公开(公告)号：US5479587A

公开(公告)日：1995-12-26

申请号：US940111

申请日：1992-09-03

申请人： Russ Campbell ,  Gary Zimmerman ,  Thomas G. Berge ,  Terry M. Nelson

发明人： Russ Campbell ,  Gary Zimmerman ,  Thomas G. Berge ,  Terry M. Nelson

IPC分类号： B41J2/485 ,  B41J5/30 ,  G06F3/12 ,  G06K15/00 ,  G06T9/00 ,  H03M7/30 ,  H03M7/48 ,  H04N1/21 ,  H04N1/41 ,  H04N1/411 ,  H04N1/413 ,  H04N1/419

CPC分类号： G06T9/005 ,  G06K15/00 ,  H03M7/30 ,  H03M7/3088 ,  H03M7/48 ,  G06K2215/0031 ,  G06K2215/0071

摘要： A peripheral unit converts an input data flow to page-arranged outputs and includes a random access memory capacity that is insufficient in size to accommodate an entire page of raster data. The peripheral unit also includes a processor and a control memory that holds a plurality of data compression procedures, each procedure exhibiting a different performance characteristic. The peripheral unit performs a method for compressing portions of the input data flow that includes the steps of: allocating the random access memory to portions of the input data flow; determining when an insufficient amount of random access memory is available for such allocation; employing a first data compression procedure on the input data flow portions to produce a compressed data portion; testing the compressed data portion to determine if a level of compression has been achieved that exceeds a threshold and, if not, employing succeeding data compression procedures and repeating the test for each procedure against a threshold, whereby the compression procedure that first enables a threshold level of compression to be achieved is the compression procedure employed to compress the data flow portion. Improved compression methods and techniques for handling input data flows with both integral and independent image descriptors are also described.

摘要翻译： 外围单元将输入数据流转换为页面排列的输出，并且包括尺寸不足以容纳整个栅格数据页面的随机存取存储器容量。 外围单元还包括处理器和控制存储器，其保存多个数据压缩过程，每个过程表现出不同的性能特征。 外围单元执行压缩输入数据流的部分的方法，包括以下步骤：将随机存取存储器分配给输入数据流的部分; 确定随机存取存储器的数量不足可用于这种分配; 对输入数据流部分采用第一数据压缩过程以产生压缩数据部分; 测试压缩数据部分以确定是否已经实现超过阈值的压缩级别，以及如果不是采用后续的数据压缩过程并针对阈值重复针对每个过程的测试，由此首先启用阈值级别的压缩过程 要实现的压缩是用于压缩数据流部分的压缩程序。 还描述了用于处理具有积分和独立图像描述符的输入数据流的改进的压缩方法和技术。

公开(公告)号：US06829061B1

公开(公告)日：2004-12-07

申请号：US09502412

申请日：2000-02-10

申请人： Steve A. Jacob ,  George H. Kerby ,  Terry M. Nelson

发明人： Steve A. Jacob ,  George H. Kerby ,  Terry M. Nelson

IPC分类号： G06F1500

CPC分类号： H04N1/40012

摘要： The method of the invention converts colors resident in a first device color space to gray levels for reproduction by a single color marking media in a color or monochrome rendering device. The method converts a set of red, green and blue (RGB) primary color values received from a processor to gray level values. The method applies a gamma correction function to the RGB primary color values and further scales the values to a range of from 0 to 1. The method then converts the gamma-corrected and scaled RGB primary color values to a Y luminance value (in the XYZ tristimulus color space) through use of the expression: Y=YR(R)+(YG−kG)(G)+(YB+kB)(B) where: YR, YG, and YB are coefficients that provide a luminance value in the XYZ color space in accordance with accepted observer standards; kG is a correction value that renders the green component darker; and kB is a correction value that renders lighter the blue component. The resulting luminance value is then converted to a device gray value and stored in a table for later use.

