System and method for data-driven error diffusion using pointer
    11.
    发明申请
    System and method for data-driven error diffusion using pointer 审中-公开
    使用指针进行数据驱动误差扩散的系统和方法

    公开(公告)号:US20060132848A1

    公开(公告)日:2006-06-22

    申请号:US11018204

    申请日:2004-12-20

    CPC classification number: H04N1/4052

    Abstract: Pixel data-driven error diffusion is performed by using two lookup tables. The first table receives a non-binary pixel value and outputs a selection signal in response thereto. The selection signal serves as a pointer to entries in the second table where coefficients associated with a set of error spread weights are stored. In this manner, each non-binary pixel value is mapped onto a handful of predetermined sets of error spread weights to be used in an error diffusion calculation. The first table, the second table and an associated error diffusion processor can all reside on a common integrated circuit. A third table can also be indexed at the same time to provide randomization information to be used in calculating a dynamic threshold for used in a half-toning process for the corresponding pixel.

    Abstract translation: 通过使用两个查找表来执行像素数据驱动的错误扩散。 第一表接收非二进制像素值,并响应于此输出选择信号。 所述选择信号用作指向第二表中与条目的项目的指针,其中存储与一组误差扩展权重相关的系数。 以这种方式,将每个非二进制像素值映射到少量预定的误差扩散权重集合以用于误差扩散计算。 第一表,第二表和相关的误差扩散处理器都可以驻留在公共集成电路上。 第三表也可以同时被索引,以提供用于计算用于对应像素的半色调处理中的动态阈值的随机化信息。

    Method and apparatus for improving color registration in contact-image-sensor scanners
    12.
    发明申请
    Method and apparatus for improving color registration in contact-image-sensor scanners 审中-公开
    用于改善接触图像传感器扫描仪中颜色配准的方法和装置

    公开(公告)号:US20060114521A1

    公开(公告)日:2006-06-01

    申请号:US11001965

    申请日:2004-12-01

    CPC classification number: H04N1/40006 H04N1/40056 H04N1/484

    Abstract: A method, and a document scanning apparatus employing the method, of scanning with a light source. The method comprises the acts of determining a calibration time of the light source and light sensor in a scanning unit, adjusting an activation time for the light source based on the calibration time, scaling a clock signal based on the activation time, and activating the light source based on the scaled clock signals. Where a red, green and blue LED light source is used, the longest of the activation times of the LEDs is used for the scaling of the clock signals. In another embodiment, the time between the start of the activation of last LED scan on a previous scan line and the start of activation of the first LED on the subsequent scan line is adjusted to maintain the predetermined resolution used for the scan.

    Abstract translation: 一种使用该方法的方法和文件扫描装置,用光源进行扫描。 该方法包括确定扫描单元中的光源和光传感器的校准时间的动作,基于校准时间调整光源的激活时间,基于激活时间缩放时钟信号,以及激活光 源基于缩放的时钟信号。 在使用红色,绿色和蓝色LED光源的地方,LED的最长激活时间用于缩放时钟信号。 在另一个实施例中,调整在先前扫描线上的最后LED扫描的开始激活与随后扫描线上的第一LED的启动开始之间的时间,以保持用于扫描的预定分辨率。

    System and method for high-performance scanner calibration
    13.
    发明申请
    System and method for high-performance scanner calibration 审中-公开
    用于高性能扫描仪校准的系统和方法

    公开(公告)号:US20060001921A1

    公开(公告)日:2006-01-05

    申请号:US10883427

    申请日:2004-06-30

    CPC classification number: H04N1/401 H04N5/361 H04N5/3651

    Abstract: The present invention is directed to a system and method for reducing the memory requirement for offset and gain calibration to relieve the size/performance bottleneck in scanner systems. The resulting methodology produces visually equivalent scanned results with a substantial increase in performance, which results in a shorter amount of time required to output a first copy in, for example, an all-in-one device. Since the calibration step is often the bottleneck in scanner performance, this method noticeably speeds up scan and copy time. Implementing the decompression in hardware requires a minimal amount of hardware overhead and complexity. Thus, this method has a minimal impact on the size and cost of the scanner controller (e.g., an ASIC—application specific integrated circuit). Since compression only takes place at most once per scan, this added step has no significant impact on the overall scan time. By allowing dynamic grouping of pixels using a single calibration packet, the quality of the compensation can be optimized with the size of the compensation data being minimized. Adding the ability to shift the compressed deviation stored in the calibration packet, the range of the pixel-to-pixel deviation can be increased without impacting the size of the calibration data. This flexibility makes this invention applicable to future image sensors that may have widely varying deviations in pixel-to-pixel offset and gain values.

