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    Method and apparatus for correcting alignment error of scanning head of a shuttle type scanner
    21.
    发明授权
    Method and apparatus for correcting alignment error of scanning head of a shuttle type scanner 失效
    用于校正梭式扫描器的扫描头的对准误差的方法和装置

    公开(公告)号：US06243173B1

    公开(公告)日：2001-06-05

    申请号：US09115760

    申请日：1998-07-15

    Applicant: Hyuk-jae Lee ,  Goo-soo Gahang

    Inventor： Hyuk-jae Lee ,  Goo-soo Gahang

    IPC: H04N104

    CPC classification number: H04N1/128 ,  H04N1/053 ,  H04N1/1911 ,  H04N2201/04703 ,  H04N2201/0472 ,  H04N2201/04732 ,  H04N2201/04787

    Abstract: Disclosed are a method and an apparatus for correcting an alignment error of a scanning head of a shuttle type scanner capable of compensating an error occurred in a manufacturing process of a product or the alignment error generated by an impact applied in use. When an alignment error correction mode is selected at a preset time, the scanning head is moved to a position facing a correcting pattern formed on a correction plate. The correcting pattern is scanned through the scanning head and the alignment error is calculated from the scanned pattern image data using a predetermined operation function. After performing a first correction to the calculated alignment error by moving first and last pixels of the image data, a second correction to the alignment error is performed by applying a preset correction function to remaining pixels excluding the first and last pixels. As a result, unnecessary operations occurred in correcting the alignment error mechanically are removed, thereby increasing the productivity. In addition, since the alignment error within the permitted limit is corrected by the software, a stable image data without any distortion can be obtained.

    Abstract translation: 公开了一种用于校正穿梭式扫描仪的扫描头的对准误差的方法和装置，其能够补偿在产品的制造过程中发生的错误或由在使用中施加的冲击产生的对准误差。 当在预设时间选择对准误差校正模式时，扫描头移动到面对校正板上形成的校正图案的位置。 通过扫描头扫描校正图案，并且使用预定的操作功能从扫描图案图像数据计算对准误差。 通过移动图像数据的第一和最后一个像素对计算出的对准误差进行第一次校正之后，通过对除了第一和最后像素之外的剩余像素应用预设校正函数来执行对准误差的第二校正。 结果，机械地校正校准误差中发生的不必要的操作被去除，从而提高了生产率。 此外，由于通过软件校正允许极限内的对准误差，因此可以获得没有任何失真的稳定图像数据。

    Position compensating technique used during two-way printing and scanning
    22.
    发明授权
    Position compensating technique used during two-way printing and scanning 失效
    双向打印和扫描时使用的位置补偿技术

    公开(公告)号：US6155665A

    公开(公告)日：2000-12-05

    申请号：US89663

    申请日：1998-06-03

    Applicant: Myoung-Sool Lee

    Inventor： Myoung-Sool Lee

    IPC: B41J2/51 ,  B41J19/14 ,  B41J19/20 ,  B41J29/393 ,  H04N1/047 ,  H04N1/12 ,  H04N1/191 ,  G01D15/16

    CPC classification number: B41J19/202 ,  H04N1/047 ,  H04N1/0473 ,  H04N1/1911 ,  B41J19/142 ,  H04N2201/04703 ,  H04N2201/04717 ,  H04N2201/04732 ,  H04N2201/04787

    Abstract: An error-compensating technique for scanned data, using a scanner having both a printing device which performs a bi-directional printing operation and a scanner device which moves in the same direction as that of the printing device and performs a scanning function, includes: a special pattern-printing process in which the printing device moves in a preset fixed direction and prints a special pattern-printing process; a pattern-recognizing process in which the scanning device moves in the same direction as that of the printing direction and recognizes the pattern; a pattern-recognizing process in which the scanning device moves in the opposite direction to that of the printing direction and recognizes the pattern; and a position compensation data-yielding process in which position compensation data for the bi-directional scanning data is yielded.

