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公开(公告)号：US20190187189A1
公开(公告)日：2019-06-20
申请号：US15848804
申请日：2017-12-20
Applicant: Apple Inc.
Inventor： Robert E. Jeter , Fabien S. Faure , Rakesh L. Notani
IPC: G01R19/165 , G11C5/14 , G11C5/02 , G11C7/10 , G11C8/12
CPC classification number: G01R19/16566 , G06F13/1668 , G11C5/02 , G11C5/147 , G11C7/1066 , G11C7/1093 , G11C8/12 , G11C11/4074 , G11C11/4093 , G11C29/021 , G11C29/028 , G11C29/42 , G11C29/52 , G11C2207/2254
Abstract: A method and apparatus for predicting a reference voltage in a memory subsystem is disclosed. A memory subsystem includes a memory controller coupled to a memory. The memory controller includes a lookup table having a number of different reference voltage values each corresponding to one of a number of different performance states. The memory controller further includes calibration circuitry configured to determine reference voltages for operation in various performance states. Responsive to returning to a performance state after operating in another, the calibration circuitry may restore the reference voltage to its most recently used value, and also obtain a predicted reference voltage. Calibrations may be performed at both the restored reference voltage and the predicted reference voltage obtained from the lookup table. The subsequent operating reference voltage may then be selected based on which of the two calibrations resulted in the largest data eye width.
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公开(公告)号：US20190042492A1
公开(公告)日：2019-02-07
申请号：US16030794
申请日：2018-07-09
Applicant: Apple Inc.
Inventor： Robert E. Jeter , Brijesh Tripathi , Kiran Kattel , Rakesh L. Notani , Fabien S. Faure , Sukalpa Biswas , Kai Lun Hsiung , Neeraj Parik , Venkata Ramana Malladi , Shiva Kumar , Chaitanya Polapragada , Allen Kim
IPC: G06F13/16
CPC classification number: G06F13/1668 , G06F13/1689 , Y02D10/14
Abstract: An apparatus and method for encoding data are disclosed that may allow for performing periodic calibration operations on a communication link. A controller may determine multiple possible values for a reference voltage used with the communication link based on an initial value. Calibration operations may be performed using each possible value, and the results of the operations scored based on the width of data eyes measured during the calibration operations. The controller may then select a new value for the reference voltage from the multiple possible values dependent upon the scores of each of the multiple possible values.
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公开(公告)号：US10019387B2
公开(公告)日：2018-07-10
申请号：US14676174
申请日：2015-04-01
Applicant: Apple Inc.
Inventor： Robert E. Jeter , Brijesh Tripathi , Kiran Kattel , Rakesh L. Notani , Fabien S. Faure , Sukalpa Biswas , Kai Lun Hsiung , Neeraj Parik , Venkata Ramana Malladi , Shiva Kumar , Chaitanya Polapragada , Allen Kim
CPC classification number: G06F13/1668 , G06F13/1689 , Y02D10/14
Abstract: An apparatus and method for encoding data are disclosed that may allow for performing periodic calibration operations on a communication link. A controller may determine multiple possible values for a reference voltage used with the communication link based on an initial value. Calibration operations may be performed using each possible value, and the results of the operations scored based on the width of data eyes measured during the calibration operations. The controller may then select a new value for the reference voltage from the multiple possible values dependent upon the scores of each of the multiple possible values.
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公开(公告)号：US20160292094A1
公开(公告)日：2016-10-06
申请号：US14676174
申请日：2015-04-01
Applicant: Apple Inc.
Inventor： Robert E. Jeter , Brijesh Tripathi , Kiran Kattel , Rakesh L. Notani , Fabien S. Faure , Sukalpa Biswas , Kai Lun Hsiung , Neeraj Parik , Venkata Ramana Malladi , Shiva Kumar , Chaitanya Polapragada , Allen Kim
IPC: G06F13/16
CPC classification number: G06F13/1668 , G06F13/1689 , Y02D10/14
Abstract: An apparatus and method for encoding data are disclosed that may allow for performing periodic calibration operations on a communication link. A controller may determine multiple possible values for a reference voltage used with the communication link based on an initial value. Calibration operations may be performed using each possible value, and the results of the operations scored based on the width of data eyes measured during the calibration operations. The controller may then select a new value for the reference voltage from the multiple possible values dependent upon the scores of each of the multiple possible values.
