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21.发明授权Apparatus and method for modulating image signals in a high addressability printing machine 失效用于在高可寻址性打印机中调制图像信号的装置和方法
公开(公告)号：US5606648A
公开(公告)日：1997-02-25
申请号：US352404
申请日：1994-12-08
CPC分类号： H04N1/4056
摘要： A printing system is provided for printing an image on a substrate. The image is represented by a set of words with each word including M bits and being modulated so as to produce a single bit stream. The printing system includes a multi-phase clock generator, responsive to a clock signal with a first clock rate, for producing N phase signals and a data serializer, communicating with the multi-phase clock generator, for receiving the N phase signals and the word set. In operation, the data serializer processes each word of the word set, with the N phase signals, to produce the single bit stream, the single bit stream being outputted at a second clock rate with the second clock rate being greater than the first clock rate. The data serializer communicates with a print engine, the print engine receiving the single bit stream for imaging the image on the substrate.
摘要翻译： 提供了一种用于在基板上打印图像的打印系统。 图像由一组单词表示，每个单词包括M位并被调制以产生单个比特流。 打印系统包括多相时钟发生器，响应于具有第一时钟速率的时钟信号，用于产生N相信号和与多相时钟发生器通信的数据串行器，用于接收N相信号和字 组。 在操作中，数据串行器利用N相信号处理字集合的每个字以产生单个比特流，该单个比特流以第二时钟速率被输出，第二时钟速率大于第一时钟速率 。 数据串行器与打印引擎通信，打印引擎接收用于对基板上的图像进行成像的单个位流。
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22.发明授权
公开(公告)号：US5513282A
公开(公告)日：1996-04-30
申请号：US430116
申请日：1995-04-27
申请人： Leon C. Williams
发明人： Leon C. Williams
IPC分类号： B41J21/00 , G06T1/00 , G06T3/00 , G06T5/00 , G06T7/00 , G09G5/14 , H04N1/40 , G06K9/54 , G06K9/34 , H04N1/387
摘要： A method and apparatus for controlling the execution of image processing operations carried out on an array of image signals, the specific operations having been identified by a plurality of predefined windows. The windows are divided into a plurality of regions, the boundaries of which correspond to transitions from one window region to another. Each region defines an exclusive region within the array of image signals, and the image processing operations to be applied to the signals within the boundaries of that region. The image processing operations are selected by decoding an effect data word that is assigned to each pixel and which follows the pixel along the image processing path. The bits within the effect data word are not assigned individual significance which allows the effect data word, in most cases, to maintain the same bit length even though additional image processing procedures or modules have been added to the image processing path. The apparatus is designed to efficiently manage the identification of regions while minimizing the bit length of the effect data word used to identify the image processing steps. The apparatus also provides flexibility of architecture design resulting in more efficient expansion of functions and easier modifications to existing functions.
摘要翻译： 一种用于控制对图像信号阵列执行的图像处理操作的执行的方法和装置，该特定操作已经被多个预定窗口识别。 窗口被分成多个区域，其边界对应于从一个窗口区域到另一个窗口区域的过渡。 每个区域在图像信号阵列内定义排他区域，并且将图像处理操作应用于该区域边界内的信号。 通过对分配给每个像素的效果数据字进行解码并沿着图像处理路径跟随像素来选择图像处理操作。 影响数据字中的位不被分配单独的显着性，即使在图像处理路径中附加了附加的图像处理过程或模块的情况下，也能够使效果数据字在大多数情况下保持相同的位长度。 该设备被设计为有效地管理区域的识别，同时最小化用于识别图像处理步骤的效果数据字的位长度。 该设备还提供架构设计的灵活性，从而更有效地扩展功能并更容易地修改现有功能。
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公开(公告)号：US4757389A
公开(公告)日：1988-07-12
申请号：US61745
申请日：1987-06-15
申请人： Raymond J. Clark , Leon C. Williams
发明人： Raymond J. Clark , Leon C. Williams
CPC分类号： H04N1/401
摘要： A raster input scanner in which a dither generator introduces a random error signal to artificially increase the calibration signal accuracy during calibration of the scanner.
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公开(公告)号：US4755813A
公开(公告)日：1988-07-05
申请号：US61749
申请日：1987-06-15
申请人： Leon C. Williams
发明人： Leon C. Williams
CPC分类号： G06T1/60 , H04N1/4055
摘要： A programmable screening circuit with memory for storing at each address location both a pixel screen value and the memory address of the screen value for the next pixel to be screened, and a control including a latch pair for separating data from each memory location addressed into a screen value for screening the pixel and an address for addressing the memory location for the next screen value.
