公开(公告)号：US20130271975A1

公开(公告)日：2013-10-17

申请号：US13444322

申请日：2012-04-11

Applicant: Chengwu Cui ,  Joshua Tyler Strow

Inventor： Chengwu Cui ,  Joshua Tyler Strow

IPC: F21V7/04 ,  F21V7/20

CPC classification number: F21V7/04 ,  F21V29/505 ,  H04N1/0281 ,  H04N1/0285 ,  H04N1/02865

Abstract: An illumination assembly for a scanner comprising a light source, a primary reflector and a secondary reflector. The primary reflector comprises a lower member and upper member spaced away from the lower member. The upper member has a heatsink for dissipating the heat of the light source. The light source is positioned between the lower and upper members and is attached to the upper member allowing for decreased vertical height for the illumination assembly.

Abstract translation: 一种用于扫描器的照明组件，包括光源，主反射器和次反射器。 主反射器包括下部构件和与下部构件间隔开的上部构件。 上部构件具有用于耗散光源的热量的散热器。 光源位于下部和上部构件之间并且附接到上部构件，允许照明组件的垂直高度减小。

公开(公告)号：US20090279178A1

公开(公告)日：2009-11-12

申请号：US12117834

申请日：2008-05-09

Applicant: Chengwu Cui

Inventor： Chengwu Cui

IPC: G02B27/00

CPC classification number: G02B27/0988 ,  H04N1/03 ,  H04N1/0303 ,  H04N1/0305 ,  H04N1/1013 ,  H04N1/12 ,  H04N2201/02493

Abstract: A scanhead of an imaging apparatus for providing image illumination uniformity for imaging of a media sheet, and a method thereof, are disclosed. The scanhead includes a lens, a lens shading plate and a sensor array. The lens is capable of receiving light reflected from the media sheet and focusing the received light. The lens shading plate is capable of assuming a lens shading plate position of a plurality of lens shading plate positions between the lens and the sensor array for receiving the light focused by the lens. The lens shading plate, on assuming the lens shading plate position, is capable of adjusting the light received from the lens for focusing the light onto the sensor array, thereby providing image illumination uniformity, for the imaging of the media sheet.

Abstract translation: 公开了一种用于提供用于对介质片进行成像的图像照明均匀性的成像装置的扫描头及其方法。 扫描头包括透镜，透镜遮光板和传感器阵列。 透镜能够接收从介质片反射的光并聚焦接收到的光。 透镜遮光板能够在透镜和传感器阵列之间设置多个透镜遮蔽板位置的透镜遮光板位置，用于接收由透镜聚焦的光。 透镜遮光板在假设透镜遮光板位置时能够调节从透镜接收的光以将光聚焦到传感器阵列上，从而提供图像照明均匀性，用于介质片的成像。

公开(公告)号：US20090168125A1

公开(公告)日：2009-07-02

申请号：US12006191

申请日：2007-12-31

Applicant: Stephen Wilson ,  Charles Brandon Langrel ,  Chengwu Cui

Inventor： Stephen Wilson ,  Charles Brandon Langrel ,  Chengwu Cui

IPC: H04N1/04

CPC classification number: H04N1/207 ,  H04N1/00572 ,  H04N1/00578 ,  H04N1/00604 ,  H04N1/00612

Abstract: A scanning device for simplex and duplex scanning. The device may include a scan head for capturing content appearing on a page; a substantially C-shaped first scan path for simplex scanning, the first scan path adapted to guide the page relative to the scan head for scanning a first side of the page; a second scan path for duplex scanning, the second scan path adapted to guide the page relative to the scan head for scanning a first side of the page and a second side of the page; a path diverter, the path diverter adapted to direct the page to the first path or the second path; and a controller for controlling the first and second scan paths and the diverter. The second scan path forms a loop for moving the first and second sides of the page so that each is temporarily disposed adjacent the scan head.

