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1. 发明授权

US10897592B1 Combined programmable gain amplifier and comparator for low power and low area readout in image sensor 有权
公开(公告)号：US10897592B1
公开(公告)日：2021-01-19
申请号：US16572580
申请日：2019-09-16
申请人： Foveon, Inc.
发明人： SundaraSiva Rao Giduturi , Glenn Jay Keller
IPC分类号： H04N5/378 , H03F3/45 , H03G3/30
摘要： A switchable amplifier and comparator circuit includes an operational amplifier having an inverting input, a non-inverting input, a first differential output and a second differential output, the first differential output switchably coupled to the inverting input and the second differential output switchably coupled to the non-inverting input. A first feedback capacitor is coupled to the inverting input and switchably coupled to the first differential output, a second feedback capacitor is coupled to the non-inverting input and switchably coupled to the second differential output. A capacitive load is switchably coupled between the first differential output and the second differential output. A diode clamp circuit is switchably coupled between the first differential output and the second differential output. A resistive load is switchably coupled between the first differential output and the second differential output.

2. 发明授权

US10523885B2 Column line clamp circuit for imaging array 有权
公开(公告)号：US10523885B2
公开(公告)日：2019-12-31
申请号：US15492951
申请日：2017-04-20
申请人： Foveon, Inc.
发明人： Sudipta Saha , Shivani Gupta
IPC分类号： H04N5/378 , H04N5/16 , H04N5/18 , H04N5/359
摘要： In an imaging array having a plurality of pixel sensors arranged in a plurality of rows and columns, pixel data being read out on column lines of the array, a column line voltage clamp circuit for column lines of the array includes a master voltage clamp circuit coupled to provide a reference voltage clamp level on a reference node, and a slave voltage clamp circuit coupled to each column line in the imaging array, each slave voltage clamp circuit configured to clamp voltage on the column line to a column voltage clamp level derived from the reference voltage level.

3. 发明授权

US10178322B2 Method of adjusting digital camera image processing parameters 有权
公开(公告)号：US10178322B2
公开(公告)日：2019-01-08
申请号：US15097619
申请日：2016-04-13
申请人： Foveon, Inc.
发明人： Rastislav Lukac
IPC分类号： H04N5/235 , G06T1/20
摘要： A method for adjusting predetermined ISO-dependent image processing parameters for images captured by a digital camera includes measuring the exposure deviation in exposure units from an optimal exposure as determined by the camera during an image capture process, deriving an estimated camera sensitivity from the exposure deviation, and adjusting the ISO-dependent image processing parameters for images captured by the camera as a function of the derived estimated camera sensitivity.

4. 发明授权

US09191556B2 Imaging array having photodiodes with different light sensitivities and associated image restoration methods 有权
标题翻译：具有不同光敏度和相关图像恢复方法的光电二极管成像阵列
公开(公告)号：US09191556B2
公开(公告)日：2015-11-17
申请号：US13550436
申请日：2012-07-16
申请人： Rastislav Lukac , Shri Ramaswami , Sanghoon Bae
发明人： Rastislav Lukac , Shri Ramaswami , Sanghoon Bae
IPC分类号： H01L27/146 , H04N5/355 , H04N9/04 , H04N5/217
CPC分类号： H04N5/35563 , H01L27/14623 , H01L27/14627 , H04N5/2173 , H04N9/045
摘要： A pixel sensor array includes a plurality of pixel sensors having a first gain and a plurality of pixel sensors having a second gain less than the first gain.
摘要翻译：像素传感器阵列包括具有第一增益的多个像素传感器和具有小于第一增益的第二增益的多个像素传感器。

5. 发明申请

US20140321742A1 Method for Processing Highlights and Saturated Regions in a Digital Image 有权
公开(公告)号：US20140321742A1
公开(公告)日：2014-10-30
申请号：US14168155
申请日：2014-01-30
申请人： Foveon, Inc.
发明人： Rastislav Lukac , Ken Doyle
IPC分类号： G06T5/00 , H04N9/68 , H04N9/64
CPC分类号： G06T5/008 , G06K9/40 , G06T5/001 , G06T2207/10024 , G06T2207/20172 , H04N9/646 , H04N9/68
摘要： A method for performing highlight restoration on a digital image includes comparing the pixels in the image with a saturation level value to identify saturated pixels. A saturation map of saturated pixels is generated. Each selected saturated pixel is identified as a restorable pixel only if at least one color channel of the pixel is unsaturated. For each restorable pixel, a group of the closest unsaturated pixels above, below, to the left, and to the right of the select saturated pixel is identified. A replacement pixel value is generated for each saturated color channel of the restorable pixel, using a combination of the pixel values of the unsaturated color channels of the restorable pixel and the pixel values of the corresponding color channels of the nearby unsaturated pixels.