    Abstract translation: 扫描数据的误差补偿技术，使用具有进行双向打印操作的打印装置的扫描仪和沿与打印装置相同的方向移动并执行扫描功能的扫描仪装置，包括： 特殊图案印刷处理，其中打印装置沿预设的固定方向移动并打印特殊的图案印刷处理; 扫描装置沿与打印方向相同的方向移动并识别图案的图案识别处理; 扫描装置沿与打印方向相反的方向移动并识别图案的图案识别处理; 以及产生双向扫描数据的位置补偿数据的位置补偿数据生成处理。

    Linear sensor imaging method and apparatus
    25.
    发明授权
    Linear sensor imaging method and apparatus 失效
    线性传感器成像方法和装置

    公开(公告)号：US6002815A

    公开(公告)日：1999-12-14

    申请号：US892577

    申请日：1997-07-16

    Applicant: Guy Broer Immega ,  Geoffrey Edward Vanderkooy

    Inventor： Guy Broer Immega ,  Geoffrey Edward Vanderkooy

    IPC: H04N1/19 ,  G06T1/00 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N1/48 ,  G06K7/00 ,  G06K9/00 ,  G01J1/42 ,  H04N1/04

    CPC classification number: H04N1/0473 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/04787 ,  H04N2201/04794

    Abstract: A first linear sensor array produces, at a first time of occurrence, a first image of a segment of an object as the object moves across the sensor at a variable speed. The image and its time of occurrence are accumulated in a buffer. As the object continues to move across the sensor, a successive plurality of the segment images seen by the first sensor are accumulated in the buffer, together with their respective times of occurrence. A second linear sensor array spaced a distance d from the first array produces, at a second time of occurrence, a second image of another segment of the moving object. The second image is compared with the accumulated first images to determine which of the accumulated first images is most similar to the second image. The object's speed S can then be estimated as an appropriately weighted function of d/(t.sub.j -t.sub.m) [i.e. S.varies.d/(t.sub.j -t.sub.m)], where t.sub.j is the time of occurrence of a selected one of the second images and t.sub.m is the time of occurrence of the first image most similar to the selected second image. By continually monitoring the object's speed in this fashion, one may select and transfer into an image buffer those image segments which together form the highest quality image of the object, independently of the object's speed of motion past the sensor and without the need for expensive, bulky stepper motors, mechanical motion encoders, or the like.

    Abstract translation: 第一线性传感器阵列在出现的第一时间产生当物体以可变速度跨过传感器移动时物体的段的第一图像。 图像及其发生时间累积在缓冲器中。 当物体继续移动穿过传感器时，由第一传感器看到的连续多个段图像以及它们各自出现的次数被累积在缓冲器中。 与第一阵列间隔开距离d的第二线性传感器阵列在出现的第二时间产生移动物体的另一段的第二图像。 将第二图像与累积的第一图像进行比较，以确定哪个累积的第一图像最接近于第二图像。 然后可以将物体的速度S估计为d /（tj-tm）的适当加权函数[即 S PROPORTIONAL d /（tj-tm）]，其中tj是所选择的第二图像的出现时间，tm是与所选择的第二图像最相似的第一图像的出现时间。 通过以这种方式持续监视物体的速度，人们可以选择并转移到图像缓冲器中，这些图像段一起形成物体的最高质量的图像，而不依赖于物体通过传感器的运动速度，而不需要昂贵的， 大型步进电机，机械运动编码器等。

    Method and apparatus for calibrating the horizontal starting point of a document on a flatbed scanner
    26.
    发明授权
    Method and apparatus for calibrating the horizontal starting point of a document on a flatbed scanner 失效
    用于校准平板扫描器上文档的水平起点的方法和装置

    公开(公告)号：US5719404A

    公开(公告)日：1998-02-17

    申请号：US637048

    申请日：1996-04-24

    Applicant: Jenn-Tsair Tsai

    Inventor： Jenn-Tsair Tsai

    IPC: H04N1/053 ,  H04N1/10 ,  H04N1/193 ,  G01N21/86

    CPC classification number: H04N1/053 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/04758

    Abstract: A method and apparatus is used on a flatbed scanner for calibrating the horizontal starting point of a document which is to be scanned by the flatbed scanner. The flatbed scanner is of the type having a light-sensing device as a CCD or CIS device consisting of a linear array of light-sensing cells and a movable scan head. In the method and apparatus, two reflective marks are fixed at a predetermined calibrating position to the front edge of the document. During the calibration process, the movable scan head is moved to the calibrating position where it senses the two reflective marks to thereby determine the distance in pixels between the first light-sensing cell on the linear array and the first reflective mark, and also the distance in pixel between the two reflective marks. The distance in pixel between the first reflective mark and the horizontal starting point of the document can then be determined. After that, the distance in pixels between the first light-sensing cell on the linear array and the horizontal starting point of the document is determined to thereby determine which light-sensing cell on the linear array is to be used as the starting light-sensing cell corresponding to the horizontal starting point of the document. The movable scan head is then further moved to the front edge of the document where the scan process over the document is started.

