公开(公告)号：US20110123116A1

公开(公告)日：2011-05-26

申请号：US12952051

申请日：2010-11-22

申请人： Yuh-Jay Huang

发明人： Yuh-Jay Huang

IPC分类号： G06K9/60

CPC分类号： G06F3/04886 ,  G06F3/04883 ,  G06K9/00416 ,  G06K9/224

摘要： A method for dynamically adjusting a waiting time of handwriting inputs is applied to an electronic equipment having a handwriting input device. When a waiting-for-input time after the handwriting input device receives a handwriting input exceeds a waiting time of the electronic equipment, the electronic equipment performs a handwriting recognition upon the handwriting input so as to display a candidate word list. The method includes the following steps: receiving the handwriting input; generating a writing speed according to the handwriting input; and setting the waiting time of the electronic equipment according to the writing speed.

摘要翻译： 用于动态地调整手写输入的等待时间的方法被应用于具有手写输入装置的电子设备。 当手写输入装置接收到手写输入之后的等待输入时间超过电子设备的等待时间时，电子设备在手写输入时执行手写识别，以显示候选词列表。 该方法包括以下步骤：接收手写输入; 根据手写输入产生书写速度; 并根据写入速度设置电子设备的等待时间。

公开(公告)号：US07174043B2

公开(公告)日：2007-02-06

申请号：US10374482

申请日：2003-02-25

申请人： Ilia Lossev ,  Natalia Bagotskaya

发明人： Ilia Lossev ,  Natalia Bagotskaya

IPC分类号： G06K9/00 ,  G06K9/18

CPC分类号： G06K9/224 ,  G06K9/222 ,  G06K9/68

摘要： A character recognizer recognizes a handwritten input character. A sequence of points in two dimensional space representative of a stroke trajectory forming the input character is gathered. An input Directed Acyclic Graph is built with nodes representative of singular points at the beginning, end, and along the trajectory of the input character and with edges between nodes representative of an edge trajectory formed by the sequence of points of the input character between the singular points. Each edge in the input graph is described based on the shape, orientation and pen lift of the edge trajectory that the edge represents. The input graph is evaluated against model graphs, which are also Directed Acyclic Graphs, for all possible characters to find a path through a model graph that produces a best path similarity score with a corresponding path through the input graph. The input character is identified as an answer character represented by the model graph producing the best path similarity score. Each model graph for a reference character has nodes representative of singular points at the beginning, end, and along the stroke trajectory of the reference character. Edges between nodes in the model graph are representative of an edge trajectory formed by the sequence of points of the reference character between the singular points. Further each edge of the model graph has an “i” vector, a “j” vector and a “k” vector, and the “i,j,k” vectors indicate similarity values associated with the edge trajectory of the reference character and typical shapes, shape rotation and pen lift, respectively.

摘要翻译： 字符识别器识别手写输入字符。 收集代表形成输入字符的笔画轨迹的二维空间中的点序列。 输入定向非循环图由在输入字符的开始，结束和沿着轨迹的代表奇异点的节点构成，并且表示由单数之间的输入字符的点序列形成的边缘轨迹的节点之间的边缘 积分 基于边缘表示的边缘轨迹的形状，方向和笔数来描述输入图中的每个边缘。 对于所有可能的字符，通过模型图来估计输入图，模型图也是定向非循环图，通过模型图找到路径，该模型图通过输入图形产生具有相应路径的最佳路径相似性得分。 输入字符被识别为由产生最佳路径相似性得分的模型图表示的答案字符。 参考字符的每个模型图具有代表参考字符的开始，结束和沿着笔画轨迹的奇异点的节点。 模型图中的节点之间的边缘代表由奇异点之间的参考字符的点序列形成的边缘轨迹。 此外，模型图的每个边缘都具有“i”向量，“j”向量和“k”向量，“i，j，k”向量表示与参考字符的边缘轨迹相关联的相似度值 形状，形状旋转和笔升高。

公开(公告)号：US06897854B2

公开(公告)日：2005-05-24

申请号：US10102649

申请日：2002-03-22

申请人： Yong-chul Cho ,  Suk-han Lee ,  Kyoung-sig Roh ,  Jae-won Lee

发明人： Yong-chul Cho ,  Suk-han Lee ,  Kyoung-sig Roh ,  Jae-won Lee

IPC分类号： G01B11/02 ,  G01B11/26 ,  G06F3/041 ,  G08C17/00 ,  G08C21/00 ,  G09G5/00

CPC分类号： G06K9/224 ,  G06F3/03542 ,  G06F3/03545

摘要： A electronic pen input device and a coordinate determining method are provided. The electronic pen input device includes an optical 3-dimensional detecting device for detecting orientation angles of a centerline of the pen relative to a ground and a height of the pen over a writing surface, a 3-axis accelerometer for detecting a movement of the pen, and a communication means for sending the detected information to a post processing device.

