公开(公告)号：US06259084B1

公开(公告)日：2001-07-10

申请号：US09389206

申请日：1999-09-02

申请人： Richard L Kochis ,  Dan L Dalton ,  Robert W Moss ,  Brian L Hastings ,  Thomas C Oliver

发明人： Richard L Kochis ,  Dan L Dalton ,  Robert W Moss ,  Brian L Hastings ,  Thomas C Oliver

IPC分类号： H04N314

CPC分类号： H04N1/047 ,  H04N1/107

摘要： The invention relates in general to providing greater accuracy in scanning and digital reproduction of images. More specifically, the invention acts to improve the precision of optical data by substantially eliminating sensor drift or “dark current” and acts to improve the accuracy in identification of the position at which various optical samples are taken by determining and correcting for the lag time inherent in initiating and executing a sampling operation.

摘要翻译： 本发明一般涉及提供更高精度的图像扫描和数字再现。 更具体地，本发明通过基本上消除传感器漂移或“暗电流”来提高光学数据的精度，并通过确定和校正固有的滞后时间来提高识别各种光学样本的位置的准确性 在启动和执行采样操作。

公开(公告)号：US06376834B1

公开(公告)日：2002-04-23

申请号：US09427198

申请日：1999-10-26

申请人： Brian L Hastings ,  Dan L Dalton

发明人： Brian L Hastings ,  Dan L Dalton

IPC分类号： G06K932

CPC分类号： H04N1/0402 ,  H04N1/0414 ,  H04N1/0443 ,  H04N1/0455 ,  H04N2201/046

摘要： Moire patterns are significantly suppressed in a scanner that continuously varies its number of lines per inch. The number of dots per inch in the direction different from the relative motion between the scanner and the document is generally a fixed property of the optical sensor, but in the LPI direction the distance between consecutive lines can be made to randomly vary between a maximum distance and a minimum distance. This spatially distributes the moire effect, and prevents its accumulation into the usual recognizable two dimensional pattern.

摘要翻译： 在扫描仪中，波纹图案显着被抑制，每英寸的线数不断变化。 在与扫描仪和文件之间的相对运动不同的方向上每英寸的点数通常是光学传感器的固定特性，但是在LPI方向上，连续线之间的距离可以在最大距离 和最小距离。 这在空间上分布了莫尔效应，并防止其累积到通常的可识别的二维图案中。

公开(公告)号：US06713752B2

公开(公告)日：2004-03-30

申请号：US10215737

申请日：2002-08-09

申请人： Thomas C Oliver ,  Kevin W Nay ,  Brian L Hastings

发明人： Thomas C Oliver ,  Kevin W Nay ,  Brian L Hastings

IPC分类号： G06M700

CPC分类号： H04N1/047 ,  H04N1/107 ,  H04N2201/04712 ,  H04N2201/04734 ,  H04N2201/04737

摘要： Methods of sampling a surface having a micro-texture upon which an optical navigation circuit tracks movement. An embodiment of the method comprises determining a rate for taking samples of the surface, determining an exposure level of the surface, illuminating the surface at the determined rate for taking samples, and illuminating the surface for each of the samples with pulses of light at the determined exposure level.

摘要翻译： 对具有微观纹理的表面进行采样的方法，光学导航电路跟踪运动。 该方法的一个实施例包括确定用于获取表面样本的速率，确定表面的曝光水平，以确定的采集样本的速率照射表面，并且在每个采样处用 确定暴露水平。

公开(公告)号：US06455840B1

公开(公告)日：2002-09-24

申请号：US09429507

申请日：1999-10-28

申请人： Thomas C Oliver ,  Kevin W Nay ,  Brian L Hastings

发明人： Thomas C Oliver ,  Kevin W Nay ,  Brian L Hastings

IPC分类号： H01J4014

CPC分类号： H04N1/047 ,  H04N1/107 ,  H04N2201/04712 ,  H04N2201/04734 ,  H04N2201/04737

摘要： An optical navigation system saves power by pulsing its surface illumination light source to provide light only when needed. The level of light may be controlled by a servo-mechanism that monitors degree of correlation data and average illumination, and that changes the controlled level at times when it is both required and safe to do so. As for creating different levels of illumination, that maybe accomplished by: (1) pulsing the light on and then opening the electronic shutter for some period of time during the pulse (gating the light); (2) opening the shutter and then varying the pulse width of the light (gating the LED); (3) opening the shutter and then pulsing the LED at different intensities; and (4) a combination of(2) and (3). In addition, the velocity of the navigation circuit over the surface (or vise versa) can be determined, and in cases where it is safe to assume that limited acceleration is possible, at low velocities it is desirable to reduce the rate of data acquisition, and thereby pulse the light source less often and conserve power.

