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1. 发明授权

US5949964A Method and apparatus for halftoning of images in a printer 失效
标题翻译：在打印机中对图像进行半色调的方法和装置
公开(公告)号：US5949964A
公开(公告)日：1999-09-07
申请号：US877343
申请日：1997-06-17
申请人： Scott C. Clouthier , Douglas Heins , Brian E. Hoffmann , James R. Nottingham , Gary L. Vondran, Jr.
发明人： Scott C. Clouthier , Douglas Heins , Brian E. Hoffmann , James R. Nottingham , Gary L. Vondran, Jr.
IPC分类号： G06K15/02 , G06T5/00 , H04N1/40 , H04N1/405 , G06F15/00
CPC分类号： H04N1/405 , G06K15/02 , H04N1/40062 , G06K2215/0014 , G06K2215/0065 , G06K2215/0094
摘要： A method for halftoning an image to be rendered onto a media sheet includes the steps of: classifying data portions of a received data stream into one of plural image types, each image type to be subjected to a particular halftone procedure; assigning to each data portion of a common image type, a common identifier and then converting the data portions into a raster representation; subjecting segments of the raster representation to individualized halftone procedures, each segment of the raster representation that is assigned a common identifier being subjected to an identical halftone procedure; and rendering the raster representation onto a media sheet, subsequent to the halftone process. The apparatus for performing the halftone method places the halftone operation subsequent to the rasterization operation and thereby avoids anomalies which occurred in the prior art. Further, the apparatus enables halftone tables which are utilized during the halftone procedure to be altered so as to enable improvements to the halftone method.
摘要翻译：将要呈现到介质片上的图像进行半色调的方法包括以下步骤：将接收到的数据流的数据部分分类为多个图像类型中的一个，每个图像类型要进行特定的半色调处理; 向公共图像类型的每个数据部分分配公共标识符，然后将数据部分转换为光栅表示; 对光栅表示的段进行个性化的半色调处理，对被分配有相同的半色调过程的公共标识符的光栅表示的每个段进行分类; 以及在半色调处理之后将光栅表示呈现在介质片上。用于执行半色调方法的装置在光栅化操作之后放置半色调操作，从而避免现有技术中发生的异常。此外，该设备使得可以改变在半色调过程期间使用的半色调表，以便能够改进半色调方法。

2. 发明授权

US5852742A Configurable data processing pipeline 失效
标题翻译：可配置数据处理流水线
公开(公告)号：US5852742A
公开(公告)日：1998-12-22
申请号：US878883
申请日：1997-06-17
申请人： Gary L. Vondran, Jr. , James R. Nottingham , Scott C. Clouthier , Douglas Heins , Brian E. Hoffmann
发明人： Gary L. Vondran, Jr. , James R. Nottingham , Scott C. Clouthier , Douglas Heins , Brian E. Hoffmann
IPC分类号： B41J29/38 , B41J5/30 , G06F3/12 , G06F7/00 , G06K15/02 , G06T1/20 , H04N1/40 , H04N1/411 , G06F9/00
CPC分类号： G06K15/02 , G06K2215/0002 , G06K2215/0011 , G06K2215/0094
摘要： A print data processing pipeline for use in a color electrophotographic printer optimizes print quality and minimizes memory usage by separately processing lossy and lossless print data. Lossy print data may include print data for images and lossless print data may include print data for text, line art, and graphics. Partitioning print data into lossy and lossless components allows application of the print data compression operations optimized for each type of print data. High compression ratios can be achieved on lossy print data by applying visually lossless compression operations designed for the lossy print data. In addition, high compression ratios can be achieved on the lossless print data by applying lossless compression operations designed for the lossless print data. A merge unit combines the lossy and lossless print data streams after decompression to reconstruct the original image. Placement of the color space conversion operation and the halftone operation relative to the merge operation, further optimizes the print quality while minimizing memory usage. The print data processing pipeline includes a direct memory access controller which has the capability to allow print data to be selectively directed to the lossy or lossless compressor/decompressor, the color space converter, or the merge unit. Feedback paths within the print data processing pipeline allow the results of the various operations performed to be returned to the direct memory access controller for further processing or storage in system memory. Bypass paths in the color space converter and halftone unit allow print data to be selectively directed around these operations. These capabilities allow configuration of the print data processing pipeline to perform a multitude of permutations of print data processing operations optimized for the print data.
摘要翻译：用于彩色电子照相打印机的打印数据处理流水线通过单独处理有损耗和无损打印数据来优化打印质量并最小化存储器使用。有损打印数据可以包括用于图像的打印数据和无损打印数据可以包括用于文本，线条图形和图形的打印数据。将打印数据分成有损和无损的组件，可以应用针对每种打印数据优化的打印数据压缩操作。通过为有损打印数据应用视觉无损压缩操作，可以在有损打印数据上实现高压缩比。此外，通过为无损打印数据应用无损压缩操作，可以在无损打印数据上实现高压缩比。合并单元在解压缩之后组合有损和无损打印数据流以重建原始图像。相对于合并操作，色彩空间转换操作和半色调操作的放置进一步优化打印质量，同时最小化存储器使用。打印数据处理流水线包括直接存储器访问控制器，其具有允许打印数据被选择性地指向有损或无损压缩器/解压缩器，色空间转换器或合并单元的能力。打印数据处理流水线内的反馈路径允许执行的各种操作的结果返回到直接存储器访问控制器，以便进一步处理或存储在系统存储器中。彩色空间转换器和半色调单元中的旁路路径允许打印数据选择性地围绕这些操作。这些功能允许配置打印数据处理流水线，以执行针对打印数据优化的打印数据处理操作的多种排列。