摘要翻译： 本发明的方法将驻留在第一设备颜色空间中的颜色转换成灰度级，以便通过彩色或单色渲染设备中的单个颜色标记介质进行再现。 该方法将从处理器接收的一组红色，绿色和蓝色（RGB）原色值转换为灰度值。 该方法将伽马校正功能应用于RGB原色值，并进一步将值缩放到从0到1的范围。该方法然后将伽马校正和缩放的RGB原色值转换为Y亮度值（在XYZ中 三色刺激色彩空间），其中：YR，YG和YB是根据接受的观察者标准在XYZ色空间中提供亮度值的系数; kG是使绿色分量变暗的校正值; 并且kB是使蓝色分量更亮的校正值。 然后将得到的亮度值转换为设备灰度值并存储在表中供以后使用。

公开(公告)号：US5618633A

公开(公告)日：1997-04-08

申请号：US274171

申请日：1994-07-12

申请人： Roger A. Swanson ,  Terry M. Nelson ,  James R. Barrett ,  Laxmappa Hosamani

发明人： Roger A. Swanson ,  Terry M. Nelson ,  James R. Barrett ,  Laxmappa Hosamani

IPC分类号： B22C9/04 ,  B22D25/02 ,  B32B3/12 ,  E04C2/30

CPC分类号： B22D25/02 ,  B22C9/04 ,  Y10T428/1234

摘要： A metal article, at least a portion of which has a honeycomb structure, is described. The article was produced by an investment casting process. The metal casting comprises a base and plural walls which form a honeycomb structure that project outwardly in a first direction from at least a portion of the base. The base typically has a thickness of about 5 mm or less. The honeycomb structure may be defined by plural cells having geometric shapes. For instance, plural interconnected regular polygons, such as plural interconnected pentagons or hexagons, plural irregular interconnected polygons, or plural regular and irregular interconnected polygons may be used. The maximum distance between any two points on the periphery of the cell and passing through the interior space defined by the geometric shape is about 40 mm. The walls of the casting may have a wall thickness of from about 0.3 mm to about 3.2 mm thick. The method for forming the metal casting comprises first forming a pattern having a base, preferably with a thickness of 5 mm or less, and plural walls that extend upwardly from the base and define a honeycomb structure. A mold is formed around the pattern by surrounding the pattern with a refractory material. The pattern is then removed to form a void within the mold in the shape of the pattern. The void is then filled with a molten metal composition. The metal composition is allowed to solidify in the shape of the desired article, and the mold is then removed.

摘要翻译： 描述了至少一部分具有蜂窝结构的金属制品。 该文章是通过投资流程制作的。 金属铸件包括基部和多个壁，其形成蜂窝结构，其从基部的至少一部分沿第一方向向外突出。 基部通常具有约5mm或更小的厚度。 蜂窝结构可以由具有几何形状的多个单元限定。 例如，可以使用多个互连的正多边形，例如多个互连的五边形或六边形，多个不规则互连的多边形，或多个规则和不规则的互连的多边形。 细胞周边的任何两个点之间的距离通过由几何形状限定的内部空间的最大距离约为40mm。 铸件的壁可具有约0.3mm至约3.2mm厚的壁厚。 用于形成金属铸件的方法包括首先形成具有基部的图案，优选地具有5mm或更小的厚度，以及从基部向上延伸并限定蜂窝结构的多个壁。 通过用耐火材料包围图案在模具周围形成模具。 然后去除图案以在模具中形成为图案形状的空隙。 然后用熔融金属组合物填充空隙。 允许金属组合物以所需制品的形状固化，然后除去模具。

公开(公告)号：US08576465B2

公开(公告)日：2013-11-05

申请号：US11895781

申请日：2007-08-27

申请人： Terry M. Nelson ,  Mark Shaw

发明人： Terry M. Nelson ,  Mark Shaw

IPC分类号： H04N1/46

CPC分类号： H04N1/00002 ,  H04N1/00015 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00055 ,  H04N1/00087 ,  H04N1/0009

摘要： A method of calibrating a printing device includes storing current calibration data in the printing device; and modifying each incoming print job using the calibration data stored in the printing device. A printing device having a calibration function includes a memory storing current calibration data in the printing device; and an operator, executed by the printing device, configured to modify each incoming print job using the calibration data stored in the printing device.

公开(公告)号：US4930018A

公开(公告)日：1990-05-29

申请号：US278881

申请日：1988-12-02

申请人： C. S. Chan ,  James G. Bearss ,  Terry M. Nelson

发明人： C. S. Chan ,  James G. Bearss ,  Terry M. Nelson

IPC分类号： B41J2/21 ,  B41J2/205 ,  G06K15/10 ,  H04N1/23 ,  H04N1/40 ,  H04N1/52

CPC分类号： H04N1/52 ,  G06K15/102 ,  H04N1/40087 ,  B41J2/2128 ,  G06K2215/0094

摘要： A method for reducing "grainyness" or color contrast in color imaging systems and simultaneously reducing or eliminating paper cockleing of media printed by ink jet printing. The method involves determining the maximum allowable ink print density necessary to reduce or eliminate paper cockleing in the printed media and then providing tight control of the selection of gray scale ink drop count and associated dye loading in relation to this maximum allowable print density. Using this method, pixels are selected and printed in such a manner as to maximize the uniformity of ink distribution on the printed media.This method will work using either a variable drop size or a fixed drop size with variable dye loadings. It will also work with most error diffusion or dithering schemes presently used and available in the image processing arts.

