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1. 发明授权

US10200644B2 Global shutter scheme that reduces the effects of dark current 有权
公开(公告)号：US10200644B2
公开(公告)日：2019-02-05
申请号：US15552426
申请日：2016-12-19
申请人： BAE Systems Imaging Solutions Inc.
发明人： Hung T. Do , Paul G. Lim , Stephen W. Mims
IPC分类号： H04N3/14 , H04N5/335 , H04N5/3745 , H04N5/351 , H04N5/355 , H04N5/361 , H04N5/353 , H04N5/359 , H04N5/378
摘要： An imaging array having a plurality of pixel sensors connected to a bit line is disclosed. Each pixel sensor includes a first photodetector having a photodiode, a floating diffusion node, and an amplifier. The floating diffusion node is characterized by a parasitic photodiode and parasitic capacitance. The amplifier amplifies a voltage on the floating diffusion node to produce a signal on an amplifier output. The first photodetector also includes a bit line gate that connects the amplifier output to the bit line in response to a row select signal and a voltage dividing capacitor having a first terminal connected to the floating diffusion node and a second terminal connected to a drive source that switches a voltage on the second terminal between a drive potential different from ground and ground in response to a drive control signal.

2. 发明授权

US10057530B2 High dynamic range imaging sensor array 有权
公开(公告)号：US10057530B2
公开(公告)日：2018-08-21
申请号：US15740585
申请日：2016-08-18
申请人： BAE Systems Imaging Solutions Inc.
发明人： Bo Mu , Alberto M. Magnani , Stephen W. Mims
IPC分类号： H04N5/378 , H04N5/355 , H04N5/361 , H04N5/341 , H04N5/365
CPC分类号： H04N5/378 , H01L27/14609 , H04N5/341 , H04N5/35536 , H04N5/35545 , H04N5/35563 , H04N5/361 , H04N5/365 , H04N5/3651 , H04N5/3658
摘要： An apparatus having a rectangular imaging array characterized by a plurality of pixel sensors and a plurality of readout lines is disclosed. The apparatus has a plurality of column processing circuits, each column processing circuit being connected to a corresponding one of the readout lines and a plurality of signal injectors, one signal injector being connected to each of the readout lines. Each signal injector causes one of a predetermined number of voltages to be coupled to that readout line. An exposure for each of the pixel sensors is determined during image recording periods. The signal injectors inject a plurality of calibration voltages into the readout lines during calibration periods, and determines a gain function of an amplifier in one of the column processing circuits by measuring an output of the amplifier for the plurality of calibration voltages, the calibration period is between the imaging recording periods.

3. 发明申请

US20180332247A1 GLOBAL SHUTTER SCHEME THAT REDUCES THE EFFECTS OF DARK CURRENT 审中-公开
公开(公告)号：US20180332247A1
公开(公告)日：2018-11-15
申请号：US15552426
申请日：2016-12-19
申请人： BAE Systems Imaging Solutions Inc.
发明人： Hung T. Do , Paul G. Lim , Stephen W. Mims
IPC分类号： H04N5/3745 , H04N5/378 , H04N5/359 , H04N5/353
CPC分类号： H04N5/3745 , H04N5/351 , H04N5/353 , H04N5/3559 , H04N5/359 , H04N5/361 , H04N5/37452 , H04N5/378
摘要： An imaging array having a plurality of pixel sensors connected to a bit line is disclosed. Each pixel sensor includes a first photodetector having a photodiode, a floating diffusion node, and an amplifier. The floating diffusion node is characterized by a parasitic photodiode and parasitic capacitance. The amplifier amplifies a voltage on the floating diffusion node to produce a signal on an amplifier output. The first photodetector also includes a bit line gate that connects the amplifier output to the bit line in response to a row select signal and a voltage dividing capacitor having a first terminal connected to the floating diffusion node and a second terminal connected to a drive source that switches a voltage on the second terminal between a drive potential different from ground and ground in response to a drive control signal.

4. 发明申请

US20180191979A1 High Dynamic Range Imaging Sensor Array 审中-公开
公开(公告)号：US20180191979A1
公开(公告)日：2018-07-05
申请号：US15740585
申请日：2016-08-18
申请人： BAE Systems Imaging Solutions Inc.
发明人： Bo Mu , Alberto M. Magnani , Stephen W. Mims
IPC分类号： H04N5/378 , H04N5/355 , H04N5/365 , H04N5/341 , H04N5/361
CPC分类号： H04N5/378 , H04N5/341 , H04N5/35545 , H04N5/35563 , H04N5/361 , H04N5/365 , H04N5/3651 , H04N5/3658
摘要： An apparatus having a rectangular imaging array characterized by a plurality of pixel sensors and a plurality of readout lines is disclosed. The apparatus has a plurality of column processing circuits, each column processing circuit being connected to a corresponding one of the readout lines and a plurality of signal injectors, one signal injector being connected to each of the readout lines. Each signal injector causes one of a predetermined number of voltages to be coupled to that readout line. An exposure for each of the pixel sensors is determined during image recording periods. The signal injectors inject a plurality of calibration voltages into the readout lines during calibration periods, and determines a gain function of an amplifier in one of the column processing circuits by measuring an output of the amplifier for the plurality of calibration voltages, the calibration period is between the imaging recording periods.

