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1. 发明授权

US09237270B2 Auto-focus image system 有权
标题翻译：自动对焦图像系统
公开(公告)号：US09237270B2
公开(公告)日：2016-01-12
申请号：US14596247
申请日：2015-01-14
申请人： Hiok Nam Tay
发明人： Hiok Nam Tay
IPC分类号： H04N5/232 , G06T5/00
CPC分类号： H04N5/23212 , G06T5/003
摘要： An auto focus image system that includes a pixel array coupled to a focus signal generator. The pixel array captures an image that has at least one edge with a width. The focus signal generator may generate a focus signal that is a function of the edge width and/or statistics of edge widths. A processor receives the focus signal and/or the statistics of edge widths and adjust a focus position of a focus lens. The edge width can be determined by various techniques including the use of gradients. A histogram of edge widths may be used to determine whether a particular image is focused or unfocused. A histogram with a large population of thin edge widths is indicative of a focused image. Edge corruption/partial corruption may be detected. Partially corrupted edge may have edge width calculated by relying more on the side that is not corrupted and less on the side that is corrupted. Edge or edge side corruption may be detected by detecting a presence of an adjacent edge of the opposite sign.
摘要翻译：一种自动聚焦图像系统，包括耦合到聚焦信号发生器的像素阵列。像素阵列捕获至少具有一个具有宽度的边的图像。聚焦信号发生器可以产生作为边缘宽度和/或边缘宽度统计的函数的聚焦信号。处理器接收聚焦信号和/或边缘宽度的统计量并调整聚焦透镜的聚焦位置。边缘宽度可以通过各种技术来确定，包括使用梯度。可以使用边缘宽度的直方图来确定特定图像是聚焦还是未聚焦。具有大量细边缘宽度的直方图表示聚焦图像。可能检测到边缘损坏/部分损坏。部分损坏的边缘可能通过更多地依赖于未损坏的边而在损坏的边上更少地计算边缘宽度。可以通过检测相反符号的相邻边缘的存在来检测边缘或边缘损坏。

2. 发明申请

US20150317774A1 AUTO-FOCUS IMAGE SYSTEM 审中-公开
标题翻译：自动对焦图像系统
公开(公告)号：US20150317774A1
公开(公告)日：2015-11-05
申请号：US14635046
申请日：2015-03-02
申请人： Hiok Nam TAY
发明人： Hiok Nam TAY
IPC分类号： G06T5/00 , H04N5/232 , G06T7/00 , G02B7/36 , G06K9/46
CPC分类号： G06T5/003 , G02B7/36 , G03B13/36 , G06K9/4604 , G06T2207/10004 , H04N5/23212 , H04N5/23293 , H04N5/3696
摘要： An auto-focus image system includes a focus signal generator and a pixel array coupled thereto that captures an image that includes a plurality of edges. The generator computes a focus signal from a plurality of edge-sharpness measures, each measured from and contributed by a different edge as a quantity with a unit that is a power of a unit of length, such as a distance in the edge, an area, or an even-order central moment. A relative weight of the contribution by an edge is reduced depending on at least a pair of shape measures, each being computed from a plurality of sample-pair differences of the edge. One may be the edge-sharpness measure. The weight may be zero if the pair of shape measures falls outside a predetermined region. At least one symmetrical sequence of gradients exists such that an edge with it has reduced relative weight.
摘要翻译：自动对焦图像系统包括聚焦信号发生器和耦合到其上的像素阵列，其捕获包括多个边缘的图像。发电机从多个边缘锐度测量中计算聚焦信号，每个边缘锐度测量由不同边缘测量并由其贡献，作为具有单位长度的单位的量，例如边缘的距离，区域，或偶数中心时刻。取决于至少一对形状测量，边缘的贡献的相对权重由边缘的多个采样对差计算。一个可能是边缘锐度度量。如果一对形状测量值落在预定区域之外，则重量可以为零。存在至少一个对称的梯度序列，使得具有它的边缘具有减小的相对重量。