公开(公告)号：US5987221A

公开(公告)日：1999-11-16

申请号：US788768

申请日：1997-01-24

申请人： James G Bearss ,  Eugene A Roylance ,  Terry M. Nelson ,  Arlin R Jones

发明人： James G Bearss ,  Eugene A Roylance ,  Terry M. Nelson ,  Arlin R Jones

IPC分类号： B41J2/52 ,  B41J21/00 ,  G06F3/12 ,  G06T5/00 ,  H04N1/40 ,  H04N1/405 ,  H04N1/409 ,  G06K9/34 ,  G06K9/44 ,  G06K15/02

CPC分类号： H04N1/40062

摘要： Text and line art image data is distinguished from halftone image data for selectively enhanced rendering thereof. Specifically, a method of rendering a raster pixel image from a stored bitmap includes (i) determining whether an orphan pixel is detected within a bounded sampling window of the bitmap, and, (ii) processing at least one selected pixel of the bitmap within the sampling window relative to the determining of whether an orphan pixel is detected. In general, an orphan pixel is defined as an isolated white or black pixel in a halftone image. In one embodiment, an orphan pixel is recognized as having a predefined pixel value and as having no other pixels with that value adjacent thereto within the sampling window. In the event an orphan pixel is detected within the window, then the bitmap within the window is determined to be halftone image data and the selected pixel is processed accordingly. In the event an orphan pixel does not exist within the window, then the bitmap within the window is recognized as text or line art image data and processed respectively. In addition, a method of forming a dither matrix for a halftone image includes generating a pixel pattern such that an orphan pixel exists within the pattern of the dither matrix. The orphan pixel is designed into the halftone image. This measure increases the probability that orphan pixels will exist and be detected in the resultant raster image array. Thus, during subsequent rendering of the raster pixel image, selective application of resolution enhancement techniques may occur based on whether or not an orphan pixel is detected in the sampling window.

摘要翻译： 文本和线条艺术图像数据与半色调图像数据区分开，以便选择性地增强其再现。 具体来说，从存储的位图中渲染光栅像素图像的方法包括（i）确定在位图的有界采样窗口内是否检测到孤立像素，以及（ii）处理位图内的位图的至少一个选定像素 相对于确定是否检测到孤立像素的采样窗口。 通常，孤立像素被定义为半色调图像中的孤立的白色或黑色像素。 在一个实施例中，孤立像素被识别为具有预定义的像素值，并且在采样窗口内不具有与其相邻的值的其它像素。 在窗口内检测到孤立像素的情况下，窗口内的位图被确定为半色调图像数据，并且相应地处理所选择的像素。 在窗口内不存在孤立像素的情况下，窗口内的位图被识别为文本或线条图像数据并被分别处理。 此外，形成半色调图像的抖动矩阵的方法包括生成像素图案，使得孤立像素存在于抖动矩阵的图案内。 孤立像素被设计成半色调图像。 这种措施增加了孤立像素将存在并在最终的光栅图像阵列中被检测的可能性。 因此，在随后渲染光栅像素图像期间，基于在采样窗口中是否检测到孤立像素可以选择性地应用分辨率增强技术。

