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公开(公告)号：US20180070036A1
公开(公告)日：2018-03-08
申请号：US15362023
申请日：2016-11-28
发明人： Petrus Gijsbertus CENTEN , Jeroen ROTTE , Juul Josephus Johannes VAN DEN HEIJKANT , Rudolf VAN REE
IPC分类号： H04N5/374 , H04N5/378 , H01L27/146
CPC分类号： H04N5/374 , H01L27/14614 , H01L27/14643 , H04N5/3452 , H04N5/3575 , H04N5/363 , H04N5/37452 , H04N5/37455 , H04N5/37457 , H04N5/3765 , H04N5/378
摘要： A CMOS image sensor with reducing interconnections is provided. The CMOS image sensor may include a first row of pixels that includes a first pixel. The first pixel may include a first plurality of photodiodes and a first plurality of transfer gates. Each of the first plurality of photodiodes may be associated with a corresponding one of the first plurality of transfer gates. The CMOS image sensor may include a second row of pixels that includes a second pixel. The second pixel may include a second plurality of photodiodes and a second plurality of transfer gates. Each of the second plurality of photodiodes may be associated with a corresponding one of the second plurality of transfer gates. A first one of the transfer gates of the first plurality of transfer gates may be coupled to a first one of the transfer gates of the second plurality of transfer gates.
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公开(公告)号：US20180070032A1
公开(公告)日：2018-03-08
申请号：US15693034
申请日：2017-08-31
摘要： A system and method is provided for performing high dynamic range digital double sampling. More particularly, a CMOS image sensor is provided that includes a pixel array with each pixel sampling both dark and bright values for digital double sampling. After the sampled signals are digitized, a mean dark value is determined and each dark value is further fed to a lookup table that generates an output value taking into account whether the pixel has been saturated. In over exposed conditions, the lookup table will generate a negative value output to eliminate image artifacts. All three values are fed to adder logic circuit that subtracts the mean dark value and the lookup table output from the bright value. This resulting output is fed to a video viewer.
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公开(公告)号：US20170214874A1
公开(公告)日：2017-07-27
申请号：US15483259
申请日：2017-04-10
发明人： Jeroen ROTTE , Peter CENTEN
IPC分类号： H04N5/369 , H04N5/374 , H04N5/3745 , H04N5/353
摘要： An image sensor is provided. In one aspect, the image sensor includes a pixel coupled to an output line. The pixel includes a photodiode configured to generate electrical charges in response to light and a supply circuit configured to supply a voltage to the photodiode to keep a voltage of the photodiode at or above a threshold level in an integration time. In another aspect, the pixel includes a supply circuit configured to selectively supply voltage to the photodiode in a first charge holding capacity and a second charge holding capacity.
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公开(公告)号：US20190260953A1
公开(公告)日：2019-08-22
申请号：US16403844
申请日：2019-05-06
IPC分类号： H04N5/374 , H04N5/357 , H04N5/363 , H01L27/146 , H04N5/3745 , H04N5/345 , H04N5/378
摘要： A method for performing differential double sampling and a CMOS image sensing device for performing the same. In one example, the CMOS image sensing device includes a pixel array include a multitude of pixels with each pixel formed by a plurality of photodiodes, a floating diffusion point and a plurality of transistors electrically coupled the plurality of photodiodes. Moreover, a column readout circuit with four storage capacitors is selectively coupled to the pixel array by switches so that the storage capacitors can store sampled pixel values. A control circuit connected to the pixel array and the column readout circuit selectively activates the transistors to output to the column readout circuit sampled dark value and bright values of one photodiode and a sampled double bright value of the one photodiode and one additional photodiode.
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公开(公告)号：US20150200229A1
公开(公告)日：2015-07-16
申请号：US14157454
申请日：2014-01-16
发明人： Jeroen ROTTE , Peter CENTEN
IPC分类号： H01L27/148
摘要： An image sensor and a method for operating an image sensor are provided. In one aspect, the image sensor includes a pixel with multilevel transfer gate. The image sensor includes a pixel coupled to an output line. The pixel includes a photodiode configured to generate electrical charges in response to light. The pixel also includes a capacitive element for storing electrical charges for providing a value to the output line. A transfer gate is coupled between the photodiode and the capacitive element. The transfer gate is configured to activate to transfer the electrical charges between the photodiode and the capacitive element. The image sensor is configured to provide at least one control signal operating in a plurality of voltages to the transfer gate. The plurality of voltages is in addition to a voltage which deactivates the transfer gate.
