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公开(公告)号：US11838467B2
公开(公告)日：2023-12-05
申请号：US18103510
申请日：2023-01-31
Applicant: Kohsuke Nambara , Hiroki Shirado
Inventor： Kohsuke Nambara , Hiroki Shirado
IPC: H04N1/00
CPC classification number: H04N1/00689 , H04N1/00708 , H04N1/00737 , H04N1/00801
Abstract: A document placement detecting device includes a document table, a plate, a plurality of invisible light sources, an imaging device, and circuitry. The document table transmits light. The plate is openable and closable relative to the document table, and covers the document table in a closed state of the plate. The plurality of invisible light sources irradiate a placement area with invisible light via the document table. The placement area is an area of the document table on which a document is placed. The imaging device receives reflected light from the document, and outputs read data. The circuitry detects the placement of the document with a change in a read value of the read data output from the imaging device based on the irradiation with the invisible light.
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公开(公告)号：US10536655B2
公开(公告)日：2020-01-14
申请号：US15790101
申请日：2017-10-23
Applicant: Hiroki Shirado , Masamoto Nakazawa , Masayuki Yabuuchi
Inventor： Hiroki Shirado , Masamoto Nakazawa , Masayuki Yabuuchi
Abstract: A photoelectric conversion device having plural photoelectric conversion pixels includes an imaging unit, a position identifying unit, an interpolation determining unit, and an interpolation processing unit. The imaging unit generates image data for each of plural colors based on light received in the photoelectric conversion pixels. The position identifying unit detects in the photoelectric conversion pixels a defective pixel outputting an electrical signal at an abnormal level, and stores position information of the defective pixel. The interpolation deter mining unit determines, based on respective pixel values of peripheral pixels peripheral to the defective pixel, whether to perform an interpolation process on the defective pixel. The interpolation processing unit performs the interpolation process on the defective pixel when the interpolation determining unit determines to perform the interpolation process on the defective pixel. The interpolation process approximates the electrical signal of the defective pixel to an electrical signal at a normal level.
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3.发明授权公开(公告)号：US10091383B2
公开(公告)日：2018-10-02
申请号：US15600156
申请日：2017-05-19
Applicant: Naoki Goh , Masaki Nagase , Hiroki Shirado , Naoki Asaba , Shiho Shimosaka , Satoshi Hatanaka , Osamu Kizaki , Hiroshi Ishii , Masayuki Yabuuchi , Hideki Hashimoto , Atsushi Yoshida , Masafumi Kishi , Ayumu Hashimoto
Inventor： Naoki Goh , Masaki Nagase , Hiroki Shirado , Naoki Asaba , Shiho Shimosaka , Satoshi Hatanaka , Osamu Kizaki , Hiroshi Ishii , Masayuki Yabuuchi , Hideki Hashimoto , Atsushi Yoshida , Masafumi Kishi , Ayumu Hashimoto
IPC: H04N1/04 , G03G15/043 , G03G15/01 , H04N1/00
Abstract: An image reading apparatus includes: a plurality of light sources to emit light to a target to be read from a plurality of different irradiation positions; an illumination controller to sequentially and alternately turn on or off the plurality of light sources with a blinking cycle not perceptible to the human eye; an image capturing device to photoelectrically convert, pixel by pixel, reflected light of the light emitted to the target from the plurality of light sources to capture a plurality of read images; a memory to store one or more read images of the plurality of read images being captured; and a synthesizer to synthesize preset regions of the plurality of read images using the one or more read images stored in the memory to generate a synthesized read image representing the target, the preset region of each of the plurality of read images having an image level change caused by reflected light that is smaller than a threshold.
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公开(公告)号：US10951791B2
公开(公告)日：2021-03-16
申请号：US16800098
申请日：2020-02-25
Applicant: Ayumu Hashimoto , Hajime Tsukahara , Hiroki Shirado , Yuuki Nakada , Tomohiko Ono , Tatsuya Ozaki , Hiroshi Kubo , Kimiharu Yanagisawa , Yoshiaki Nagao , Masahiro Itoh
Inventor： Ayumu Hashimoto , Hajime Tsukahara , Hiroki Shirado , Yuuki Nakada , Tomohiko Ono , Tatsuya Ozaki , Hiroshi Kubo , Kimiharu Yanagisawa , Yoshiaki Nagao , Masahiro Itoh
Abstract: An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.
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公开(公告)号：US10182177B2
公开(公告)日：2019-01-15
申请号：US15485323
申请日：2017-04-12
Applicant: Tomohiro Sasa , Masamoto Nakazawa , Hiroki Shirado , Hideki Hashimoto
Inventor： Tomohiro Sasa , Masamoto Nakazawa , Hiroki Shirado , Hideki Hashimoto
Abstract: A signal processing device includes a signal output circuit, a controller, and a corrector. The signal output circuit outputs a signal according to a physical quantity being input. The controller controls the signal output circuit. The corrector corrects a signal to be corrected. The signal to be corrected is output from the signal output circuit. The signal output circuit selectively performs one of first operation of outputting a characteristic signal that indicates characteristics of the signal output circuit and second operation of outputting a pseudo signal that is generated spuriously, according to control of the controller. The corrector corrects the signal to be corrected based on one of the characteristic signal and the pseudo signal output from the signal output circuit.