公开(公告)号：US5111302A

公开(公告)日：1992-05-05

申请号：US515946

申请日：1990-04-27

申请人： C. S. Chan ,  James G. Bearss ,  Terry M. Nelson

发明人： C. S. Chan ,  James G. Bearss ,  Terry M. Nelson

IPC分类号： H04N1/23 ,  H04N1/40 ,  H04N1/405 ,  H04N1/46 ,  H04N1/52

CPC分类号： H04N1/40087 ,  H04N1/4057 ,  H04N1/52 ,  B41J2/2128

摘要： A method of gray scale printing of dots of one or more colors into pixels and in a controlled ordered sequence into a plurality of super pixels defined by a given number of said pixels, characterized in that: one or more levels of dot loading are used to achieve different values of gray level in a multiple-level gray table. This generic method is applicable to both ink jet and electrophotographic printing species of this invention.In one electrophotograpic printing species of this invention, there is disclosed a method of electrophotographic color printing which includes mixing a plurality of colors in a single plane and in dot-next-to-dot (DND) pixels within a plurality of super pixels to produce a color image, whereby the sum of the multi-color dots printed in any super pixel is limited to the number of subdivided individual pixels therein, thereby assuring dot-next-to-dot (DND) always printing of said colors in a single plane. The above method further includes varying the area of each printed color dot within each pixel of a super pixel in order to control the gray scale of a printed color image.Gray scale printing is achieved by controlling the selection of a gray table entry level number representative of one of several available entry level numbers corresponding to a plurality of different dot loadings for a corresponding plurality of differently printed super pixels.

摘要翻译： 一种将一种或多种颜色的点的灰度级打印成像素并以受控的有序序列分成由给定数量的所述像素定义的多个超像素的方法，其特征在于：使用一个或多个点加载级别 在多级灰度表中实现灰度级的不同值。 该通用方法适用于本发明的喷墨和电子照相印刷品种。 在本发明的一种电子照相印刷品种中，公开了一种电子照相彩色印刷方法，其包括在多个超像素内的单个平面和点下一点（DND）像素中混合多种颜色以产生 彩色图像，其中打印在任何超级像素中的多色点的总和被限制在其中的细分个别像素的数量，从而确保点到点（DND）总是在单个平面中打印所述颜色 。 上述方法还包括改变超像素的每个像素内的每个打印色点的面积，以便控制打印的彩色图像的灰度。 通过控制代表对应于多个不同打印的超像素的多个不同点加载的多个可用入口级编号之一的灰度表入口级数的选择来实现灰度级打印。

公开(公告)号：US20090059311A1

公开(公告)日：2009-03-05

申请号：US11895781

申请日：2007-08-27

申请人： Terry M. Nelson ,  Mark Shaw

发明人： Terry M. Nelson ,  Mark Shaw

IPC分类号： H04N1/00

CPC分类号： H04N1/00002 ,  H04N1/00015 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00055 ,  H04N1/00087 ,  H04N1/0009

摘要： A method of calibrating a printing device includes storing current calibration data in the printing device; and modifying each incoming print job using the calibration data stored in the printing device. A printing device having a calibration function includes a memory storing current calibration data in the printing device; and an operator, executed by the printing device, configured to modify each incoming print job using the calibration data stored in the printing device.

摘要翻译： 校准打印装置的方法包括将当前校准数据存储在打印装置中; 以及使用存储在打印设备中的校准数据修改每个传入的打印作业。 具有校准功能的打印装置包括存储打印装置中的当前校准数据的存储器; 以及由打印装置执行的操作者被配置为使用存储在打印装置中的校准数据来修改每个进入的打印作业。

公开(公告)号：US4812859A

公开(公告)日：1989-03-14

申请号：US98840

申请日：1987-09-17

申请人： C. S. Chan ,  Gary E. Hanson ,  Terry M. Nelson

发明人： C. S. Chan ,  Gary E. Hanson ,  Terry M. Nelson

IPC分类号： B41J2/045 ,  B41J2/055 ,  B41J2/135 ,  B41J2/14 ,  B41J2/15 ,  B41J2/21 ,  G06K15/10 ,  G01D15/18

CPC分类号： B41J2/14024 ,  B41J2/14129 ,  B41J2/15 ,  B41J2/2132

摘要： A multichamber ink jet pen has a printhead comprising a plurality of nozzle groups corresponding in number to the number of chambers. The nozzle groups are respectively in communication with the individual chambers for receiving ink. The multi-color ink jet pen is retrofittable in a single color printer to provide multicolor printing capability. The nozzles in the nozzle groups are formatted to correspond to the nozzle format in the printhead of the single color ink jet pen, including the same nozzle spacing, to take advantage of the single color printer control for that nozzle format. The nozzle groups each duplicate a different longitudinal segment of the single color nozzle column pattern. The nozzle groups are staggered in the scan direction and the end nozzles in the respective groups have the same longitudinal spacing therebetween as the nozzles in the nozzle columns to duplicate the nozzle spacing of the single color nozzle column pattern within and between the nozzle groups of the multi-color recording head.