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1. 发明授权

US11429141B2 Data processing device, image reading apparatus, image forming apparatus, and data processing method 有权
公开(公告)号：US11429141B2
公开(公告)日：2022-08-30
申请号：US16820728
申请日：2020-03-17
申请人： Tomohiro Sasa , Hajime Tsukahara
发明人： Tomohiro Sasa , Hajime Tsukahara
IPC分类号： G06F1/14 , G06F1/10
摘要： A data processing device includes a data processing circuit and a data processing control circuit. The data processing circuit is configured to perform data processing on processing target data by use of an external clock, the processing target data being included in a data signal received from an outside, the external clock being included in the data signal. The data processing control circuit is configured to detect a state of the external clock and control execution of the data processing on the processing target data in accordance with the state of the external clock. The data processing control circuit is configured to operate with a clock having a lower impedance than an impedance of the external clock, and discard the processing target data received during a period in which an abnormality of the external clock is detected, in a case of detecting the abnormality of the external clock.

2. 发明授权

US12066854B2 Data processing device, image reading apparatus, image forming apparatus, and method for processing data 有权
公开(公告)号：US12066854B2
公开(公告)日：2024-08-20
申请号：US17766254
申请日：2020-11-20
申请人： Hajime Tsukahara , Tomohiro Sasa
发明人： Hajime Tsukahara , Tomohiro Sasa
IPC分类号： G06F1/10 , G06F1/12 , G06F11/07
CPC分类号： G06F1/10 , G06F1/12 , G06F11/0733 , G06F11/0751 , G06F11/0772 , G06F11/0793
摘要： A data processing device comprises: a data receiver to receive data to be processed, an external clock, and a unit control signal determining a processing unit for the data to be processed from an outside, the data receiver including a PLL circuit to receive the external clock; a clock abnormality detector to operate based on a clock of a system different from a system of the external clock and detect abnormality of the external clock based on a lock signal output from the PLL circuit; and a data processing controller to control processing of the data. When abnormality of the external clock is detected, the data processing controller stops taking in the data to be processed, and when the external clock becomes normal again, take in the unit control signal and resume taking in the data to be processed.

3. 发明授权

US08335023B2 Image reading apparatus and image forming apparatus 有权
标题翻译：图像读取装置和图像形成装置
公开(公告)号：US08335023B2
公开(公告)日：2012-12-18
申请号：US12046794
申请日：2008-03-12
申请人： Hajime Tsukahara
发明人： Hajime Tsukahara
IPC分类号： H04N1/04
CPC分类号： H04N1/00002 , H04N1/00013 , H04N1/00034 , H04N1/0005 , H04N1/00063 , H04N1/00068 , H04N1/00925 , H04N1/02835 , H04N1/1013 , H04N1/193 , H04N2201/0081
摘要： An image reading apparatus has a plurality of emitters that emit light onto a manuscript surface in a light quantity that is the synthesized light quantity of light emitted from the plurality of emitters. In the image reading apparatus, determination on the abnormality of a reference white data level value at the time of turning on a power supply is carried out through comparison between the reference white data level value with a predetermined absolute value. A normal reference white data level value is stored in a first storing unit, while a comparison white data level value detected at the time of manuscript reading operation is stored in a second storing unit. Then, a differential between the level values stored in the first and second storing units is calculated, and an abnormality determining unit compares the differential with a predetermined threshold to detect the abnormality of an emitter.
摘要翻译：图像读取装置具有以从多个发射体发出的光的合成光量的光量向原稿面发光的多个发光体。在图像读取装置中，通过比较具有预定绝对值的参考白色数据电平值来执行在接通电源时对参考白色数据电平值的异常的确定。正常参考白色数据电平值存储在第一存储单元中，而在原稿读取操作时检测到的比较白色数据电平值存储在第二存储单元中。然后，计算存储在第一和第二存储单元中的电平值之间的差分，并且异常确定单元将差分与预定阈值进行比较以检测发射器的异常。

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. 发明申请

US20080024842A1 IMAGE READING SIGNAL PROCESSING IC, IMAGE READING APPARATUS, AND IMAGE FORMING APPARATUS 有权
标题翻译：图像读取信号处理IC，图像读取装置和图像形成装置
公开(公告)号：US20080024842A1
公开(公告)日：2008-01-31
申请号：US11776132
申请日：2007-07-11
申请人： Hajime Tsukahara , Tohru Kanno
发明人： Hajime Tsukahara , Tohru Kanno
IPC分类号： H04N1/46
CPC分类号： H04N1/00002 , H04N1/00013 , H04N1/00018 , H04N1/00031 , H04N1/00045 , H04N1/00063 , H04N1/00087 , H04N1/193
摘要： An image reading signal processing IC is disclosed which includes three circuits to which corresponding analog image signals of three primary colors of a document read by a CCD are input. In each of the three circuits, a test pattern generating circuit is disposed between an ADC and an LVDS processing circuit. Further, the image reading signal processing IC includes an operational mode determination information input unit formed of a TG & I/F and an OR gate. An operational mode of the test pattern generating circuit is switched between a normal mode for outputting digital image data output from the ADC and a test pattern output mode for outputting digital data of a test pattern generated by the test pattern generating circuit based on operational mode determination information input from the operational mode determination information input unit.
摘要翻译：公开了一种图像读取信号处理IC，其包括三个电路，由CCD输入的文件的三原色对应的模拟图像信号被输入。在三个电路中的每一个中，测试图形发生电路设置在ADC和LVDS处理电路之间。此外，图像读取信号处理IC包括由TG＆I / F和OR门形成的操作模式确定信息输入单元。测试图形生成电路的操作模式在用于输出从ADC输出的数字图像数据的正常模式和用于输出由测试图形生成电路基于操作模式确定产生的测试图案的数字数据的测试图案输出模式之间切换从操作模式确定信息输入单元输入的信息。

