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公开(公告)号：US09894304B1
公开(公告)日：2018-02-13
申请号：US14827838
申请日：2015-08-17
Applicant: Rambus Inc.
Inventor： Craig M. Smith , Michael Guidash , Thomas Vogelsang , Jay Endsley , Michael T. Ching
CPC classification number: G06T3/4015 , H04N5/35554 , H04N5/35581 , H04N5/378 , H04N9/045 , H04N2209/046
Abstract: Photocharge is integrated within a first plurality of pixels of an integrated-circuit image sensor during a first exposure interval. A read-out signal is output from each pixel of the first plurality of pixels upon conclusion of the first exposure interval, each read-out signal indicating a respective level of photocharge integrated within the corresponding pixel during the first exposure interval. Photocharge is also integrated within a second plurality of pixels during a second exposure interval that transpires concurrently with the first exposure interval and has a duration not more than half the duration of the first exposure interval. A read-out signal is output from each pixel of the second plurality of pixels at least twice with respect to the second exposure interval, with each such read-out signal indicating a respective level of photocharge integrated within the corresponding pixel during at least a portion of the second exposure interval.
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公开(公告)号：US20160198108A1
公开(公告)日：2016-07-07
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
CPC classification number: H04N5/374 , H01L27/14643 , H04N5/3577 , H04N5/365 , H04N5/3765 , H04N5/378
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.
Abstract translation: 集成电路图像传感器的像素阵列内的像素输出表示累积光电荷的模拟信号。 当像素输出模拟信号时，开始模拟信号的第一和第二模拟 - 数字转换，第一模数转换对应于像素内的光电荷累积的低光范围和第二模拟 - 数字转换， 对应于像素内的光电荷累积的较亮光范围的数字转换。
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公开(公告)号：US20160028985A1
公开(公告)日：2016-01-28
申请号：US14772311
申请日：2014-03-14
Applicant: RAMBUS INC.
Inventor： Thomas Vogelsang , Michael Guidash , Song Xue , Maxim Smirnov , Craig M. Smith , Jay Endsley , James E. Harris
IPC: H04N5/3745 , H04N5/376
CPC classification number: H04N5/3745 , H01L27/14634 , H01L27/14641 , H04N5/347 , H04N5/376
Abstract: An image sensor architecture with multi-bit sampling is implemented within an image sensor system. A pixel signal produced in response to light incident upon a photosensitive element is converted to a multiple-bit digital value representative of the pixel signal. If the pixel signal exceeds a sampling threshold, the photosensitive element is reset. During an image capture period, digital values associated with pixel signals that exceed a sampling threshold are accumulated into image data.
Abstract translation: 在图像传感器系统中实现具有多位采样的图像传感器架构。 响应于入射到感光元件上的光而产生的像素信号被转换成表示像素信号的多位数字值。 如果像素信号超过采样阈值，则光敏元件被复位。 在图像捕获期间，与超过采样阈值的像素信号相关联的数字值被累积到图像数据中。
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公开(公告)号：US11284034B2
公开(公告)日：2022-03-22
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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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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Patent Agency Ranking
公开(公告)号：US20200036926A1
公开(公告)日：2020-01-30
申请号：US16503391
申请日：2019-07-03
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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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：US10362256B2
公开(公告)日：2019-07-23
申请号：US15759963
申请日：2016-09-20
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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公开(公告)号：US09681071B2
公开(公告)日：2017-06-13
申请号：US15333645
申请日：2016-10-25
Applicant: Rambus Inc.
Inventor： Craig M. Smith , Michael Guidash , Jay Endsley , Thomas Vogelsang , James E. Harris
IPC: H04N3/14 , H04N5/335 , H04N5/355 , H04N5/347 , H04N5/374 , H04N5/378 , H04N5/3745 , H01L27/146 , H01L31/062 , H01L31/113
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.
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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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