    Abstract translation: 本发明涉及用于减少偏移和增益校准的存储器需求以减轻扫描器系统中的尺寸/性能瓶颈的系统和方法。 所得到的方法产生视觉上等效的扫描结果,性能显着增加,这导致在例如一体式设备中输出第一副本所需的更短的时间量。 由于校准步骤通常是扫描仪性能的瓶颈,因此该方法显着加快了扫描和复制时间。 在硬件中实现解压缩需要最少的硬件开销和复杂性。 因此,该方法对扫描仪控制器(例如,ASIC专用集成电路)的尺寸和成本具有最小的影响。 由于每次扫描最多只能进行一次压缩,因此添加的步骤对整个扫描时间没有显着影响。 通过允许使用单个校准分组对像素进行动态分组,可以使补偿数据的大小最小化来优化补偿的质量。 增加移动存储在校准包中的压缩偏差的能力,可以增加像素到像素偏差的范围而不影响校准数据的大小。 这种灵活性使得本发明适用于未来可能在像素到像素偏移和增益值中具有广泛变化的偏差的图像传感器。

    Calibration technique for variable-gain amplifiers
    14.
    发明申请
    Calibration technique for variable-gain amplifiers 有权
    可变增益放大器的校准技术

    公开(公告)号:US20050270092A1

    公开(公告)日:2005-12-08

    申请号:US10862699

    申请日:2004-06-07

    CPC classification number: H03F1/30 H03F3/45928

    Abstract: A variable-gain amplifier (VGA), with one or more amplifier stages, has two or more offset correction sources connected to apply offset correction signals at different locations in the VGA. In one embodiment, each amplifier stage has both an input offset correction source and an output offset correction source. In another embodiment, each amplifier stage of a multi-stage VGA has an input offset correction source. By sequentially calibrating each amplifier stage, starting with the initial stage and proceeding downstream, the entire VGA can be calibrated to achieve gain-independent compensation for the adverse affects of input and output voltage offsets at the input and output, respectively, of each stage.

    Abstract translation: 具有一个或多个放大器级的可变增益放大器(VGA)具有两个或多个偏移校正源,其连接以在VGA中的不同位置处施加偏移校正信号。 在一个实施例中,每个放大器级具有输入偏移校正源和输出偏移校正源。 在另一实施例中,多级VGA的每个放大级具有输入偏移校正源。 通过顺序校准每个放大器级,从初始阶段开始并在下游进行,可以对整个VGA进行校准,以实现增益无关的补偿,用于分别在每个输入和输出端的输入和输出电压偏移的不利影响。

    Method and system for automated repair design of damaged blades of a compressor or turbine
    15.
    发明授权
    Method and system for automated repair design of damaged blades of a compressor or turbine 有权
    压缩机或涡轮机损坏叶片的自动修复设计方法和系统

    公开(公告)号:US06915236B2

    公开(公告)日:2005-07-05

    申请号:US10301723

    申请日:2002-11-22

    CPC classification number: B23P6/002 F01D5/005 Y10T29/4973

    Abstract: A method is disclosed for evaluating a damaged blade in a compressor or turbine using a computer system accessing a database of blade repair information, where the method includes: selecting a blade damage geometry category corresponding to the damage of the blade from a plurality of blade damage geometry categories; measuring the blade damage, and generating a repair geometry for the blade based on the blade damage measurements and the selected blade damage geometry category.

    Abstract translation: 公开了一种用于使用访问刀片修复信息的数据库的计算机系统来评估压缩机或涡轮机中的损坏的刀片的方法,其中所述方法包括:从多个刀片损伤中选择对应于刀片损坏的刀片损伤几何类别 几何类别; 测量刀片损伤,并根据刀片损伤测量和所选择的刀片损伤几何类别为刀片生成修复几何。

    Apparatus for selectively electroplating an airfoil
    17.
    发明授权
    Apparatus for selectively electroplating an airfoil 有权
    用于选择性地电镀翼型的装置

    公开(公告)号:US6162335A

    公开(公告)日:2000-12-19

    申请号:US268186

    申请日:1999-03-15

    CPC classification number: C25D17/06 C25D5/022

    Abstract: A process and apparatus for selectively electroplating the tip portion of an airfoil. The airfoil includes a root portion and a blade portion having a tip. At least part of the blade including the tip is coated with an insulating material. Insulating material is removed from the tip and the airfoil is mounted in a fixture so that the tip is exposed. The fixture is immersed in a sealing bath, and the fixture and at least a portion of the airfoil is encased in sealing material while leaving the tip exposed. The fixture is then immersed in an electroplating bath, the exposed tip is electroplated, and the fixture is removed from the bath. The fixture includes an elongated base member and a grip element supported on the base member. The grip element is made of a flexible material and has a plurality of slots configured for receiving the root portion of the airfoils. An electrical contact is provided in each slot so as to contact the root portion of the airfoil. A plurality of fixture may be mounted on a carousel.

    Abstract translation: 一种用于选择性地电镀翼型的末端部分的方法和装置。 翼型件包括根部部分和具有尖端的叶片部分。 包括尖端的刀片的至少一部分涂覆有绝缘材料。 将绝缘材料从尖端移除,将翼型件安装在固定装置中,使得尖端暴露。 将固定装置浸入密封槽中,并将固定装置和翼型件的至少一部分封装在密封材料中,同时使尖端暴露。 然后将固定装置浸入电镀浴中,将暴露的尖端电镀,将固定装置从浴中取出。 该固定装置包括一个细长的底座构件和一个支撑在基座构件上的把手元件。 夹紧元件由柔性材料制成,并且具有多个狭槽,其构造成用于接收翼型件的根部。 在每个槽中提供电触头,以便接触翼型件的根部。 多个夹具可以安装在转盘上。

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