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1. 发明授权

US07989748B2 Image reading apparatus, image forming apparatus, image inspecting apparatus and image forming system 有权
标题翻译：图像读取装置，图像形成装置，图像检查装置以及图像形成系统
公开(公告)号：US07989748B2
公开(公告)日：2011-08-02
申请号：US11484641
申请日：2006-07-12
申请人： Yoshihisa Soeda , Norio Yamada , Yoshinobu Kagami , Osamu Inage , Kenichi Satoh , Atsushi Ikeda
发明人： Yoshihisa Soeda , Norio Yamada , Yoshinobu Kagami , Osamu Inage , Kenichi Satoh , Atsushi Ikeda
IPC分类号： H01L27/00 , G01N21/88 , H04N5/217 , H04N9/64
CPC分类号： H04N1/401 , H04N1/407 , H04N1/486
摘要： A level detecting part detects image data levels for the respective output directions of the first half and the second half to be used for the linearity correction, which image data levels correspond to image data around a connection point between the first half and the second half and are obtained from respective combinations for the respective output directions of the first half and the second half. A calculating part calculates linearity correction values or correction value calculating parameters from the detected image data levels for any one of the first half and the second half; and a defect detection part detecting a defect in the image data levels thus detected around the connection point are provided.
摘要翻译：电平检测部分检测要用于线性校正的前半部分和第二半部分的各个输出方向的图像数据电平，哪个图像数据电平对应于在前半部分和下半部分之间的连接点周围的图像数据，从上半部和第二半部的各输出方向的各组合获得。计算部分根据检测到的上半部和第二半部中任一个的图像数据电平计算线性校正值或校正值计算参数; 并且提供了检测在连接点周围检测到的图像数据水平的缺陷的缺陷检测部分。

2. 发明申请

US20070013954A1 Image reading apparatus, image forming apparatus, image inspecting apparatus and image forming system 有权
标题翻译：图像读取装置，图像形成装置，图像检查装置以及图像形成系统
公开(公告)号：US20070013954A1
公开(公告)日：2007-01-18
申请号：US11484641
申请日：2006-07-12
申请人： Yoshihisa Soeda , Norio Yamada , Yoshinobu Kagami , Osamu Inage , Kenichi Satoh , Atsushi Ikeda
发明人： Yoshihisa Soeda , Norio Yamada , Yoshinobu Kagami , Osamu Inage , Kenichi Satoh , Atsushi Ikeda
IPC分类号： H04N1/409
CPC分类号： H04N1/401 , H04N1/407 , H04N1/486
摘要： A level detecting part detects image data levels for the respective output directions of the first half and the second half to be used for the linearity correction, which image data levels correspond to image data around a connection point between the first half and the second half and are obtained from respective combinations for the respective output directions of the first half and the second half. A calculating part calculates linearity correction values or correction value calculating parameters from the detected image data levels for any one of the first half and the second half; and a defect detection part detecting a defect in the image data levels thus detected around the connection point are provided.
摘要翻译：电平检测部分检测要用于线性校正的前半部分和第二半部分的各个输出方向的图像数据电平，哪个图像数据电平对应于在前半部分和下半部分之间的连接点周围的图像数据，从上半部和第二半部的各输出方向的各组合获得。计算部分根据检测到的上半部和第二半部中任一个的图像数据电平计算线性校正值或校正值计算参数; 并且提供了检测在连接点周围检测到的图像数据水平的缺陷的缺陷检测部分。

