Patents by Inventor Toshikazu Murao
Toshikazu Murao 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: 10380432Abstract: An on-board camera apparatus includes a camera module, a control circuit board, a housing, a bracket, and a hood. The housing houses the camera module and the control circuit board. The bracket fixes the housing to a front windshield of the own vehicle. The hood is arranged so as to cover the camera module. The camera module captures an image of an area ahead of an own vehicle. As captured images, the camera module generates a plurality of linear images in which a relationship between luminance and an output pixel value is fixed. Based on the linear images, the camera module further generates high dynamic range images in which a relationship between luminance and an output pixel value differs depending on a luminance region, under a predetermined imaging mode. The control circuit board enables a plurality of types of driving-related processes based on the captured images to be performed.Type: GrantFiled: May 19, 2016Date of Patent: August 13, 2019Assignee: DENSO CORPORATIONInventor: Toshikazu Murao
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Patent number: 10375316Abstract: An imaging device performs imaging using an imaging element. The imaging device is provided with an imaging unit, a control unit and a synthesis unit. The imaging unit performs exposure with a predetermined exposure time, thereby performing image capture. The control unit successively performs an imaging process N-times. In each imaging process, a plurality of images are captured with different exposure times. The synthesis unit generates, using HDR rendering, a plurality of images acquired by the plurality of image captures. The control unit performs one of the plurality of image captures such that the exposure is completed at a corresponding synchronous timing, and performs a subsequent other image capture such that exposure is started at the synchronous timing.Type: GrantFiled: October 2, 2017Date of Patent: August 6, 2019Assignee: DENSO CORPORATIONInventors: Kazuhiko Kobayashi, Toshikazu Murao, Masato Nishikawa
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Publication number: 20190166307Abstract: A camera system includes: a first imaging element; a second imaging element different from the first imaging element; an oscillator for supplying a clock signal to the first imaging element and the second imaging element; and a controller that controls an operation of the first imaging element and an operation of the second imaging element, and acquires image signals outputted by the first imaging element and the second imaging element. The controller synchronizes and outputs image data of a first region, which is a part of an effective pixel region of the first imaging element, and image data of a second region, which is a part or a whole of an effective pixel region of the second imaging element.Type: ApplicationFiled: November 27, 2018Publication date: May 30, 2019Inventors: Toshikazu MURAO, Nobuhisa SHIMIZU
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Patent number: 10228699Abstract: In an image generation apparatus, an image of a periphery of an own vehicle is captured using an imaging operation of a camera mounted in the own vehicle in a first state that is suitable for capturing an image for recognizing information illustrated on a display board, at a predetermined first timing, and a first captured image is generated from the image captured in the first state. An image of the periphery of the own vehicle is captured using an imaging operation of the camera in a second state that is suitable for capturing an image for recognizing information displayed by light emitted from an electronic display apparatus, at a predetermined second timing, and a second captured image is generated from the image captured in the second state. A process using the first captured image and the second captured image is performed.Type: GrantFiled: May 19, 2016Date of Patent: March 12, 2019Assignee: DENSO CORPORATIONInventor: Toshikazu Murao
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Publication number: 20180319351Abstract: An in-vehicle camera is provide which has a case and a lens, and which is attached in a vehicle interior so that the lens is exposed at a top face of the case and the top face is opposed to a windshield or another window. The top face has an angular shape bent at a ridge line passing through the top face. The lens is positioned in the vicinity of the ridge line. The in-vehicle camera includes a hood attached to a front portion of the case, the front portion being positioned at a front side of the case with respect to the lens.Type: ApplicationFiled: July 13, 2018Publication date: November 8, 2018Inventors: Syo OKUDA, Toshikazu MURAO, Kentarou SHIOTA, Naoki SUGIYAMA, Takayuki KIMURA
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Patent number: 10046716Abstract: An in-vehicle camera is provide which has a case and a lens, and which is attached in a vehicle interior so that the lens is exposed at a top face of the case and the top face is opposed to a windshield or another window. The top face has an angular shape bent at a ridge line passing through the top face. The lens is positioned in the vicinity of the ridge line. The in-vehicle camera includes a hood attached to a front portion of the case, the front portion being positioned at a front side of the case with respect to the lens.Type: GrantFiled: October 22, 2015Date of Patent: August 14, 2018Assignee: DENSO CORPORATIONInventors: Syo Okuda, Toshikazu Murao, Kentarou Shiota, Naoki Sugiyama, Takayuki Kimura
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Patent number: 9967438Abstract: An imaging means acquires an imaged image in a predetermined imaging range for each predetermined frame rate. An image processing means performs image processing on image data of the image captured by the imaging means. A first setting means (S420) sets the imaging means to image a predetermined first range in the imaging range with a predetermined first frame rate. A second setting means (S430) sets the imaging means to image a second range, which is a part of the imaging range imaged by the imaging means and is narrower than the first range, with a second frame rate higher than the first frame rate. A determination means (S420) selects one of the first setting means and the second setting means depending on process contents that the image processing performs.Type: GrantFiled: February 18, 2014Date of Patent: May 8, 2018Assignee: DENSO CORPORATIONInventors: Takayuki Kimura, Toshikazu Murao