6. 发明授权

US08687885B2 Methods for reducing row and column patterns in a digital image 有权
标题翻译：减少数字图像中行和列模式的方法
公开(公告)号：US08687885B2
公开(公告)日：2014-04-01
申请号：US13473287
申请日：2012-05-16
申请人： Alireza Yasan , Rastislav Lukac
发明人： Alireza Yasan , Rastislav Lukac
IPC分类号： G06K9/00
CPC分类号： G06T5/002 , G06K9/40
摘要： A method for performing column/row pattern suppression in a digital input image includes creating a smoothed version of the input image by averaging a set of columns/rows neighboring around the column/row being corrected. A difference image is constructed by subtracting the smoothed image from the input image. New column/row intensities are computed from the difference image. An output image is constructed with suppressed column/row patterns by subtracting the new column/row intensities from the input image.
摘要翻译：用于在数字输入图像中执行列/行图案抑制的方法包括通过对正在校正的列/行周围的相邻列/行进行平均来创建输入图像的平滑版本。通过从输入图像中减去平滑图像来构造差分图像。根据差分图像计算新列/行强度。输出图像通过从输入图像中减去新的列/行强度来构造具有抑制的列/行图案。

7. 发明授权

US07796172B1 Method and apparatus for eliminating image artifacts due to defective imager columns and rows 有权
标题翻译：用于消除由于有缺陷的成像器列和行引起的图像伪像的方法和装置
公开(公告)号：US07796172B1
公开(公告)日：2010-09-14
申请号：US10794703
申请日：2004-03-04
申请人： Timothy M. Slagle , Robert S. Hannebauer , Richard B. Merrill , Peter J. Manca
发明人： Timothy M. Slagle , Robert S. Hannebauer , Richard B. Merrill , Peter J. Manca
IPC分类号： H04N3/14 , H04N5/335
CPC分类号： H04N5/367 , H04N5/374 , H04N5/378
摘要： In a readout bus architecture having a first column, a readout means is coupled to a photodetector and configured to transfer charge from the photodetector. A select means is coupled to the photodetector and is configured to transfer charge from the photodetector. An address circuit is coupled to the first column through the select means and is configured to generate and decode an address and turn on the select means for the first column if the address matched the first column and if the address circuit received a corrected enable signal indicating that the first column is not defective. A correction circuit is coupled to the address circuit and is configured to generate the corrected enable signal indicating that the first column is not defective if the correction circuit determined that the first column is not defective.
摘要翻译：在具有第一列的读出总线架构中，读出装置耦合到光电检测器并且被配置为从光电检测器传送电荷。选择装置耦合到光电检测器并且被配置为从光电检测器传送电荷。地址电路通过选择装置耦合到第一列，并被配置为产生和解码地址，并且如果地址与第一列匹配，则接通第一列的选择装置，并且如果地址电路接收到校正的使能信号，指示第一列没有缺陷。校正电路耦合到地址电路，并且被配置为如果校正电路确定第一列没有缺陷，则生成指示第一列不是有缺陷的校正的使能信号。