摘要翻译： 一种具有存储器的可编程屏蔽电路，用于在每个地址位置处存储要屏蔽的下一个像素的像素屏幕值和屏幕值的存储器地址，以及包括用于将数据从每个存储器位置分离的锁存器对的控制， 用于筛选像素的屏幕值和用于寻址下一屏幕值的存储器位置的地址。
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公开(公告)号：US07058350B2
公开(公告)日：2006-06-06
申请号：US09683536
申请日：2002-01-16
申请人： Bing R. Hsieh , Ying-wei Lin , Leon C. Williams
发明人： Bing R. Hsieh , Ying-wei Lin , Leon C. Williams
IPC分类号： G03G15/00
CPC分类号： H04N1/00551 , H04N1/00519
摘要： A platen cover for an imaging device such as a copier or scanner includes a substrate and at least of portion of the surface of the substrate is coated with a fluorescent coating. Preferably, the substrate has a dark or black color. The dark color of the substrate substantially reduces or eliminates show through of an image on the backside of an original document when the platen cover is not exposed to a light source for imaging. At the same time, when holes or uneven borders are present in the original document, the fluorescent coating fluoresces upon exposure to the light source at these regions of the original document, making these portions appear white in the replicated image and thereby substantially reducing or eliminating the unsightly appearance of these portions as black portions in the replicated image.
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公开(公告)号：US06608701B1
公开(公告)日：2003-08-19
申请号：US09348378
申请日：1999-07-07
申请人： Robert P. Loce , Michael Branciforte , Fritz F. Ebner , Douglas N. Curry , Yeqing Zhang , Leon C. Williams
发明人： Robert P. Loce , Michael Branciforte , Fritz F. Ebner , Douglas N. Curry , Yeqing Zhang , Leon C. Williams
IPC分类号： G06K936
CPC分类号： H04N1/4052 , H04N1/4056
摘要： A compact rendering processor for processing image data including a multi-bit halftone region generates high addressability pixels. The compact rendering processor includes a tagging sub-processor operating on the image data to identify a target pixel and a neighboring pixel to determine a fill-order. The compact rendering processor also includes a rendering sub-processor that converts the target pixel into a high addressability pixel based upon the fill-order. Optionally, a diffusion sub-processor can be included to diffuse an error resulting from the conversion of the target pixel into a high addressability pixel to other pixels within the image data.
摘要翻译： 用于处理包括多位半色调区域的图像数据的紧凑渲染处理器产生高可寻址性像素。 紧凑渲染处理器包括对图像数据进行操作的标记子处理器，以识别目标像素和相邻像素以确定填充顺序。 紧凑渲染处理器还包括渲染子处理器，其基于填充顺序将目标像素转换为高可寻址性像素。 可选地，可以包括扩散子处理器以将由目标像素转换成高可寻址性像素所产生的误差扩散到图像数据内的其他像素。
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27.发明授权公开(公告)号：US06427030B1
公开(公告)日：2002-07-30
申请号：US08285324
申请日：1994-08-03
IPC分类号： G06K946
CPC分类号： H04N1/4053
摘要： A method and system implements a dynamic error diffusion process. A grey level value representing a pixel is received. An image segmentation circuit determines an image characteristic of the pixel being processed. A threshold circuit thresholds the grey level value (pixel) and generates an error value as a result of the threshold process. A portion of the error value is diffused to adjacent pixels on a next scanline. The distribution of this error value is dynamic in that different sets of weighting coefficients are used based the image characteristic of the processed pixel. One set of coefficients are utilized in processing a pixel having a first image characteristic, and a second set of coefficients are utilized in processing a pixel having a second image characteristic.
摘要翻译： 一种方法和系统实现了动态误差扩散过程。 接收表示像素的灰度值。 图像分割电路确定正在处理的像素的图像特性。 阈值电路对灰度值（像素）进行阈值，并作为阈值处理的结果产生误差值。 错误值的一部分扩散到下一个扫描线上的相邻像素。 基于经处理的像素的图像特性，使用不同的加权系数集合，该误差值的分布是动态的。 一组系数用于处理具有第一图像特性的像素，并且第二组系数被用于处理具有第二图像特性的像素。
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28.发明授权公开(公告)号：US06252680B1
公开(公告)日：2001-06-26
申请号：US09004351
申请日：1998-01-08
IPC分类号： H04N138
CPC分类号： H04N1/409 , H04N1/38 , H04N1/4097
摘要： A system and method which enables the location and orientation of an image to be determined without introducing scanning artifacts into the rendered image. The system utilizes a separate set of sensors on a scanning bar that are sensitive to a wavelength of light outside the range of wavelengths of the typical sensors found on the scanning bar, such as red, green, or blue. Moreover, the system includes a light source which is capable of emitting the wavelength of light that is outside this range of wavelength of light. Thus, whenever the additional set of sensors detect light, the system would determine that the light was due to a scanning artifact, such as a hole, rip, or dog ear in the original document being scanned. Furthermore, the system would include a process which measures the variations of the image signal in the fastscan and slowscan directions, as well as, the gray level of the video signal from these various measurements, the system would develop a cost value as to the certainty as whether the signal represents a scanning artifact. In such a system, the backing or cover would be embedded with a pattern which would have a predetermined variation in a fastscan direction but have little or no variation in a slowscan direction.
