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1. 发明授权

US11102375B2 Sheet reading apparatus for detecting the shadow of a conveyed sheet to determine an inclination 有权
公开(公告)号：US11102375B2
公开(公告)日：2021-08-24
申请号：US16654007
申请日：2019-10-16
申请人： Hiroshi Kubo , Kimiharu Yanagisawa , Hajime Tsukahara , Yoshiaki Nagao , Masahiro Itoh , Tatsuya Ozaki , Tomohiko Ono , Yuuki Nakada , Hiroki Shirado , Ayumu Hashimoto
发明人： Hiroshi Kubo , Kimiharu Yanagisawa , Hajime Tsukahara , Yoshiaki Nagao , Masahiro Itoh , Tatsuya Ozaki , Tomohiko Ono , Yuuki Nakada , Hiroki Shirado , Ayumu Hashimoto
IPC分类号： H04N1/00 , H04N1/387 , H04N1/10
摘要： 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 The position on the reading line is withdrawn from the sheet and adjacent to the reading guide.

2. 发明授权

US10951791B2 Image processing apparatus, method for processing image, and recording medium for noise removal and skew correction 有权
公开(公告)号：US10951791B2
公开(公告)日：2021-03-16
申请号：US16800098
申请日：2020-02-25
申请人： Ayumu Hashimoto , Hajime Tsukahara , Hiroki Shirado , Yuuki Nakada , Tomohiko Ono , Tatsuya Ozaki , Hiroshi Kubo , Kimiharu Yanagisawa , Yoshiaki Nagao , Masahiro Itoh
发明人： Ayumu Hashimoto , Hajime Tsukahara , Hiroki Shirado , Yuuki Nakada , Tomohiko Ono , Tatsuya Ozaki , Hiroshi Kubo , Kimiharu Yanagisawa , Yoshiaki Nagao , Masahiro Itoh
IPC分类号： H04N1/40 , H04N1/409 , H04N1/00 , H04N1/387
摘要： 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.

3. 发明授权

US11102364B2 Inclination detecting device, reading device, image processing apparatus, and method of detecting inclination 有权
公开(公告)号：US11102364B2
公开(公告)日：2021-08-24
申请号：US16776521
申请日：2020-01-30
申请人： Yuuki Nakada , Hajime Tsukahara , Hiroki Shirado , Ayumu Hashimoto , Tomohiko Ono , Tatsuya Ozaki , Hiroshi Kubo , Yoshiaki Nagao , Kimiharu Yanagisawa , Masahiro Itoh
发明人： Yuuki Nakada , Hajime Tsukahara , Hiroki Shirado , Ayumu Hashimoto , Tomohiko Ono , Tatsuya Ozaki , Hiroshi Kubo , Yoshiaki Nagao , Kimiharu Yanagisawa , Masahiro Itoh
IPC分类号： H04N1/04 , H04N1/00
摘要： An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.

4. 发明授权

US11115561B2 Inclination detecting device, reading device, image processing apparatus, and method of detecting inclination 有权
公开(公告)号：US11115561B2
公开(公告)日：2021-09-07
申请号：US16775287
申请日：2020-01-29
申请人： Hajime Tsukahara , Hiroki Shirado , Ayumu Hashimoto , Yuuki Nakada , Tomohiko Ono , Tatsuya Ozaki , Hiroshi Kubo , Yoshiaki Nagao , Kimiharu Yanagisawa , Masahiro Itoh
发明人： Hajime Tsukahara , Hiroki Shirado , Ayumu Hashimoto , Yuuki Nakada , Tomohiko Ono , Tatsuya Ozaki , Hiroshi Kubo , Yoshiaki Nagao , Kimiharu Yanagisawa , Masahiro Itoh
IPC分类号： H04N1/04 , H04N1/387 , H04N1/047
摘要： An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object; detect a second boundary between the object and the shadow of the object in the image information; and detect an inclination of the object in the image information from the first boundary and the second boundary detected by the processing circuitry.

