公开(公告)号：US5973512A

公开(公告)日：1999-10-26

申请号：US982959

申请日：1997-12-02

Applicant: Alan J. Baker

Inventor： Alan J. Baker

IPC: H03K19/003 ,  H03K19/03 ,  H03K19/94

CPC classification number: H03K19/00361

Abstract: A buffer having an output slew rate which is relatively insensitive to loading and supply voltage. The output buffer includes an output node, a first half-circuit and a second half-circuit. The first half-circuit is for slewing the output node from a first voltage to a second voltage. The first half-circuit includes a first output transistor connected between the output node and a second voltage reference node, a first switching device connected from a gate of the first output transistor to the second voltage reference node, a second switching device connected from the gate of the output transistor to a first node, a first current source connected from a first voltage reference node to the first node, and a first capacitor connected from the output node to the first node. The second half-circuit is for slewing the output node from the second voltage to the first voltage. The second half-circuit includes a second output transistor connected between the output node and the first voltage reference node, a third switching device connected from the gate of the second output transistor to the first voltage reference node, a fourth switching device connected from the gate of the second output transistor to a second node, a second current source connected from the second voltage reference node to the second node, and a second capacitor connected from the output node to the second node.

Abstract translation: nA缓冲器具有对负载和电源电压相对不敏感的输出转换速率。 输出缓冲器包括输出节点，第一半电路和第二半电路。 第一半电路用于将输出节点从第一电压转换到第二电压。 第一半电路包括连接在输出节点和第二参考节点之间的第一输出晶体管，从第一输出晶体管的栅极连接到第二参考电压的第一开关器件，从栅极连接的第二开关器件 输出晶体管连接到第一节点，从第一电压参考节点连接到第一节点的第一电流源以及从输出节点连接到第一节点的第一电容器。 第二半电路用于将输出节点从第二电压转换到第一电压。 第二半电路包括连接在输出节点和第一参考电压节点之间的第二输出晶体管，从第二输出晶体管的栅极连接到第一参考电压的第三开关器件，从栅极连接的第四开关器件 将第二输出晶体管连接到第二节点，从第二参考节点连接到第二节点的第二电流源，以及从输出节点连接到第二节点的第二电容器。

公开(公告)号：US5978417A

公开(公告)日：1999-11-02

申请号：US713626

申请日：1996-09-13

Applicant: Alan J. Baker ,  Marc H. Ryat

Inventor： Alan J. Baker ,  Marc H. Ryat

IPC: H03H11/04 ,  H03H11/12 ,  H04B3/14 ,  H03H7/30 ,  G06F17/10 ,  H03H5/00 ,  G03G11/04

CPC classification number: H03H11/04 ,  H03H11/1213 ,  H04B3/145

Abstract: An adaptive cable equalizer is provided with a simple architecture, wherein a single control structure: controls the adaptation of the filter for compensating for cable length while simultaneously compensating for process and temperature variations; optimizes the SNR at any cable length by controlling biasing current sources; and uses a two-stage architecture which eliminates start-up problems and optimizes output levels to obtain optimal dc restoration while simultaneously allowing for independent optimization of the output levels of the recovered data in accordance with other requirements as desired. An analog adaptive equalizing filter is used for accurately synthesizing the inverse transfer function of cables of variable lengths. Data rates up to and beyond 400 Mbps are supported and the adaptive behavior automatically compensates for different cable lengths as well as process variations (with respect to the process(es) used for fabricating the equalizer in a monolithic form) and temperature variations.

Abstract translation: 自适应电缆均衡器具有简单的架构，其中单个控制结构：控制滤波器的适应以补偿电缆长度，同时补偿过程和温度变化; 通过控制偏置电流源优化任何电缆长度的SNR; 并且使用两级架构，其消除启动问题并优化输出电平以获得最佳直流恢复，同时允许根据需要根据其他要求独立地优化恢复数据的输出电平。 模拟自适应均衡滤波器用于精确地合成可变长度的电缆的反向传递函数。 支持高达和超过400Mbps的数据速率，并且自适应行为自动补偿不同的电缆长度以及工艺变化（相对于以整体形式制造均衡器的过程）和温度变化。