7. 发明申请

US20070216915A1 BLACK-LEVEL FEEDBACK DEVICE, IMAGE READING DEVICE, AND BLACK-LEVEL FEEDBACK CONTROL METHOD 有权
标题翻译：黑色反馈装置，图像读取装置和黑色反馈控制方法
公开(公告)号：US20070216915A1
公开(公告)日：2007-09-20
申请号：US11681432
申请日：2007-03-02
申请人： Hajime Tsukahara
发明人： Hajime Tsukahara
IPC分类号： G06F15/00
CPC分类号： H04N1/407 , H04N1/1013 , H04N2201/044
摘要： A first set-value calculating unit calculates a first set value of a black-level feedback based on a reflection amount that increases a speed of tracking to a black-level target value in a black-level feedback control. A second set-value calculating unit calculates a second set value of a black-level feedback based on a reflection amount that slows down a tracking to a black-level target value as compared to the speed of tracking of the first set-value calculating unit. A selecting unit selects and outputs any one of the first set value and the second set value and outputs selected value as a set value. A controlling unit controls selection of any one of the first set value and the second set value by the selecting unit based on the black differential value and a gain of the image data.
摘要翻译：第一设定值计算单元基于在黑电平反馈控制中将跟踪速度提高到黑电平目标值的反射量来计算黑电平反馈的第一设定值。第二设定值计算单元，与第一设定值计算单元的跟踪速度相比，基于将跟踪减慢到黑电平目标值的反射量，计算黑电平反馈的第二设定值。选择单元选择并输出第一设定值和第二设定值中的任一个，并输出所选择的值作为设定值。控制单元通过选择单元基于黑色微分值和图像数据的增益来控制对第一设定值和第二设定值中的任何一个的选择。

8. 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.

9. 发明授权

US08514452B2 Image scanning apparatus and image forming apparatus 有权
标题翻译：图像扫描装置和图像形成装置
公开(公告)号：US08514452B2
公开(公告)日：2013-08-20
申请号：US12926212
申请日：2010-11-02
申请人： Hajime Tsukahara
发明人： Hajime Tsukahara
IPC分类号： H04N1/40
CPC分类号： H04N1/407 , H04N1/12 , H04N1/193 , H04N1/2032 , H04N1/4076 , H04N2201/044
摘要： An image scanning apparatus includes an image scanning unit that reads an image from an original sheet by scanning an image-formed surface of the original sheet with light in a main-scanning direction and converting light reflected from the image-formed surface into electricity using a photoelectric conversion element; a shading correction unit that performs shading correction on an image signal created by reading the image from the original sheet; a white member that faces a scanning surface of the image scanning unit; and a reference-white-data creating unit that creates reference white data for the shading correction by scanning a surface of the white member using the image scanning unit; and an interval controlling unit that decreases an interval between a scanning surface of the image scanning unit and a surface of the white member when the reference-white-data creating unit creates the referential white data.
摘要翻译：一种图像扫描装置，包括：图像扫描单元，其通过用主扫描方向的光扫描原稿的图像形成表面，从原稿中读取图像，并且将从图像形成的表面反射的光转换成电，光电转换元件; 阴影校正单元，对从原稿读取图像而产生的图像信号进行阴影校正; 面向图像扫描单元的扫描表面的白色构件; 基准白数据生成部，利用图像扫描部扫描白色部件的表面，生成用于阴影校正的基准白色数据; 以及间隔控制单元，当参考白色数据创建单元创建参考白色数据时，减小图像扫描单元的扫描表面与白色构件的表面之间的间隔。

10. 发明授权

US08395830B2 Image reading signal processing IC, image reading apparatus, and image forming apparatus 有权
标题翻译：图像读取信号处理IC，图像读取装置和图像形成装置
公开(公告)号：US08395830B2
公开(公告)日：2013-03-12
申请号：US11776132
申请日：2007-07-11
申请人： Hajime Tsukahara , Tohru Kanno
发明人： Hajime Tsukahara , Tohru Kanno
IPC分类号： H04N1/46
CPC分类号： H04N1/00002 , H04N1/00013 , H04N1/00018 , H04N1/00031 , H04N1/00045 , H04N1/00063 , H04N1/00087 , H04N1/193
摘要： An image reading signal processing IC includes three circuits which independently process input analog image signals of three primary colors. Each circuit includes an ADC which converts amplified analog image signals into digital image data. Each circuit also includes an LVDS processing circuit which outputs the digital image data in a low voltage differential signaling level. Each circuit further includes a test pattern generating circuit connected between the ADC and the LVDS processing circuit for generating digital data of a test pattern. The image reading signal processing IC additionally includes an operational mode determination information input unit which inputs operational mode determination information to the test pattern generating circuit. Further, the image reading signal processing IC includes a switching unit which switches one of the digital data of the test patterns to any one or more of main scanning direction gradation pattern data and sub scanning direction gradation pattern data.
摘要翻译：图像读取信号处理IC包括独立地处理三原色输入模拟图像信号的三个电路。每个电路包括将放大的模拟图像信号转换成数字图像数据的ADC。每个电路还包括一个LVDS处理电路，它以低电压差分信号电平输出数字图像数据。每个电路还包括连接在ADC和LVDS处理电路之间以产生测试图案的数字数据的测试图形发生电路。图像读取信号处理IC另外包括向测试图案生成电路输入操作模式确定信息的操作模式确定信息输入单元。此外，图像读取信号处理IC包括将测试图案的数字数据中的一个切换到主扫描方向灰度图案数据和副扫描方向灰度图案数据中的一个或多个的切换单元。

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