Abstract translation: 用于单工和双面扫描的扫描装置。 该设备可以包括用于捕获出现在页面上的内容的扫描头; 用于单工扫描的大致C形的第一扫描路径，所述第一扫描路径适于相对于扫描头引导页面以扫描页面的第一面; 用于双面扫描的第二扫描路径，所述第二扫描路径适于引导所述页面相对于所述扫描头用于扫描所述页面的第一侧和所述页面的第二侧; 路径转向器，所述路径转向器适于将所述页引导到所述第一路径或所述第二路径; 以及用于控制第一和第二扫描路径和分流器的控制器。 第二扫描路径形成用于移动页面的第一和第二侧的环，使得每个扫描路径临时设置在扫描头附近。

公开(公告)号：US20090153919A1

公开(公告)日：2009-06-18

申请号：US11954714

申请日：2007-12-12

Applicant: Charles B. Langrel ,  Chengwu Cui ,  Allen W. Waugerman

Inventor： Charles B. Langrel ,  Chengwu Cui ,  Allen W. Waugerman

IPC: H04N1/04

CPC classification number: H04N1/1013 ,  H04N2201/0422

Abstract: A method for providing a visible reference marker on a scanning unit for orienting an item to be scanned or copied includes the steps of emitting a light from a light source, guiding the light to a scanning unit having a contact glass scanning surface, and redirecting the light to define an illuminated reference marker substantially adjacent to the contact glass. A reference marker assembly for accomplishing that method is provided, including a light source, a waveguide for guiding light emitted from the light source to a scanning unit having a contact glass, and a redirector for redirecting the light to define an illuminated reference marker adjacent to the contact glass, for orienting an item to be copied or scanned. The light source may be a light emitting diode, and the redirector may be a light diffuser for redirecting the collected light to define an illuminated reference marker adjacent to the contact glass.

Abstract translation: 一种用于在扫描单元上提供可视参考标记以定向待扫描或复制的物品的方法包括以下步骤：从光源发射光，将光引导到具有接触玻璃扫描表面的扫描单元，并且重定向 光以限定基本上与接触玻璃相邻的照明参考标记。 提供了一种用于实现该方法的参考标记组件，包括光源，用于将从光源发射的光引导到具有接触玻璃的扫描单元的波导和用于重定向光的重定向器，以限定与...相邻的照明参考标记 接触玻璃，用于定向要复制或扫描的物品。 光源可以是发光二极管，并且重定向器可以是用于重定向收集的光以限定与接触玻璃相邻的照明参考标记的光漫射器。

公开(公告)号：US07423789B2

公开(公告)日：2008-09-09

申请号：US11217744

申请日：2005-09-01

Applicant: Jesse R. Borders ,  Chengwu Cui ,  Larry L Kiser

Inventor： Jesse R. Borders ,  Chengwu Cui ,  Larry L Kiser

IPC: H04N1/00 ,  H04N1/46 ,  G06K9/38 ,  G06K9/40

CPC classification number: H04N1/00002 ,  H04N1/00013 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/4076

Abstract: Methods of identifying the location and dimensions of a contaminant particle on a calibration strip comprise imaging a calibration strip comprising a plurality of channels and a plurality of pixel columns. The method also includes generating a normalized local average pixel intensity value and locating a contaminant particle in a pixel column by comparing the intensity of an individual pixel in the pixel column to the normalized local average pixel intensity value. An intensity value of an individual pixel less than a predefined limit set below the normalized local average pixel intensity value corresponds to a location of a contaminant particle. The method further includes identifying the number of adjacent pixels in a pixel column less than a predefined limit set below the normalized local average pixel intensity value.

Abstract translation: 识别校准条上的污染物颗粒的位置和尺寸的方法包括成像包括多个通道和多个像素列的校准条。 该方法还包括通过将像素列中的各个像素的强度与归一化的局部平均像素强度值进行比较来生成归一化的局部平均像素强度值并将像素列中的污染物颗粒定位。 小于低于归一化局部平均像素强度值的预定义限度的单个像素的强度值对应于污染物颗粒的位置。 所述方法还包括识别像素列中小于规范化局部平均像素强度值之下的预定极限集合的相邻像素的数量。

公开(公告)号：US20060252023A1

公开(公告)日：2006-11-09

申请号：US11120934

申请日：2005-05-03

Applicant: Chengwu Cui

Inventor： Chengwu Cui

IPC: G09B3/00 ,  G09B7/00

CPC classification number: G09B7/06

Abstract: Methods for automatically grading multiple choice tests using test question sheets marked by a test-taker. Image processing algorithms automatically recognize the circled answer selections on the test question sheets. Using the invention multiple choice tests may be scanned and graded automatically without the use of bubble sheets, thereby simplifying and reducing the cost of testing.