公开(公告)号：US4691192A

公开(公告)日：1987-09-01

申请号：US901094

申请日：1986-08-27

Applicant: Alan J. Baker

Inventor： Alan J. Baker

IPC: G01L3/10 ,  G01P3/56 ,  H03M1/64 ,  H03K13/02

CPC classification number: H03M1/645 ,  G01L3/109 ,  G01P3/565

Abstract: An angle transducer includes input rotor and reference rotor assemblies that are mounted for rotation upon a common shaft and that cooperate with respective moveable input stator and fixed reference stator assemblies to produce signals whose phase difference represents an input angle. Diametrically opposed sensors in each stator assembly achieve enhanced eccentricity error reduction by producing separate signals whose phases are averaged after the phase of each is individually measured. A phase measurement technique does not rely upon the mechanical accuracy of the angular placement of the poles for the rotor assemblies. A phase measurement between two signals is performed by beginning on an arbitrary zero crossing of the signal from the reference stator and forming, for each rotor, the sum of the times for the zero crossings for one complete revolution. To avoid the effects of crosstalk the rotors may have different numbers of poles. The sums, the different numbers of poles, the time for one revolution, and, for each rotor, the number of poles from the pole corresponding to the first term in the associated sum to an absolute reference pole, are the variables in a phase formula producing a high accuracy and resolution unified answer free of separate coarse and fine components. The absolute reference poles may be missing poles whose absence is detected and replaced with an estimate. State and time of transition data for one revolution's worth of all of the signals from the stators are temporarily captured in a small high speed revolving buffer and then immediately stored in a larger wrap-around memory under the control of an interrupt system of a microprocessor. To perform an angle measurement the microprocessor analyzes the last complete revolution's worth of data, beginning at any point in the revolution.

Abstract translation: 角度传感器包括输入转子和参考转子组件，其被安装成在公共轴上旋转并且与相应的可移动输入定子和固定参考定子组件配合以产生相位差代表输入角的信号。 每个定子组件中的直径相对的传感器通过产生单独的信号来实现增强的偏心误差减小，其中每个信号的相位在各自的相位被单独测量之后被平均化。 相位测量技术不依赖于用于转子组件的极的角度放置的机械精度。 通过从参考定子的信号的任意过零点开始，并且对于每个转子，对于一次完整的转数来形成零交叉的时间之和来执行两个信号之间的相位测量。 为了避免串扰的影响，转子可能具有不同的极数。 总和，不同的极数，一转的时间，以及对于每个转子，相对于与绝对参考极相关联的和的第一项的极的极数是相位公式中的变量 产生高精度和分辨率的统一回答，不含单独的粗精细组件。 绝对参考极点可能是缺失极点，其缺失被检测并且被替换为估计值。 来自定子的所有信号的一转数值的转换数据的状态和时间被临时捕获在小型高速旋转缓冲器中，然后在微处理器的中断系统的控制下立即存储在更大的环绕存储器中。 为了执行角度测量，微处理器从革命中的任何一点开始分析最后一次完整革命的数据。

公开(公告)号：US4686510A

公开(公告)日：1987-08-11

申请号：US922495

申请日：1986-10-23

Applicant: Alan J. Baker

Inventor： Alan J. Baker

IPC: G01L3/10 ,  G01P3/56 ,  H03M1/64 ,  H03K13/02 ,  G01D5/34

CPC classification number: H03M1/645 ,  G01L3/109 ,  G01P3/565

Abstract: A method of averaging a plurality of measured modulo values respectively produced by a corresponding plurality of measuring devices and each corresponding to the same input parameter applied thereto, the method comprising the steps of:applying a convenient same value of the input parameter to each of the measuring devices;selecting one of the plurality of measuring devices as a reference;measuring the offset between the measured modulo values of the measuring device selected as a reference and each of the remaining measuring devices;applying an arbitrary same value of the input parameter to each of the measuring devices;measuring the respective modulo values from the plurality of measuring devices;diminishing each of the measured modulo values from a non-reference measuring device by the offset associated with that measuring device; andaveraging the measured modulo value from the reference measuring device and the diminished measured modulo values.

