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公开(公告)号：US11012649B2
公开(公告)日：2021-05-18
申请号：US16503383
申请日：2019-07-03
申请人： Rambus Inc.
发明人： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
摘要： A control pulse is generated a first control signal line coupled to a transfer gate of a pixel to enable photocharge accumulated within a photosensitive element of the pixel to be transferred to a floating diffusion node, the first control signal line having a capacitive coupling to the floating diffusion node. A feedthrough compensation pulse is generated on a second signal line of the pixel array that also has a capacitive coupling to the floating diffusion node. The feedthrough compensation pulse is generated with a pulse polarity opposite the pulse polarity of the control pulse and is timed to coincide with the control pulse such that capacitive feedthrough of the control pulse to the floating diffusion node is reduced.
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公开(公告)号：US10404908B2
公开(公告)日：2019-09-03
申请号：US15739868
申请日：2016-06-15
申请人： Rambus Inc.
发明人： David G. Stork , Patrick R. Gill , Evan L. Erickson , Mark D. Kellam , Alexander C. Schneider , Jay Endsley , Salman Kabir
摘要： An imaging system includes multiple diffractive optical gratings disposed over a two-dimensional array of photosensitive pixels. The different gratings present different patterns and features that are tailored to produce point-spread responses that emphasize different properties of an imaged scene. The different responses are captured by the pixels, and data captured from the responses can be used separately or together to analyze aspects of the scene. The imaging systems can include circuitry to analyze the image data, and to support modes that select between point-spread responses, selections of the pixels, and algorithms for analyzing image data.
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公开(公告)号：US10306169B2
公开(公告)日：2019-05-28
申请号：US15013927
申请日：2016-02-02
申请人： Rambus Inc.
发明人： Michael Guidash , Craig M. Smith , Jay Endsley
IPC分类号： H04N5/378
摘要： A pixel in an integrated-circuit image sensor is enabled to output, throughout a sampling interval, an analog signal having an amplitude dependent, at least in part, on photocharge integrated within a photosensitive element of the pixel. A plurality of samples of the analog signal are generated during an initial portion of the sampling interval that is shorter than a settling time for a maximum possible level of the analog signal.
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公开(公告)号：US20180270432A1
公开(公告)日：2018-09-20
申请号：US15759963
申请日：2016-09-20
申请人： Rambus Inc.
CPC分类号： H04N5/378 , H04N5/2355 , H04N5/3532 , H04N5/35536 , H04N5/35554
摘要： Signals representative of total photocharge integrated within respective image-sensor pixels are read out of the pixels after a first exposure interval that constitutes a first fraction of a frame interval. Signals in excess of a threshold level are read out of the pixels after an ensuing second exposure interval that constitutes a second fraction of the frame interval, leaving residual photocharge within the pixels. After a third exposure interval that constitutes a third fraction of the frame interval, signals representative of a combination of at least the residual photocharge and photocharge integrated within the pixels during the third exposure interval are read out of the pixels.
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公开(公告)号：US20170070687A1
公开(公告)日：2017-03-09
申请号：US15244297
申请日：2016-08-23
申请人： Rambus Inc.
发明人： Jay Endsley
CPC分类号： H04N9/045 , G02B5/1814 , G02B5/1819 , G02B5/1871 , G02B13/16 , H04N5/2254 , H04N5/2256
摘要： An imaging system includes a refractive optical element and one or more diffractive optical gratings disposed over a two-dimensional array of photosensitive pixels. The different gratings present different patterns and features that are tailored to produce point-spread responses that emphasize different properties of an imaged scene. The different responses are captured by the pixels, and data captured from the responses can be used separately or together to analyze aspects of the scene. The imaging systems can include circuitry to analyze the image data, and to support modes that select between point-spread responses, selections of the pixels, and algorithms for analyzing image data.
摘要翻译： 成像系统包括折射光学元件和设置在光敏像素的二维阵列上的一个或多个衍射光栅。 不同的光栅呈现出不同的图案和特征，其被定制以产生强调成像场景的不同属性的点扩展响应。 不同的响应由像素捕获，并且从响应中捕获的数据可以单独使用或一起使用来分析场景的各个方面。 成像系统可以包括用于分析图像数据的电路，以及支持在点扩展响应，像素选择以及用于分析图像数据的算法之间进行选择的模式。
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公开(公告)号：US09264639B2
公开(公告)日：2016-02-16
申请号：US14616546
申请日：2015-02-06
申请人： Rambus Inc.
