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公开(公告)号：US10404262B2
公开(公告)日：2019-09-03
申请号：US15390362
申请日：2016-12-23
Applicant: Rambus Inc.
Inventor： Jared L. Zerbe , Barry W. Daly , Dustin T. Dunwell , Anthony C. Carusone , John C. Eble, III
Abstract: Methods and apparatuses featuring a multiplying injection-locked oscillator are described. Some embodiments include a pulse-generator-and-injector and one or more injection-locked oscillators. The outputs of the pulse-generator-and-injector can be injected into corresponding injection points of an injection-locked oscillator. In embodiments that include multiple injection-locked oscillators, the outputs of each injection-locked oscillator can be injected into the corresponding injection points of the next injection-locked oscillator. Some embodiments reduce deterministic jitter by dynamically modifying the loop length of an injection-locked oscillator, and/or by using a duty cycle corrector, and/or by multiplexing/blending the outputs from multiple delay elements of an injection-locked oscillator.
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公开(公告)号：US08867595B1
公开(公告)日：2014-10-21
申请号：US13913743
申请日：2013-06-10
Applicant: Rambus Inc.
Inventor： Lei Luo , Barry W. Daly , Kambiz Kaviani , John Cronan Eble, III , John Wilson
CPC classification number: H03K3/013 , G11C5/147 , G11C29/021 , G11C29/022 , G11C29/028 , H04L25/0296 , H04L25/06 , H04L25/08
Abstract: A signal on a transmitter tracks noise on a ground node in a manner decoupled from a positive node of a power supply. The signal is transmitted from the transmitter to the receiver. A reference voltage is generated on the receiver to track noise on a ground node in the receiver. Consequently, the received signal and the reference voltage have substantially the same noise characteristics, which become common mode noise that can be cancelled out when these two signals are compared against each other. In a further embodiment, the reference voltage is compared against a predetermined calibration pattern. An error signal is generated based on a difference between the sampler output and the predetermined calibration pattern. The error signal is then used to adjust the reference voltage so that the DC level of the reference voltage is positioned substantially in the middle of the received signal.
Abstract translation: 发射机上的信号以与电源的正节点分离的方式跟踪接地节点上的噪声。 信号从发射机发射到接收机。 在接收机上产生参考电压以跟踪接收机中接地节点上的噪声。 因此，接收信号和参考电压具有基本上相同的噪声特性，这些噪声特性成为当这两个信号彼此进行比较时可以消除的共模噪声。 在另一实施例中，将参考电压与预定校准图案进行比较。 基于采样器输出和预定校准图案之间的差异产生误差信号。 然后使用误差信号来调整参考电压，使得参考电压的直流电平基本上位于接收信号的中间。
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公开(公告)号：US20170207791A1
公开(公告)日：2017-07-20
申请号：US15390362
申请日：2016-12-23
Applicant: Rambus Inc.
Inventor： Jared L. Zerbe , Barry W. Daly , Dustin T. Dunwell , Anthony C. Carusone , John C. Eble, III
CPC classification number: H03L7/24 , H03B27/00 , H03K3/0315 , H03K3/0322 , H03K5/133 , H03K5/1565
Abstract: Methods and apparatuses featuring a multiplying injection-locked oscillator are described. Some embodiments include a pulse-generator-and-injector and one or more injection-locked oscillators. The outputs of the pulse-generator-and-injector can be injected into corresponding injection points of an injection-locked oscillator. In embodiments that include multiple injection-locked oscillators, the outputs of each injection-locked oscillator can be injected into the corresponding injection points of the next injection-locked oscillator. Some embodiments reduce deterministic jitter by dynamically modifying the loop length of an injection-locked oscillator, and/or by using a duty cycle corrector, and/or by multiplexing/blending the outputs from multiple delay elements of an injection-locked oscillator.
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公开(公告)号：US09564911B2
公开(公告)日：2017-02-07
申请号：US14858830
申请日：2015-09-18
Applicant: Rambus Inc.
Inventor： Jared L. Zerbe , Barry W. Daly , Dustin T. Dunwell , Anthony Chan Carusone , John C. Eble, III
CPC classification number: H03L7/24 , H03B27/00 , H03K3/0315 , H03K3/0322 , H03K5/133 , H03K5/1565
Abstract: Methods and apparatuses featuring a multiplying injection-locked oscillator are described. Some embodiments include a pulse-generator-and-injector and one or more injection-locked oscillators. The outputs of the pulse-generator-and-injector can be injected into corresponding injection points of an injection-locked oscillator. In embodiments that include multiple injection-locked oscillators, the outputs of each injection-locked oscillator can be injected into the corresponding injection points of the next injection-locked oscillator. Some embodiments reduce deterministic jitter by dynamically modifying the loop length of an injection-locked oscillator, and/or by using a duty cycle corrector, and/or by multiplexing/blending the outputs from multiple delay elements of an injection-locked oscillator.