3. 发明授权

US09055246B2 Noise-cancelling image sensors 有权
标题翻译：降噪图像传感器
公开(公告)号：US09055246B2
公开(公告)日：2015-06-09
申请号：US14280613
申请日：2014-05-18
申请人： Hiok Nam Tay
发明人： Hiok Nam Tay
IPC分类号： H04N5/335 , H04N5/217 , H04N5/357 , H01L27/146 , H04N5/363
CPC分类号： H04N5/357 , H01L27/14603 , H04N5/2173 , H04N5/363
摘要： An image sensor that has a plurality of pixels within a pixel array coupled to a control circuit and to one or more subtraction circuits. The control circuit causes an output transistor coupled to a pixel to provide a first reference output signal, a common reset output signal, and a first sense-node reset output signal, between which a subtraction circuit may form a weighted difference to create a noise signal. The control circuit causes the output transistor to provide a second sense-node reset output signal, a light response output signal and a second reference output signal, between which a subtraction circuit may form a weighted difference to create a normalized light response signal. The light response output signal corresponds to the image that is to be captured by the sensor. The noise signal is subtracted from the normalized light response signal to generate a de-noised signal.
摘要翻译：一种图像传感器，其具有耦合到控制电路和一个或多个减法电路的像素阵列内的多个像素。控制电路使得耦合到像素的输出晶体管提供第一参考输出信号，公共复位输出信号和第一感测节点复位输出信号，减法电路可以形成加权差以产生噪声信号。控制电路使得输出晶体管提供第二感测节点复位输出信号，光响应输出信号和第二参考输出信号，减法电路可以在其之间形成加权差以产生归一化的光响应信号。光响应输出信号对应于要由传感器捕获的图像。从归一化光响应信号中减去噪声信号以产生去噪信号。

4. 发明申请

US20140333803A1 NOISE-CANCELLING IMAGE SENSORS 审中-公开
标题翻译：噪声消除图像传感器
公开(公告)号：US20140333803A1
公开(公告)日：2014-11-13
申请号：US14280613
申请日：2014-05-18
申请人： Hiok Nam TAY
发明人： Hiok Nam TAY
IPC分类号： H04N5/357 , H04N5/217
CPC分类号： H04N5/357 , H01L27/14603 , H04N5/2173 , H04N5/363
摘要： An image sensor that has a plurality of pixels within a pixel array coupled to a control circuit and to one or more subtraction circuits. The control circuit causes an output transistor coupled to a pixel to provide a first reference output signal, a common reset output signal, and a first sense-node reset output signal, between which a subtraction circuit may form a weighted difference to create a noise signal. The control circuit causes the output transistor to provide a second sense-node reset output signal, a light response output signal and a second reference output signal, between which a subtraction circuit may form a weighted difference to create a normalized light response signal. The light response output signal corresponds to the image that is to be captured by the sensor. The noise signal is subtracted from the normalized light response signal to generate a de-noised signal.
摘要翻译：一种图像传感器，其具有耦合到控制电路和一个或多个减法电路的像素阵列内的多个像素。控制电路使得耦合到像素的输出晶体管提供第一参考输出信号，公共复位输出信号和第一感测节点复位输出信号，减法电路可以形成加权差以产生噪声信号。控制电路使得输出晶体管提供第二感测节点复位输出信号，光响应输出信号和第二参考输出信号，减法电路可以在其之间形成加权差以产生归一化的光响应信号。光响应输出信号对应于要由传感器捕获的图像。从归一化光响应信号中减去噪声信号以产生去噪信号。

5. 发明授权

US08866945B2 Color image sampling and reconstruction 有权
标题翻译：彩色图像采样和重建
公开(公告)号：US08866945B2
公开(公告)日：2014-10-21
申请号：US13244336
申请日：2011-09-24
申请人： Hiok Nam Tay
发明人： Hiok Nam Tay
IPC分类号： H04N9/083 , H01L27/146 , H04N9/04
CPC分类号： H01L27/14643 , H01L27/1461 , H01L27/14621 , H01L27/14627 , H01L27/14647 , H01L27/14689 , H04N9/045 , H04N2209/047
摘要： An image capture apparatus that includes an array of color filters for green, red, and magenta colors arranged over a semiconductor substrate in the manner of a primary color Bayer pattern except a magenta color replaces the blue color. Light passing through the magenta color filter is integrated separately in a magenta pixel for a shallow photodiode signal and a deep photodiode signal in a first photodiode and a deeper second photodiode in the substrate, respectively. A mezzanine photodiode may be disposed between the first and second photodiodes and held at a fixed voltage level or reset multiple times during charge integration. A red pixel value for the magenta pixel is a function of the deep photodiode signal and an adjacent red pixel's red pixel signal. A minimum exists in its derivative with respect to the former at a value of the former that varies with the latter.
摘要翻译：包括以除了品红色以外的原色拜耳图案的方式布置在半导体基板上的绿色，红色和品红色的滤色器阵列的图像捕获装置代替蓝色。通过品红色滤色器的光分别集成在品红色像素中，用于分别在基板中的第一光电二极管和深二极管中的浅光电二极管信号和深光电二极管信号。夹层光电二极管可以设置在第一和第二光电二极管之间，并且在电荷积分期间保持在固定的电压电平或复位多次。品红色像素的红色像素值是深度光电二极管信号和相邻的红色像素的红色像素信号的函数。其前者的衍生品的最小值与前者的值相差不大。

