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1.发明授权Method and apparatus for detecting paper skew in image and document scanning devices 失效用于检测图像和文档扫描装置中纸张偏斜的方法和装置
公开(公告)号：US5912448A
公开(公告)日：1999-06-15
申请号：US857613
申请日：1997-05-16
CPC分类号： H04N1/00718 , H04N1/00681 , H04N1/0074 , H04N1/00745 , H04N1/00771 , H04N1/00777
摘要： A method and apparatus for determining the extent of skew present in a document being scanned using only the primary vision transducer. The primary vision transducer is wider than the width of the media to be scanned and logically divided into a central image gathering portion and marginal skew detection and image gathering portions.
摘要翻译： 一种用于确定仅使用主视觉传感器扫描的文档中存在的偏斜程度的方法和装置。 主视觉传感器比待扫描的介质的宽度宽，并且在逻辑上分为中心图像采集部分和边缘偏斜检测和图像采集部分。
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公开(公告)号：US4314096A
公开(公告)日：1982-02-02
申请号：US181294
申请日：1980-08-25
CPC分类号： G06F3/044
摘要： A digitizer propagates coarse and fine wavelength electric fields across a platen to perform phase delay measurements, the results of which correspond to a displacement of a cursor along a measurement axis. The time interval between propagating the longer wavelength coarse electric field at a high velocity and subsequently establishing and propagating a shorter wavelength fine electric field at a low velocity is minimized by pre-loading at high speed a propagation circuit with the pattern to be propagated as the shorter wavelength fine electric field.
摘要翻译： 数字转换器将粗波和细波长的电场传播到压板上，以执行相位延迟测量，其结果对应于光标沿着测量轴的位移。 以较高的速度传播较长波长的粗糙电场之间的时间间隔，随后以较低的速度建立和传播较短波长的精细电场的时间间隔通过预先加载传播电路而以高速传播的图案被最小化 较短波长的精细电场。
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公开(公告)号：US06266048B1
公开(公告)日：2001-07-24
申请号：US09141400
申请日：1998-08-27
申请人： Frank P. Carau, Sr.
发明人： Frank P. Carau, Sr.
IPC分类号： G09G508
CPC分类号： G06F1/1613 , G06F1/1639 , G06F1/1673 , G06F3/0238 , G06F3/0421 , G06F3/04886
摘要： An improved computer or PDA with a projected display onto a substantially flat, white surface to create a virtual computer screen display and a projected keyboard onto the substantially flat, white surface and a laser sensor projected over the keyboard and parallel to the substantially flat, white surface to create a virtual keyboard. The virtual display and virtual keyboard permit the computer or PDA to be substantially smaller than typical computers or PDA's, while also permitting a relatively normal size display and keyboard/user input area.
摘要翻译： 一种改进的计算机或PDA，其具有投影显示在基本上平坦的白色表面上，以在虚拟计算机屏幕显示器上投射键盘，并将投影键盘投射到基本上平坦的白色表面上，并且激光传感器投射在键盘上并平行于基本平坦的白色 表面创建虚拟键盘。 虚拟显示器和虚拟键盘允许计算机或PDA比典型的计算机或PDA小得多，同时还允许相对正常的尺寸显示和键盘/用户输入区域。
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公开(公告)号：US06318825B1
公开(公告)日：2001-11-20
申请号：US09177399
申请日：1998-10-23
申请人： Frank P. Carau, Sr.
发明人： Frank P. Carau, Sr.
IPC分类号： B11J201
CPC分类号： H04N1/1043 , H04N1/00204 , H04N1/0461 , H04N1/1017 , H04N1/193 , H04N2201/0086 , H04N2201/0096 , H04N2201/0438 , H04N2201/0471 , H04N2201/04731 , H04N2201/04732 , H04N2201/04737
摘要： A device for electronically capturing an image on a whiteboard, storing the image and then putting the captured image back onto the whiteboard using dry erase ink in an inkjet printhead array. The image capture portion of the device may include an image capture array that is a whiteboard-wide-array of image capture elements. The image replace portion of the device may include a whiteboard-wide-array of inkjet printhead elements. The data storage portion of the device may either be on the device or off of the device or both. The device may also be capable of interactive whiteboard image manipulation from a remote location via the Internet, telecommunications, facsimile, infrared, modem, or other known electronic data transmission means.
摘要翻译： 一种用于在白板上电子捕获图像的装置，存储图像，然后使用喷墨打印头阵列中的干擦墨将所捕获的图像放回到白板上。 设备的图像捕获部分可以包括作为图像捕获元件的白板宽阵列的图像捕获阵列。 设备的图像替换部分可以包括白板宽阵列的喷墨打印头元件。 设备的数据存储部分可以在设备上，也可以在设备上，或者两者都在设备上。 该设备还可以能够经由因特网，电信，传真，红外线，调制解调器或其他已知的电子数据传输装置从远程位置进行交互式白板图像操作。
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公开(公告)号：US5646402A
公开(公告)日：1997-07-08
申请号：US523700
申请日：1995-09-05
CPC分类号： H04N1/1077 , H04N1/107 , H04N1/1934 , H04N1/193 , H04N2201/043 , H04N2201/045
摘要： The hand-held scanning device is adjustable between a compact transport configuration and a relatively larger use configuration. In its compact transport configuration, the hand-held scanning device can conveniently be carried, for example, in a shirt pocket. In its use configuration, however, the device is capable of scanning a relatively large object. The hand-held scanning device may be constructed of two housing portions that slide or pivot relatively to one another to provide for this adjustment.
摘要翻译： 手持式扫描装置可在紧凑的运输配置和相对较大的使用配置之间调节。 在紧凑的输送结构中，手持扫描装置可以方便地携带在例如衬衫口袋中。 然而，在其使用配置中，该设备能够扫描相对较大的对象。 手持式扫描装置可以由相对于彼此滑动或枢转以提供该调整的两个壳体部分构成。
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公开(公告)号：US4255617A
公开(公告)日：1981-03-10
申请号：US069956
申请日：1979-08-27
CPC分类号： G06F3/044
摘要： A digitizer shifts long and short wavelength square waves across x and y grids in a platen to perform upon a cursor signal time measurements that represent coarse and fine cursor position data. The periodic staircase cursor signal is filtered before use to permit time measurements that resolve cursor positions to locations between lines in the grids. The contribution of the filter to the coarse and fine time measurements is obtained in a special reference measurement, so that it may be removed. A processor combines these data into Cartesian coordinates, and implements procedures for error reduction. These include averaging of consecutive time measurements, dynamic adjustment of a timing reference to remove ambiguities inherent in measuring very small or very large cyclic quantities, and correction of coordinates for the effects of cursor motion during measurement and for any non-perpendicularity of the x and y grids.
摘要翻译： 数字转换器在平台上的x和y格栅上移动长波长和短波长的方波，以执行表示粗略和精细光标位置数据的光标信号时间测量。 周期性阶梯光标信号在使用前进行过滤，以允许将光标位置解析为网格线间的位置的时间测量。 过滤器对粗调和精细时间测量的贡献在特殊的参考测量中获得，从而可以去除它。 处理器将这些数据组合成笛卡尔坐标，并实现减少误差的程序。 这些包括连续时间测量的平均，定时参考的动态调整，以消除测量非常小或非常大的循环量所固有的模糊度，以及校正测量过程中光标运动的影响以及x和x的任何非垂直度 y网格
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