Abstract translation: 描述了具有乘法注入锁定振荡器的方法和装置。 一些实施例包括脉冲发生器和注射器以及一个或多个注入锁定的振荡器。 脉冲发生器和注射器的输出可以注入到注入锁定振荡器的相应注入点。 在包括多个注入锁定的振荡器的实施例中，每个注入锁定振荡器的输出可以被注入到下一个注入锁定振荡器的相应注入点。 一些实施例通过动态地修改注入锁定振荡器的环路长度和/或通过使用占空比校正器和/或通过复用/混合来自注入锁定振荡器的多个延迟元件的输出来减少确定性抖动。
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Patent Agency Ranking
公开(公告)号：US09166838B1
公开(公告)日：2015-10-20
申请号：US14489814
申请日：2014-09-18
Applicant: Rambus Inc.
Inventor： Lei Luo , Barry W. Daly , Kambiz Kaviani , John Cronan Eble, III , John Wilson
CPC classification number: H03K3/013 , G11C5/147 , G11C29/021 , G11C29/022 , G11C29/028 , H04L25/0296 , H04L25/06 , H04L25/08
Abstract: A signal on a transmitter tracks noise on a ground node in a manner decoupled from a positive node of a power supply. The signal is transmitted from the transmitter to the receiver. A reference voltage is generated on the receiver to track noise on a ground node in the receiver. Consequently, the received signal and the reference voltage have substantially the same noise characteristics, which become common mode noise that can be cancelled out when these two signals are compared against each other. In a further embodiment, the reference voltage is compared against a predetermined calibration pattern. An error signal is generated based on a difference between the sampler output and the predetermined calibration pattern. The error signal is then used to adjust the reference voltage so that the DC level of the reference voltage is positioned substantially in the middle of the received signal.
Abstract translation: 发射机上的信号以与电源的正节点分离的方式跟踪接地节点上的噪声。 信号从发射机发射到接收机。 在接收机上产生参考电压以跟踪接收机中接地节点上的噪声。 因此，接收信号和参考电压具有基本上相同的噪声特性，这些噪声特性成为当这两个信号彼此进行比较时可以消除的共模噪声。 在另一实施例中，将参考电压与预定校准图案进行比较。 基于采样器输出和预定校准图案之间的差异产生误差信号。 然后使用误差信号来调整参考电压，使得参考电压的直流电平基本上位于接收信号的中间。
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公开(公告)号：US09564879B1
公开(公告)日：2017-02-07
申请号：US14855244
申请日：2015-09-15
Applicant: Rambus Inc.
Inventor： Lei Luo , Barry W. Daly , Kambiz Kaviani , John Cronan Eble, III , John Wilson
CPC classification number: H03K3/013 , G11C5/147 , G11C29/021 , G11C29/022 , G11C29/028 , H04L25/0296 , H04L25/06 , H04L25/08
Abstract: A signal on a transmitter tracks noise on a ground node in a manner decoupled from a positive node of a power supply. The signal is transmitted from the transmitter to the receiver. A reference voltage is generated on the receiver to track noise on a ground node in the receiver. Consequently, the received signal and the reference voltage have substantially the same noise characteristics, which become common mode noise that can be cancelled out when these two signals are compared against each other. In a further embodiment, the reference voltage is compared against a predetermined calibration pattern. An error signal is generated based on a difference between the sampler output and the predetermined calibration pattern. The error signal is then used to adjust the reference voltage so that the DC level of the reference voltage is positioned substantially in the middle of the received signal.
Abstract translation: 发射机上的信号以与电源的正节点分离的方式跟踪接地节点上的噪声。 信号从发射机发射到接收机。 在接收机上产生参考电压以跟踪接收机中接地节点上的噪声。 因此，接收信号和参考电压具有基本相同的噪声特性，这些噪声特性成为当这两个信号彼此进行比较时可以消除的共模噪声。 在另一实施例中，将参考电压与预定校准图案进行比较。 基于采样器输出和预定校准图案之间的差异产生误差信号。 然后使用误差信号来调整参考电压，使得参考电压的直流电平基本上位于接收信号的中间。
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公开(公告)号：US09368172B2
公开(公告)日：2016-06-14
申请号：US14572674
申请日：2014-12-16
Applicant: Rambus Inc.