8. 发明申请

US20100155576A1 MULTI-COLOR CMOS PIXEL SENSOR WITH SHARED ROW WIRING AND DUAL OUTPUT LINES 审中-公开
标题翻译：多色CMOS像素传感器，具有共享线路和双输出线
公开(公告)号：US20100155576A1
公开(公告)日：2010-06-24
申请号：US12717703
申请日：2010-03-04
申请人： Richard B. Merrill
发明人： Richard B. Merrill
IPC分类号： H01L27/146
CPC分类号： H04N5/37452 , H01L27/14603 , H01L27/14641 , H04N5/3741 , H04N5/37457 , H04N9/045
摘要： An array of multicolor CMOS pixel sensors has a plurality of photosensors per pixel, each photosensor coupled to a single sense node through a select transistor having a select input, each pixel sensor including a reset transistor coupled to the sense node and having a reset input, an amplifier coupled to the sense node and a row-select transistor coupled to the amplifier. The select inputs and the reset inputs for pixel sensors in a pair of adjacent rows are coupled to select signal lines and reset signal lines associated with the pair of rows. The amplifier transistors in individual columns of each row are coupled to a column output line through a row-select transistor having a row-select input. The row-select inputs for pixel sensors in each row of the array are coupled to a row-select line associated with the row.
摘要翻译：多色CMOS像素传感器阵列具有每像素多个光电传感器，每个光电传感器通过具有选择输入的选择晶体管耦合到单个感测节点，每个像素传感器包括耦合到感测节点并具有复位输入的复位晶体管，耦合到感测节点的放大器和耦合到放大器的行选择晶体管。一对相邻行中的像素传感器的选择输入和复位输入被耦合到选择与该对行相关联的信号线和复位信号线。每行的各列中的放大器晶体管通过具有行选择输入的行选择晶体管耦合到列输出线。阵列的每一行中的像素传感器的行选择输入被耦合到与该行相关联的行选择行。

9. 发明授权

US06960757B2 Simplified wiring schemes for vertical color filter pixel sensors 有权
标题翻译：垂直滤色镜像素传感器简化布线方案
公开(公告)号：US06960757B2
公开(公告)日：2005-11-01
申请号：US10418881
申请日：2003-04-16
申请人： Richard B. Merrill , Robert S. Hannebauer , Glenn J. Keller , James Tornes
发明人： Richard B. Merrill , Robert S. Hannebauer , Glenn J. Keller , James Tornes
IPC分类号： H01L27/146 , G01J3/50
CPC分类号： H01L27/14647 , H01L27/14621
摘要： Vertical-color-filter pixel sensors having simplified wiring and reduced transistor counts are disclosed. In an embodiment, a single line is used for reference voltage, pixel reset voltage, and column-output signals in a VCF pixel sensor. In another embodiment, row-reset signals and row-enable signals are sent across a line that is shared between adjacent rows in an array of VCF pixel sensors. The present invention also provides an optimized layout for a VCF pixel sensor with shared row-reset, row-enable, reference voltage and column-output lines as well as a VCF pixel sensor in which source-follower voltage, source-follower amplifier voltage and row-enable signals all share a common line. These combined line embodiments can be used with a single column-output line as well as two row-enable lines. The embodiments can also be implemented in a VCF pixel sensor without a row-enable transistor.
摘要翻译：公开了具有简化的布线和减小的晶体管数量的垂直滤色器像素传感器。在一个实施例中，单行用于VCF像素传感器中的参考电压，像素复位电压和列输出信号。在另一个实施例中，行复位信号和行使能信号跨越在VCF像素传感器阵列中的相邻行之间共享的行发送。本发明还提供了具有共享行复位，行使能，参考电压和列输出线以及VCF像素传感器的VCF像素传感器的优化布局，其中源跟随器电压，源跟随器放大器电压和行使能信号都共享共同的一行。这些组合线实施例可以与单个列输出线以及两个行使能线一起使用。实施例也可以在没有行使能晶体管的VCF像素传感器中实现。

10. 发明授权

US06958194B1 Imager with improved sensitivity 失效
标题翻译：成像仪灵敏度提高
公开(公告)号：US06958194B1
公开(公告)日：2005-10-25
申请号：US10689779
申请日：2003-10-21
申请人： Peter J. Hopper , Philipp Lindorfer , Michael Mian , Robert Drury
发明人： Peter J. Hopper , Philipp Lindorfer , Michael Mian , Robert Drury
IPC分类号： B32B9/00 , H01L27/146 , H01L31/00
CPC分类号： H01L27/14647 , Y10T428/12528 , Y10T428/12674
摘要： An imaging cell reduces recombination losses and increases sensitivity by forming a low resistance lateral path with a silicon germanium layer of a conductivity type that is sandwiched between silicon layers of the same conductivity type. The silicon germanium layer also provides a quantum well from which photo-generated electrons find it difficult to escape, thereby providing a barrier that reduces cross-talk.
摘要翻译：成像单元通过用夹在相同导电类型的硅层之间的导电类型的硅锗层形成低电阻横向路径来降低复合损耗并增加灵敏度。硅锗层还提供了一个量子阱，光电子发现它难以逃逸，从而提供了减少串扰的屏障。

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