公开(公告)号：US6061147A

公开(公告)日：2000-05-09

申请号：US986890

申请日：1997-12-08

Applicant: Carl Lee

Inventor： Carl Lee

IPC: H04N1/053 ,  H04N1/193 ,  H04N1/00

CPC classification number: H04N1/053 ,  H04N1/193 ,  H04N2201/04705

Abstract: An apparatus and method are provided for detecting a scanning boundary of a scanner. The apparatus includes a reference unit, an image-pickup unit, and an operating process unit. The detecting method includes steps of: a) providing an initial optical signal; b) receiving the initial optical signal and generating a reference signal in response to the initial optical signal; c) setting a first reference pixel in the scanner; d) receiving the reference signal and generating a second reference pixel; e) calculating a difference between the first reference pixel and the second reference pixel; and f) detecting the scanning boundary after adjusting the scanner according to the difference.

Abstract translation: 提供了一种用于检测扫描仪的扫描边界的装置和方法。 该装置包括参考单元，图像拾取单元和操作处理单元。 检测方法包括以下步骤：a）提供初始光信号; b）接收初始光信号并响应于初始光信号产生参考信号; c）设置扫描器中的第一参考像素; d）接收参考信号并产生第二参考像素; e）计算第一参考像素和第二参考像素之间的差; 以及f）根据差异来调整扫描仪之后检测扫描边界。

公开(公告)号：US4256959A

公开(公告)日：1981-03-17

申请号：US75298

申请日：1979-09-12

Applicant: William A. Monette

Inventor： William A. Monette

IPC: G02B26/12 ,  G03B27/52 ,  G03G15/04 ,  H04N1/028 ,  H04N1/04 ,  H04N1/047 ,  H04N1/10 ,  H04N1/107 ,  H04N1/113 ,  H04N1/193

CPC classification number: H04N1/0287 ,  G03B27/526 ,  G03G15/04036 ,  H04N1/02815 ,  H04N1/0402 ,  H04N1/0473 ,  G03G15/043 ,  H04N1/113 ,  H04N1/193 ,  H04N2201/04705 ,  H04N2201/04755

Abstract: An optical scanning device for scanning a document to produce image signals related to the density of the image on successively scanned document areas includes a platen for supporting a document and a surface of substantially uniform reflectivity extending along the edge of the platen. A bar of light is directed such that it strikes the document and the surface of substantially uniform reflectivity and moves across the document in synchronization with optical scanning of the document. Light reflected from the surface of substantially uniform reflectivity is directed to a plurality of reference transducers which sense the position of the bar of light. A servo control loop, responsive to the reference transducers, positions a reflector during the scanning operation such that the area on the document being scanned is properly illuminated.

Abstract translation: 用于扫描文件以产生与连续扫描的原稿区域上的图像的浓度相关的图像信号的光学扫描装置包括用于支撑原稿的压板和沿着压板的边缘延伸的基本均匀的反射率的表面。 一条光被引导，使得它与原稿和文件的光学扫描同步地撞击文件和表面，具有基本上均匀的反射率并且跨过文件移动。 从基本上均匀反射率的表面反射的光被引导到多个参考换能器，其感测光棒的位置。 响应于参考换能器的伺服控制回路在扫描操作期间定位反射器，使得被扫描的文件上的区域被适当地照亮。

公开(公告)号：US20040160652A1

公开(公告)日：2004-08-19

申请号：US10715741

申请日：2003-11-18

Inventor： Kenji Kimura ,  Eiji Satake

IPC: H04N001/04 ,  H04N001/46

CPC classification number: H04N1/40056 ,  H04N1/053 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/02439 ,  H04N2201/03162 ,  H04N2201/04705 ,  H04N2201/04734 ,  H04N2201/04748 ,  H04N2201/04781 ,  H04N2201/04787 ,  H04N2201/04794

Abstract: An image sensor controller and methods achieve faster image reading speeds by controlling the frequency of image sensor transfer clocks null1, null2 in accordance with the particular output period. Such an image sensor controller includes a drive controller that supplies to a transfer section of the image sensor transfer clocks null1, null2 whose clock frequency during dummy pixel output periods is faster than it is during an effective pixel output period, or whose clock frequency during non-reading pixel output periods is faster than it is during a reading pixel output period. A pattern selector selects among clock patterns in a table for setting null1, null2 according to the output periods of the image sensor. Even when the clock frequency of null1, null2 changes, a transfer clock ADCK signal can be supplied at a constant clock frequency to an A/D converter.

