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1. 发明授权

US07737947B2 Tracking motion using an interference pattern 有权
标题翻译：使用干涉图案跟踪运动
公开(公告)号：US07737947B2
公开(公告)日：2010-06-15
申请号：US10687431
申请日：2003-10-16
申请人： Dale W. Schroeder , Marshall T. DePue , Ramakrishna Kakarala , Tong Xie , Gregory D. VanWiggeren
发明人： Dale W. Schroeder , Marshall T. DePue , Ramakrishna Kakarala , Tong Xie , Gregory D. VanWiggeren
IPC分类号： G09G5/08
CPC分类号： G06F3/0317 , G06F3/03545
摘要： A system, method, and device for tracking motion across a surface by creating an interference pattern by reflecting light from the surface. There is produced, as a result of sensor moving across the surface, at least one signal pattern corresponding to a detection of a dimension of the interference pattern. This detected dimension is associated with an assumed dimensional value to determine a distance traveled by the sensor.
摘要翻译：一种用于通过反射来自表面的光产生干涉图案来跟踪表面上的运动的系统，方法和装置。由于传感器在整个表面上移动，所产生的至少一个信号模式对应于干涉图案尺寸的检测。该检测尺寸与假设的尺寸值相关联，以确定传感器行进的距离。

2. 发明授权

US07446756B2 Apparatus for controlling the position of a screen pointer with low sensitivity to particle contamination 有权
标题翻译：用于控制对微粒污染的低灵敏度的屏幕指针的位置的装置
公开(公告)号：US07446756B2
公开(公告)日：2008-11-04
申请号：US10805814
申请日：2004-03-22
申请人： Michael J. Brosnan , Ramakrishna Kakarala , Roopinder Singh Grewal , Mark M. Butterworth , Vincent C. Moyer , Tong Xie , Marshall T. Depue
发明人： Michael J. Brosnan , Ramakrishna Kakarala , Roopinder Singh Grewal , Mark M. Butterworth , Vincent C. Moyer , Tong Xie , Marshall T. Depue
IPC分类号： G09G5/08 , G01P3/36
CPC分类号： G01M11/00 , G06F3/0317
摘要： An apparatus for controlling the position of a screen pointer includes an at least partially coherent light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, performing a movement computation based on the digital images, generating movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation has a low sensitivity to effects in the digital images caused by particle contamination.
摘要翻译：用于控制屏幕指针的位置的装置包括用于照射成像表面的至少部分相干的光源，从而产生反射的图像。该装置包括：导航传感器，用于基于反射图像生成数字图像，基于数字图像执行移动计算;基于指示成像表面和装置之间的相对运动的运动计算产生移动数据;其中，运动计算对由颗粒污染引起的数字图像的影响具有低的灵敏度。

3. 发明申请

US20080246725A1 APPARATUS FOR CONTROLLING THE POSITION OF A SCREEN POINTER WITH LOW SENSITIVITY TO PARTICLE CONTAMINATION 有权
标题翻译：用于控制具有低灵敏度的筛选点的位置用于颗粒污染的装置
公开(公告)号：US20080246725A1
公开(公告)日：2008-10-09
申请号：US12060796
申请日：2008-04-01
申请人： Michael J. Brosnan , Ramakrishna Kakarala , Roopinder Singh Grewal , Mark M. Butterworth , Vincent C. Moyer , Tong Xie , Marshall T. Depue
发明人： Michael J. Brosnan , Ramakrishna Kakarala , Roopinder Singh Grewal , Mark M. Butterworth , Vincent C. Moyer , Tong Xie , Marshall T. Depue
IPC分类号： G06F3/033
CPC分类号： G01M11/00 , G06F3/0317
摘要： An apparatus for controlling the position of a screen pointer includes an at least partially coherent light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, performing a movement computation based on the digital images, generating movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation has a low sensitivity to effects in the digital images caused by particle contamination.
摘要翻译：用于控制屏幕指针的位置的装置包括用于照射成像表面的至少部分相干的光源，从而产生反射的图像。该装置包括：导航传感器，用于基于反射图像生成数字图像，基于数字图像执行移动计算;基于指示成像表面和装置之间的相对运动的运动计算产生移动数据;其中，运动计算对由颗粒污染引起的数字图像的影响具有低的灵敏度。

