公开(公告)号：US20080112696A1

公开(公告)日：2008-05-15

申请号：US11697520

申请日：2007-04-06

申请人： Liyong Chen ,  Irfan Azam Chaudhry ,  Steven Chacko

发明人： Liyong Chen ,  Irfan Azam Chaudhry ,  Steven Chacko

IPC分类号： H02P7/285

CPC分类号： G11B19/28

摘要： Methods and apparatus to lock a phase lock loop to a spindle motor are disclosed. An example controller comprises a counter to determine a period of an operating signal received from a motor, an oscillator to generate a control signal based on an input signal, and an initializer to generate the input value based on the period, wherein the input value causes the oscillator to generate the control signal having the same phase as the operating signal.

摘要翻译： 公开了将锁相环锁定到主轴电机的方法和装置。 示例性控制器包括：计数器，用于确定从电动机接收的操作信号的周期;基于输入信号产生控制信号的振荡器;以及初始化器，用于基于所述周期生成所述输入值，其中所述输入值导致 该振荡器产生具有与操作信号相同相位的控制信号。

公开(公告)号：US07286269B2

公开(公告)日：2007-10-23

申请号：US11158503

申请日：2005-06-22

申请人： Tanya Matskewich ,  Mohammed Gabar El-Gammal ,  David L. Kilgrow ,  Jian Wang ,  Jiang Wu ,  Liyong Chen

发明人： Tanya Matskewich ,  Mohammed Gabar El-Gammal ,  David L. Kilgrow ,  Jian Wang ,  Jiang Wu ,  Liyong Chen

IPC分类号： H04N1/40

CPC分类号： G06K15/02 ,  G06K15/1827 ,  G06K15/1835 ,  G06K15/1844

摘要： A computer-implemented simulated emboldening mechanism for emboldening an input Black and White bitmap to generate an emboldened Anti-Aliasing bitmap. The simulated emboldening adjusts the intensity of the pixel in the direction of emboldening taking into account contextual information regarding surrounding pixels. Since the emboldening is not limited to a Black and White output bitmap, and since the emboldening takes such contextual information into account, legibility and readability of the resulting emboldened character is enhanced.

摘要翻译： 一种计算机实现的模拟启发机制，用于刺激输入的黑白位图，以产生激烈的抗锯齿位图。 考虑到关于周围像素的上下文信息，模拟着色可以调整鼓起方向上像素的强度。 由于刺激不限于黑白输出位图，并且由于加注使得考虑了这种背景信息，因此增强了所得到的加重字符的可读性和可读性。

公开(公告)号：US07263224B2

公开(公告)日：2007-08-28

申请号：US10759357

申请日：2004-01-16

申请人： Jian Wang ,  Yingnong Dang ,  Qiang Wang ,  Liyong Chen ,  Xiaoxu Ma

发明人： Jian Wang ,  Yingnong Dang ,  Qiang Wang ,  Liyong Chen ,  Xiaoxu Ma

IPC分类号： G06K9/00

CPC分类号： G06F3/03545 ,  G06F3/0321

摘要： Systems and methods that determine a path of a pen tip as the pen tip is moved across a document are described. The document is watermarked with a maze pattern from which encoded position information is determined. A sequence of images is captured by a camera that is located in a pen. The path of the pen tip is determined by decoding the associated maze pattern and by matching the captured images with document images. If the position coordinates of any frame that is associated with a stroke cannot be determined from m-array decoding, the frames are transformed and then matched with an area of a document image. Once the position coordinates of at least one frame is determined, the position coordinates of other frames are determined by matching the frames in a neighboring area.

摘要翻译： 描述当笔尖移动通过文档时确定笔尖的路径的系统和方法。 文档用迷宫图案加水印，从而确定编码位置信息。 图像序列由位于笔中的相机捕获。 笔尖的路径通过解码相关联的迷宫图案并通过将拍摄的图像与文档图像相匹配来确定。 如果不能从m阵列解码中确定与笔划相关联的任何帧的位置坐标，则将帧变换，然后与文档图像的区域匹配。 一旦确定了至少一帧的位置坐标，则通过匹配相邻区域中的帧来确定其他帧的位置坐标。

公开(公告)号：US20060290698A1

公开(公告)日：2006-12-28

申请号：US11446491

申请日：2006-06-01

申请人： Jian Wang ,  Liyong Chen ,  Yu Zou ,  Siwei Lyu

发明人： Jian Wang ,  Liyong Chen ,  Yu Zou ,  Siwei Lyu

IPC分类号： G06T11/20

CPC分类号： G06T11/203 ,  G06K9/222

摘要： A method and system for compressing and displaying a digital ink trace. Raw ink data is smoothed, and sharp points of the smoothed line are found. Curve-fitting is then used to generate a mathematical expression that defines the line segments between adjacent sharp points. The ink trace then is represented by a backbone spline that includes the sharp points and the mathematical expressions for the line segments. Thickness information, such as pressure or acceleration information, is combined with the backbone spline to provide a compressed ink file that represents a contour curve of the original ink trace. A display module uses an algorithm to separate the contour curve into a sequence of straight lines. A set of pixels is then generated for the display of each straight line using a novel antialiasing method. The pixels at the ends of adjacent straight lines are aligned using a weighting algorithm.

公开(公告)号：US20060274948A1

公开(公告)日：2006-12-07

申请号：US11142910

申请日：2005-06-02

申请人： Jian Wamg ,  Jiang Wu ,  Liyong Chen ,  Qiang Wang ,  Yingnong Dang ,  Youjun Liu

发明人： Jian Wamg ,  Jiang Wu ,  Liyong Chen ,  Qiang Wang ,  Yingnong Dang ,  Youjun Liu

IPC分类号： G06K9/46

CPC分类号： G06F3/038 ,  G06F3/03545

摘要： A method and apparatus for capturing information and associating the information with a document is described. The captured information may be obtained by a camera associated with a pointing or writing device having a camera.

摘要翻译： 描述了一种用于捕获信息并将信息与文档相关联的方法和装置。 捕获的信息可以通过与具有相机的指示或写入装置相关联的相机获得。

公开(公告)号：US20050147299A1

公开(公告)日：2005-07-07

申请号：US10752086

申请日：2004-01-07

申请人： Jian Wang ,  Yingnong Dang ,  Qiang Wang ,  Liyong Chen ,  Xiaoxu Ma

发明人： Jian Wang ,  Yingnong Dang ,  Qiang Wang ,  Liyong Chen ,  Xiaoxu Ma

IPC分类号： G06T7/00 ,  G06F3/03 ,  G06F3/033 ,  G06K19/06 ,  G06K9/00

CPC分类号： G06F3/03545 ,  G06F3/0321

摘要： An efficient technique is provided for determining a portion of a document corresponding to a captured image. Areas of a document in which the pattern is at least partially obscured are identified. A reference pixel in the image is selected, and an offset between the pixel and the pattern is determined. A pixel-by-pixel comparison is then made of the image with the document such that the reference pixel is only compared with locations in the document that are both within the identified areas and have the determined offset from the pattern. The comparison with the highest correspondence between the image pixels and the electronic document then identifies the position of the reference pixel relative to the electronic document.

摘要翻译： 提供了一种用于确定与捕获图像相对应的文档的一部分的有效技术。 识别出图案至少部分模糊的文档的区域。 选择图像中的参考像素，并且确定像素和图案之间的偏移。 然后，对具有文档的图像进行逐像素比较，使得仅将参考像素与文档中位于所识别的区域内的位置进行比较，并且具有从图案确定的偏移。 与图像像素和电子文档之间的最高对应关系的比较然后识别参考像素相对于电子文档的位置。