Abstract translation: 图像传感器控制器和方法通过根据特定输出周期控制图像传感器传送时钟phi1，phi2的频率来实现更快的图像读取速度。 这样的图像传感器控制器包括：驱动控制器，其向虚拟像素输出周期内的时钟频率比有效像素输出周期期间更快的图像传感器传送时钟phi1，phi2的传送部分提供，或者在非有效像素输出期间的时钟频率 读取像素输出周期比读取像素输出周期期间更快。 模式选择器根据图像传感器的输出周期来选择用于设置phi1，phi2的表中的时钟模式。 即使phi1，phi2的时钟频率发生变化，也可以以恒定的时钟频率向A / D转换器提供传输时钟ADCK信号。

公开(公告)号：US5523876A

公开(公告)日：1996-06-04

申请号：US496484

申请日：1995-06-29

Applicant: Mark E. Tellam ,  Mark G. Brook ,  Kevin J. Haded ,  Joseph A. Wheeler

Inventor： Mark E. Tellam ,  Mark G. Brook ,  Kevin J. Haded ,  Joseph A. Wheeler

IPC: G03B27/50 ,  G06T1/00 ,  H04N1/00 ,  H04N1/028 ,  H04N1/04 ,  H04N1/047 ,  H04N1/10 ,  H04N1/107 ,  H04N1/193 ,  G02B26/08

CPC classification number: H04N1/02845 ,  H04N1/00795 ,  H04N1/02815 ,  H04N1/0285 ,  H04N1/0287 ,  H04N1/0289 ,  H04N1/0464 ,  H04N1/0467 ,  H04N1/047 ,  H04N1/1026 ,  H04N1/1043 ,  H04N1/1048 ,  H04N1/1052 ,  H04N1/193 ,  H04N1/1017 ,  H04N2201/0418 ,  H04N2201/04705 ,  H04N2201/04727 ,  H04N2201/04734

Abstract: A scanning apparatus providing separate fixed object focal planes for transmissive and reflective original documents to be scanned, wherein a scan carriage containing illumination, sensor, and optical elements is moved together to scan an original document and to obtain a digitized representation thereof. The movable scan carriage has an illumination source disposed between the reflective and transmissive object focal planes, with the object focal plane to be used selected by changing the position of one or more optical elements within the scan carriage. The scan carriage is suspended along an axis substantially parallel to a scan line of a scanned original document and passing through a point substantially coincident with the scan line, thereby minimizing variations in lighting conditions due to vibration of the scan carriage.

公开(公告)号：US06278483B1

公开(公告)日：2001-08-21

申请号：US09276073

申请日：1999-03-25

Applicant: Kenneth Sartor

Inventor： Kenneth Sartor

IPC: H04N5253

CPC classification number: H04N1/00267 ,  H04N1/00249 ,  H04N1/0408 ,  H04N1/0455 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N1/3873 ,  H04N2201/04705 ,  H04N2201/04718 ,  H04N2201/04732 ,  H04N2201/04793

Abstract: A process for obtaining image coordinates of pixels of a digital image scanned from an original image on photographic film that has at least two fiducial marks on the photographic film associated with the original includes the steps of scanning an area of the photographic film, including the original image and the fiducial marks, with an original scan resolution to form an original digital image. The dimensional position of the fiducial marks in the original digital image is detected, and the dimensional distance between pairs of the fiducial marks is determined. The number of pixels in the original digital image between the pairs of fiducial marks is determined, and image coordinates of a location of a selected pixel of the original digital image are referenced with respect to the fiducial marks. The referencing is effected by computing a dimension-to-pixel conversion factor &agr; by dividing the dimensional distance between pairs of the fiducial marks by the number of pixels in the original digital image between the pairs of fiducial marks, and storing the dimension-to-pixel conversion factor, the reference location of the selected pixel, the original scan resolution, the dimensional distance between pairs of the fiducial marks, and the number of pixels in the original digital image between the pairs of fiducial marks on the film.

Abstract translation: 一种用于获得从原始图像扫描的数字图像的像素的图像坐标的处理，该图像坐标在与原稿相关联的摄影胶片上具有至少两个基准标记的摄影胶片上包括以下步骤：扫描照相胶卷的区域，包括原稿 图像和基准标记，用原始扫描分辨率形成原始数字图像。 检测原始数字图像中的基准标记的尺寸位置，并确定基准对之间的尺寸距离。 确定基准对标记之间的原始数字图像中的像素数，并且相对于基准标记参考原始数字图像的选定像素的位置的图像坐标。 参考是通过将基准对标记之间的尺寸距离除以基准标记对之间的原始数字图像中的像素数量来计算尺寸到像素的转换因子α来实现的， 像素转换因子，所选像素的参考位置，原始扫描分辨率，基准对之间的尺寸距离以及原始数字图像中的基准对标记之间的像素数量。