3. 发明授权

US5915079A Multi-path data processing pipeline 失效
标题翻译：多路径数据处理流水线
公开(公告)号：US5915079A
公开(公告)日：1999-06-22
申请号：US877345
申请日：1997-06-17
申请人： Gary L. Vondran, Jr. , James R. Nottingham , Douglas Heins
发明人： Gary L. Vondran, Jr. , James R. Nottingham , Douglas Heins
IPC分类号： B41J5/30 , G06F3/12 , G06F7/00 , G06T1/20 , H04N1/40 , H04N1/411 , H04N1/64 , G06F9/00
CPC分类号： H04N1/642 , G06F3/1297
摘要： A print data processing pipeline for use in a color electrophotographic printer optimizes print quality and minimizes memory usage by separately processing lossy and lossless print data. Lossy print data may include print data or images and lossless print data may include print data for text, line art, and graphics. Partitioning print data into lossy and lossless components allows application of the print data compression operations optimized for each type of print data. High compression ratios can be achieved on lossy print data by applying visually lossless compression operations designed for the lossy print data. In addition, high compression ratios can be achieved on the lossless print data by applying lossless compression operations designed for the lossless print data. A merge unit combines the lossy and lossless print data streams after decompression to reconstruct the original image. Placement of the color space conversion operation and the halftone operation relative to the merge operation, further optimizes the print quality while minimizing memory usage. The print data processing pipeline includes a direct memory access controller which has the capability to allow print data to be selectively directed to the lossy or lossless compressor/decompressor, the color space converter, or the merge unit. Feedback paths within the print data processing pipeline allow the results of the various operations performed to be returned to the direct memory access controller for further processing or storage in system memory. Bypass paths in the color space converter and halftone unit allow print data to be selectively directed around these operations. These capabilities allow configuration of the print data processing pipeline to perform a multitude of permutations of print data processing operations optimized for the print data.
摘要翻译：用于彩色电子照相打印机的打印数据处理流水线通过单独处理有损耗和无损打印数据来优化打印质量并最小化存储器使用。有损打印数据可以包括打印数据或图像，并且无损打印数据可以包括文本，线条图和图形的打印数据。将打印数据分成有损和无损的组件，可以应用针对每种打印数据优化的打印数据压缩操作。通过为有损打印数据应用视觉无损压缩操作，可以在有损打印数据上实现高压缩比。此外，通过为无损打印数据应用无损压缩操作，可以在无损打印数据上实现高压缩比。合并单元在解压缩之后组合有损和无损打印数据流以重建原始图像。相对于合并操作，色彩空间转换操作和半色调操作的放置进一步优化打印质量，同时最小化存储器使用。打印数据处理流水线包括直接存储器访问控制器，其具有允许打印数据被选择性地指向有损或无损压缩器/解压缩器，色空间转换器或合并单元的能力。打印数据处理流水线内的反馈路径允许执行的各种操作的结果返回到直接存储器访问控制器，以便进一步处理或存储在系统存储器中。彩色空间转换器和半色调单元中的旁路路径允许打印数据选择性地围绕这些操作。这些功能允许配置打印数据处理流水线，以执行针对打印数据优化的打印数据处理操作的多种排列。

