Patents by Inventor Toshiyuki Kawasaki
Toshiyuki Kawasaki 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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Publication number: 20240147064Abstract: An imaging apparatus controls a focus position of an optical system by switching between a first mode where the focus position is moved alternately to first and second positions to determine an in-focus direction and a second mode where the focus position is moved in the in-focus direction. The apparatus includes an imaging unit that captures an image formed by the optical system, a detection unit that detects a vibration amount of the apparatus, a determination unit that determines, based on the vibration amount, a correction amount for reducing blurring, a correction unit that corrects the blurring by clipping a part of the image based on the correction amount, and a control unit that controls switching to the second mode if the in-focus direction is the same a predetermined number of times or more in succession. The predetermined number is changed based on the correction amount or the vibration amount.Type: ApplicationFiled: October 24, 2023Publication date: May 2, 2024Inventors: TOSHIYUKI DOBASHI, RYO KAWASAKI, NAOKI MARUYAMA
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Patent number: 11945683Abstract: A pair of regulating guides is disposed on both sides of a conveying belt in a sheet width direction Y, each having a support surface that supports an end edge in the width direction of the sheet conveyed while being nipped by the conveying belt and balls and a guide surface that faces the end edge of the sheet in the width direction. Each of the pair of regulating guides is movable to a first guide position at which the end edge of the sheet in the width direction is supported by the support surface and guided by the guide surface and to a second guide position at which the end edge of the sheet in the sheet width direction is supported by the support surface and which is retracting further away from the end edge in the sheet width direction than the guide position.Type: GrantFiled: August 25, 2021Date of Patent: April 2, 2024Assignee: CANON FINETECH NISCA INC.Inventors: Toshiyuki Iwata, Yuuki Kubota, Tsukasa Kondo, Tetsuya Kawasaki
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Publication number: 20210293942Abstract: A method of calculating distance-correction data performed by a range-finding device includes: emitting light to a calibration target at a specified distance from a range-finding device and receiving light reflected from the calibration target that has been irradiated with the emitted light, with an optical-transmission member between the range-finding device and the calibration target, to obtain an actual-measured distance from the range-finding device to the calibration target; and calculating distance-correction data using actual-measurement error data between the specified distance and the actual measured distance to the calibration target, the distance-correction data being used to correct a distance from the range-finding device to a target object measured by emitting light to the target object and receiving light reflected from the target object that has been irradiated with the emitted light, with the optical-transmission member between the range-finding device and the target object.Type: ApplicationFiled: March 18, 2021Publication date: September 23, 2021Inventors: Toshiyuki KAWASAKI, Shunsuke MURAMOTO, Yasuo KOMINAMI, Shinji NOGUCHI
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Image processing apparatus, imaging apparatus, image processing program, and image processing method
Patent number: 10063827Abstract: An image processing apparatus for performing image processing for image data. The image processing apparatus includes a signal separation unit configured to separate a color signal and a luminance signal included in the image data, and a color signal control unit configured to control chroma of the color signal used for the image processing based on a luminance value of the luminance signal.Type: GrantFiled: March 16, 2015Date of Patent: August 28, 2018Assignee: Ricoh Company, Ltd.Inventor: Toshiyuki Kawasaki -
IMAGE PROCESSING APPARATUS, IMAGING APPARATUS, IMAGE PROCESSING PROGRAM, AND IMAGE PROCESSING METHOD
Publication number: 20160373710Abstract: An image processing apparatus for performing image processing for image data. The image processing apparatus includes a signal separation unit configured to separate a color signal and a luminance signal included in the image data, and a color signal control unit configured to control chroma of the color signal used for the image processing based on a luminance value of the luminance signal.Type: ApplicationFiled: March 16, 2015Publication date: December 22, 2016Inventor: Toshiyuki KAWASAKI -
Patent number: 9019378Abstract: An imaging apparatus includes: a lens barrel which holds at least one optical element; an image sensor which converts an image of a photographic subject obtained by the optical element into an electrical signal; a circuit board on which the image sensor is mounted; and a fixing wall body which is a different body from the lens barrel, and where the lens barrel is mounted to an end part of the fixing wall body on a photographic subject side, and the circuit board is mounted to an end part of the fixing wall body on a side opposite to the photographic subject side by a bond structure by an adhesive agent.Type: GrantFiled: March 29, 2011Date of Patent: April 28, 2015Assignee: Ricoh Company, Ltd.Inventors: Mitsuru Nakajima, Toshiyuki Kawasaki, Shinobu Kanatani, Tetsuya Ogata, Kenichi Yoshimura