6. 发明授权

US08457431B2 Auto-focus image system 失效
标题翻译：自动对焦图像系统
公开(公告)号：US08457431B2
公开(公告)日：2013-06-04
申请号：US12961826
申请日：2010-12-07
申请人： Hiok Nam Tay
发明人： Hiok Nam Tay
IPC分类号： G06K9/40 , H04N5/232
CPC分类号： G06T5/003 , G02B7/36 , G03B13/36 , G06K9/4604 , G06T2207/10004 , H04N5/23212 , H04N5/23293 , H04N5/3696
摘要： An auto focus image system that includes a pixel array coupled to a focus signal generator. The pixel array captures an image that has at least one edge with a width. The focus signal generator may generate a focus signal that is a function of the edge width and/or statistics of edge widths. A processor receives the focus signal and/or the statistics of edge widths and adjusts a focus position of a focus lens. The edge width can be determined by various techniques including the use of gradients. A histogram of edge widths may be used to determine whether a particular image is focused or unfocused. A histogram with a large population of thin edge widths is indicative of a focused image. The generator may eliminate an edge having an asymmetry of a gradient profile of an image signal.
摘要翻译：一种自动聚焦图像系统，包括耦合到聚焦信号发生器的像素阵列。像素阵列捕获至少具有一个具有宽度的边的图像。聚焦信号发生器可以产生作为边缘宽度和/或边缘宽度统计的函数的聚焦信号。处理器接收对焦信号和/或边缘宽度的统计，并调整聚焦透镜的聚焦位置。边缘宽度可以通过各种技术来确定，包括使用梯度。可以使用边缘宽度的直方图来确定特定图像是聚焦还是未聚焦。具有大量细边缘宽度的直方图表示聚焦图像。发生器可以消除具有图像信号的梯度分布的不对称性的边缘。

7. 发明授权

US08451348B2 Noise-cancelling image sensors 有权
公开(公告)号：US08451348B2
公开(公告)日：2013-05-28
申请号：US12639941
申请日：2009-12-16
申请人： Hiok Nam Tay
发明人： Hiok Nam Tay
IPC分类号： H04N5/335 , H04N5/217
CPC分类号： H04N5/357 , H01L27/14603 , H04N5/2173 , H04N5/363
摘要： An image sensor that has a plurality of pixels within a pixel array coupled to a control circuit and to one or more subtraction circuits. The control circuit may cause an output transistor coupled to a pixel to provide a first reference output signal, a common reset output signal, and a first sense-node reset output signal, between which a subtraction circuit may form a weighted difference to create a noise signal. The control circuit may cause the output transistor to provide a second sense-node reset output signal, a light response output signal and a second reference output signal, between which a subtraction circuit may form a weighted difference to create a normalized light response signal. The light response output signal corresponds to the image that is to be captured by the sensor. The noise signal may be subtracted from the normalized light response signal to generate a de-noised signal.

8. 发明申请

US20130034927A1 LIGHT GUIDE ARRAY FOR AN IMAGE SENSOR 审中-公开
标题翻译：图像传感器的光导向阵列
公开(公告)号：US20130034927A1
公开(公告)日：2013-02-07
申请号：US13649137
申请日：2012-10-11
申请人： Hiok-Nam TAY , Thanh-Trung DO
发明人： Hiok-Nam TAY , Thanh-Trung DO
IPC分类号： H01L31/18
CPC分类号： H01L27/14625 , H01L27/14621 , H01L27/14623 , H01L27/14629 , H01L27/14643 , H01L27/14685 , H01L27/14687
摘要： An image sensor pixel that includes a photoelectric conversion unit supported by a substrate and an insulator adjacent to the substrate. The pixel includes a cascaded light guide that is located within an opening of the insulator and extends above the insulator such that a portion of the cascaded light guide has an air interface. The air interface improves the internal reflection of the cascaded light guide. The cascaded light guide may include a self-aligned color filter having air-gaps between adjacent color filters. These characteristics of the light guide eliminate the need for a microlens. Additionally, an anti-reflection stack is interposed between the substrate and the light guide to reduce backward reflection from the image sensor. Two pixels of having different color filters may have a difference in the thickness of an anti-reflection film within the anti-reflection stack.
摘要翻译：一种图像传感器像素，包括由基板支撑的光电转换单元和与基板相邻的绝缘体。像素包括位于绝缘体的开口内并在绝缘体上方延伸的级联光导，使得级联光导的一部分具有空气界面。空气界面改善了级联光导的内部反射。级联的光导可以包括在相邻滤色器之间具有气隙的自对准滤色器。光导的这些特性消除了微透镜的需要。此外，在基板和光导之间插入防反射叠层以减少来自图像传感器的反向反射。具有不同滤色器的两个像素可以在抗反射叠层内的抗反射膜的厚度上具有差异。

