordinate conversion of bitmap data to be printed based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit. A second color discrepancy correcting unit performs color discrepancy correction in less than a pixel unit by performing tone correction of the bitmap data corrected by the first color discrepancy correcting unit based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit.Type: ApplicationFiled: October 21, 2009Publication date: April 1, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Kenzo Tojima, Hiroki Kitamura, Yoshiyuki Akiba, Tsutomu Takata, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Takaaki Nagaoka
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Patent number: 7684079Abstract: An image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts relative to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units calculate color shifting correction amounts for respective color components to base on the stored color shifting amounts. Color shifting correction units C, M, Y, and K perform color shifting correction by converting coordinates upon reading out image data from bitmap memories C, M, Y, and K on the basis of the calculated color shifting correction amounts, and then perform tone correction. Data after tone correction undergo halftone processing by halftone processors. C, M, Y, and K to suppress moire. PWM processors C, M, Y, and K generate PWM signals for scanning, and output them to exposure units C, M, Y, and K of the respective image forming units.Type: GrantFiled: November 16, 2005Date of Patent: March 23, 2010Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takata, Hiroki Kitamura, Yoshiyuki Akiba, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka
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Patent number: 7630100Abstract: A color image forming apparatus of a so-called tandem type which has image forming units in correspondence with colors is provided. In the color image forming apparatus, a color discrepancy amount storage unit stores information of a color discrepancy amount of each of the image forming units, which is measured in advance. A first color discrepancy correcting unit performs color discrepancy correction in a pixel unit by performing coordinate conversion of bitmap data to be printed based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit. A second color discrepancy correcting unit performs color discrepancy correction in less than a pixel unit by performing tone correction of the bitmap data corrected by the first color discrepancy correcting unit based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit.Type: GrantFiled: April 7, 2006Date of Patent: December 8, 2009Assignee: Canon Kabushiki KaishaInventors: Kenzo Tojima, Hiroki Kitamura, Yoshiyuki Akiba, Tsutomu Takata, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Takaaki Nagaoka
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Patent number: 7619775Abstract: An image forming system includes an information processing apparatus and an image forming apparatus. The information processing apparatus performs image generation, color conversion, and extraction of image characteristics to generate compressed data. The image forming apparatus decompresses the compressed data and determines a writing address into an image data storing unit on the basis of an amount of shift to convert the density of the image data in fractional pixel units.Type: GrantFiled: December 20, 2006Date of Patent: November 17, 2009Assignee: Canon Kabushiki KaishaInventors: Hiroki Kitamura, Yoshiyuki Akiba, Tsutomu Takata, Shuichi Nakamura, Yusuke Yamamoto, Masanao Motoyama, Takeshi Akiyama, Kenzo Tojima, Takaaki Nagaoka