4. 发明授权

US5940585A Data merge unit 失效
标题翻译：数据合并单位
公开(公告)号：US5940585A
公开(公告)日：1999-08-17
申请号：US877346
申请日：1997-06-17
申请人： Gary L. Vondran, Jr. , James R. Nottingham
发明人： Gary L. Vondran, Jr. , James R. Nottingham
IPC分类号： B41J29/38 , B41J5/30 , G06F3/12 , G06F7/00 , G06F7/32 , G06T1/20 , H04N1/40 , H04N1/411 , G06F15/00
CPC分类号： G06F7/32
摘要： A print data processing pipeline for use in a color electrophotographic printer optimizes print quality and minimizes memory usage by separately processing lossy and lossless print data. Lossy print data may include print data for images and lossless print data may include print data for text, line art, and graphics. Partitioning print data into lossy and lossless components allows application of the print data compression operations optimized for each type of print data. High compression ratios can be achieved on lossy print data by applying visually lossless compression operations designed for the lossy print data. In addition, high compression ratios can be achieved on the lossless print data by applying lossless compression operations designed for the lossless print data. A merge unit combines the lossy and lossless print data streams after decompression to reconstruct the original image. Placement of the color space conversion operation and the halftone operation relative to the merge operation, further optimizes the print quality while minimizing memory usage. The print data processing pipeline includes a direct memory access controller which has the capability to allow print data to be selectively directed to the lossy or lossless compressor/decompressor, the color space converter, or the merge unit. Feedback paths within the print data processing pipeline allow the results of the various operations performed to be returned to the direct memory access controller for further processing or storage in system memory. Bypass paths in the color space converter and halftone unit allow print data to be selectively directed around these operations. These capabilities allow configuration of the print data processing pipeline to perform a multitude of permutations of print data processing operations optimized for the print data.
摘要翻译：用于彩色电子照相打印机的打印数据处理流水线通过单独处理有损耗和无损打印数据来优化打印质量并最小化存储器使用。有损打印数据可以包括用于图像的打印数据和无损打印数据可以包括用于文本，线条图形和图形的打印数据。将打印数据分成有损和无损的组件，可以应用针对每种打印数据优化的打印数据压缩操作。通过为有损打印数据应用视觉无损压缩操作，可以在有损打印数据上实现高压缩比。此外，通过为无损打印数据应用无损压缩操作，可以在无损打印数据上实现高压缩比。合并单元在解压缩之后组合有损和无损打印数据流以重建原始图像。相对于合并操作，色彩空间转换操作和半色调操作的放置进一步优化打印质量，同时最小化存储器使用。打印数据处理流水线包括直接存储器访问控制器，其具有允许打印数据被选择性地指向有损或无损压缩器/解压缩器，色空间转换器或合并单元的能力。打印数据处理流水线内的反馈路径允许执行的各种操作的结果返回到直接存储器访问控制器，以便进一步处理或存储在系统存储器中。彩色空间转换器和半色调单元中的旁路路径允许打印数据选择性地围绕这些操作。这些功能允许配置打印数据处理流水线，以执行针对打印数据优化的打印数据处理操作的多种排列。

5. 发明授权

US07457459B2 Monochrome and color transfer 有权
标题翻译：单色和彩色转移
公开(公告)号：US07457459B2
公开(公告)日：2008-11-25
申请号：US10721688
申请日：2003-11-25
申请人： Ronald L. Hall , Phil Dilmore , James R. Nottingham , Dee L. Chou
发明人： Ronald L. Hall , Phil Dilmore , James R. Nottingham , Dee L. Chou
IPC分类号： G06K9/00
CPC分类号： H04N1/46 , G06T1/20 , G06T5/00 , G06T2207/10024
摘要： Apparatuses, systems, and methods are provided for processing data. In one method embodiment, the method includes defining a number of color channels, each channel to transfer a particular color element of a stream of color type pixel data. The method can also include identifying monochrome type pixel data within a data stream and allocating a color channel to transfer the identified monochrome type pixel data.
摘要翻译：提供了用于处理数据的装置，系统和方法。在一个方法实施例中，该方法包括定义多个颜色通道，每个通道用于传送彩色类型像素数据流的特定颜色元素。该方法还可以包括识别数据流内的单色类型像素数据，并分配颜色通道以传送所识别的单色类型像素数据。