Abstract translation: 公开了一种用于编码数据的装置和方法，其可以允许在通信链路上执行周期性校准操作。 控制器可以基于初始值来确定与通信链路一起使用的参考电压的多个可能值。 可以使用每个可能的值执行校准操作，并且基于在校准操作期间测量的数据眼睛的宽度来评估操作的结果。 然后，控制器可以根据多个可能值中的每一个的分数从多个可能值中选择参考电压的新值。
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公开(公告)号：US20160209866A1
公开(公告)日：2016-07-21
申请号：US14597321
申请日：2015-01-15
Applicant: Apple Inc.
Inventor： Robert E. Jeter , Neeraj Parik , Sukalpa Biswas
Abstract: A method and apparatus for calibration of a clock signal used in data transmission is disclosed. The method includes a calibration having coarse and fine grain procedures. The coarse grain procedure begins from the center of a current eye and performs reads while decrementing the delay provided to the clock signal until at least one bit fails. This is repeated, from the center of the eye, incrementing until again at least one bit fails. The lower and upper last passing points are recorded. A fine grain procedure includes performing reads while decrementing, from the lower last passing point, recording points at which each bit fails until all fail. The fine grain procedure further includes incrementing, from the upper last passing point, recording points at which each bit fails until fail. Thereafter, a clock delay corresponding to the center of the new eye is determined based on the calibration data.
Abstract translation: 公开了一种用于校准数据传输中使用的时钟信号的方法和装置。 该方法包括具有粗和细晶粒程序的校准。 粗粒度程序从当前眼睛的中心开始，并且在递减提供给时钟信号的延迟时执行读取，直到至少一个位失败。 这从眼睛的中心重复，直到再次至少一个位失败。 记录上下通过点。 细粒度过程包括从最下一个通过点向下递减执行读取，每个位失败的记录点直到全部失败。 细粒度过程还包括从上一个最后通过点增加每个位故障直到失败的记录点。 此后，基于校准数据确定与新眼睛的中心相对应的时钟延迟。
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Patent Agency Ranking
公开(公告)号：US09390681B2
公开(公告)日：2016-07-12
申请号：US14023418
申请日：2013-09-10
Applicant: APPLE INC.
Inventor： Ulrich T. Barnhoefer , Robert E. Jeter
CPC classification number: G09G5/10 , G09G3/3406 , G09G3/3607 , G09G2320/0271 , G09G2320/0626 , G09G2320/0646 , G09G2360/16
Abstract: Systems, methods, and devices are provided for temporal filtering of tone mapping slopes used in adjusting the power consumed by a backlight of an electronic display. One such method involves computing a current first target slope of an intermediate tone mapping function based at least in part on characteristics of a current image frame and temporally filtering the current first target slope to obtain a current first transition slope. A current backlight intensity of the display and a current final tone mapping function may be determined based at least in part on the current first transition slope. The current final tone mapping function may be applied to the current image frame or a subsequent image frame.
Abstract translation: 提供了系统，方法和装置，用于对调整电子显示器背光消耗的功率所使用的色调映射斜率进行时间滤波。 一种这样的方法包括至少部分地基于当前图像帧的特性来计算中间色调映射函数的当前第一目标斜率，并且对当前第一目标斜率进行暂时滤波以获得当前的第一转变斜率。 可以至少部分地基于当前的第一转变斜率来确定显示器的当前背光强度和当前最终色调映射功能。 当前的最终色调映射功能可以应用于当前图像帧或后续图像帧。
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公开(公告)号：US20140078192A1
公开(公告)日：2014-03-20
申请号：US14023418
申请日：2013-09-10
Applicant: APPLE INC.
