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公开(公告)号：US20160234447A1
公开(公告)日：2016-08-11
申请号：US15013927
申请日：2016-02-02
Applicant: Rambus Inc.
Inventor： Michael Guidash , Craig M. Smith , Jay Endsley
CPC classification number: H04N5/378
Abstract: 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.
Abstract translation: 集成电路图像传感器中的像素能够在整个采样间隔期间输出至少部分地依赖于集成在像素的光敏元件内的光电荷的幅度的模拟信号。 在采样间隔的初始部分中，比模拟信号的最大可能电平的建立时间短，产生模拟信号的多个采样。
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公开(公告)号：US20160028974A1
公开(公告)日：2016-01-28
申请号：US14807794
申请日：2015-07-23
Applicant: Rambus Inc.
Inventor： Michael Guidash , Thomas Vogelsang , Jay Endsley , James E. Harris , Craig M. Smith , John Ladd , Michael T. Ching
CPC classification number: H04N5/3655 , H04N5/355 , H04N5/357 , H04N5/3575 , H04N5/3651 , H04N5/3698 , H04N5/3745 , H04N5/37455 , H04N5/378
Abstract: An integrated-circuit image sensor generates, as constituent reference voltages of a first voltage ramp, a first sequence of linearly related reference voltages followed by a second sequence of exponentially related reference voltages. The integrated-circuit image sensor compares the constituent reference voltages of the first voltage ramp with a first signal level representative of photocharge integrated within a pixel of the image sensor to identify a first reference voltage of the constituent reference voltages that is exceeded by the first signal level
Abstract translation: 作为第一电压斜坡的组成参考电压的集成电路图像传感器产生第二线性相关参考电压序列，随后是第二指数相关参考电压序列。 集成电路图像传感器将第一电压斜坡的构成参考电压与表示在图像传感器的像素内集成的光电荷的第一信号电平进行比较，以识别由第一信号超过的构成参考电压的第一参考电压 水平
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公开(公告)号：US20150229859A1
公开(公告)日：2015-08-13
申请号：US14616546
申请日：2015-02-06
Applicant: Rambus Inc.
Inventor： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
IPC: H04N5/374
CPC classification number: H04N5/374 , H01L27/14643 , H04N5/3577 , H04N5/365 , H04N5/3765 , H04N5/378
Abstract: 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.
Abstract translation: 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：US20150201142A1
公开(公告)日：2015-07-16
申请号：US14638161
申请日：2015-03-04
Applicant: Rambus Inc.
Inventor： Craig M. Smith , Michael Guidash , Jay Endsley , Thomas Vogelsang , James E. Harris
IPC: H04N5/378
CPC classification number: H04N5/3559 , H01L27/14621 , H01L27/14627 , H01L27/14641 , H01L27/14643 , H01L27/14645 , H04N5/347 , H04N5/355 , H04N5/3741 , H04N5/37455 , H04N5/378
Abstract: 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.
Abstract translation: 在集成电路图像传感器内的像素阵列中，评估多个像素中的每一个以确定响应于入射光在像素内积分的电荷是否超过第一阈值。 产生与集成在多个像素的至少一个子集中的电荷相对应的N位数字样本，然后将其应用于查找表以检索相应的M位数字值（M小于N），其中步长范围 由M位数字值的可能状态表示的电荷积分电平从基于第一阈值确定的起始电荷积分电平向上延伸。
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公开(公告)号：US20200351463A1
公开(公告)日：2020-11-05
申请号：US16859243
申请日：2020-04-27
Applicant: Rambus Inc.
Inventor： Jay Endsley , Thomas Vogelsang , Craig M. Smith , Michael Guidash , Alexander C. Schneider
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20190166321A1
公开(公告)日：2019-05-30
申请号：US16197270
申请日：2018-11-20
Applicant: Rambus Inc.
Inventor： John Ladd , Michael Guidash , Craig M. Smith , Thomas Vogelsang , Jay Endsley , Michael T. Ching , James E. Harris
Abstract: A sequence of control voltage levels are applied to a control signal line capacitively coupled to a floating diffusion node of a pixel to sequentially adjust a voltage level of the floating diffusion node. A pixel output signal representative of the voltage level of the floating diffusion node is compared with a reference voltage to identify a first control voltage level of the sequence of control voltage levels for which the voltage level of the floating diffusion node exceeds the reference voltage.
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公开(公告)号：US10284825B2
公开(公告)日：2019-05-07
申请号：US15244297
申请日：2016-08-23
Applicant: Rambus Inc.
Inventor： Jay Endsley
Abstract: 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.
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公开(公告)号：US10277843B2
公开(公告)日：2019-04-30
申请号：US15589149
申请日：2017-05-08
Applicant: Rambus Inc.
Inventor： Craig M. Smith , Michael Guidash , Jay Endsley , Thomas Vogelsang , James E. Harris
IPC: H04N3/14 , H04N5/335 , H04N5/355 , H04N5/378 , H04N5/347 , H04N5/3745 , H01L27/146 , H04N5/374 , H01L31/113
Abstract: 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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公开(公告)号：US10274652B2
公开(公告)日：2019-04-30
申请号：US15423892
申请日：2017-02-03
Applicant: Rambus Inc.
Inventor： Jay Endsley , Thomas Vogelsang
Abstract: 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：US20190082125A1
公开(公告)日：2019-03-14
申请号：US16140862
申请日：2018-09-25
Applicant: Rambus Inc.
Inventor： Craig M. Smith , Frank Armstrong , Jay Endsley , Thomas Vogelsang , James E. Harris , John Ladd , Michael Guidash
Abstract: A pixel array within an integrated-circuit image sensor is exposed to light representative of a scene during a first frame interval and then oversampled a first number of times within the first frame interval to generate a corresponding first number of frames of image data from which a first output image may be constructed. One or more of the first number of frames of image data are evaluated to determine whether a range of luminances in the scene warrants adjustment of an oversampling factor from the first number to a second number, if so, the oversampling factor is adjusted such that the pixel array is oversampled the second number of times within a second frame interval to generate a corresponding second number of frames of image data from which a second output image may be constructed.
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