3. 发明授权

US5027117A Conversion using a variable reference based on image density 失效
标题翻译：使用基于图像密度的变量引用进行转换
公开(公告)号：US5027117A
公开(公告)日：1991-06-25
申请号：US328454
申请日：1989-03-24
申请人： Yoshiki Yoshida , Kiyoto Nagasawa , Yoshinobu Kagami
发明人： Yoshiki Yoshida , Kiyoto Nagasawa , Yoshinobu Kagami
IPC分类号： H03M1/18 , H04N1/40 , H04N1/401
CPC分类号： H03M1/182 , H04N1/40 , H04N1/401
摘要： An apparatus for converting an analog image signal to a digital image signal based on a reference voltage, includes a counter having a control terminal, for counting a first signal and outputting a counted value in digital form, a D/A converter for converting the counted value to an analog voltage signal served as the reference voltage, an A/D converter for converting the analog image signal to the digital image signal based on the reference voltage generated by the D/A converter, and a comparator for comparing in magnitude the digital image signal and a threshold level used for limiting the magnitude of the digital image signal, thereby outputting a control signal based on the results of comparison. The counter continues to count the first signal until the control signal derived from the comparator is supplied to the control terminal of the counter.
摘要翻译：一种用于基于参考电压将模拟图像信号转换为数字图像信号的装置包括具有用于对第一信号进行计数并输出数字形式的计数值的控制端的计数器，用于转换计数的D / A转换器值作为参考电压的模拟电压信号; A / D转换器，用于根据由D / A转换器产生的参考电压将模拟图像信号转换为数字图像信号;以及比较器，用于在幅度上比较数字图像信号和用于限制数字图像信号的幅度的阈值电平，从而基于比较结果输出控制信号。计数器继续计数第一信号，直到从比较器得到的控制信号提供给计数器的控制端。

4. 发明授权

US07605951B2 Image reader, image forming and reproducing apparatus, and image reading method 失效
标题翻译：图像读取器，图像形成和再现装置以及图像读取方法
公开(公告)号：US07605951B2
公开(公告)日：2009-10-20
申请号：US11051001
申请日：2005-02-07
申请人： Yoshinobu Kagami
发明人： Yoshinobu Kagami
IPC分类号： H04N1/40 , H04N1/00
CPC分类号： H04N1/401 , H04N1/4078
摘要： An image reader comprises an image sensor configured to receive a light beam reflected from an original to be read and output an analog pixel signal corresponding to a light quantity of the received light beam; a variable-gain amplifier configured to amplify the analog pixel signal to a prescribed level; an analog-to-digital converter configured to convert the amplifier analog pixel signal to digital image data; and correction means for performing correction on the A/D converted digital image data according to a prescribed criterion, using a data value corresponding to an original level of the analog pixel signal before the amplification.
摘要翻译：图像读取器包括：图像传感器，被配置为接收从要读取的原稿反射的光束，并输出与所接收的光束的光量对应的模拟像素信号; 配置为将所述模拟像素信号放大到规定水平的可变增益放大器; 配置为将放大器模拟像素信号转换为数字图像数据的模拟 - 数字转换器; 以及校正装置，用于使用与放大前的模拟像素信号的原始电平相对应的数据值，根据规定的标准对A / D转换的数字图像数据进行校正。

5. 发明申请

US20050105143A1 Document reading apparatus 失效
标题翻译：文件阅读器
公开(公告)号：US20050105143A1
公开(公告)日：2005-05-19
申请号：US10939460
申请日：2004-09-14
申请人： Yoshinobu Kagami
发明人： Yoshinobu Kagami
IPC分类号： H04N1/028 , H04N1/19 , H04N1/40 , H04N1/401 , H04N5/335 , H04N5/341 , H04N5/357 , H04N5/369 , H04N1/04
CPC分类号： H04N5/3651 , H04N1/401
摘要： A document reading apparatus includes average output value detecting circuits and random value generating adder/subtractor circuits. The average output value detecting circuits detect and hold the average output values of the pixels of the FO, FE, LO, and LE outputs, respectively.. The random value generating adder/subtractor circuits each has a function of randomly generating any value between 0 and 1, and performs an arithmetic operation on all the pixels of the LO outputs, using the following equation: Dout=ROUND(Din−0.5+RAND+a) where: ROUND represents a round-off function for rounding off a decimal point or below; RAND represents a random number that is renewed for each pixel; and a represents the difference in average value, which is 1.5 in this case.
摘要翻译：文件读取装置包括平均输出值检测电路和随机值产生加法器/减法器电路。平均输出值检测电路分别检测并保持FO，FE，LO和LE输出的像素的平均输出值。随机值产生加法器/减法器电路各自具有随机生成0之间的任何值的功能使用以下公式对LO输出的所有像素进行算术运算：<？in-line-formula description =“In-line Formulas”end =“lead”？> Dout = ROUND（Din- 0.5 + RAND + a）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中：ROUND表示用于舍入小数点或以下的舍入函数; RAND表示为每个像素更新的随机数; a代表平均值的差异，在这种情况下为1.5。