6. 发明授权

US06557059B1 Parallel peripheral interface 失效
公开(公告)号：US06557059B1
公开(公告)日：2003-04-29
申请号：US09416599
申请日：1999-10-12
申请人： James R. Nottingham , Calvin K. McDonald , James G. Eldredge
发明人： James R. Nottingham , Calvin K. McDonald , James G. Eldredge
IPC分类号： G06F1300
CPC分类号： G06F13/36
摘要： The invention provides apparatus for the transfer of data/command between a master controller and one or more client controllers. The apparatus in accordance with the invention includes a bi-directional data bus for conveying plural bits of data or command between a master controller and one or more client controllers; direction signal controlling the direction in which data or command bits are conveyed on the data bus as between the master controller and a connected one of the one or more client controllers; a pair of ready signals including a transmit ready signal asserted by a source of data or command bits placed on the data bus and including a receive ready signal asserted by a destination for the data or command bits placed on the data bus; and a clock signal for indicating the presence of valid data or command bits on the data bus on a leading or trailing edge thereof. Preferably, a command/data signal is also provided to indicate the type of information placed on the data bus by the source. In accordance with one aspect of the invention, the pair of ready signals includes a bi-directional transmit ready signal and a bi-directional receive ready signal corresponding to each one of the one or more client controllers, and wherein the functions of the transmit ready signals and the receive ready signals within the interface are modified by the state of the direction signal, whereby under a first state of the direction signal a transmit ready signal is asserted by the master controller to select one of the one or more client controllers as a destination for the data or command bits placed on the data bus and a corresponding receive ready signal is asserted by the one client controller to indicate that the one client controller is ready to receive the data or command bits placed on the data bus and whereby under a second state of the direction signal a transmit ready signal is asserted by the one or more client controllers to indicate the one or more client controllers is ready to transmit data or command bits placed on the data bus and a corresponding receive ready signal is asserted by the master controller to acknowledge receipt of data or command bits placed on the data bus by the one client controller.

7. 发明授权

US5507478A Printing media status sensing 失效
标题翻译：打印媒体状态感应
公开(公告)号：US5507478A
公开(公告)日：1996-04-16
申请号：US309309
申请日：1994-09-20
申请人： James R. Nottingham , Billy L. Knorpp
发明人： James R. Nottingham , Billy L. Knorpp
IPC分类号： B65H7/06 , B65H7/18 , B65H5/00
CPC分类号： B65H7/18 , B65H2511/51 , B65H2513/514
摘要： A printing media position sensing device provides sheet medium position status information for synchronizing media transfer operations in a hard copy machine using a sheet feeder system. When a sheet is picked and transferred from a stack in a replaceable cartridge, refillable tray, or the like, to the input registration and feed mechanism of the hard copy machine, a detector senses the further exit motion of the picked sheet, thus providing an indication that the input registration and feed mechanism has taken control of the sheet. A signal indicative of this condition is used to release the sheet pick and transfer mechanism associated with the stack so that the sheet is free to leave the stack uninhibited. The exit sensor automatically resets for the next cycle.
摘要翻译：打印介质位置检测装置提供用于使用片材进给器系统在硬拷贝机中同步介质传送操作的纸张介质位置状态信息。当将纸张从可替换的盒，可再填充的托盘等中的堆叠中取出并传送到硬拷贝机的输入登记和进给机构时，检测器检测到拾取的纸张的进一步的出口运动，从而提供指示输入登记和进给机构已经控制了纸张。指示该条件的信号用于释放与堆叠相关联的纸张拾取和转印机构，使得纸张不受限制地离开纸张。退出传感器自动重置下一个循环。