公开(公告)号：US5895913A

公开(公告)日：1999-04-20

申请号：US781781

申请日：1997-01-09

Applicant: Michael L. Christensen

Inventor： Michael L. Christensen

IPC: H04N1/04 ,  G06T1/00 ,  H04N1/047 ,  H04N1/10 ,  H04N1/193 ,  H01J3/14 ,  H01L27/00

CPC classification number: H04N1/0473 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/04705

Abstract: Apparatus for sensing an initial position of a moveable carriage mounted within a housing of an imaging device may comprise a detector having a plurality of light sensitive elements for detecting objects within a field of view. At least one of the light sensitive elements is an image sensing element and at least one of the light sensitive elements is a position sensing element. A reference mark is positioned on the housing so that is within the field of view of the position sensing element of the detector when the carriage is at about a home position. An image data processor connected to the detector and responsive to the output signals generated thereby determines whether the reference mark is within the field of view of the position sensing element of the detector.

Abstract translation: 用于感测安装在成像装置的壳体内的可移动滑架的初始位置的装置可以包括具有用于检测视野内的物体的多个光敏元件的检测器。 光敏元件中的至少一个是图像感测元件，并且至少一个感光元件是位置感测元件。 参考标记位于壳体上，使得当托架位于原位置时，位于检测器的位置检测元件的视场内。 连接到检测器并且响应于由此产生的输出信号的图像数据处理器确定参考标记是否在检测器的位置检测元件的视场内。

公开(公告)号：US5272493A

公开(公告)日：1993-12-21

申请号：US862150

申请日：1992-04-02

Applicant: Fred F. Hubble, III ,  Thomas J. Hammond ,  James P. Martin

Inventor： Fred F. Hubble, III ,  Thomas J. Hammond ,  James P. Martin

IPC: B41J2/41 ,  B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G03G15/01 ,  G03G21/00 ,  G03G21/14 ,  G05D3/12 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N1/29 ,  G01D15/14 ,  G01D9/42 ,  G01D15/06

CPC classification number: H04N1/0473 ,  G03G2215/017 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/04705 ,  H04N2201/04755 ,  H04N2201/04786

Abstract: A precision belt hole sensor and associated conditioning circuitry provides precise trigger signals that enable synchronous printing in a color printer. An image bar recording system, which, in a preferred embodiment, utilizes a plurality of LED image bars, forms a plurality of latent images on a moving photoreceptor which may subsequently be developed in different colors. A pair of sensors associated with each printbar views illuminated pixels at the end of a printbar, through a pair of oppositely aligned photoreceptor holes. The signals detected by the sensor are amplified and processed to provide inputs to a comparitor circuit which generates an output signal at a time which precisely defines the passage of the trailing edge of the hole, past the sensors. The signal from the comparitor is used to accomplish skew registration of the printbar and to provide sync signals to enable precise formation of the leading edge of the associated image frame.

Abstract translation: 精密带孔传感器和相关的调理电路提供精确的触发信号，可在彩色打印机中进行同步打印。 在优选实施例中，利用多个LED图像条的图像条记录系统在可以随后以不同颜色显影的移动感光体上形成多个潜像。 与每个打印机相关联的一对传感器通过一对相对对准的感光体孔来观察在打印头端部处的发光像素。 由传感器检测到的信号被放大和处理，以向比较器电路提供输入，该比较器电路在精确地限定孔的后缘通过传感器的时间产生输出信号。 来自比较器的信号用于实现打印条的偏斜配准，并且提供同步信号以能够精确地形成相关图像帧的前沿。

公开(公告)号：US5130525A

公开(公告)日：1992-07-14

申请号：US589697

申请日：1990-09-28

Applicant: Randall C. Ryon

Inventor： Randall C. Ryon

IPC: G03B27/50 ,  B41J2/44 ,  G03B27/62 ,  G03G15/04 ,  H04N1/00 ,  H04N1/04 ,  H04N1/047 ,  H04N1/10 ,  H04N1/193

CPC classification number: H04N1/193 ,  H04N1/0473 ,  H04N1/1013 ,  H04N2201/04705 ,  H04N2201/04755 ,  H04N2201/04786

Abstract: A document image scanner is provided in which a platen is provided with an optical target in the form of a succession of ruling lines provided at one edge thereof. The ruling lines are inclined at an angle relative to a direction of scan of an optical sensor array such that 5% or less coverage change is provided over each pixel on a scanning line of the array. An output signal from scanning each line can be produced as a square wave signal. From the generated signal, the scanning motion may be corrected. A diagnostic tool is also provided for diagnosing scanning motion using at least two of the optical targets.