6. 发明授权

US08018631B2 Original reading device and image forming apparatus 有权
标题翻译：原始读取装置和图像形成装置
公开(公告)号：US08018631B2
公开(公告)日：2011-09-13
申请号：US12133102
申请日：2008-06-04
申请人： Yoshinobu Kagami
发明人： Yoshinobu Kagami
IPC分类号： H04N1/04 , H04N1/46
CPC分类号： H04N1/4097 , H04N1/00477 , H04N1/00909 , H04N2201/0098
摘要： A line image sensor reads an image of a reading position on a contact glass by a plurality of lines in a main-scanning direction. A replacing unit replaces, when there is a pixel whose read values of read data from a plurality of read lines in a same main scanning period are smaller than a predetermined black threshold and an adjacent pixel whose two arbitrary read values have a difference larger than a predetermined threshold near the pixel, and if the pixel remains at a same pixel position in a predetermined number of continuous main scanning periods, replaces read data of the adjacent pixel and a predetermined number of subsequent pixels with white pixel data.
摘要翻译：线图像传感器通过主扫描方向上的多条线路读取接触玻璃上的读取位置的图像。当在相同的主扫描期间存在来自多条读取线的读取数据的读取值小于预定的黑色阈值的像素和两个任意读取值的差值大于一个的相邻像素的替换单元时，在像素附近的预定阈值，并且如果像素在预定数量的连续主扫描周期中保持在相同的像素位置，则用白色像素数据替换相邻像素的读取数据和预定数量的后续像素。

7. 发明授权

US07995253B2 Image reading device and control method thereof 失效
标题翻译：图像读取装置及其控制方法
公开(公告)号：US07995253B2
公开(公告)日：2011-08-09
申请号：US12041848
申请日：2008-03-04
申请人： Yoshinobu Kagami
发明人： Yoshinobu Kagami
IPC分类号： H04N1/04 , H04N1/38 , H04N1/40
CPC分类号： H04N1/12 , H04N1/1013 , H04N1/193 , H04N2201/0081 , H04N2201/0458
摘要： An image reading device feeds a document original along a sub-scanning direction over an exposure glass. A moving unit moves to and fro in the sub-scanning direction over the exposure glass thereby causing an image reading position on the exposure glass to move. A line image sensor reads one line of an image of the document original at the image reading position in a main scanning direction, while the moving unit is moving, thereby obtaining image. A dirt determining unit determines that there is dirt on the exposure glass when a straight line appears in the main scanning direction in the image data.
摘要翻译：图像读取装置沿着副扫描方向将文件原稿馈送在曝光玻璃上。移动单元在副扫描方向上来回移动曝光玻璃，从而使曝光玻璃上的图像读取位置移动。行图像传感器在主扫描方向上在图像读取位置读取原稿的图像的一行，同时移动单元移动，从而获得图像。当图像数据中的主扫描方向上出现直线时，污物确定单元确定曝光玻璃上存在污物。