8. 发明授权

US06556311B1 Luminance-based color resolution enhancement 失效
标题翻译：基于亮度的色彩分辨率增强
公开(公告)号：US06556311B1
公开(公告)日：2003-04-29
申请号：US08864944
申请日：1997-05-28
申请人： Richard H. Benear , James R. Nottingham
发明人： Richard H. Benear , James R. Nottingham
IPC分类号： G06F1300
CPC分类号： G06T3/403 , H04N1/4092 , H04N1/58
摘要： A method and apparatus enhance a color or grayscale raster image in a printer by identifying a working pixel in the raster image for anti-aliasing, and then modifying luminance data of the working pixel in a luminance chrominance color space such that an anti-aliasing effect is achieved relative to the raster image. The luminance component of the raster image data is converted to a binary format to identify the working pixel using RET template matching. The luminance data of the working pixel is modified by utilizing luminance data of adjacent pixels to produce a new luminance value which is then assigned to the working pixel. One of the adjacent pixels defines an edge of the object being anti-aliased in the raster image, and the other of the adjacent pixels defines an edge of a region in the raster image that is adjacent the object. In the event chroma data is associated with the object, the chroma data is combined with the modified luminance data and also assigned to the working pixel for accurate imaging thereof.
摘要翻译：一种方法和装置通过识别光栅图像中的工作像素进行抗锯齿，然后修改亮度色度色空间中的工作像素的亮度数据，从而增强了打印机中的彩色或灰度光栅图像，使得抗混叠效果相对于光栅图像实现。将光栅图像数据的亮度分量转换为二进制格式，以使用RET模板匹配来识别工作像素。通过利用相邻像素的亮度数据来修改工作像素的亮度数据，以产生新的亮度值，然后将其分配给工作像素。相邻像素中的一个定义了在光栅图像中被抗锯齿的对象的边缘，并且相邻像素中的另一个限定了与对象相邻的光栅图像中的区域的边缘。在色度数据与对象相关联的情况下，色度数据与修改的亮度数据组合，并且还被分配给工作像素以进行精确的成像。

9. 发明授权

US06252576B1 Hardware-efficient system for hybrid-bilinear image scaling 有权
标题翻译：用于混合双线性图像缩放的硬件高效系统
公开(公告)号：US06252576B1
公开(公告)日：2001-06-26
申请号：US09130628
申请日：1998-08-06
申请人： James R. Nottingham
发明人： James R. Nottingham
IPC分类号： G09G500
CPC分类号： G06T3/4007 , H04N19/59 , H04N19/80
摘要： A hybrid bilinear scaling (Qscale) scheme produces output images that have comparable quality to traditional bilinear interpolation algorithms, but requires a less complex hardware implementation. The Qscale system does not reverse-map output pixels back to arbitrary locations in the input space as defined by the mapping function. Rather all pixel values and locations are calculated after all of the original input pixels are mapped to the output. That is, all of the original image pixels are used “as-is” in the resultant scaled image. New pixels are generated from the original input pixels to meet the desired output pixel dimensions. Because only new pixels are computed, the Qscale system is less computationally complex. The computational requirements are further reduced because new pixels are computed between original pixel pairs meaning only two pixels are involved in the computation. Coefficients can be chosen to be fractional powers of two (0.5, 0.25, 0.125, etc) for the interpolation calculation between pixel pairs. By selecting coefficients this way, the linear computation reduces to a “shift-and-add” operation, which is easily implemented in hardware.
摘要翻译：混合双线性缩放（Qscale）方案产生具有与传统双线性插值算法相当的质量的输出图像，但是需要较不复杂的硬件实现。 Qscale系统不会将输出像素反映到返回到映射函数定义的输入空间中的任意位置。相反，在将所有原始输入像素映射到输出之后，计算所有像素值和位置。也就是说，所有原始图像像素在合成的缩放图像中被“原样”使用。从原始输入像素生成新像素以满足期望的输出像素尺寸。因为仅计算新像素，所以Qscale系统计算复杂度较低。计算要求进一步降低，因为在原始像素对之间计算新像素，意味着计算中仅涉及两个像素。可以将系数选择为像素对之间的插值计算的两个（0.5,0.25,0.125等）的分数幂。通过以这种方式选择系数，线性计算减少到“移位和加法”操作，这很容易在硬件中实现。

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