公开(公告)号：US20200301468A1

公开(公告)日：2020-09-24

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.

公开(公告)号：US20240103560A1

公开(公告)日：2024-03-28

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

CPC分类号： G06F1/10

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.

公开(公告)号：US20080297862A1

公开(公告)日：2008-12-04

申请号：US12113509

申请日：2008-05-01

申请人： Hajime TSUKAHARA

发明人： Hajime TSUKAHARA

IPC分类号： H04N1/60

CPC分类号： H04N1/6052 ,  G01J3/46

摘要： An adjusting unit adjusts an output level of digital data converted from image data, based on a correction coefficient for each color. A color correction unit performs a color-correction process of correcting a fluctuation of adjusted output level based on a color-correction parameter that differs from one image reading device to another. The correction coefficient is generated before a reading unit is installed in the image reading device such that the output level becomes a predetermined value when reading the original document without the color-correction process, and then adjusted without the color-correction process at a time of installing the reading unit.

摘要翻译： 调整单元基于每种颜色的校正系数调整从图像数据转换的数字数据的输出电平。 颜色校正单元基于不同于一个图像读取装置的颜色校正参数来执行校正调整的输出电平的波动的颜色校正处理。 校正系数在读取单元安装在图像读取装置中之前产生，使得在没有颜色校正处理的情况下读取原始文档时输出电平变为预定值，然后在没有颜色校正处理的情况下进行调整 安装阅读单元。

公开(公告)号：US20100142009A1

公开(公告)日：2010-06-10

申请号：US12624582

申请日：2009-11-24

申请人： Hajime TSUKAHARA ,  Tohru Kanno

发明人： Hajime TSUKAHARA ,  Tohru Kanno

IPC分类号： H04N1/04

CPC分类号： H04N1/4076 ,  H04N1/4072 ,  H04N2201/0081

摘要： When a light source is in off state, a gray level of image data on a pixel-by-pixel basis is generated as a first black level and an average of gray levels of a portion of the image data corresponding to optical black image portions of sensor chips is generated as a second black level. After that, when an image of an original is read, an average of gray levels of the black image data on a line-by-line basis is generated as a third black level. The first black level is subtracted from a gray level of the image data on a line-by-line basis (an offset correction), and a difference between the third black level and the second black level is added to a gray level of the image data after being subjected to the subtraction on a line-by-line basis.

摘要翻译： 当光源处于关闭状态时，以像素为单位的图像数据的灰度级被生成为第一黑色电平，并且对应于图像数据的一部分的光学黑色图像部分的灰度级的平均值 生成传感器芯片作为第二黑电平。 之后，当读取原稿的图像时，生成黑色图像数据在逐行基础上的灰度级的平均值作为第三黑色电平。 逐行地从图像数据的灰度级（偏移校正）中减去第一黑色电平，并且将第三黑电平和第二黑电平之间的差加到图像的灰度级 经过逐行减法后的数据。

公开(公告)号：US20080231917A1

公开(公告)日：2008-09-25

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被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。

公开(公告)号：US20120026550A1

公开(公告)日：2012-02-02

申请号：US13253708

申请日：2011-10-05

申请人： Hajime TSUKAHARA

发明人： Hajime TSUKAHARA

IPC分类号： H04N1/04 ,  G06F3/12 ,  H04N1/46

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。

公开(公告)号：US20110026085A1

公开(公告)日：2011-02-03

申请号：US12844360

申请日：2010-07-27

申请人： Hajime TSUKAHARA ,  Dalsuke Nikaku

发明人： Hajime TSUKAHARA ,  Dalsuke Nikaku

IPC分类号： H04N1/04

CPC分类号： H04N1/193 ,  H04N1/1903 ,  H04N1/1933 ,  H04N1/1934

摘要： An image reading apparatus includes: an original reading unit that includes a plurality of first and second image sensor chips each arranged at a predetermined interval in a row along a main-scanning direction, wherein the two rows are arranged so that the first chips overlap the second chips in a zigzag manner in a sub-scanning direction; an image-data generating unit that generates first image data by correcting image data with a first correction coefficient, and generates a plurality of pieces of second image data by correcting image data with a plurality of types of second correction coefficients; a comparing unit that compares image data in an overlapping portion between the first image data and each of the plurality of pieces of second image data; and an image-data selecting unit that selects a piece of second image data based on a comparison result.

摘要翻译： 图像读取装置包括：原稿读取单元，其包括多个第一和第二图像传感器芯片，每个第一和第二图像传感器芯片沿着主扫描方向以预定间隔排列成一行，其中两行布置成使得第一芯片重叠 第二芯片在副扫描方向上以锯齿形的方式; 图像数据生成单元，其通过利用第一校正系数校正图像数据来生成第一图像数据，并且通过利用多种类型的第二校正系数校正图像数据来生成多个第二图像数据; 比较单元，其比较所述第一图像数据和所述多个第二图像数据中的每一个之间的重叠部分中的图像数据; 以及图像数据选择单元，其基于比较结果选择一条第二图像数据。

公开(公告)号：US20200336615A1

公开(公告)日：2020-10-22

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： H04N1/00 ,  G06T7/13 ,  G06T7/194

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.

公开(公告)号：US20200244837A1

公开(公告)日：2020-07-30

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： H04N1/387 ,  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.

公开(公告)号：US20120057210A1

公开(公告)日：2012-03-08

申请号：US13215680

申请日：2011-08-23

申请人： Hajime TSUKAHARA ,  Makio KONDO

发明人： Hajime TSUKAHARA ,  Makio KONDO

IPC分类号： H04N1/40

CPC分类号： H04N1/00013 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00055 ,  H04N1/00087 ,  H04N1/1215 ,  H04N1/125 ,  H04N1/193 ,  H04N1/2032 ,  H04N1/401 ,  H04N2201/0081

摘要： A correction-data generating unit divides, into a matrix of row blocks in a sub scanning direction and column blocks in a main scanning direction, white data on a transfer drum read by a reading unit during a predetermined time period that is shorter than a time period in which the read point of the transfer drum is returned to a position where the reading unit has started reading the first white reference member, calculates, for each column of the matrix, a correction-data candidate value corresponding to a variation ratio of a mean of data of the row blocks in the sub-scanning direction, and determines a minimum value of the calculated correction-data candidate values as the correction data. A shading-data correcting corrects the shading data by using the generated correction data. A shading correcting unit performs shading correction on image data of a document after the correction data is generated.

摘要翻译： 校正数据生成单元将在副扫描方向上的行块和主扫描方向上的列块的矩阵分割为在比时间短的预定时间段期间由读取单元读取的转印鼓上的白色数据 将转印鼓的读取点返回到读取单元已经开始读取第一白色参考构件的位置的周期，对于矩阵的每列计算对应于a的变化比的校正数据候选值 在副扫描方向上的行块的数据的平均值，并且将所计算的校正数据候选值的最小值确定为校正数据。 阴影数据校正通过使用所生成的校正数据校正着色数据。 阴影校正单元在生成校正数据之后对文档的图像数据执行阴影校正。