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Patent number: 8648904Abstract: A projector projecting an image on an object by scanning the object with a light beam includes a light source; a divergence angle converter converting the divergence angle of the light beam; a light deflector deflecting the light beam in a light beam scanning direction and a direction perpendicular to the light beam scanning direction; alight deflector drive controller controlling the light deflector to form the focused light spots at the respective pixel positions of the object on the basis of positional data for the pixels; a light amount controller controlling light amount of the light beam on the basis of luminance data for the pixels; and an image processor correcting the luminance data on the basis of previously obtained deterioration data of the projected image and outputting the corrected luminance data to the light amount controller while outputting the positional data to the light deflector drive controller.Type: GrantFiled: April 28, 2009Date of Patent: February 11, 2014Assignee: Ricoh Company, LimitedInventors: Yukiko Hamano, Ryosuke Kasahara, Toshiyuki Kawasaki
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Patent number: 8355598Abstract: A distortion of image data is corrected by performing a coordinate transformation of the image data by using { X = x + f ? ( x - x 0 , y - y 0 ) Y = y + g ? ( x - x 0 , y - y 0 ) where X and Y represent coordinates of a transformation source which is the image data after the correction of the distortion, x and y represent coordinates of a transformation destination which is the image data having the distortion, x0 and y0 are offset values in x direction and y direction, respectively, and f and g are correction functions.Type: GrantFiled: January 27, 2009Date of Patent: January 15, 2013Assignee: Ricoh Company, LimitedInventor: Toshiyuki Kawasaki
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Patent number: 8089529Abstract: An image pickup device includes an optical system; an image sensor; an AGC circuit; an image processing unit configured to perform at least an MTF correction process; and a control unit configured to control the image processing unit so as not to perform the MTF correction process in the event that the control unit determines that illuminance is low based on information which directly or indirectly indicates the illuminance.Type: GrantFiled: February 5, 2009Date of Patent: January 3, 2012Assignee: Ricoh Company, Ltd.Inventor: Toshiyuki Kawasaki
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Patent number: 8081394Abstract: An information recording apparatus has a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles. Summary information may be recorded for plural information recording parts.Type: GrantFiled: September 24, 2010Date of Patent: December 20, 2011Assignees: Ricoh Company, Ltd., Tohoku UniversityInventors: Migaku Takahashi, Masakiyo Tsunoda, Shin Saito, Tomoyuki Ogawa, Itaru Fujimura, Shigeyoshi Misawa, Toshiyuki Kawasaki
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Patent number: 8035068Abstract: A photoelectric conversion element includes a plurality of light receiving portions. A color filter is provided on a light receiving surface of the photoelectric conversion element with filters for red, green, and blue arranged corresponding to the light receiving portions, such that R, G, and B pixels including the light receiving portions and the filters are arranged in a two-dimensional array. A transfer unit transfers a light in a wavelength range other than lights of green and blue incident on the G pixel and a light in a wavelength range other than lights of blue and green incident on the B pixel to a neighboring R pixel.Type: GrantFiled: June 8, 2009Date of Patent: October 11, 2011Assignee: Ricoh Company, LimitedInventors: Tomoko Ishigaki, Ryosuke Kasahara, Toshiyuki Kawasaki, Ippei Matsumoto, Masahiro Fujimoto
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Publication number: 20110242321Abstract: An imaging apparatus includes: a lens barrel which holds at least one optical element; an image sensor which converts an image of a photographic subject obtained by the optical element into an electrical signal; a circuit board on which the image sensor is mounted; and a fixing wall body which is a different body from the lens barrel, and where the lens barrel is mounted to an end part of the fixing wall body on a photographic subject side, and the circuit board is mounted to an end part of the fixing wall body on a side opposite to the photographic subject side by a bond structure by an adhesive agent.Type: ApplicationFiled: March 29, 2011Publication date: October 6, 2011Inventors: Mitsuru NAKAJIMA, Toshiyuki Kawasaki, Shinobu Kanatani, Tetsuya Ogata, Kenichi Yoshimura
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Patent number: 7967445Abstract: An image projecting apparatus enables the formation of a projected image faithful to original image information by reducing degradation in the projected image due to decrease in imaging performance of a projection optical system. Image information is processed by an image processing device, which includes a first and a second image processor. A light modulating device modulates a flux of light emitted by an illumination optical system based on the processed image information. The modulated flux of light is projected on a screen by a projection optical system. If the image information processed by the first image processor in a pixel region is not within a representable modulation range of the light modulating device, the image information is processed by the second image processor.Type: GrantFiled: November 13, 2007Date of Patent: June 28, 2011Assignee: Ricoh Company, Ltd.Inventors: Yukiko Hamano, Ryosuke Kasahara, Toshiyuki Kawasaki