发明人： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
CPC分类号： H04N5/374 , H01L27/14643 , H04N5/3577 , H04N5/365 , H04N5/3765 , H04N5/378
摘要： A control pulse is generated a first control signal line coupled to a transfer gate of a pixel to enable photocharge accumulated within a photosensitive element of the pixel to be transferred to a floating diffusion node, the first control signal line having a capacitive coupling to the floating diffusion node. A feedthrough compensation pulse is generated on a second signal line of the pixel array that also has a capacitive coupling to the floating diffusion node. The feedthrough compensation pulse is generated with a pulse polarity opposite the pulse polarity of the control pulse and is timed to coincide with the control pulse such that capacitive feedthrough of the control pulse to the floating diffusion node is reduced.
摘要翻译： 生成控制脉冲，该第一控制信号线耦合到像素的传输门，以使得能够累积在该像素的光敏元件内的光电荷被传送到浮动扩散节点，该第一控制信号线具有与浮置的电容耦合 扩散节点。 在像素阵列的还具有与浮动扩散节点的电容耦合的第二信号线上产生馈通补偿脉冲。 馈通补偿脉冲以与控制脉冲的脉冲极性相反的脉冲极性产生，并被定时以与控制脉冲一致，使得控制脉冲到浮动扩散节点的电容馈通减小。
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公开(公告)号：US10659715B2
公开(公告)日：2020-05-19
申请号：US16503391
申请日：2019-07-03
申请人： Rambus Inc.
摘要： Signals representative of total photocharge integrated within respective image-sensor pixels are read out of the pixels after a first exposure interval that constitutes a first fraction of a frame interval. Signals in excess of a threshold level are read out of the pixels after an ensuing second exposure interval that constitutes a second fraction of the frame interval, leaving residual photocharge within the pixels. After a third exposure interval that constitutes a third fraction of the frame interval, signals representative of a combination of at least the residual photocharge and photocharge integrated within the pixels during the third exposure interval are read out of the pixels.
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公开(公告)号：US20180124343A1
公开(公告)日：2018-05-03
申请号：US15563875
申请日：2016-03-31
申请人： Rambus Inc.
发明人： Thomas Vogelsang , Jay Endsley , Michael Guidash , Craig M. Smith
IPC分类号： H04N5/378 , H04N5/353 , H04N5/355 , H01L27/146
CPC分类号： H04N5/378 , H01L27/14634 , H04N5/3532 , H04N5/3535 , H04N5/35572 , H04N5/35581 , H04N5/357 , H04N5/369
摘要： Multiple image data subframes corresponding to respective portions of an exposure interval are generated within a sensor device of an image system. Depending on whether the exposure interval exceeds one or more exposure time thresholds, data representative multiple image data subframes are output from the image sensor device in one of at least two formats, including a first format in which each of the subframes of image data is output in its entirety, and a second format in which a logical combination of at least two of the subframes of image data is output instead of the at least two of the subframes of image data such that the total volume of image data output from the image sensor device is reduced relative to the first format.
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公开(公告)号：US20170230575A1
公开(公告)日：2017-08-10
申请号：US15423892
申请日：2017-02-03
申请人： Rambus Inc.
发明人： Jay Endsley , Thomas Vogelsang
CPC分类号： G02B5/1871 , G02B5/1842 , H04N5/335
摘要： An imaging device uses a grating to produce an interference pattern for capture by a photodetector array. Digital photographs and other image information can then be extracted from the pattern. An integrated processor locally supports this extraction by upsampling the captured interference pattern and deconvolving the upsampled pattern with an image-calculation parameter set that represents the grating at a resolution greater than that provided by the photodetector array. Deconvolving the upsampled pattern with a high-resolution parameter increases the resolution of extracted image information.
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公开(公告)号：US20170099447A1
公开(公告)日：2017-04-06
申请号：US15333645
申请日：2016-10-25
申请人： Rambus Inc.
IPC分类号： H04N5/355 , H01L27/146 , H04N5/378 , H04N5/3745 , H04N5/347 , H04N5/374
CPC分类号： H04N5/3559 , H01L27/14621 , H01L27/14627 , H01L27/14641 , H01L27/14643 , H01L27/14645 , H04N5/347 , H04N5/355 , H04N5/3741 , H04N5/37455 , H04N5/378
摘要： In a pixel array within an integrated-circuit image sensor, each of a plurality of pixels is evaluated to determine whether charge integrated within the pixel in response to incident light exceeds a first threshold. N-bit digital samples corresponding to the charge integrated within at least a subset of the plurality of pixels are generated, and then applied to a lookup table to retrieve respective M-bit digital values (M being less than N), wherein a stepwise range of charge integration levels represented by possible states of the M-bit digital values extends upward from a starting charge integration level that is determined based on the first threshold.
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