5. 发明申请

US20200335538A1 Pixel and Imaging Array with Reduced Dark Current Adapted to Low Light Imaging 审中-公开
公开(公告)号：US20200335538A1
公开(公告)日：2020-10-22
申请号：US16389789
申请日：2019-04-19
申请人： BAE Systems Imaging Solutions Inc.
发明人： Hung T. Do , Chenguang Gong , Stephen W. Mims , Khai Nguyen
IPC分类号： H01L27/146 , H04N5/357
摘要： A pixel sensor, an imaging array that includes such pixel sensors, and a method for operating an imaging array are disclosed. The pixel sensor includes a transfer gate that connects a photodiode to a floating diffusion node in response to a transfer signal, a reset circuit, and a controller. The reset circuit is adapted to apply either a first potential or a second potential to the floating diffusion node, the second potential being less than the first potential. The controller is configured to cause the reset circuit to apply the first potential to the floating diffusion node while the transfer gate is conducting just prior to a start of an accumulation phase, and then apply the second potential to the floating diffusion node after the transfer gate is rendered non-conducting, the second potential is less than the first potential.

6. 发明授权

US09253396B2 Variable gain column amplifier adapted for use in imaging arrays 有权
标题翻译：适用于成像阵列的可变增益列放大器
公开(公告)号：US09253396B2
公开(公告)日：2016-02-02
申请号：US14097162
申请日：2013-12-04
申请人： BAE Systems Imaging Solutions Inc.
发明人： Hung T. Do , Peter Bartkovjak , Boyd Fowler , Stephen W. Mims
IPC分类号： H04N5/3745 , H04N5/232
CPC分类号： H04N5/23232 , H04N5/357 , H04N5/3575 , H04N5/37455 , H04N5/378
摘要： An imaging sensor using a novel bit line processing circuit, that circuit, and the method of processing the pixel outputs from an image sensor using that processing circuit are disclosed. The image sensor includes an array of pixel sensors, a signal digitizing circuit, and a digitizing controller. Each pixel sensor generates a voltage signal that is a function of a charge on the photodetector in that pixel sensor, and couples that voltage signal to a bit line in response to a first signal. The signal digitizing circuit is connected to the bit line, the digitizing circuit converting the voltage signal to a plurality of output digital values, the output digital values having selectable levels of digitization noise. The digitizing controller generates the level of noise based on the voltage signal. The signal digitizing circuit includes a variable gain amplifier and an ADC having a fixed number of bits.
摘要翻译：公开了一种利用新颖的位线处理电路，该电路以及使用该处理电路从图像传感器处理像素输出的方法的成像传感器。图像传感器包括像素传感器阵列，信号数字化电路和数字化控制器。每个像素传感器产生作为该像素传感器中的光电检测器上的电荷的函数的电压信号，并且响应于第一信号将该电压信号耦合到位线。信号数字化电路连接到位线，数字化电路将电压信号转换为多个输出数字值，输出数字值具有可选择的数字化噪声水平。数字化控制器基于电压信号产生噪声电平。信号数字化电路包括可变增益放大器和具有固定位数的ADC。

7. 发明授权

US11107847B2 Pixel and imaging array with reduced dark current adapted to low light imaging 有权
公开(公告)号：US11107847B2
公开(公告)日：2021-08-31
申请号：US16389789
申请日：2019-04-19
申请人： BAE Systems Imaging Solutions Inc.
发明人： Hung T. Do , Chenguang Gong , Stephen W. Mims , Khai Nguyen
IPC分类号： H04N5/357 , H01L27/146 , H04N5/335 , H04N1/00 , H04N3/14
摘要： A pixel sensor, an imaging array that includes such pixel sensors, and a method for operating an imaging array are disclosed. The pixel sensor includes a transfer gate that connects a photodiode to a floating diffusion node in response to a transfer signal, a reset circuit, and a controller. The reset circuit is adapted to apply either a first potential or a second potential to the floating diffusion node, the second potential being less than the first potential. The controller is configured to cause the reset circuit to apply the first potential to the floating diffusion node while the transfer gate is conducting just prior to a start of an accumulation phase, and then apply the second potential to the floating diffusion node after the transfer gate is rendered non-conducting, the second potential is less than the first potential.

8. 发明申请

US20150156413A1 Variable Gain Column Amplifier Adapted for Use in Imaging Arrays 有权
标题翻译：适用于成像阵列的可变增益列放大器
公开(公告)号：US20150156413A1
公开(公告)日：2015-06-04
申请号：US14097162
申请日：2013-12-04
申请人： BAE Systems Imaging Solutions, Inc.
发明人： Hung T. Do , Peter Bartkovjak , Boyd Fowler , Stephen W. Mims
IPC分类号： H04N5/232 , H04N5/3745
CPC分类号： H04N5/23232 , H04N5/357 , H04N5/3575 , H04N5/37455 , H04N5/378
摘要： An imaging sensor using a novel bit line processing circuit, that circuit, and the method of processing the pixel outputs from an image sensor using that processing circuit are disclosed. The image sensor includes an array of pixel sensors, a signal digitizing circuit, and a digitizing controller. Each pixel sensor generates a voltage signal that is a function of a charge on the photodetector in that pixel sensor, and couples that voltage signal to a bit line in response to a first signal. The signal digitizing circuit is connected to the bit line, the digitizing circuit converting the voltage signal to a plurality of output digital values, the output digital values having selectable levels of digitization noise. The digitizing controller generates the level of noise based on the voltage signal. The signal digitizing circuit includes a variable gain amplifier and an ADC having a fixed number of bits.
摘要翻译：公开了一种利用新颖的位线处理电路，该电路以及使用该处理电路从图像传感器处理像素输出的方法的成像传感器。图像传感器包括像素传感器阵列，信号数字化电路和数字化控制器。每个像素传感器产生作为该像素传感器中的光电检测器上的电荷的函数的电压信号，并且响应于第一信号将该电压信号耦合到位线。信号数字化电路连接到位线，数字化电路将电压信号转换为多个输出数字值，输出数字值具有可选择的数字化噪声水平。数字化控制器基于电压信号产生噪声电平。信号数字化电路包括可变增益放大器和具有固定位数的ADC。

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