摘要翻译： 提供电子笔输入装置和坐标确定方法。 电子笔输入装置包括：光学三维检测装置，用于检测笔相对于地面的中心线的方向角度以及笔在书写表面上的高度; 3轴加速度计，用于检测笔的运动 以及用于将检测到的信息发送到后处理装置的通信装置。

公开(公告)号：US20050069202A1

公开(公告)日：2005-03-31

申请号：US10672647

申请日：2003-09-26

申请人： Malome Khomo

发明人： Malome Khomo

IPC分类号： G06K9/18 ,  G06K9/22 ,  G06K9/24 ,  G09G5/00

CPC分类号： G06K9/224 ,  G06K9/222 ,  G06K9/24

摘要： The present invention discloses spatial tracking of writing for interpretation of writing motion using three-dimensional position sensors to identify signs, symbols, or glyphs made by a writing stylus in real time. The present invention discloses an elongated pointing device capable of measuring angular directions in a plane and true geometrical distance measurement by tracking radial distance along a ray such that true Cartesian positions in the plane are capable of being tracked. A two-dimensional true geometry tracker may be applied twice. A first time to span the X-Y plane and then again on an orthogonal axis ensuring span in a three-dimensional volume. The tracker may form spherical or cylindrical spatial coordinates and may transform coordinates to Cartesian font coordinates. The present invention also discloses a platform capable of mounting the device for spatial tracking of a stylus. A flat face of the platform may define a surface and volume where a receptacle may engage the stylus and may be actuated by a writer. Sensors on a boom permit two rotation axes to track the radial, polar, and altitude coordinates into three-dimensional (3-D) points and determine dynamic state variables associated with the stylus.

摘要翻译： 本发明公开了用于使用三维位置传感器来解释写入动作的空间跟踪，以便实时地识别由写字笔制成的符号，符号或字形。 本发明公开了一种能够通过跟踪沿着光线的径向距离来测量平面中的角度方向和真实几何距离测量的细长指示装置，使得平面中的真实笛卡尔位置能够被跟踪。 二维真实几何跟踪器可以被应用两次。 第一次跨越X-Y平面，然后跨越正交轴，确保三维体积的跨度。 跟踪器可以形成球面或圆柱空间坐标，并且可以将坐标转换为笛卡尔坐标。 本发明还公开了一种能够安装用于触针的空间跟踪的装置的平台。 平台的平坦表面可以限定一个表面和体积，其中容器可以接合触针并且可由写入器驱动。 吊杆上的传感器允许两个旋转轴将径向，极坐标和高度坐标跟踪到三维（3-D）点，并确定与触控笔相关联的动态状态变量。

公开(公告)号：US20040184659A1

公开(公告)日：2004-09-23

申请号：US10800771

申请日：2004-03-16

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Won-Chul Bang ,  Dong-Yoon Kim ,  Wook Chang ,  Kyoung-Ho Kang ,  Eun-seok Choi

IPC分类号： G06K009/00

CPC分类号： G06K9/222 ,  G06F3/0346 ,  G06F3/03545 ,  G06K9/224

摘要： A handwriting trajectory recognition system, having a motion detection unit adapted to output electric signals based on changes in acceleration of a body of the system in space. A control unit adapted to detect non-stroke regions intervals where the motions of the system body are temporarily stopped and recover handwritings based on the electric signals is provided.

摘要翻译： 一种手写轨迹识别系统，具有运动检测单元，其适于基于空间中的系统的主体的加速度的变化来输出电信号。 提供一种控制单元，其适于检测系统主体的运动暂时停止的非行程区域间隔，并且基于电信号恢复笔迹。

公开(公告)号：US20040046744A1

公开(公告)日：2004-03-11

申请号：US10651919

申请日：2003-08-29

申请人： Canesta, Inc.