9. 发明申请

US20120314960A1 AUTO-FOCUS IMAGE SYSTEM 审中-公开
标题翻译：自动对焦图像系统
公开(公告)号：US20120314960A1
公开(公告)日：2012-12-13
申请号：US13492825
申请日：2012-06-09
申请人： Hiok Nam TAY
发明人： Hiok Nam TAY
IPC分类号： G06K9/48
CPC分类号： G06T5/003 , G02B7/36 , G03B13/36 , G06K9/4604 , G06T2207/10004 , H04N5/23212 , H04N5/23293 , H04N5/3696
摘要： An auto-focus image system includes a focus signal generator and a pixel array coupled thereto that captures an image that includes a plurality of edges. The generator computes a focus signal from a plurality of edge-sharpness measures, each measured from and contributed by a different edge as a quantity with a unit that is a power of a unit of length, such as a distance in the edge, an area, or an even-order central moment. A relative weight of the contribution by an edge is reduced depending on at least a pair of shape measures, each being computed from a plurality of sample-pair differences of the edge. One may be the edge-sharpness measure. The weight may be zero if the pair of shape measures falls outside a predetermined region. At least one symmetrical sequence of gradients exists such that an edge with it has reduced relative weight.
摘要翻译：自动对焦图像系统包括聚焦信号发生器和耦合到其上的像素阵列，其捕获包括多个边缘的图像。发电机从多个边缘锐度测量中计算聚焦信号，每个边缘锐度测量由不同边缘测量并由其贡献，作为具有单位长度的单位的量，例如边缘的距离，区域，或偶数中心时刻。取决于至少一对形状测量，边缘的贡献的相对权重由边缘的多个采样对差计算。一个可能是边缘锐度度量。如果一对形状测量值落在预定区域之外，则重量可以为零。存在至少一个对称的梯度序列，使得具有它的边缘具有减小的相对重量。

10. 发明申请

US20120242856A1 AUTO-FOCUS IMAGE SYSTEM 审中-公开
标题翻译：自动对焦图像系统
公开(公告)号：US20120242856A1
公开(公告)日：2012-09-27
申请号：US13430684
申请日：2012-03-26
申请人： Hiok Nam Tay
发明人： Hiok Nam Tay
IPC分类号： H04N5/232
CPC分类号： H04N5/23212 , G01S3/782 , G01S3/7864 , G02B7/36
摘要： An auto focus image system that includes a pixel array coupled to a focus signal generator. The pixel array captures an image that has a plurality of edges. The generator generates a focus signal that is a function of a plurality of edge-sharpness measures for the plurality of edges. The generator compares a sequence of gradients across the edge with one or more reference sequences of gradients and/or reference curves defined by data retrieved from a non-volatile memory. The generator may reject or de-emphasize the edge using result of the comparison. The edge sharpness measure is a quantity whose unit is a positive or negative, integer or non-integer power of a unit of length. It may be measured from the edge and/or a reference sequence/curve matched to the edge, or may be retrieved for the matched reference sequence/curve from a non-volatile memory.
摘要翻译：一种自动聚焦图像系统，包括耦合到聚焦信号发生器的像素阵列。像素阵列捕获具有多个边缘的图像。发生器产生作为多个边缘的多个边缘锐度度量的函数的聚焦信号。发生器将跨越边缘的梯度序列与由非易失性存储器检索的数据定义的一个或多个梯度参考序列和/或参考曲线进行比较。发生器可以使用比较结果来拒绝或不强调边缘。边缘清晰度度量是一个单位是单位长度的正或负，整数或非整数幂的数量。可以从与边缘匹配的边缘和/或参考序列/曲线测量，或者可以从非易失性存储器检索匹配的参考序列/曲线。

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