公开(公告)号：US5585620A

公开(公告)日：1996-12-17

申请号：US353292

申请日：1994-12-05

申请人： Yasunori Nakamura ,  Souichi Ueta

发明人： Yasunori Nakamura ,  Souichi Ueta

IPC分类号： G06T3/40 ,  H04N1/04 ,  H04N1/393 ,  H04N1/40 ,  H01J40/14

CPC分类号： H04N1/0411 ,  G06T3/40 ,  H04N1/0402 ,  H04N1/0414 ,  H04N1/0429 ,  H04N1/3935 ,  H04N1/40056

摘要： An image reading device (image scanner) includes a resolution changing device that changes a resolution of the image signals output by a photoelectric sensor device by changing a primary scanning direction aperture size, a secondary scanning direction aperture size, or both, of the photoelectric sensor device. In order to change a resolution in the secondary scanning direction, the secondary scanning direction aperture size is changed, for example, by a control device that controls a drive velocity of a drive device that drives the photoelectric sensor device in the secondary scanning direction relative to an original document. Alternatively, the control device can control a duration of an integral time of the photoelectric sensor device during which the photoelectric sensor elements of the photoelectric sensor device collect light from the original document in order to vary the secondary scanning direction aperture size. In order to change a resolution in the primary scanning direction, the primary scanning direction aperture size is changed, for example, by an averaging process circuit that averages the signals output from a plurality of adjacent photoelectric sensor elements. The averaging process circuit changes a resolution of the image by a factor of m by averaging the signals output by m adjacent photoelectric sensor elements, wherein m is an integer.

摘要翻译： 一种图像读取装置（图像扫描器）包括分辨率改变装置，其通过改变光电传感器的主扫描方向孔径尺寸，次扫描方向孔径尺寸或二者扫描方向孔径尺寸或二者来改变由光电传感器装置输出的图像信号的分辨率 设备。 为了改变副扫描方向上的分辨率，例如通过控制驱动光电传感器装置的驱动装置的辅助扫描方向孔径尺寸在副扫描方向上相对于 原始文件。 或者，控制装置可以控制光电传感器装置的积分时间的持续时间，在此期间，光电传感器装置的光电传感器元件从原始文件收集光，以便改变副扫描方向孔径尺寸。 为了改变主扫描方向上的分辨率，主扫描方向孔径尺寸例如由平均化从多个相邻光电传感器元件输出的信号的平均处理电路改变。 平均处理电路通过对由m个相邻光电传感器元件输出的信号进行平均来改变图像的分辨率，其中m是整数。

公开(公告)号：US20120113316A1

公开(公告)日：2012-05-10

申请号：US13384497

申请日：2010-07-16

申请人： Souichi Ueta ,  Yoshiyuki Suzuki

发明人： Souichi Ueta ,  Yoshiyuki Suzuki

IPC分类号： H04N5/232

CPC分类号： H04N5/23212 ,  G02B7/36 ,  G02B27/0068 ,  G03B13/36 ,  G06K9/4652 ,  G06K9/6201 ,  H04N9/045

摘要： A focusing device including: an optical system that includes a focusing lens; an image sensor that captures a subject image formed via the optical system and outputs an image signal containing a plurality of color components; an edge detection unit that detects an edge in correspondence to each color component among the plurality of color components contained in the image signal; a differential value calculation unit that calculates a differential value of an edge strength of the edge detected by the edge detection unit, in correspondence to the each color component; and a decision-making unit that determines a moving direction along which the focusing lens is to move for purposes of focus adjustment of the optical system based upon the differential value calculated by the differential value calculation unit.

摘要翻译： 一种聚焦装置，包括：包括聚焦透镜的光学系统; 图像传感器，其捕获通过所述光学系统形成的被摄体图像，并输出包含多个颜色分量的图像信号; 边缘检测单元，其检测与所述图像信号中包含的所述多个颜色成分中的每个颜色分量相对应的边缘; 差分值计算单元，对应于每个颜色分量计算由边缘检测单元检测的边缘的边缘强度的微分值; 以及决定单元，其基于由所述差分值计算单元计算出的差分值，确定所述聚焦透镜移动的移动方向以用于所述光学系统的聚焦调整。