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Publication number: 20180097984Abstract: An imaging device performs imaging using an imaging element. The imaging device is provided with an imaging unit, a control unit and a synthesis unit. The imaging unit performs exposure with a predetermined exposure time, thereby performing image capture. The control unit successively performs an imaging process N-times. In each imaging process, a plurality of images are captured with different exposure times. The synthesis unit generates, using HDR rendering, a plurality of images acquired by the plurality of image captures. The control unit performs one of the plurality of image captures such that the exposure is completed at a corresponding synchronous timing, and performs a subsequent other image capture such that exposure is started at the synchronous timing.Type: ApplicationFiled: October 2, 2017Publication date: April 5, 2018Inventors: Kazuhiko Kobayashi, Toshikazu Murao, Masato Nishikawa
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Publication number: 20180098040Abstract: An image sensor includes a plurality of optical filters, a plurality of transmissive members, an imaging section, and a signal processing section. The optical filters transmit visible rays having a wavelength enabling visual recognition of a primary color, and the transmissive members transmit infrared rays. A plurality of imaging elements of the imaging section are constituted by a plurality of groups. Each of the imaging elements includes optical filters or transmissive members. The signal processing section determines the luminance of each pixel of a produced image, based on measurement values measured by the imaging elements of a group corresponding to the pixel. At least one imaging element of each group is provided with a transmissive member, and the remaining one or more imaging elements are provided with the optical filters having no color or a primary color allocated to the group.Type: ApplicationFiled: September 27, 2017Publication date: April 5, 2018Inventors: Toshikazu Murao, Kazuyoshi Akiba
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Publication number: 20170305361Abstract: An in-vehicle camera is provide which has a case and a lens, and which is attached in a vehicle interior so that the lens is exposed at a top face of the case and the top face is opposed to a windshield or another window. The top face has an angular shape bent at a ridge line passing through the top face. The lens is positioned in the vicinity of the ridge line. The in-vehicle camera includes a hood attached to a front portion of the case, the front portion being positioned at a front side of the case with respect to the lens.Type: ApplicationFiled: July 7, 2017Publication date: October 26, 2017Inventors: Syo OKUDA, Toshikazu MURAO, Kentarou SHIOTA, Naoki SUGIYAMA, Takayuki KIMURA
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Patent number: 9800881Abstract: In imaging processing, image data outputted from an imaging device is acquired as a data string formed of a first display value expressed by a first number of gradations obtained through conversion of a luminance value in accordance with preset nonlinear conversion characteristics. The first display value is compressed in accordance with preset compression characteristics, and outputted as a second display value expressed by a second number of gradations smaller than the first number of gradations. A recognition target is detected from an image expressed by compressed data that is a data string formed of the second display value.Type: GrantFiled: April 30, 2014Date of Patent: October 24, 2017Assignee: DENSO CORPORATIONInventors: Toshikazu Murao, Takayuki Kimura
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Patent number: 9690997Abstract: A recognition object detecting apparatus is provided which includes an imaging unit which generates image data representing a taken image, and a detection unit which detects a recognition object from the image represented by the image data. The imaging unit has a characteristic in which a relation between luminance and output pixel values varies depending on a luminance range. The detection unit binarizes the output pixel values of the image represented by the image data by using a plurality of threshold values to generate a plurality of binary images, and detects the recognition object based on the plurality of binary images.Type: GrantFiled: January 9, 2015Date of Patent: June 27, 2017Assignee: DENSO CORPORATIONInventors: Toshikazu Murao, Takayuki Kimura, Kentarou Shiota, Noriaki Shirai, Naoki Sugiyama
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Patent number: 9626570Abstract: A vehicle control system includes a light-receiving section which has a plurality of filters having different pass bands, and a plurality of light-receiving elements, each of which receives incident light via any one of the filters; an image data generation section which, when receiving general image data which is an output of the light-receiving section, extracts outputs of the light-receiving elements correlated to the filters to generate discrete image data, which is image data for each of the filters; an image data processing section which detects at least one object, based on the discrete image data generated by the image data generation section or composite image data generated by combining the discrete image data; and a vehicle control section which performs vehicle control, according to the object detected by the image data processing section.Type: GrantFiled: September 26, 2014Date of Patent: April 18, 2017Assignee: DENSO CORPORATIONInventors: Toshikazu Murao, Kentarou Shiota, Naoki Sugiyama, Takayuki Kimura