摘要翻译： 光学导航系统通过脉冲其表面照明光源来节省功率，以在需要时提供光。 光的等级可以由监视相关数据和平均照明的伺服机构来控制，并且在需要和安全的时候改变受控水平。 对于创建不同级别的照明，这可以通过以下方式实现：（1）在脉冲期间脉冲（门控灯）中使光在其上打开然后打开电子快门一段时间; （2）打开快门，然后改变光的脉冲宽度（选通LED）; （3）打开快门，然后以不同的强度脉冲LED; 和（4）（2）和（3）的组合。 此外，可以确定导航电路在表面上的速度（或反之亦然），并且在可以假定有限加速度是可能的情况下，在低速度下，期望降低数据采集的速率， 从而较少地脉冲光源并节省功率。

公开(公告)号：US06303921B1

公开(公告)日：2001-10-16

申请号：US09447606

申请日：1999-11-23

申请人： Brian L Hastings ,  David C Rohn

发明人： Brian L Hastings ,  David C Rohn

IPC分类号： H01J4014

CPC分类号： H04N1/047 ,  H04N1/107 ,  H04N1/3876 ,  H04N2201/04712 ,  H04N2201/04734 ,  H04N2201/04743

摘要： A scanning device includes a mode for generating a reproduced image on a standard page size from a large-sized original image. In this mode, the sampling rate of the scanning device in a motion direction is reduced. In addition, the captured image data in the sensor direction is downsampled by some factor. Position data that is generated as the image data is captured is also modified in accordance with the downsampling factor. A reproduced image is then generated from the modified image and position data and printed at a standard resolution.

摘要翻译： 扫描装置包括用于从大尺寸原始图像生成标准页面大小的再现图像的模式。 在该模式中，扫描装置在运动方向上的采样率降低。 此外，传感器方向上的拍摄图像数据被下采样一些因素。 捕获图像数据时生成的位置数据也根据下采样因子进行修改。 然后从修改的图像和位置数据生成再现图像并以标准分辨率打印。

公开(公告)号：US08570194B2

公开(公告)日：2013-10-29

申请号：US12204824

申请日：2008-09-05

申请人： Marshall T DePue ,  David M Lane ,  Stephan C Klein ,  Brian L Hastings ,  David D Bohn

发明人： Marshall T DePue ,  David M Lane ,  Stephan C Klein ,  Brian L Hastings ,  David D Bohn

IPC分类号： H03M11/00 ,  G09G5/08 ,  G06F3/033

CPC分类号： G06F3/038 ,  G06F3/0317 ,  G06F3/03543

摘要： Architecture for managing clutch height in an optical navigational device such as a computer mouse. In one embodiment for a mouse, a feature can be molded into the bottom case that limits the clutch height by occluding the reflected light to the image sensor when the device is lifted from the tracking surface. Tracking is disabled when the clutch height threshold is exceeded, and re-enabled when the device is brought under the distance clutch height threshold. The device includes firmware controlled algorithm adjustments to one or more correlation parameters. When employing a D-shaped aperture, a threshold can be placed on the z-axis height tracking distance using dimensional characteristics of the shaped aperture, such as a knife-edge (the straight portion of the “D” shaped aperture), to impose a shadow across the image sensor. The aperture can be custom designed to occlude a portion of the emitted light from an LED.

摘要翻译： 用于在诸如计算机鼠标的光学导航装置中管理离合器高度的结构。 在鼠标的一个实施例中，特征可以模制到底壳中，当将装置从跟踪表面提升时，通过将反射光遮挡到图像传感器来限制离合器高度，从而限制离合器高度。 当超过离合器高度阈值时，跟踪被禁用，当设备离开离合器高度阈值时重新启用。 该设备包括对一个或多个相关参数的固件控制算法调整。 当采用D形孔时，可以使用诸如刀刃（“D”形孔的直线部分）的成形孔的尺寸特征将阈值设置在z轴高度跟踪距离上，以施加 图像传感器上的阴影。 光圈可以定制设计成遮挡来自LED的一部分发射光。

公开(公告)号：US07777722B2

公开(公告)日：2010-08-17

申请号：US11426048

申请日：2006-06-23

申请人： David Bohn ,  Krishna Darbha ,  Jim Marshall ,  Brian L Hastings

发明人： David Bohn ,  Krishna Darbha ,  Jim Marshall ,  Brian L Hastings

IPC分类号： G06F3/033 ,  G09G5/08 ,  G09G5/00 ,  G01B11/02

CPC分类号： G06F3/0317

摘要： A system and method is provided for selecting a light source in a pointing device such as a mouse. The selection of the light source may be based on attributes of a received image, which are in turn based on reflected light received at the pointing device from the tracking surface. Because the attributes of the receive image are related to characteristics of the tracking surface over which the pointing device is moved, an illumination source appropriate for a particular surface type can be chosen.

摘要翻译： 提供了一种用于在诸如鼠标的指示设备中选择光源的系统和方法。 光源的选择可以基于接收到的图像的属性，其依次基于在跟踪表面处在指向设备处接收的反射光。 由于接收图像的属性与指示装置所在的跟踪表面的特征相关，所以可以选择适合于特定表面类型的照明源。