8. 发明授权

US07609422B2 Document reading apparatus that reads a document image with a CCD image sensor 失效
标题翻译：用CCD图像传感器读取文件图像的文件读取装置
公开(公告)号：US07609422B2
公开(公告)日：2009-10-27
申请号：US10939460
申请日：2004-09-14
申请人： Yoshinobu Kagami
发明人： Yoshinobu Kagami
IPC分类号： H04N1/04
CPC分类号： H04N5/3651 , H04N1/401
摘要： A document reading apparatus includes average output value detecting circuits and random value generating adder/subtractor circuits. The average output value detecting circuits detect and hold the average output values of the pixels of the FO, FE, LO, and LE outputs, respectively. The random value generating adder/subtractor circuits each has a function of randomly generating any value between 0 and 1, and performs an arithmetic operation on all the pixels of the LO outputs, using the following equation: Dout=ROUND(Din−0.5+RAND+a) where: ROUND represents a round-off function for rounding off a decimal point or below; RAND represents a random number that is renewed for each pixel; and a represents the difference in average value, which is 1.5 in this case.
摘要翻译：文件读取装置包括平均输出值检测电路和随机值产生加法器/减法器电路。平均输出值检测电路分别检测并保持FO，FE，LO和LE输出的像素的平均输出值。随机值产生加法器/减法器电路各自具有随机生成0和1之间的任何值的功能，并且使用以下等式对所有LO输出的像素进行算术运算：Dout = ROUND（Din-0.5 + RAND + a）其中：ROUND表示用于舍入小数点或以下的舍入函数; RAND表示为每个像素更新的随机数; a代表平均值的差异，在这种情况下为1.5。

9. 发明申请

US20070170258A1 Document reading device and document reading method 审中-公开
标题翻译：文件阅读装置和文件阅读方法
公开(公告)号：US20070170258A1
公开(公告)日：2007-07-26
申请号：US11655974
申请日：2007-01-22
申请人： Yoshinobu Kagami
发明人： Yoshinobu Kagami
IPC分类号： G06K7/10
CPC分类号： H04N1/047 , H04N1/00994 , H04N2201/0477
摘要： A frequency of an original clock signal is spread based on a spread spectrum width thereby generating a real clock signal, and a timing signal is generated based on the real clock signal. Noise in the timing signal is reduced in a plurality of harmonic noise reduction stages to thereby obtain a noise-reduced timing signal. An optical image obtained by scanning a document is converted into an electric signal based on the noise-reduced timing signal. The spread spectrum width to be used when spreading frequency of an original clock signal, and number of the harmonic noise reduction stages to be used when reducing noise in the timing signal are changed depending on an operation mode.
摘要翻译：原始时钟信号的频率基于扩频宽度扩展，从而产生实时时钟信号，并且基于实时时钟信号产生定时信号。在多个谐波降噪级中降低定时信号中的噪声，从而获得噪声降低的定时信号。通过扫描文档获得的光学图像被转换成基于噪声降低的定时信号的电信号。当根据操作模式改变在原始时钟信号的扩展频率时使用的扩展频谱宽度以及在降低定时信号中的噪声时要使用的谐波降噪级的数量。

10. 发明申请

US20050254102A1 Image reader, image forming and reproducing apparatus, and image reading method 失效
标题翻译：图像读取器，图像形成和再现装置以及图像读取方法
公开(公告)号：US20050254102A1
公开(公告)日：2005-11-17
申请号：US11051001
申请日：2005-02-07
申请人： Yoshinobu Kagami
发明人： Yoshinobu Kagami
IPC分类号： H04N1/04 , H04N1/401 , H04N1/407
CPC分类号： H04N1/401 , H04N1/4078
摘要： An image reader comprises an image sensor configured to receive a light beam reflected from an original to be read and output an analog pixel signal corresponding to a light quantity of the received light beam; a variable-gain amplifier configured to amplify the analog pixel signal to a prescribed level; an analog-to-digital converter configured to convert the amplifier analog pixel signal to digital image data; and correction means for performing correction on the A/D converted digital image data according to a prescribed criterion, using a data value corresponding to an original level of the analog pixel signal before the amplification.
摘要翻译：图像读取器包括：图像传感器，被配置为接收从要读取的原稿反射的光束，并输出与所接收的光束的光量对应的模拟像素信号; 配置为将所述模拟像素信号放大到规定水平的可变增益放大器; 配置为将放大器模拟像素信号转换为数字图像数据的模拟 - 数字转换器; 以及校正装置，用于使用与放大前的模拟像素信号的原始电平相对应的数据值，根据规定的标准对A / D转换的数字图像数据进行校正。

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