Inventor： Ulrich T. Barnhoefer , Robert E. Jeter
IPC: G09G3/34
CPC classification number: G09G5/10 , G09G3/3406 , G09G3/3607 , G09G2320/0271 , G09G2320/0626 , G09G2320/0646 , G09G2360/16
Abstract: Systems, methods, and devices are provided for temporal filtering of tone mapping slopes used in adjusting the power consumed by a backlight of an electronic display. One such method involves computing a current first target slope of an intermediate tone mapping function based at least in part on characteristics of a current image frame and temporally filtering the current first target slope to obtain a current first transition slope. A current backlight intensity of the display and a current final tone mapping function may be determined based at least in part on the current first transition slope. The current final tone mapping function may be applied to the current image frame or a subsequent image frame.
Abstract translation: 提供了系统，方法和装置，用于对调整电子显示器背光消耗的功率所使用的色调映射斜率进行时间滤波。 一种这样的方法包括至少部分地基于当前图像帧的特性来计算中间色调映射函数的当前第一目标斜率，并且对当前第一目标斜率进行暂时滤波以获得当前的第一转变斜率。 可以至少部分地基于当前的第一转变斜率来确定显示器的当前背光强度和当前最终色调映射功能。 当前的最终色调映射功能可以应用于当前图像帧或后续图像帧。
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公开(公告)号：US20240211151A1
公开(公告)日：2024-06-27
申请号：US18596046
申请日：2024-03-05
Applicant: Apple Inc.
Inventor： Robert E. Jeter , Jingkui Zheng , David A. Knopf , Satish B. Dulam , Kai Lun Hsiung , Venkata Ramana Malladi , Rahul Ranjan
CPC classification number: G06F3/0632 , G06F3/0614 , G06F3/0658 , G06F3/0673 , G11C7/22 , G11C2207/2254
Abstract: An apparatus for performing a write data strobe concurrent with a reference voltage calibration is disclosed. A memory controller circuit is configured to convey a write clock signal to a memory. The memory controller circuit includes a calibration circuit configured to send a first command to memory to initiate a calibration of the write clock signal and, after an amount of time has elapsed, receive a calibration value from the memory. The memory controller further includes a delay circuit configured to apply a delay to the write clock signal, wherein the calibration circuit is configured to complete calibration of the write clock signal by adjusting the delay applied to the write clock signal in accordance with the calibration value. The calibration circuit is further configured to perform a reference voltage calibration concurrent with the calibration of the write clock signal.
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49.发明授权公开(公告)号：US11875871B2
公开(公告)日：2024-01-16
申请号：US18054056
申请日：2022-11-09
Applicant: Apple Inc.
Inventor： Robert E. Jeter , Rakesh L. Notani , Alma L. Juarez Dominguez
CPC classification number: G11C5/148 , G06F3/0604 , G06F3/0632 , G06F3/0659 , G06F3/0673 , G06F11/0727 , G06F11/0751 , G06F11/0772 , G11C5/141 , G11C2207/2254
Abstract: In an embodiment, a system includes an energy source and an integrated circuit that is coupled to one or more memory devices via a plurality of memory channels. A memory controller in the integrated circuit is programmable with a plurality of identifiers corresponding to the plurality of channels, and is further programmable with a command and a first identifier associated with the command. Responsive to the command, the memory controller is configured to perform one or more calibrations on a subset of the plurality of channels for which corresponding identifiers of the plurality of identifiers match the first identifier. Other ones of the plurality of channels, for which the corresponding identifiers do not match the first identifier, do not perform the calibration.
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公开(公告)号：US20230115215A1
公开(公告)日：2023-04-13
申请号：US18054056
申请日：2022-11-09
Applicant: Apple Inc.
Inventor： Robert E. Jeter , Rakesh L. Notani , Alma L. Juarez Dominguez
Abstract: In an embodiment, a system includes an energy source and an integrated circuit that is coupled to one or more memory devices via a plurality of memory channels. A memory controller in the integrated circuit is programmable with a plurality of identifiers corresponding to the plurality of channels, and is further programmable with a command and a first identifier associated with the command. Responsive to the command, the memory controller is configured to perform one or more calibrations on a subset of the plurality of channels for which corresponding identifiers of the plurality of identifiers match the first identifier. Other ones of the plurality of channels, for which the corresponding identifiers do not match the first identifier, do not perform the calibration.
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