    Abstract translation: 在平板扫描器上使用方法和装置来校准要由平板扫描仪扫描的文件的水平起点。 平板扫描器是具有由感光单元的线阵列和可移动扫描头组成的CCD或CIS装置的感光装置的类型。 在该方法和装置中，两个反射标记固定在预定的校准位置到文件的前边缘。 在校准过程中，可移动扫描头移动到校准位置，在该位置检测两个反射标记，从而确定线阵列上的第一感光单元与第一反射标记之间的距离（以像素为单位），以及距离 在两个反射标记之间的像素中。 然后可以确定文档的第一反射标记和水平起始点之间的像素间距。 之后，确定线性阵列上的第一感光单元与原稿的水平起点之间的像素间距，从而确定将线阵列上的哪个感光单元用作起始感光 对应于文档的水平起点的单元。 然后可移动扫描头进一步移动到原稿的扫描处理开始的文档的前边缘。

    Image reader
    27.
    发明授权
    Image reader 失效
    图像阅读器

    公开(公告)号：US5115478A

    公开(公告)日：1992-05-19

    申请号：US595698

    申请日：1990-10-10

    Applicant: Masamichi Sugiura

    Inventor： Masamichi Sugiura

    IPC: H04N1/047 ,  H04N1/10 ,  H04N1/193 ,  H04N1/407

    CPC classification number: H04N1/4076 ,  H04N1/0473 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/04786

    Abstract: A scan apparatus, comprising: a platen on which a document can be placed; a criterion member on which at least one black zone and at least one white zone are formed successively in the subscan direction, criterion member being arranged near the platen on the side from which a subscan is started; a device for detecting a linear optical image of the document to obtain the density distribution of the linear optical image; a device for scanning the criterion member and a document in the subscan direction which includes a device that illuminates a document placed on a document area of the platen and the criterion member; and a device for determining a reference timing for starting a scan of the document on the platen, which is connected to the device that detects a linear optical image so as to detect a boundary between the black and white regions and determine the reference timing from the boundary detected.

    Abstract translation: 一种扫描装置，包括：可在其上放置文件的压板; 标准构件，其中至少一个黑色区域和至少一个白色区域在副扫描方向上连续形成，标准构件布置在平台的靠近一侧开始扫描的一侧; 用于检测文档的线性光学图像以获得线性光学图像的密度分布的装置; 用于扫描标准构件的装置和沿副扫描方向的文件，其包括照亮放置在压板的原稿区域上的文件和标准构件的装置; 以及用于确定用于开始对压板上的文档的扫描的参考定时的装置，其连接到检​​测线性光学图像的装置，以便检测黑色和白色区域之间的边界，并从 检测到边界。

    Slow scan registration self alignment system for raster input scanners
    29.
    发明授权
    Slow scan registration self alignment system for raster input scanners 失效
    慢扫描注册自动对准系统，用于光栅输入扫描仪

    公开(公告)号：US4864415A

    公开(公告)日：1989-09-05

    申请号：US190184

    申请日：1988-05-04

    Applicant: Thomas R. Beikirch ,  Gregory E. Bell

    Inventor： Thomas R. Beikirch ,  Gregory E. Bell

    IPC: H04N1/047 ,  H04N1/10 ,  H04N1/193

    CPC classification number: H04N1/32448 ,  H04N1/0473 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/0471 ,  H04N2201/04786 ,  H04N2201/329

    Abstract: A system for self-aligning a raster input scanner in the slow scan direction where, at start of scan, a target having a variable density image is scanned first until a preset target image line is obtained and the position of the scan carriage registered; then from the registered position, the platen is scanned through a predetermined number of scan lines; following this, the carriage is reversed and returned the same number of scan lines where the target is again scanned and the target image line obtained compared with the previous target image line to determined if a valid scan cycle has taken place.

    Abstract translation: 一种用于在慢扫描方向上自动对准光栅输入扫描器的系统，其中扫描开始时具有可变浓度图像的目标被首先扫描直到获得预设的目标图像线并且记录扫描架的位置; 然后从注册位置，通过预定数量的扫描线扫描压板; 随后，滑架反转，返回相同数目的扫描线，其中再次扫描目标，并获得与先前目标图像行相比获得的目标图像行，以确定是否发生了有效的扫描周期。

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