公开(公告)号：US09131142B2

公开(公告)日：2015-09-08

申请号：US13384497

申请日：2010-07-16

申请人： Souichi Ueta ,  Yoshiyuki Suzuki

发明人： Souichi Ueta ,  Yoshiyuki Suzuki

IPC分类号： G03B13/36 ,  H04N9/04 ,  H04N5/232 ,  G02B7/36 ,  G02B27/00

CPC分类号： H04N5/23212 ,  G02B7/36 ,  G02B27/0068 ,  G03B13/36 ,  G06K9/4652 ,  G06K9/6201 ,  H04N9/045

摘要： A focusing device including: an optical system that includes a focusing lens; an image sensor that captures a subject image formed via the optical system and outputs an image signal containing a plurality of color components; an edge detection unit that detects an edge in correspondence to each color component among the plurality of color components contained in the image signal; a differential value calculation unit that calculates a differential value of an edge strength of the edge detected by the edge detection unit, in correspondence to the each color component; and a decision-making unit that determines a moving direction along which the focusing lens is to move for purposes of focus adjustment of the optical system based upon the differential value calculated by the differential value calculation unit.

摘要翻译： 一种聚焦装置，包括：包括聚焦透镜的光学系统; 图像传感器，其捕获通过所述光学系统形成的被摄体图像，并输出包含多个颜色分量的图像信号; 边缘检测单元，其检测与所述图像信号中包含的所述多个颜色成分中的每个颜色分量相对应的边缘; 差分值计算单元，对应于每个颜色分量计算由边缘检测单元检测的边缘的边缘强度的微分值; 以及决定单元，其基于由所述差分值计算单元计算出的差分值，确定所述聚焦透镜移动的移动方向以用于所述光学系统的聚焦调整。

公开(公告)号：US5625470A

公开(公告)日：1997-04-29

申请号：US391084

申请日：1995-02-21

申请人： Souichi Ueta ,  Hidehisa Tsuchihashi ,  Toru Ochiai

发明人： Souichi Ueta ,  Hidehisa Tsuchihashi ,  Toru Ochiai

IPC分类号： H04N1/48 ,  H04N1/04

CPC分类号： H04N1/484

摘要： A color image scanner and color image scanning method that generates three different colors independently using multiple LEDs and controls the exposure time of a charge coupled device (CCD) and the light emitting time of the LEDs in order to maintain suitable balance and levels for the colors which are generated. A primary timer sets the operation time of the CCD and a secondary timer sets the ON time for each LED. In addition, an LED drive circuit driving the LEDs has two constant current circuits to more evenly read the images of the document to be scanned.

摘要翻译： 彩色图像扫描器和彩色图像扫描方法，其使用多个LED独立地生成三种不同的颜色并控制电荷耦合器件（CCD）的曝光时间和LED的发光时间，以便保持颜色的适当平衡和电平 生成。 主计时器设置CCD的操作时间，次计时器设置每个LED的ON时间。 此外，驱动LED的LED驱动电路具有两个恒流电路，以更均匀地读取要扫描的文档的图像。

公开(公告)号：US5748800A

公开(公告)日：1998-05-05

申请号：US354797

申请日：1994-12-12

申请人： Souichi Ueta ,  Hayato Hokoi

发明人： Souichi Ueta ,  Hayato Hokoi

IPC分类号： H04N5/208 ,  H04N1/409 ,  H04N1/40 ,  H04N1/38 ,  G06K9/40

CPC分类号： H04N1/4092

摘要： An image reading device selectively performs contrast adjustment on edge portions of the image, while suppressing contrast adjustment on noise and roughness of the image, thus obtaining a smooth and modulated image. Light emitted from a light source passes through or is reflected from an original document and is incident on a CCD line sensor, which outputs an electrical signal. This signal is input into an edge contrast unit, e.g., via a gain control amplifier, an A/D converter and a CCD signal processor. The edge contrast unit includes a computation unit by which edge contrast adjustment is accomplished selectively on input signals based on a comparison coefficient input from a comparison coefficient input unit and a contrast coefficient input from a contrast coefficient input unit. The resulting signal is stored in FIFO memory after passing through a normalizing processor, a DPI converter, and a LUT, for example.

摘要翻译： 图像读取装置选择性地对图像的边缘部分进行对比度调整，同时抑制对图像的噪声和粗糙度的对比度调整，从而获得平滑和调制的图像。 从光源发射的光通过原始文件或从原始文件反射并入射到CCD线传感器上，该CCD线传感器输出电信号。 该信号例如经由增益控制放大器，A / D转换器和CCD信号处理器输入到边缘对比度单元。 边缘对比单元包括基于从比较系数输入单元输入的比较系数和从对比度系数输入单元输入的对比度系数的选择性地对输入信号进行边缘对比度调整的计算单元。 所得到的信号例如在通过归一化处理器，DPI转换器和LUT之后存储在FIFO存储器中。