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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
Applicant: Rambus Inc.
Inventor： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
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.
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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
Applicant: Rambus Inc.
Inventor： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
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：US10567683B2
公开(公告)日：2020-02-18
申请号：US15313029
申请日：2015-06-03
Applicant: Rambus Inc.
Inventor： Michael Guidash , John Ladd
IPC: H04N5/357 , H01L27/146 , H04N5/363 , H04N5/378
Abstract: A pixel circuit within an integrated-circuit image sensor includes a photodiode having a pinning layer of a first conductivity type, a floating diffusion node and a transfer gate disposed between the photodiode and the floating diffusion node. A first control input is coupled to the transfer gate, and a second control input is coupled to the pinning layer of the photodiode to enable the depletion potential of the photodiode to be raised and lowered.
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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：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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Patent Agency Ranking
公开(公告)号：US10070084B2
公开(公告)日：2018-09-04
申请号：US14989580
申请日：2016-01-06
Applicant: Rambus Inc.
Inventor： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
Abstract: A pixel within a pixel array of an integrated-circuit image sensor outputs an analog signal representative of accumulated photocharge. First and second analog-to-digital conversions of the analog signal are initiated while the pixel is outputting the analog signal, the first analog-to-digital conversion corresponding to a low-light range of photocharge accumulation within the pixel and the second analog-to-digital conversion corresponding to a brighter-light range of photocharge accumulation within the pixel.
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公开(公告)号：US10798322B2
公开(公告)日：2020-10-06
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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公开(公告)号：US20200007804A1
公开(公告)日：2020-01-02
申请号：US16503383
申请日：2019-07-03
Applicant: Rambus Inc.
Inventor： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
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.
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公开(公告)号：US09432597B2
公开(公告)日：2016-08-30
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
IPC: H04N5/365 , H04N5/378 , H04N5/357 , H04N5/3745 , H04N5/355
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：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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