摘要翻译： 一种使得能够确定图像的位置和方位而不将扫描伪影引入到渲染图像中的系统和方法。 该系统在扫描杆上使用对扫描条上发现的典型传感器波长范围（例如红色，绿色或蓝色）的波长波长敏感的扫描条上的一组单独的传感器。 此外，该系统包括能够发射在该波长范围之外的光的波长的光源。 因此，每当附加的传感器组检测到光时，系统将确定光是由于扫描原件造成的，例如正在扫描的原稿中的孔，裂纹或狗耳等扫描伪影。 此外，该系统将包括测量图像信号在快扫和慢扫描方向上的变化的过程以及来自这些各种测量的视频信号的灰度级，系统将产生关于确定性的成本值 作为信号是否表示扫描伪像。 在这种系统中，背衬或盖子将嵌入一种图案，该图案将在快速扫描方向上具有预定的变化，但在慢扫描方向上几乎没有或没有变化。
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29.发明授权公开(公告)号：US06181829B2
公开(公告)日：2001-01-30
申请号：US09010331
申请日：1998-01-21
IPC分类号： G06K940
CPC分类号： H04N1/40062
摘要： A system and method classify a pixel of image data as one of a plurality of image types. A first image characteristic value for the pixel, a second image characteristic value for the pixel ,a third image characteristic value for the pixel, and a fourth image characteristic for the pixel is determined. Some of these determinations may be resolution dependent. The values from these determination are utilized in assigning an image type classification to the pixel. Moreover, if at least one of the image characteristic values is greater than a predetermined threshold value the pixel is classified as a halftone peak value. The system includes a plurality of microclassifiers for determining a distinct image characteristic value of the pixel; a plurality of macroreduction circuits connected to the plurality of microclassifiers for performing further higher level operations upon the distinct image characteristic values of the pixel to produce reduced values; and a classification circuit to classify the pixel as an image type based on the reduced values from the macroreduction circuits. The system also includes a circuit to detect flat peaks without detecting multiple peaks and a rectangular blur filtering system.
摘要翻译： 系统和方法将图像数据的像素分类为多个图像类型之一。 确定像素的第一图像特征值，像素的第二图像特征值，像素的第三图像特征值和用于像素的第四图像特性。 这些确定中的一些可能取决于分辨率。 来自这些确定的值被用于为像素分配图像类型分类。 此外，如果图像特征值中的至少一个大于预定阈值，则将像素分类为半色调峰值。 该系统包括用于确定像素的不同图像特征值的多个微分类器; 连接到所述多个微分类器的多个宏观还原电路，用于根据所述像素的不同图像特征值进行更高级的操作以产生减小的值; 以及分类电路，用于基于来自大致减小电路的减小值将像素分类为图像类型。 该系统还包括用于检测平坦峰而不检测多个峰的电路和矩形模糊滤波系统。
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30.发明授权
公开(公告)号：US06122393A
公开(公告)日：2000-09-19
申请号：US4186
申请日：1998-01-08
CPC分类号： H04N1/409 , H04N1/38 , H04N1/4097
摘要： A system and method which enables the location and orientation of an image to be determined without introducing scanning artifacts into the rendered image. The system utilizes a separate set of sensors on a scanning bar that are sensitive to a wavelength of light outside the range of wavelengths of the typical sensors found on the scanning bar, such as red, green, or blue. Moreover, the system includes a light source which is capable of emitting the wavelength of light that is outside this range of wavelength of light. Thus, whenever the additional set of sensors detect light, the system would determine that the light was due to a scanning artifact, such as a hole, rip, or dog ear in the original document being scanned. Furthermore, the system would include a process which measures the variations of the image signal in the fastscan and slowscan directions, as well as, the gray level of the video signal from these various measurements, the system would develop a cost value as to the certainty as whether the signal represents a scanning artifact. In such a system, the backing would be embedded with a pattern which would have a predetermined variation in a fastscan direction but have little or no variation in a slowscan direction.
摘要翻译： 一种使得能够确定图像的位置和方位而不将扫描伪影引入到渲染图像中的系统和方法。 该系统在扫描杆上使用对扫描条上发现的典型传感器波长范围（例如红色，绿色或蓝色）的波长波长敏感的扫描条上的一组单独的传感器。 此外，该系统包括能够发射在该波长范围之外的光的波长的光源。 因此，每当附加的传感器组检测到光时，系统将确定光是由于扫描原件造成的，例如正在扫描的原稿中的孔，裂纹或狗耳等扫描伪影。 此外，该系统将包括测量图像信号在快扫和慢扫描方向上的变化的过程以及来自这些各种测量的视频信号的灰度级，系统将产生关于确定性的成本值 作为信号是否表示扫描伪像。 在这样的系统中，背衬将被嵌入具有在快扫方向上具有预定变化但在慢扫描方向上几乎没有或没有变化的图案。
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