4. 发明授权

US08264461B2 Apparatus for controlling the position of a screen pointer with low sensitivity to particle contamination 有权
标题翻译：用于控制对微粒污染的低灵敏度的屏幕指针的位置的装置
公开(公告)号：US08264461B2
公开(公告)日：2012-09-11
申请号：US12060796
申请日：2008-04-01
申请人： Michael J. Brosnan , Ramakrishna Kakarala , Roopinder Singh Grewal , Mark M. Butterworth , Vincent C. Moyer , Tong Xie , Marshall T. Depue
发明人： Michael J. Brosnan , Ramakrishna Kakarala , Roopinder Singh Grewal , Mark M. Butterworth , Vincent C. Moyer , Tong Xie , Marshall T. Depue
IPC分类号： G09G5/08 , G01P3/36
CPC分类号： G01M11/00 , G06F3/0317
摘要： An apparatus for controlling the position of a screen pointer includes an at least partially coherent light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, performing a movement computation based on the digital images, generating movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation has a low sensitivity to effects in the digital images caused by particle contamination.
摘要翻译：用于控制屏幕指针的位置的装置包括用于照射成像表面的至少部分相干的光源，从而产生反射的图像。该装置包括：导航传感器，用于基于反射图像生成数字图像，基于数字图像执行移动计算;基于指示成像表面和装置之间的相对运动的运动计算产生移动数据;其中，运动计算对由颗粒污染引起的数字图像的影响具有低的灵敏度。

5. 发明授权

US07399953B2 Light source control in optical pointing device 有权
标题翻译：光学指向装置中的光源控制
公开(公告)号：US07399953B2
公开(公告)日：2008-07-15
申请号：US11123814
申请日：2005-05-06
申请人： Tong Xie , Ramakrishna Kakarala , Vincent C. Moyer
发明人： Tong Xie , Ramakrishna Kakarala , Vincent C. Moyer
IPC分类号： G06M7/00 , H01J40/14
CPC分类号： G06F3/0317 , G06F3/0383
摘要： An optical pointing device includes a light source configured to respond to a drive current to provide at least partially coherent light to illuminate an imaging surface to thereby generate reflected images. A navigation sensor is configured to generate digital images based on the reflected images, and generate movement data based on the digital images that are indicative of relative motion between the imaging surface and the optical pointing device. A light source driver is configured to provide the drive current to the light source. A drive current controller is configured to calibrate the drive current based on selected digital images.
摘要翻译：光学指向装置包括被配置为响应驱动电流以提供至少部分相干光以照射成像表面从而产生反射图像的光源。导航传感器被配置为基于反射图像产生数字图像，并且基于指示成像表面和光学指向装置之间的相对运动的数字图像生成运动数据。光源驱动器被配置为向光源提供驱动电流。驱动电流控制器被配置为基于所选择的数字图像校准驱动电流。

6. 发明申请

US20050206614A1 Apparatus for controlling the position of a screen pointer with low sensitivity to particle contamination 有权
标题翻译：用于控制对微粒污染的低灵敏度的屏幕指针的位置的装置
公开(公告)号：US20050206614A1
公开(公告)日：2005-09-22
申请号：US10805814
申请日：2004-03-22
申请人： Michael Brosnan , Ramakrishna Kakarala , Roopinder Grewal , Mark Butterworth , Vincent Moyer , Tong Xie , Marshall Depue
发明人： Michael Brosnan , Ramakrishna Kakarala , Roopinder Grewal , Mark Butterworth , Vincent Moyer , Tong Xie , Marshall Depue
IPC分类号： G06F3/042 , G06F3/03 , G06F3/041 , G06K11/06 , G09G5/00
CPC分类号： G01M11/00 , G06F3/0317
摘要： An apparatus for controlling the position of a screen pointer includes an at least partially coherent light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, performing a movement computation based on the digital images, generating movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation has a low sensitivity to effects in the digital images caused by particle contamination.
摘要翻译：用于控制屏幕指针的位置的装置包括用于照射成像表面的至少部分相干的光源，从而产生反射的图像。该装置包括：导航传感器，用于基于反射图像生成数字图像，基于数字图像执行移动计算;基于指示成像表面和装置之间的相对运动的运动计算产生移动数据;其中，运动计算对由颗粒污染引起的数字图像的影响具有低的灵敏度。

7. 发明申请

US20050083303A1 Tracking motion using an interference pattern 有权
标题翻译：使用干涉图案跟踪运动
公开(公告)号：US20050083303A1
公开(公告)日：2005-04-21
申请号：US10687431
申请日：2003-10-16
申请人： Dale Schroeder , Marshall DePue , Ramakrishna Kakarala , Tong Xie , Gregory VanWiggeren
发明人： Dale Schroeder , Marshall DePue , Ramakrishna Kakarala , Tong Xie , Gregory VanWiggeren
IPC分类号： G06F3/041 , G06F3/03 , G06F3/033 , G09G5/08
CPC分类号： G06F3/0317 , G06F3/03545
摘要： A system, method, and device for tracking motion across a surface by creating an interference pattern by reflecting light from the surface. There is produced, as a result of sensor moving across the surface, at least one signal pattern corresponding to a detection of a dimension of the interference pattern. This detected dimension is associated with an assumed dimensional value to determine a distance traveled by the sensor.
摘要翻译：一种用于通过反射来自表面的光产生干涉图案来跟踪表面上的运动的系统，方法和装置。由于传感器在整个表面上移动，所产生的至少一个信号模式对应于干涉图案尺寸的检测。该检测尺寸与假设的尺寸值相关联，以确定传感器行进的距离。