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Publication number: 20160344916Abstract: In an image generation apparatus, an image of a periphery of an own vehicle is captured using an imaging operation of a camera mounted in the own vehicle in a first state that is suitable for capturing an image for recognizing information illustrated on a display board, at a predetermined first timing, and a first captured image is generated from the image captured in the first state. An image of the periphery of the own vehicle is captured using an imaging operation of the camera in a second state that is suitable for capturing an image for recognizing information displayed by light emitted from an electronic display apparatus, at a predetermined second timing, and a second captured image is generated from the image captured in the second state. A process using the first captured image and the second captured image is performed.Type: ApplicationFiled: May 19, 2016Publication date: November 24, 2016Inventor: Toshikazu Murao
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Publication number: 20160344977Abstract: An on-board camera apparatus includes a camera module, a control circuit board, a housing, a bracket, and a hood. The housing houses the camera module and the control circuit board. The bracket fixes the housing to a front windshield of the own vehicle. The hood is arranged so as to cover the camera module. The camera module captures an image of an area ahead of an own vehicle. As captured images, the camera module generates a plurality of linear images in which a relationship between luminance and an output pixel value is fixed. Based on the linear images, the camera module further generates high dynamic range images in which a relationship between luminance and an output pixel value differs depending on a luminance region, under a predetermined imaging mode. The control circuit board enables a plurality of types of driving-related processes based on the captured images to be performed.Type: ApplicationFiled: May 19, 2016Publication date: November 24, 2016Inventor: Toshikazu Murao
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Publication number: 20160105679Abstract: In imaging processing, image data outputted from an imaging device is acquired as a data string formed of a first display value expressed by a first number of gradations obtained through conversion of a luminance value in accordance with preset nonlinear conversion characteristics. The first display value is compressed in accordance with preset compression characteristics, and outputted as a second display value expressed by a second number of gradations smaller than the first number of gradations. A recognition target is detected from an image expressed by compressed data that is a data string formed of the second display value.Type: ApplicationFiled: April 30, 2014Publication date: April 14, 2016Applicant: DENSO CORPORATIONInventors: Toshikazu Murao, Takayuki Kimura
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Patent number: 9307155Abstract: The method is for determining an exposure control value for controlling exposure of a camera mounted on a vehicle to take images in the vicinity of the vehicle. The method includes a detection step of detecting a target from a taken image which the camera has taken in a state where the target is disposed within a image-taking area of the camera, a measurement step of measuring brightness of the target in the taken image, and a calculation step of calculating the exposure control value to such a value that the brightness of the target becomes equal to a target brightness appropriate for recognizing the target.Type: GrantFiled: December 21, 2011Date of Patent: April 5, 2016Assignee: DENSO CORPORATIONInventor: Toshikazu Murao
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Patent number: 9294681Abstract: The exposure control apparatus is for performing exposure control for a camera mounted on a vehicle in accordance with brightness of a recognition area set in an image ahead of the vehicle taken by the camera. The exposure control apparatus includes a measuring means for measuring brightness of a photometric area showing a landscape more distant from the vehicle than a landscape shown by the recognition area in each of images successively taken by the camera, a detection means for detecting brightness variation with time of the photometric area based on measurement results by the measuring means for images taken by the camera at different times, and a control means configured to predict a timing at which the brightness of the recognition area changes based on the brightness variation with time of the photometric area, and perform exposure control of the camera at the predicted timing.Type: GrantFiled: December 19, 2011Date of Patent: March 22, 2016Assignee: DENSO CORPORATIONInventors: Toshikazu Murao, Takayuki Kimura
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Publication number: 20160050342Abstract: An imaging means acquires an imaged image in a predetermined imaging range for each predetermined frame rate. An image processing means performs image processing on image data of the image captured by the imaging means. A first setting means (S420) sets the imaging means to image a predetermined first range in the imaging range with a predetermined first frame rate. A second setting means (S430) sets the imaging means to image a second range, which is a part of the imaging range imaged by the imaging means and is narrower than the first range, with a second frame rate higher than the first frame rate. A determination means (S420) selects one of the first setting means and the second setting means depending on process contents that the image processing performs.Type: ApplicationFiled: February 18, 2014Publication date: February 18, 2016Inventors: Takayuki Kimura, Toshikazu Murao
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Publication number: 20160039358Abstract: An in-vehicle camera is provide which has a case and a lens, and which is attached in a vehicle interior so that the lens is exposed at a top face of the case and the top face is opposed to a windshield or another window. The top face has an angular shape bent at a ridge line passing through the top face. The lens is positioned in the vicinity of the ridge line. The in-vehicle camera includes a hood attached to a front portion of the case, the front portion being positioned at a front side of the case with respect to the lens.Type: ApplicationFiled: October 22, 2015Publication date: February 11, 2016Inventors: Syo Okuda, Toshikazu Murao, Kentarou Shiota, Naoki Sugiyama, Takayuki Kimura