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公开(公告)号：US20160323524A1
公开(公告)日：2016-11-03
申请号：US15100976
申请日：2014-12-03
Applicant: RAMBUS INC.
Inventor： Craig M. Smith , Frank Armstrong , Jay Endsley , Thomas Vogelsang , James E. Harris , John Ladd , Michael Guidash
CPC classification number: H04N5/355 , H04N5/23245 , H04N5/2355 , H04N5/347 , H04N5/35536 , H04N5/361 , H04N5/37457 , H04N9/045
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.
Abstract translation: 集成电路图像传感器内的像素阵列在第一帧间隔期间暴露于表示场景的光，然后在第一帧间隔内对第一次数进行过采样，以生成对应的第一数量的图像数据帧， 可以构造第一输出图像。 对图像数据的第一数量帧中的一个或多个进行评估，以确定场景中的亮度范围是否需要将过采样因子从第一数量调整到第二数量，如果是，则调整过采样因子，使得 像素阵列在第二帧间隔内对第二次数进行过采样，以生成可以从其构造第二输出图像的图像数据的对应的第二数量帧。
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公开(公告)号：US09001251B2
公开(公告)日：2015-04-07
申请号：US14482065
申请日：2014-09-10
Applicant: Rambus Inc.
Inventor： Craig M. Smith , Michael Guidash , Jay Endsley , Thomas Vogelsang , James E. Harris
IPC: H04N3/14 , H04N5/335 , H04N5/378 , 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.
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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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：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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Patent Agency Ranking
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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公开(公告)号：US10154220B2
公开(公告)日：2018-12-11
申请号：US15563875
申请日：2016-03-31
Applicant: Rambus Inc.
Inventor： Thomas Vogelsang , Jay Endsley , Michael Guidash , Craig M. Smith
Abstract: 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：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：US20170310910A1
公开(公告)日：2017-10-26
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: H04N5/355 , H04N5/3745 , H04N5/347 , H01L27/146 , H04N5/378 , H04N5/374
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：US20170195596A1
公开(公告)日：2017-07-06
申请号：US15312778
申请日：2015-05-21
Applicant: Rambus Inc.
Inventor： Thomas Vogelsang , Craig M. Smith
CPC classification number: H04N5/35581 , G06T7/248 , H04N5/23232 , H04N5/23245 , H04N5/2351 , H04N5/343 , H04N5/347 , H04N5/37457 , H04N5/378 , H04N9/045
Abstract: In an integrated-circuit image sensor having a pixel array, a first subframe readout policy is selected from among a plurality of subframe readout policies, each of the subframe readout policies specifying a first number of subframes of image data to be readout from the pixel array for each output image frame and respective exposure durations for each of the first number of subframes of image data, wherein a shortest one of the exposure durations is uniform for each of the subframe readout policies. Each of the first number of subframes of image data is read out from the pixel array following the respective exposure durations thereof while applying a respective analog readout gain. The analog readout gain applied during readout of at least a first subframe of the first number of subframes is scaled according to a ratio of the shortest one of the exposure durations to the exposure duration of the first subframe.
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