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Patent Agency Ranking
公开(公告)号：US09094630B2
公开(公告)日：2015-07-28
申请号：US13960056
申请日：2013-08-06
Applicant: Hiroki Shirado
Inventor： Hiroki Shirado
CPC classification number: H04N1/3872 , G06K15/4095 , H04N1/00005 , H04N1/00037 , H04N1/0005 , H04N1/00082 , H04N1/00278 , H04N1/12 , H04N1/193 , H04N1/32048 , H04N1/32133 , H04N1/4433 , H04N2201/044 , H04N2201/3208 , H04N2201/3235 , H04N2201/3236 , H04N2201/3269 , H04N2201/327 , H04N2201/3271
Abstract: An image processing apparatus includes a scanning unit, a gloss detecting unit, and a glossy information processing unit. The scanning unit includes a light source and is configured to scan a document to be scanned at a first illumination position not resulting in halation caused by light of the light source output to the document, and scan the document at a second illumination position resulting in halation caused by the light output to the document. The gloss detecting unit is configured to detect a glossy portion of the document based on images scanned at the first illumination position and the second illumination position. The glossy information processing unit is configured to perform a predetermined process by using information represented by the detected glossy portion.
Abstract translation: 图像处理装置包括扫描单元，光泽检测单元和光泽信息处理单元。 扫描单元包括光源，并且被配置为在第一照明位置扫描要扫描的文档，而不会导致由输出到文档的光源的光引起的停止，并且在第二照明位置扫描文档导致暂停 由光输出引起的文件。 光泽检测单元被配置为基于在第一照明位置和第二照明位置扫描的图像来检测文档的光泽部分。 光泽信息处理单元被配置为通过使用由检测到的光泽部分表示的信息来执行预定处理。
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7.发明授权Image reading device and image forming apparatus, and method of controlling image reading device 失效图像读取装置和图像形成装置以及图像读取装置的控制方法公开(公告)号：US08503047B2
公开(公告)日：2013-08-06
申请号：US13223501
申请日：2011-09-01
Applicant: Hiroki Shirado
Inventor： Hiroki Shirado
IPC: H04N1/04
CPC classification number: H04N1/00811 , H04N1/0044 , H04N1/00816 , H04N1/1013 , H04N1/193 , H04N2201/0081 , H04N2201/0098 , H04N2201/044
Abstract: A controller controls a scanner unit of an image reading device to read a section of an original document that corresponds to an image reading area specified by a user, when a user instruction for setting the image reading area is received. The controller causes the scanner unit to move to an image reading start position in a sub-scanning direction as specified by a user instruction. When a user instruction for starting image reading is received, the controller causes the scanner unit to start reading the section of the original document from the image reading start position.
Abstract translation: 当接收到用于设置图像读取区域的用户指令时，控制器控制图像读取装置的扫描器单元，以读取与用户指定的图像读取区域相对应的原始文档的一部分。 控制器使扫描仪单元沿用户指令指定的副扫描方向移动到图像读取开始位置。 当接收到用于开始图像读取的用户指令时，控制器使扫描仪单元从图像读取开始位置开始读取原始文档的部分。
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公开(公告)号：US11277541B2
公开(公告)日：2022-03-15
申请号：US17035791
申请日：2020-09-29
Applicant: Tatsuya Ozaki , Hiroki Shirado
Inventor： Tatsuya Ozaki , Hiroki Shirado
Abstract: A signal correction device includes a correction signal generator configured to generate a correction signal serving to remove noise superimposed on an input signal; a phase adjuster configured to shift a phase of the correction signal generated by the correction signal generator; a subtractor configured to generate an output signal for output by subtracting the correction signal from the input signal; a peak and bottom detector configured to detect a peak value and a bottom value of the output signal; and a determiner configured to determine a phase-shift amount of the phase adjuster from the peak value and the bottom value of the output signal detected by the peak and bottom detector. The determiner detects uncorrected noise from the peak value and the bottom value of the output signal from the subtractor, and sets the phase-shift amount such that the uncorrected noise is reduced to a minimum.
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9.发明授权公开(公告)号：US11102375B2
公开(公告)日：2021-08-24
申请号：US16654007
申请日：2019-10-16
Applicant: Hiroshi Kubo , Kimiharu Yanagisawa , Hajime Tsukahara , Yoshiaki Nagao , Masahiro Itoh , Tatsuya Ozaki , Tomohiko Ono , Yuuki Nakada , Hiroki Shirado , Ayumu Hashimoto
Inventor： Hiroshi Kubo , Kimiharu Yanagisawa , Hajime Tsukahara , Yoshiaki Nagao , Masahiro Itoh , Tatsuya Ozaki , Tomohiko Ono , Yuuki Nakada , Hiroki Shirado , Ayumu Hashimoto
Abstract: A sheet reading apparatus includes a sheet table on which a sheet is placed, a conveyor configured to convey the sheet, a reading guide configured to guide the sheet conveyed by the conveyor, and a reading device configured to read a shadow of the sheet conveyed by the conveyor, for detection of an inclination of the sheet. The sheet reading apparatus further includes a transparent member disposed at a position on a reading line of the reading device. The position on the reading line is withdrawn from the sheet and adjacent to the reading guide.
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公开(公告)号：US10855866B2
公开(公告)日：2020-12-01
申请号：US16575457
申请日：2019-09-19
Applicant: Tomohiro Sasa , Hiroki Shirado , Tadaaki Oyama , Tatsuya Ozaki , Kohsuke Nambara
Inventor： Tomohiro Sasa , Hiroki Shirado , Tadaaki Oyama , Tatsuya Ozaki , Kohsuke Nambara
IPC: H04N1/00
Abstract: A document size detection device includes: a light source to irradiate a document with light; an imaging device to receive light reflected at the document; and circuitry to control switch on and off of the light source and movement in a sub-scanning direction of the light source, and determine a size of the document based on image data acquired by the imaging device. The circuitry is to determine a size in a main-scanning direction of the document based on: first image data acquired when the light source is switched off while the light source is at a first reading position; second image data acquired when the light source is switched on while the light source is at the first reading position; and third image data acquired when the light source is switched on while the light source is being moved from the first reading position to a second reading position.
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