Abstract translation: 使用由测试者标记的测试问题表自动分级多项选择测试的方法。 图像处理算法自动识别测试问题单上的圆圈答案选择。 使用本发明，可以在不使用气泡片的情况下自动扫描和分级多项选择测试，从而简化和降低测试成本。

公开(公告)号：US20060119898A1

公开(公告)日：2006-06-08

申请号：US11006425

申请日：2004-12-07

Applicant: Chengwu Cui

Inventor： Chengwu Cui

IPC: H04N1/40

CPC classification number: H04N1/32203 ,  H04N1/32325 ,  H04N2201/0081 ,  H04N2201/0082

Abstract: Information on a document may be encoded using indicia, such as end-to-end line segments, that form one or more visually non-intrusive borders. The coded borders may be decoded from the document using a scanner, such as an optical scanner. The coded borders also serve as a visually non-intrusive way to separate and identify content in the document.

Abstract translation: 可以使用形成一个或多个视觉上非侵入性边界的标记（例如端对端线段）对文档的信息进行编码。 可以使用诸如光学扫描仪的扫描仪从文档解码编码边界。 编码边界也用作视觉上非侵入式的方式来分离和识别文档中的内容。

公开(公告)号：US08485675B2

公开(公告)日：2013-07-16

申请号：US12979882

申请日：2010-12-28

Applicant: Eugene David Allen ,  Chengwu Cui ,  Joshua Tyler Strow

Inventor： Eugene David Allen ,  Chengwu Cui ,  Joshua Tyler Strow

IPC: G02B5/08

CPC classification number: G03G15/04036

Abstract: An illumination assembly for a scanner according to one example embodiment includes a light source, a first reflector and a second reflector. The first reflector has a curved structure and is positioned directly in the optical path of the light source. The first reflector has a first portion and a second portion. The first portion of the first reflector is positioned to reflect light received from the light source toward a target area to be scanned. The second portion of the first reflector is positioned to reflect light received from the light source toward the second reflector. The second reflector is positioned to reflect light received from the first reflector toward the target area.

Abstract translation: 根据一个示例实施例的用于扫描仪的照明组件包括光源，第一反射器和第二反射器。 第一反射器具有弯曲结构并且直接位于光源的光路中。 第一反射器具有第一部分和第二部分。 第一反射器的第一部分被定位成将从光源接收的光朝向待扫描的目标区域反射。 第一反射器的第二部分被定位成将从光源接收的光朝向第二反射器反射。 第二反射器被定位成将从第一反射器接收的光反射到目标区域。

公开(公告)号：US08432584B2

公开(公告)日：2013-04-30

申请号：US11964082

申请日：2007-12-26

Applicant: Chengwu Cui

Inventor： Chengwu Cui

IPC: H04N1/04

CPC classification number: H04N1/02815 ,  H04N1/0282 ,  H04N1/0287 ,  H04N1/02885 ,  H04N2201/0081

Abstract: A scan module including an image sensor defining a scan field, at least one lamp positioned to illuminate at least a portion of the scan field, and a second light source positioned to provide illumination for the portion of the scan field.

Abstract translation: 一种扫描模块，包括限定扫描场的图像传感器，定位成照射扫描场的至少一部分的至少一个灯，以及定位成为扫描场的该部分提供照明的第二光源。

公开(公告)号：US08405889B2

公开(公告)日：2013-03-26

申请号：US12790392

申请日：2010-05-28

Applicant: Chengwu Cui ,  Charles Brandon Langrel

Inventor： Chengwu Cui ,  Charles Brandon Langrel

IPC: H04N1/04

CPC classification number: H04N1/121 ,  H04N1/1017 ,  H04N1/123 ,  H04N1/193 ,  H04N2201/0081 ,  H04N2201/0442 ,  H04N2201/0446

Abstract: An imaging apparatus includes an automatic document feeder having a media feeding section, a media collecting section and a media conveying path extending from the media feeding section to the media collecting section. The imaging apparatus includes a scan head adjacent to the automatic document feeder. The scan head is moveable to a raised position aligned with a portion of the media conveying path for scanning a media sheet in the portion of the media conveying path.

Abstract translation: 一种成像装置包括具有介质供给部，介质收集部和从介质供给部延伸到介质收集部的介质输送路径的自动进纸器。 成像装置包括与自动文件进给器相邻的扫描头。 扫描头可移动到与介质输送路径的一部分对准的升高位置，以便在介质输送路径的该部分中扫描介质片。