8. 发明申请

US20060255152A1 Light source control in optical pointing device 有权
标题翻译：光学指向装置中的光源控制
公开(公告)号：US20060255152A1
公开(公告)日：2006-11-16
申请号：US11123814
申请日：2005-05-06
申请人： Tong Xie , Ramakrishna Kakarala , Vincent Moyer
发明人： Tong Xie , Ramakrishna Kakarala , Vincent Moyer
IPC分类号： G06K7/10 , G06M7/00 , H01J40/14
CPC分类号： G06F3/0317 , G06F3/0383
摘要： An optical pointing device includes a light source configured to respond to a drive current to provide at least partially coherent light to illuminate an imaging surface to thereby generate reflected images. A navigation sensor is configured to generate digital images based on the reflected images, and generate movement data based on the digital images that is indicative of relative motion between the imaging surface and the optical pointing device. A light source driver is configured to provide the drive current to the light source. A drive current controller is configured to calibrate the drive current based on selected digital images.
摘要翻译：光学指向装置包括被配置为响应驱动电流以提供至少部分相干光以照射成像表面从而产生反射图像的光源。导航传感器被配置为基于反射的图像生成数字图像，并且基于指示成像表面和光学指向装置之间的相对运动的数字图像来生成移动数据。光源驱动器被配置为向光源提供驱动电流。驱动电流控制器被配置为基于所选择的数字图像校准驱动电流。

9. 发明授权

US07974489B2 Buffer management for an adaptive buffer value using accumulation and averaging 有权
标题翻译：使用累加和平均的自适应缓冲区值的缓冲区管理
公开(公告)号：US07974489B2
公开(公告)日：2011-07-05
申请号：US11755646
申请日：2007-05-30
申请人： Ramakrishna Kakarala , Alexander C. Schneider
发明人： Ramakrishna Kakarala , Alexander C. Schneider
IPC分类号： G06K9/40 , G06K9/20
CPC分类号： H04N5/772 , H04N5/23245 , H04N5/23248 , H04N5/907
摘要： An optical imaging system with dynamic buffer management is described. Embodiments of the optical imaging system include an image sensor, a buffer, and a buffer mode controller. The image sensor includes a pixel array to read out a plurality of pixel lines for a frame of an image. The buffer is configured to store a plurality of buffer values corresponding to a plurality of pixel values for each of the pixel lines. The buffer mode controller is configured to dynamically switch between an accumulation mode and an averaging mode. The accumulation mode facilitates a computation of each buffer value according to a sum value of the corresponding pixel value and a corresponding previous buffer value. The averaging mode facilitates a computation of each buffer value according to an average value of a normalized value of the corresponding pixel value and the corresponding previous buffer value.
摘要翻译：描述了具有动态缓冲器管理的光学成像系统。光学成像系统的实施例包括图像传感器，缓冲器和缓冲模式控制器。图像传感器包括用于读出用于图像帧的多个像素线的像素阵列。缓冲器被配置为存储与每个像素线对应的多个像素值的多个缓冲器值。缓冲模式控制器被配置为在累加模式和平均模式之间动态切换。累加模式有助于根据相应像素值和对应的先前缓冲器值的和值来计算每个缓冲器值。平均模式有助于根据对应的像素值和对应的先前缓冲器值的归一化值的平均值来计算每个缓冲器值。

10. 发明授权

US07969410B2 Optically detecting click events 有权
标题翻译：光学检测点击事件
公开(公告)号：US07969410B2
公开(公告)日：2011-06-28
申请号：US11508685
申请日：2006-08-23
申请人： Ramakrishna Kakarala
发明人： Ramakrishna Kakarala
IPC分类号： G09G5/00
CPC分类号： G06F3/042
摘要： Apparatus and method of optically detecting click events are described. Images of a contact surface are captured at respective capture times. The captured images are convolved with a two-dimensional circularly symmetric spatial bandpass filter to produce corresponding filtered images each including a set of pixels with respective pixel value magnitudes. Based on the pixel value magnitudes of the corresponding filtered images, each of the capture times is assigned to one of an in-contact time class during which the contact surface is determined to be in-contact with a user's finger and an out-of-contact time class during which the contact surface is determined to be out-of-contact with the user's finger. A select signal indicating that the contact surface has been touched to make a selection is generated based on a click event predicate defining at least one condition on the time classes respectively assigned to successive ones of the capture times.
摘要翻译：描述了光学检测点击事件的装置和方法。在各自的捕获时间捕获接触表面的图像。捕获的图像与二维圆形对称空间带通滤波器卷积以产生相应的滤波图像，每个滤波图像包括具有相应像素值幅度的一组像素。基于对应的滤波图像的像素值大小，将每个捕获时间分配给接触时间等级中的一个，在此期间接触表面被确定为与用户的手指接触，接触时间等级，其中确定接触表面与使用者的手指不接触。基于点分割事件谓词生成指示接触面已经被触摸以进行选择的选择信号，所述点击事件谓词定义了分配给相继捕获时间的时间类上的至少一个条件。

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