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Publication number: 20110007582Abstract: An information recording apparatus comprises a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles.Type: ApplicationFiled: September 24, 2010Publication date: January 13, 2011Inventors: Migaku Takahashi, Masakiyo Tsunoda, Shin Saito, Tomoyuki Ogawa, Itaru Fujimura, Shigeyoshi Misawa, Toshiyuki Kawasaki
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Patent number: 7826174Abstract: An information recording apparatus comprises a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles.Type: GrantFiled: March 30, 2007Date of Patent: November 2, 2010Assignees: Ricoh Company, Ltd., Tohoku UniversityInventors: Migaku Takahashi, Masakiyo Tsunoda, Shin Saito, Tomoyuki Ogawa, Itaru Fujimura, Shigeyoshi Misawa, Toshiyuki Kawasaki
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Patent number: 7773305Abstract: A wide-angle lens is disclosed that includes a front lens group and a rear lens group that are arranged in order from an object side to an image side with an aperture being arranged between the front lens group and the rear lens group. The front lens group includes at least two lenses arranged toward the object side that have negative powers, and at least one lens arranged toward the image side that has a positive power. The rear lens group includes at least one lens having a positive power. One of the lenses of the front lens group arranged second in order from the object side has a lens face that is arranged into an aspheric surface. The front lens group, the aperture, and the rear lens group make up an image forming system having an angle of view greater than 180 degrees.Type: GrantFiled: March 25, 2008Date of Patent: August 10, 2010Assignee: Ricoh Company, Ltd.Inventors: Hayato Yoshida, Yasushi Takahashi, Naoki Moniwa, Toshiyuki Kawasaki, Ryosuke Kasahara, Issei Abe, Yukiko Hamano
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Publication number: 20100019129Abstract: A photoelectric conversion element includes a plurality of light receiving portions. A color filter is provided on a light receiving surface of the photoelectric conversion element with filters for red, green, and blue arranged corresponding to the light receiving portions, such that R, G, and B pixels including the light receiving portions and the filters are arranged in a two-dimensional array. A transfer unit transfers a light in a wavelength range other than lights of green and blue incident on the G pixel and a light in a wavelength range other than lights of blue and green incident on the B pixel to a neighboring R pixel.Type: ApplicationFiled: June 8, 2009Publication date: January 28, 2010Inventors: Tomoko Ishigaki, Ryosuke Kasahara, Toshiyuki Kawasaki, Ippei Matsumoto, Masahiro Fujimoto
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Publication number: 20090289950Abstract: A projector projecting an image on an object by scanning the object with a light beam includes a light source; a divergence angle converter converting the divergence angle of the light beam; a light deflector deflecting the light beam in a light beam scanning direction and a direction perpendicular to the light beam scanning direction; alight deflector drive controller controlling the light deflector to form the focused light spots at the respective pixel positions of the object on the basis of positional data for the pixels; a light amount controller controlling light amount of the light beam on the basis of luminance data for the pixels; and an image processor correcting the luminance data on the basis of previously obtained deterioration data of the projected image and outputting the corrected luminance data to the light amount controller while outputting the positional data to the light deflector drive controller.Type: ApplicationFiled: April 28, 2009Publication date: November 26, 2009Inventors: Yukiko HAMANO, Ryosuke KASAHARA, Toshiyuki KAWASAKI
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Publication number: 20090208136Abstract: A distortion of image data is corrected by performing a coordinate transformation of the image data by using { X = x + f ? ( x - x 0 , y - y 0 ) Y = y + g ? ( x - x 0 , y - y 0 ) where X and Y represent coordinates of a transformation source which is the image data after the correction of the distortion, x and y represent coordinates of a transformation destination which is the image data having the distortion, x0 and y0 are offset values in x direction and y direction, respectively, and f and g are correction functions.Type: ApplicationFiled: January 27, 2009Publication date: August 20, 2009Inventor: Toshiyuki Kawasaki
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Publication number: 20090207276Abstract: An image pickup device includes an optical system; an image sensor; an AGC circuit; an image processing unit configured to perform at least an MTF correction process; and a control unit configured to control the image processing unit so as not to perform the MTF correction process in the event that the control unit determines that illuminance is low based on information which directly or indirectly indicates the illuminance.Type: ApplicationFiled: February 5, 2009Publication date: August 20, 2009Inventor: Toshiyuki Kawasaki