5. 发明授权

US11102365B2 Edge detecting device, tilt correction device, reading device, image processing apparatus, and edge detection method 有权
公开(公告)号：US11102365B2
公开(公告)日：2021-08-24
申请号：US16841708
申请日：2020-04-07
申请人： Tomohiko Ono , Hajime Tsukahara , Hiroki Shirado , Ayumu Hashimoto , Yuuki Nakada , Tatsuya Ozaki , Hiroshi Kubo , Yoshiaki Nagao , Kimiharu Yanagisawa , Masahiro Itoh
发明人： Tomohiko Ono , Hajime Tsukahara , Hiroki Shirado , Ayumu Hashimoto , Yuuki Nakada , Tatsuya Ozaki , Hiroshi Kubo , Yoshiaki Nagao , Kimiharu Yanagisawa , Masahiro Itoh
IPC分类号： H04N1/04 , H04N1/00 , G06T7/194 , G06T7/13
摘要： An edge detecting device includes processing circuitry. The processing circuitry is configured to acquire first color information and second color information in an image including a document region and a background region outside the document region. The first color information is color information of the background region and the second color information is color information of the document region. The processing circuitry is configured to detect a boundary between the background region and the document region from a change in color information between the first color information and the second color information.

6. 发明授权

US4751473A FET amplifier circuit 失效
标题翻译： FET放大电路
公开(公告)号：US4751473A
公开(公告)日：1988-06-14
申请号：US924631
申请日：1986-10-29
申请人： Tomohiko Ono
发明人： Tomohiko Ono
IPC分类号： H03F1/52 , H03F3/16 , H02H7/20
CPC分类号： H03F1/523
摘要： An FET amplifier circuit is provided capable of minimizing the phase change of signals which pass through the circuit. Further, an FET amplifier circuit is provided capable of protecting the circuit against the effects of over-amplitude input signals with the phase change minimized.
摘要翻译：提供了一种FET放大器电路，其能够使通过电路的信号的相位变化最小化。此外，提供了一种FET放大器电路，其能够在相位变化最小化的情况下保护电路免受过振幅输入信号的影响。

7. 发明授权

US5815038A Distortion compensation circuit 失效
标题翻译：失真补偿电路
公开(公告)号：US5815038A
公开(公告)日：1998-09-29
申请号：US635710
申请日：1996-04-22
申请人： Satoshi Ogura , Kiyoharu Seino , Tomohiko Ono , Akihiro Kamikokura , Haruzo Hirose
发明人： Satoshi Ogura , Kiyoharu Seino , Tomohiko Ono , Akihiro Kamikokura , Haruzo Hirose
IPC分类号： H03F1/32 , H03F1/26
CPC分类号： H03F1/3241 , H03F2200/198
摘要： A small-sized distortion compensation circuit is disclosed. In a semi-conductor element having three terminals, its gate is used as an input terminal. One of the drain and source is used as an output terminal, and the other is grounded. This structure does not need a conventionally used circuit comprising a complicated combination of distributors, couplers and attenuators, enabling the circuit to be smaller.
摘要翻译：公开了一种小型失真补偿电路。在具有三个端子的半导体元件中，其栅极用作输入端子。其中一个漏极和源极用作输出端子，另一个接地。该结构不需要常规使用的电路，其包括分配器，耦合器和衰减器的复杂组合，使得电路能够更小。

8. 发明授权

US5477200A Variable attenuator 失效
标题翻译：可变衰减器
公开(公告)号：US5477200A
公开(公告)日：1995-12-19
申请号：US346580
申请日：1994-11-16
申请人： Tomohiko Ono
发明人： Tomohiko Ono
IPC分类号： H01P1/22 , H03H7/25
CPC分类号： H01P1/22 , H03H7/255
摘要： A current bias-type variable attenuator. Two PIN diodes are disposed in series to each other and in the forward direction on a bias current path. When a bias voltage is applied to a bias terminal, d.c. current flows in the order of a combination output port, an in-phase output port, a first PIN diode, an input port, a 900.degree.--delayed phase output port, and a second PIN diode, or in the order of the combination output port, the in-phase output port, the first PIN diode, the second PIN diode, the 900.degree.--delayed phase output port, and the input port. Since d.c. current flowing through the first PIN diode and d.c. current flowing through the second PIN diode have an equal value, an RF resistance of the first PIN diode and that of the second PIN diode are balanced.
摘要翻译：电流偏置型可变衰减器。两个PIN二极管在偏置电流路径上彼此串联并且在正向布置。当偏置端子施加偏置电压时，d。电流以组合输出端口，同相输出端口，第一PIN二极管，输入端口，900° - 延迟相位输出端口和第二PIN二极管的顺序流动，或按照组合输出的顺序端口，同相输出端口，第一PIN二极管，第二PIN二极管，900°延迟相输出端口和输入端口。自从流经第一PIN二极管的电流和直流流过第二PIN二极管的电流具有相等的值，第一PIN二极管的RF电阻和第二PIN二极管的RF电阻平衡。

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