发明人： Abbas Rafii ,  Cyrus Bamji ,  Nazim Kareemi ,  Shiraz Shivji

IPC分类号： G09G005/00

CPC分类号： G06F3/011 ,  G06F1/1626 ,  G06F1/1632 ,  G06F1/1673 ,  G06F3/0221 ,  G06F3/0304 ,  G06F3/0426 ,  G06F3/04886 ,  G06K9/224

摘要： A user with hand or stylus inputs information to a companion system such as a PDA, a cell telephone, an appliance, or other device using a virtual input device such as an image of a keyboard. A sensor captures data representing a single image at a given time, from which data three-dimensional positional information as to if, when in time, and where on the virtual input device user-interaction or contact occurred. The processed digital information is output to the companion system. In a virtual keyboard application, the companion system can display an image of a keyboard, including an image of a keyboard showing user fingers, and/or alphanumeric text as such data is input by the user on the virtual input device.

摘要翻译： 具有手或触控笔的用户使用诸​​如键盘的图像的虚拟输入设备将信息输入到诸如PDA，蜂窝电话，设备或其他设备的配套系统。 传感器在给定时间捕获表示单个图像的数据，从该数据三维位置信息，如果在时间上以及在虚拟输入设备上的哪个用户交互或接触发生了三维位置信息。 经处理的数字信息被输出到伴随系统。 在虚拟键盘应用中，伴随系统可以显示键盘的图像，包括显示用户手指的键盘的图像和/或字母数字文本，因为用户在虚拟输入设备上输入这样的数据。

公开(公告)号：US20030174125A1

公开(公告)日：2003-09-18

申请号：US10367609

申请日：2003-02-13

发明人： Ilhami Torunoglu ,  Apurva Desai ,  Cheng-Feng Sze ,  Gagan Prakash ,  Abbas Rafii

IPC分类号： G09G005/00

CPC分类号： G06F3/017 ,  G01S3/8083 ,  G01S5/02 ,  G01S5/18 ,  G01S5/22 ,  G01S17/06 ,  G06F1/1626 ,  G06F1/1632 ,  G06F1/1673 ,  G06F1/169 ,  G06F3/011 ,  G06F3/0221 ,  G06F3/038 ,  G06F3/0423 ,  G06F3/0426 ,  G06F3/043 ,  G06F3/0433 ,  G06F3/0436 ,  G06F3/04886 ,  G06K9/224

摘要： In a sensory input system that detects movement of a user's fingers on an inert work surface, two or more input modes (for instance, keyboard and mouse) are provided within an overlapping or coextensive physical space. Depending on the currently active mode, the invention interprets the finger motions as input according to one of the input modes. Automated and/or manual mode-switching are provided.

摘要翻译： 在感测输入系统中，其检测用户手指在惰性工作表面上的移动，在重叠或共同扩展的物理空间内提供两个或多个输入模式（例如，键盘和鼠标）。 根据当前活动模式，本发明根据输入模式之一将手指运动解释为输入。 提供自动和/或手动模式切换。

公开(公告)号：US06535206B1

公开(公告)日：2003-03-18

申请号：US09507078

申请日：2000-02-18

申请人： Jianping Xu

发明人： Jianping Xu

IPC分类号： G09G500

CPC分类号： G06F3/043 ,  G06F3/0346 ,  G06F3/03545 ,  G06K9/224 ,  G08C21/00

摘要： The invention in one embodiment provides a system and method for determining the position of an ultrasonic pen device, and for providing calculated position information to a computer system. The system of one embodiment comprises a first and second ultrasonic sensor that detect an ultrasonic signal emitted by an ultrasonic pen. The system further includes analog-to-digital converters to digitize the sensed ultrasonic signal and a processor to process the ultrasonic signal and determine the position of the ultrasonic pen. Some embodiments of the invention incorporate an algorithm that comprises calculating a first ultrasonic signal arrival time and calculating a second ultrasonic signal arrival time, and that further comprises using the first and second arrival times in calculating a final ultrasonic signal arrival time.

