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公开(公告)号:US20050128329A1
公开(公告)日:2005-06-16
申请号:US11043247
申请日:2005-01-27
申请人: Sandor Barna , Eric Fossum
发明人: Sandor Barna , Eric Fossum
CPC分类号: H04N5/3598 , H04N5/378
摘要: An active pixel sensor (APS) that includes circuitry to eliminate artifacts in digital images. The APS includes a comparator for comparing a signal level from a pixel to an adjusted saturation voltage to determine if the pixel is saturated. If the pixel is saturated, an associated saturation flag is stored and used to replace the signal from the pixel with a maximum value corresponding to a brightest pixel in the image.
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公开(公告)号:US20050092895A1
公开(公告)日:2005-05-05
申请号:US10696560
申请日:2003-10-30
申请人: Eric Fossum
发明人: Eric Fossum
IPC分类号: H01L27/00 , H04N5/363 , H04N5/3745
CPC分类号: H04N5/378 , H04N5/3559 , H04N5/3575 , H04N5/363 , H04N5/374 , H04N5/37452
摘要: A circuit and method for reducing kTC noise in CMOS imagers while minimizing power dissipation is disclosed. Correlated double sampling (CDS) is performed within each pixel such that the reset voltage and the integration voltage are sampled and stored within the pixel until the voltages are forwarded to a differential amplifier for subtraction.
摘要翻译: 公开了一种在降低功耗的同时降低CMOS成像器中的kTC噪声的电路和方法。 在每个像素内执行相关双采样(CDS),使得复位电压和积分电压被采样并存储在像素内,直到电压转发到差分放大器以进行减法。
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公开(公告)号:US06473124B1
公开(公告)日:2002-10-29
申请号:US09066506
申请日:1998-04-23
申请人: Roger Panicacci , Barmak Mansoorian , Eric Fossum
发明人: Roger Panicacci , Barmak Mansoorian , Eric Fossum
IPC分类号: H04N5217
CPC分类号: H04N5/361 , H04N5/2176
摘要: A random access memory stores values indicative of fixed pattern noise from a pixel circuit, which are used to compensate the pixel output to compensate for the fixed pattern noise.
摘要翻译: 随机存取存储器存储指示来自像素电路的固定模式噪声的值,其用于补偿像素输出以补偿固定模式噪声。
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