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1. 发明授权

US08780045B2 Optical navigation with a dynamic SQUAL threshold 有权
标题翻译：具有动态SQUAL阈值的光学导航
公开(公告)号：US08780045B2
公开(公告)日：2014-07-15
申请号：US12950939
申请日：2010-11-19
申请人： Willie Song , Siew Chin Lee , Keng Yeen Lye
发明人： Willie Song , Siew Chin Lee , Keng Yeen Lye
IPC分类号： G06F3/033 , G09G5/08
CPC分类号： G06F3/038 , G06F3/0317
摘要： A system and method for tracking movement between a surface and an optical navigation device are described. In an embodiment, the optical navigation device has an image sensor that includes an array of pixels and motion tracking involves acquiring image information, the image information including pixel values that correspond to the pixels, calculating a surface quality (SQUAL) value from the image information, determining a level of saturation of the pixel array from pixel values of the image information, comparing the determined level of saturation of the pixel array to a saturation threshold, increasing a SQUAL threshold if the determined level of saturation of the pixel array is greater than the saturation threshold, and deciding whether or not to output motion tracking information in response to a comparison of the SQUAL value to the SQUAL threshold. Other embodiments of the method are also described.
摘要翻译：描述了用于跟踪表面和光学导航装置之间的移动的系统和方法。在一个实施例中，光学导航装置具有图像传感器，其包括像素阵列，运动跟踪涉及获取图像信息，所述图像信息包括与像素对应的像素值，从图像信息计算表面质量（SQUAL）值从所述图像信息的像素值确定像素阵列的饱和度水平，将所确定的所述像素阵列的饱和度与饱和阈值进行比较，如果所确定的所述像素阵列的饱和度水平大于所述阈值，则增加SQUAL阈值饱和阈值，并且响应于SQUAL值与SQUAL阈值的比较来决定是否输出运动跟踪信息。还描述了该方法的其他实施例。

2. 发明申请

US20120127076A1 OPTICAL NAVIGATION WITH A DYNAMIC SQUAL THRESHOLD 有权
标题翻译：具有动态平均阈值的光学导航
公开(公告)号：US20120127076A1
公开(公告)日：2012-05-24
申请号：US12950939
申请日：2010-11-19
申请人： Willie Song , Siew Chin Lee , Keng Yeen Lye
发明人： Willie Song , Siew Chin Lee , Keng Yeen Lye
IPC分类号： G06F3/033
CPC分类号： G06F3/038 , G06F3/0317
摘要： A system and method for tracking movement between a surface and an optical navigation device are described. In an embodiment, the optical navigation device has an image sensor that includes an array of pixels and motion tracking involves acquiring image information, the image information including pixel values that correspond to the pixels, calculating a surface quality (SQUAL) value from the image information, determining a level of saturation of the pixel array from pixel values of the image information, comparing the determined level of saturation of the pixel array to a saturation threshold, increasing a SQUAL threshold if the determined level of saturation of the pixel array is greater than the saturation threshold, and deciding whether or not to output motion tracking information in response to a comparison of the SQUAL value to the SQUAL threshold. Other embodiments of the method are also described.
摘要翻译：描述了用于跟踪表面和光学导航装置之间的移动的系统和方法。在一个实施例中，光学导航装置具有图像传感器，其包括像素阵列，运动跟踪涉及获取图像信息，所述图像信息包括与像素对应的像素值，从图像信息计算表面质量（SQUAL）值从所述图像信息的像素值确定像素阵列的饱和度水平，将所确定的所述像素阵列的饱和度与饱和阈值进行比较，如果所确定的所述像素阵列的饱和度水平大于所述阈值，则增加SQUAL阈值饱和阈值，并且响应于SQUAL值与SQUAL阈值的比较来决定是否输出运动跟踪信息。还描述了该方法的其他实施例。

3. 发明授权

US08537109B2 System and method for automatically adjusting light source drive current during optical navigation operation 有权
标题翻译：在光学导航操作期间自动调节光源驱动电流的系统和方法
公开(公告)号：US08537109B2
公开(公告)日：2013-09-17
申请号：US12466279
申请日：2009-05-14
申请人： Andy Beng Chye Lye , Siew Chin Lee , Suk Lai Yap
发明人： Andy Beng Chye Lye , Siew Chin Lee , Suk Lai Yap
IPC分类号： G06F3/033 , G09G5/00 , H04N5/228
CPC分类号： G06F3/0317 , G06F3/03543 , G06F3/038
摘要： A system and method for automatically adjusting a drive current to a light source during an optical navigation operation uses brightness characteristics of captured frames of image data to determine whether each of the frames of image data belongs to one of at least first and second types of frames of image data. The drive current is adjusted depending on counts of the frames of image data belonging to the first and second types of frames of image data.
摘要翻译：用于在光学导航操作期间自动调节到光源的驱动电流的系统和方法使用所捕获的图像数据帧的亮度特性来确定图像数据的每个帧是否属于至少第一和第二类型的帧中的一个的图像数据。驱动电流根据属于第一和第二类图像数据的图像数据的帧的计数而被调整。

4. 发明申请

US20100289745A1 SYSTEM AND METHOD FOR AUTOMATICALLY ADJUSTING LIGHT SOURCE DRIVE CURRENT DURING OPTICAL NAVIGATION OPERATION 有权
标题翻译：在光学导航操作期间自动调节光源驱动电流的系统和方法
公开(公告)号：US20100289745A1
公开(公告)日：2010-11-18
申请号：US12466279
申请日：2009-05-14
申请人： Andy Beng Chye Lye , Siew Chin Lee , Suk Lai Yap
发明人： Andy Beng Chye Lye , Siew Chin Lee , Suk Lai Yap
IPC分类号： G06F3/033
CPC分类号： G06F3/0317 , G06F3/03543 , G06F3/038
摘要： A system and method for automatically adjusting a drive current to a light source during an optical navigation operation uses brightness characteristics of captured frames of image data to determine whether each of the frames of image data belongs to one of at least first and second types of frames of image data. The drive current is adjusted depending on counts of the frames of image data belonging to the first and second types of frames of image data.
摘要翻译：用于在光学导航操作期间自动调节到光源的驱动电流的系统和方法使用所捕获的图像数据帧的亮度特征来确定图像数据的每个帧是否属于至少第一和第二类型的帧中的一个的图像数据。驱动电流根据属于第一和第二类图像数据的图像数据的帧的计数而被调整。

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