摘要翻译： 提供了图像传感器和操作图像传感器的方法。 在一个方面，图像传感器包括具有多级传输门的像素。 图像传感器包括耦合到输出线的像素。 像素包括被配置为响应于光而产生电荷的光电二极管。 像素还包括用于存储用于向输出线提供值的电荷的电容元件。 传输门耦合在光电二极管和电容元件之间。 传输门被配置为激活以传递光电二极管和电容元件之间的电荷。 图像传感器被配置为向传送门提供以多个电压工作的至少一个控制信号。 多个电压除了使转移门失活的电压之外。
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公开(公告)号：US20200162678A1
公开(公告)日：2020-05-21
申请号：US16752124
申请日：2020-01-24
发明人： Jeroen ROTTE , Rik VISSER
摘要： An image processor is provided for correcting brightness of saturated pixels of a captured image. The image processor can include a pixel saturation determiner that whether one or more pixels in an image sensor have been saturated by comparing pixel brightness levels of the pixels to a predetermined saturation threshold. Moreover, the image processor includes an image enhancer that generates a corrected image without artifacts due to the saturated pixel(s) by replacing the pixel brightness of the saturated pixel(s) with a pixel correction value that is based on a pixel brightness of one or more unsaturated pixel in the image sensor.
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公开(公告)号：US20200034955A1
公开(公告)日：2020-01-30
申请号：US16584854
申请日：2019-09-26
摘要： An apparatus for HDR image processing is provided. The apparatus determines an imaging sensitivity value. The apparatus then compares subsets of imaging information with the determined imaging sensitivity value and applies a gamma correction to each subset of imaging information using a gamma low contrast curve or a gamma high contrast curve based on the comparison to obtain the gamma corrected subset of imaging information.
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公开(公告)号：US20200014866A1
公开(公告)日：2020-01-09
申请号：US16571660
申请日：2019-09-16
摘要： A system and method is provided for performing high dynamic range digital double sampling. More particularly, a CMOS image sensor is provided that includes a pixel array with each pixel sampling both dark and bright values for digital double sampling. After the sampled signals are digitized, a mean dark value is determined and each dark value is further fed to a lookup table that generates an output value taking into account whether the pixel has been saturated. In over exposed conditions, the lookup table will generate a negative value output to eliminate image artifacts. All three values are fed to adder logic circuit that subtracts the mean dark value and the lookup table output from the bright value. This resulting output is fed to a video viewer.
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公开(公告)号：US20190220961A1
公开(公告)日：2019-07-18
申请号：US16361094
申请日：2019-03-21
CPC分类号： G06T5/009 , G06T2207/10024 , G06T2207/20208 , H04N5/202 , H04N5/2355
摘要： An apparatus for HDR image processing is provided. The apparatus determines an imaging sensitivity value. The apparatus then compares subsets of imaging information with the determined imaging sensitivity value and applies a gamma correction to each subset of imaging information using a gamma low contrast curve or a gamma high contrast curve based on the comparison to obtain the gamma corrected subset of imaging information.
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10.发明申请公开(公告)号：US20180070035A1
公开(公告)日：2018-03-08
申请号：US15690034
申请日：2017-08-29
IPC分类号： H04N5/363 , H04N5/345 , H04N5/3745 , H04N5/378
CPC分类号： H04N5/374 , H01L27/14614 , H01L27/14643 , H04N5/3452 , H04N5/3575 , H04N5/363 , H04N5/37452 , H04N5/37455 , H04N5/37457 , H04N5/3765 , H04N5/378
摘要： A method for performing differential double sampling and a CMOS image sensing device for performing the same. In one example, the CMOS image sensing device includes a pixel array include a multitude of pixels with each pixel formed by a plurality of photodiodes, a floating diffusion point and a plurality of transistors electrically coupled the plurality of photodiodes. Moreover, a column readout circuit with four storage capacitors is selectively coupled to the pixel array by switches so that the storage capacitors can store sampled pixel values. A control circuit connected to the pixel array and the column readout circuit selectively activates the transistors to output to the column readout circuit sampled dark value and bright values of one photodiode and a sampled double bright value of the one photodiode and one additional photodiode.
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