Inventor： Robert E. Palmer , Barry W. Daly , William F. Stonecypher
CPC classification number: G11C7/22 , G06F13/1689
Abstract: A memory controller that extends the window when reading data from the memory device to compensate for fluctuations in a read strobe delay. The memory controller includes a communication port that receives a timing reference signal for reading data from a memory device. A control circuit generates a gating signal indicative of a read window. A gating adjustment circuit generates an adjusted gating signal indicative of an adjusted read window based on the gating signal and the timing reference signal. A gating circuit generates a first gated timing reference signal for reading data by gating a delayed version of the timing reference signal with the adjusted gating signal.
Abstract translation: 存储器控制器，当从存储器件读取数据以补偿读取选通延迟的波动时，扩展窗口。 存储器控制器包括接收用于从存储器件读取数据的定时参考信号的通信端口。 控制电路产生指示读窗口的门控信号。 门控调整电路基于门控信号和定时参考信号产生指示经调整的读窗口的调整门控信号。 选通电路产生用于通过利用调整的门控信号门控定时参考信号的延迟版本来读取数据的第一选通定时参考信号。
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公开(公告)号：US20160079993A1
公开(公告)日：2016-03-17
申请号：US14858830
申请日：2015-09-18
Applicant: Rambus Inc.
Inventor： Jared L. Zerbe , Barry W. Daly , Dustin T. Dunwell , Anthony C. Carusone , John C. Eble, III
CPC classification number: H03L7/24 , H03B27/00 , H03K3/0315 , H03K3/0322 , H03K5/133 , H03K5/1565
Abstract: Methods and apparatuses featuring a multiplying injection-locked oscillator are described. Some embodiments include a pulse-generator-and-injector and one or more injection-locked oscillators. The outputs of the pulse-generator-and-injector can be injected into corresponding injection points of an injection-locked oscillator. In embodiments that include multiple injection-locked oscillators, the outputs of each injection-locked oscillator can be injected into the corresponding injection points of the next injection-locked oscillator. Some embodiments reduce deterministic jitter by dynamically modifying the loop length of an injection-locked oscillator, and/or by using a duty cycle corrector, and/or by multiplexing/blending the outputs from multiple delay elements of an injection-locked oscillator.
Abstract translation: 描述了具有乘法注入锁定振荡器的方法和装置。 一些实施例包括脉冲发生器和注射器以及一个或多个注入锁定的振荡器。 脉冲发生器和注射器的输出可以注入到注入锁定振荡器的相应注入点。 在包括多个注入锁定振荡器的实施例中，每个注入锁定振荡器的输出可以被注入到下一个注入锁定振荡器的相应注入点。 一些实施例通过动态地修改注入锁定振荡器的环路长度和/或通过使用占空比校正器和/或通过复用/混合来自注入锁定振荡器的多个延迟元件的输出来减少确定性抖动。
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公开(公告)号：US20150221354A1
公开(公告)日：2015-08-06
申请号：US14572674
申请日：2014-12-16
Applicant: Rambus Inc.
Inventor： Robert E. Palmer , Barry W. Daly , William F. Stonecypher
IPC: G11C7/22
CPC classification number: G11C7/22 , G06F13/1689
Abstract: A memory controller that extends the window when reading data from the memory device to compensate for fluctuations in a read strobe delay. The memory controller includes a communication port that receives a timing reference signal for reading data from a memory device. A control circuit generates a gating signal indicative of a read window. A gating adjustment circuit generates an adjusted gating signal indicative of an adjusted read window based on the gating signal and the timing reference signal. A gating circuit generates a first gated timing reference signal for reading data by gating a delayed version of the timing reference signal with the adjusted gating signal.
Abstract translation: 存储器控制器，当从存储器件读取数据以补偿读取选通延迟的波动时，扩展窗口。 存储器控制器包括接收用于从存储器件读取数据的定时参考信号的通信端口。 控制电路产生指示读窗口的门控信号。 门控调整电路基于门控信号和定时参考信号产生指示经调整的读窗口的调整门控信号。 选通电路产生用于通过利用调整的门控信号门控定时参考信号的延迟版本来读取数据的第一选通定时参考信号。
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