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公开(公告)号：US10310674B2
公开(公告)日：2019-06-04
申请号：US14806388
申请日：2015-07-22
发明人： Terry Gilton , Victor Lenchenkov , Brian W. Keelan
摘要： In one form, a touch screen includes an optically transmissive medium, first and second light sources, a detection circuit, and a control circuit. The first light source is positioned to emit light across the optically transmissive medium in a first direction, and the second light source is positioned to emit light across the optically transmissive medium in a second direction orthogonal to the first direction. The detection circuit detects standing wave patterns of light emitted by the first and second light sources along the first and second directions. The control circuit is coupled to the detection circuit and measures a first standing wave pattern in an untouched condition, and a second standing wave pattern in a touched condition. The control circuit detects a touch location in response to a difference between the first standing wave pattern and the second standing wave pattern.
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2.发明授权High dynamic range imaging systems having differential photodiode exposures 有权具有差分光电二极管曝光的高动态范围成像系统公开(公告)号：US09467633B2
公开(公告)日：2016-10-11
申请号：US14633837
申请日：2015-02-27
CPC分类号： H04N5/355 , H04N5/35563 , H04N5/3559 , H04N5/3696 , H04N5/37457 , H04N5/378 , H04N9/045
摘要： Image sensors may include an array of photodiodes arranged in groups of adjacent photodiodes that generate charge in response to same-colored light. The image sensor may generate high-dynamic-range (HDR) images. To establish an effective exposure ratio between sets of photodiodes on the array for generating HDR images, microlenses may be formed over some photodiodes in a checkerboard pattern and may have portions that extend over other photodiodes in the array. Control circuitry may control photodiodes in each group to perform pulsed integration in which charge transfer control signals are intermittently pulsed for those photodiodes. A substantially opaque element may be formed over photodiodes in each of the groups such that the corresponding photodiodes generate signals in response to crosstalk. In this way, different effective exposures may be established across the array, allowing for HDR images to be generated without motion artifacts and with super-pixel resolution.
摘要翻译： 图像传感器可以包括被布置成响应于相同颜色的光产生电荷的相邻光电二极管的组的光电二极管阵列。 图像传感器可以产生高动态范围（HDR）图像。 为了在阵列上建立用于生成HDR图像的光电二极管组之间的有效曝光比，可以在棋盘图案中的一些光电二极管上形成微透镜，并且可以具有在阵列中的其它光电二极管上延伸的部分。 控制电路可以控制每组中的光电二极管来执行脉冲积分，其中对于那些光电二极管，电荷转移控制信号被间歇地脉冲。 可以在每个组中的光电二极管上形成基本上不透明的元件，使得相应的光电二极管响应于串扰而产生信号。 以这种方式，可以在阵列之间建立不同的有效曝光，从而可以生成HDR图像，而不会产生运动伪像和超像素分辨率。
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