Abstract translation: 提供了一种文件图像扫描仪，其中压板设置有设置在其一个边缘处的一系列划线形式的光学目标。 刻划线相对于光学传感器阵列的扫描方向以一定角度倾斜，使得在阵列的扫描线上的每个像素上提供5％或更小的覆盖变化。 可以产生来自扫描每行的输出信号作为方波信号。 根据生成的信号，可以校正扫描运动。 还提供诊断工具用于使用至少两个光学目标来诊断扫描运动。

公开(公告)号：US06178015B1

公开(公告)日：2001-01-23

申请号：US09092263

申请日：1998-06-05

Applicant: Wayne Lee ,  Jenn-Tsair Tsai

Inventor： Wayne Lee ,  Jenn-Tsair Tsai

IPC: H04N104

CPC classification number: H04N1/0473 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/02439 ,  H04N2201/04705 ,  H04N2201/0472 ,  H04N2201/04727 ,  H04N2201/04734 ,  H04N2201/04755 ,  H04N2201/04794

Abstract: An optical ruler is provided on the back surface side of the top housing and close to the transparent window along a scanning direction for providing a calibration reference. The optical ruler is formed with black and white blocks alternately arranged in an array. An image sensor which has a width larger than the width of the transparent window is provided for reading the image information of the optical ruler along with a scanned sheet while being progressively driven by a step motor. A determining element computes the actual moving steps of the step motor by calculating the number of black and white pixels from the scanned image of the optical ruler. When the actual moving steps of the step motor are fewer than a predetermined threshold value, or when the frequency of the occurrences of the scan line losses is higher than a predetermined threshold value, the image sensor is driven by the step motor to scan the sheet again. As a result, the step motor can be operated in response to a closed loop control signal depending on the actual moving steps of the step motor.

Abstract translation: 光学尺被设置在顶部壳体的背面侧并沿着扫描方向靠近透明窗口，以提供校准基准。 光学标尺形成有交替排列成阵列的黑白块。 提供宽度大于透明窗口宽度的图像传感器，用于通过步进电机逐步驱动来读取光学标尺的图像信息以及扫描的片材。 确定元件通过从光学标尺的扫描图像计算黑白像素的数量来计算步进电机的实际移动步长。 当步进电动机的实际移动步骤小于预定阈值时，或者当扫描线损耗的频率高于预定阈值时，图像传感器由步进电机驱动以扫描片材 再次。 结果，可以根据步进电动机的实际移动步骤响应于闭环控制信号来操作步进电动机。

公开(公告)号：US5892595A

公开(公告)日：1999-04-06

申请号：US898091

申请日：1997-07-23

Applicant: Shinji Yamakawa ,  Koichi Noguchi ,  Shinichiro Wada

Inventor： Shinji Yamakawa ,  Koichi Noguchi ,  Shinichiro Wada

IPC: H04N1/10 ,  H04N1/193 ,  H04N1/48 ,  H04N1/46 ,  G03F3/08 ,  G06K9/00

CPC classification number: H04N1/486 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/04705 ,  H04N2201/04706 ,  H04N2201/04786

Abstract: An image reading apparatus includes a reference pattern having slanting lines, which is provided outside a reading range and read by image sensors arranged at separate positions in a sub-scanning direction. A reference-position determining unit detects one of the slanting lines in the reference pattern based on image data output from one of the image sensors so that a position of the image data when one of the slanting lines is detected is determined as a reference position. First and second delay units have line memories which store image data read out from an original image having lines, the delay units delaying outputting of the image data from the line memories line by line. First and second determining units determine image data having color values at imaginary points. An error measurement unit selects one of the imaginary points whose image data has a minimum difference between the color values of the image data. First and second line correcting units output image data having the color values at a corrected position of each picture element by using an interpolation function, the interpolation function having a set of correction factors determined based on a distance between the selected imaginary point and the reference position.

Abstract translation: 图像读取装置包括具有倾斜线的参考图案，该参考图案设置在读取范围之外并且被设置在副扫描方向上的分离位置处的图像传感器读取。 参考位置确定单元基于从一个图像传感器输出的图像数据来检测参考图案中的一个倾斜线，使得当检测到倾斜线之一时的图像数据的位置被确定为参考位置。 第一和第二延迟单元具有线存储器，其存储从具有线的原始图像读出的图像数据，延迟单元延迟从行存储器逐行输出图像数据。 第一和第二确定单元确定在虚拟点处具有颜色值的图像数据。 误差测量单元选择其图像数据在图像数据的颜色值之间具有最小差异的虚数点之一。 第一和第二行校正单元通过使用内插函数输出在每个像素的校正位置具有颜色值的图像数据，该插值函数具有基于所选择的虚点与参考位置之间的距离确定的一组校正因子 。