摘要翻译： 本发明在一个实施例中提供了一种用于确定超声波笔装置的位置并用于向计算机系统提供计算的位置信息的系统和方法。 一个实施例的系统包括第一和第二超声波传感器，其检测由超声波笔发射的超声波信号。 该系统还包括用于数字化感测的超声波信号的模数转换器和处理器以处理超声波信号并确定超声波笔的位置。本发明的一些实施例结合了一种算法，其包括计算第一超声信号到达时间 以及计算第二超声波信号到达时间，并且还包括在计算最终超声信号到达时间时使用第一和第二到达时间。

公开(公告)号：US20020001029A1

公开(公告)日：2002-01-03

申请号：US09892884

申请日：2001-06-28

申请人： FUJI XEROX CO., LTD.

发明人： Tsutomu Abe

IPC分类号： H04N013/00 ,  H04N015/00

CPC分类号： G06K9/325 ,  G01B11/2509 ,  G01B11/2545 ,  G06K9/00201 ,  G06K9/2036 ,  G06K9/224 ,  G06K2209/01 ,  G06T7/521

摘要： The present invention provides an image processing apparatus that efficiently identifies input characters and the like by an intensity image analysis based on range information. The image processing apparatus performs distance measurement by performing three-dimensional measurement by pattern projection to characters written to a manuscript, whiteboard, and the like, gets an intensity image used as a so-called actual image and an image for distance measurement in parallel, and identifies input characters by an intensity image analysis based on range information. The image processing apparatus picks up characters, patterns, and the like written onto paper or the like with a pen, performs geometric transformation for picked-up images, and performs natural input character analysis and reading processing. Furthermore, by comparing images picked up in a time-series, noise elimination and manuscript position modifications become possible.

摘要翻译： 本发明提供一种通过基于范围信息的强度图像分析来有效地识别输入字符等的图像处理装置。 图像处理装置通过对写入原稿，白板等的字符进行图案投影进行三维测量，并行获得用作所谓的实际图像的强度图像和用于距离测量的图像并行进行距离测量， 并通过基于范围信息的强度图像分析来识别输入字符。 图像处理装置用笔拾取写在纸张等上的字符，图案等，对拍摄图像进行几何变换，并进行自然输入字符分析和读取处理。 此外，通过比较以时间序列拾取的图像，可以进行噪声消除和原稿位置修改。

公开(公告)号：US06229102B1

公开(公告)日：2001-05-08

申请号：US09141903

申请日：1998-08-28

申请人： Yasuhiro Sato ,  Takao Inoue ,  Etsuko Fujisawa ,  Takashi Kitaguchi ,  Toshiyuki Furuta ,  Norihiko Murata ,  Mitsuru Shingyouchi

发明人： Yasuhiro Sato ,  Takao Inoue ,  Etsuko Fujisawa ,  Takashi Kitaguchi ,  Toshiyuki Furuta ,  Norihiko Murata ,  Mitsuru Shingyouchi

IPC分类号： G08C2100

CPC分类号： G06F3/03545 ,  G06K9/00409 ,  G06K9/222 ,  G06K9/224

摘要： A small-sized pen-shaped input apparatus precisely detects handwriting input. The apparatus compensates for the effects of the inclination of the pen-shaped input apparatus. An initial inclination angle calculating section calculates the initial value of the inclination angle of a pen shaft in a gravity coordinate system. The inclination angle variation calculating section calculates a variation value of the inclination angle of the pen shaft. A handwriting inclination angle calculating section calculates the inclination angle of the pen shaft when writing. A coordinates conversion calculating section converts the coordinate system of the acceleration from the pen shaft coordinate system to the gravity coordinate system. A movement amount calculating section calculates the movement direction and the movement distance of the pen's tip end. Finally, a handwriting detecting section detects a state of handwriting or non-handwriting.

摘要翻译： 小型笔形输入装置精确地检测手写输入。 该装置补偿笔形输入装置的倾斜度的影响。 初始倾斜角计算部计算重力坐标系中的笔轴的倾斜角度的初始值。 倾斜角度变化计算部分计算笔轴的倾斜角度的变化值。 手写倾斜角度计算部分计算书写时笔轴的倾斜角度。 坐标转换计算部将加速度的坐标系从笔轴坐标系转换为重力坐标系。 移动量计算部分计算笔的末端的移动方向和移动距离。 最后，手写检测部检测笔迹或非笔迹的状态。