Abstract translation: 一种对由多个测量装置分别产生的多个测量模数进行平均的方法，每一测量装置对应于与其相应的输入参数相对应的方法，该方法包括以下步骤：将输入参数的方便的相同值应用于 测量装置; 选择所述多个测量装置中的一个作为参考; 测量作为参考的测量装置的测量模数值与每个剩余的测量装置之间的偏移量; 对每个测量装置施加任意相同的输入参数值; 测量来自所述多个测量装置的相应模数值; 通过与该测量装置相关联的偏移将每个测量的模数值从非参考测量装置减小; 并且从参考测量装置平均测得的模数值和减小的测得的模数值。

公开(公告)号：US4766367A

公开(公告)日：1988-08-23

申请号：US75140

申请日：1987-07-20

Applicant: Kenneth R. Saller ,  Alan J. Baker ,  Steven O. Smith

Inventor： Kenneth R. Saller ,  Alan J. Baker ,  Steven O. Smith

IPC: G05F3/26

CPC classification number: G05F3/265

Abstract: An improved current mirror is described which has utility as either a stand alone current source or as a gain block whenever current gain or transimpedance gain is required. When used as a current source the current mirror exhibits higher output impedance, and when used as a gain block, the current mirror exhibits improved higher frequency performance and high transimpedance gain than prior art current mirrors.

Abstract translation: 描述了一种改进的电流镜，其具有作为独立电流源或作为需要当前增益或跨阻增益的增益块的效用。 当用作电流源时，电流镜表现出更高的输出阻抗，并且当用作增益块时，电流镜表现出比现有技术的电流镜更好的频率性能和高跨阻增益。

公开(公告)号：US4495670A

公开(公告)日：1985-01-29

申请号：US462520

申请日：1983-01-31

Applicant: Alan J. Baker

Inventor： Alan J. Baker

IPC: A47L1/16 ,  A47L13/022 ,  B60S3/04 ,  A47L1/06 ,  B60S1/04

CPC classification number: B60S3/045 ,  A47L1/16 ,  A47L13/022

Abstract: A plate-like structure features a pair of relatively opposing, equilateral, predominantly smooth faces, each of which is bordered completely by its own set of rigid working edges. A hand guard is also provided to removably receive any of the side surfaces extending between the opposing faces and the working edges adjacent to the selected side surface.

Abstract translation: 板状结构具有一对相对的相对的，等边的，主要是平滑的面，每个面通过其自己的一组刚性工作边缘完全界定。 还设置护手罩以可移除地接收在相对面和邻近所选侧表面的工作边缘之间延伸的任何侧表面。

公开(公告)号：US4697168A

公开(公告)日：1987-09-29

申请号：US920830

申请日：1986-10-20

Applicant: Alan J. Baker

Inventor： Alan J. Baker

IPC: G01L3/10 ,  G01P3/56 ,  H03M1/64 ,  H03K13/02 ,  G06F15/20

CPC classification number: G01P3/565 ,  G01L3/109 ,  H03M1/645

Abstract: An angle transducer includes input rotor and reference rotor assemblies that are mounted for rotation upon a common shaft and that cooperate with respective moveable input stator and fixed reference stator assemblies to produce signals whose phase difference represents an input angle. Diametrically opposed sensors in each stator assembly achieve enhanced eccentricity error reduction by producing separate signals whose phases are averaged after the phase of each is individually measured. A phase measurement technique does not rely upon the mechanical accuracy of the angular placement of the poles for the rotor assemblies. A phase measurement between two signals is performed by beginning on an arbitrary zero crossing of the signal from the reference stator and forming, for each rotor, the sum of the times for the zero crossings for one complete revolution.

Abstract translation: 角度传感器包括输入转子和参考转子组件，其被安装成在公共轴上旋转并且与相应的可移动输入定子和固定参考定子组件配合以产生相位差代表输入角的信号。 每个定子组件中的直径相对的传感器通过产生单独的信号来实现增强的偏心误差减小，其中每个信号的相位在各自的相位被单独测量之后被平均化。 相位测量技术不依赖于用于转子组件的极的角度放置的机械精度。 通过从参考定子的信号的任意过零点开始，并且对于每个转子，对于一次完整的转数来形成零交叉的时间之和来执行两个信号之间的相位测量。

公开(公告)号：US4630033A

公开(公告)日：1986-12-16

申请号：US479043

申请日：1983-03-25

Applicant: Alan J. Baker

Inventor： Alan J. Baker

IPC: G01L3/10 ,  G01P3/56 ,  H03M1/64 ,  H03M1/24

CPC classification number: G01L3/109 ,  G01P3/565 ,  H03M1/645

Abstract: An angle transducer includes input rotor and reference rotor assemblies that are mounted for rotation upon a common shaft and that cooperate with respective moveable input stator and fixed reference stator assemblies to produce signals whose phase difference represents an input angle. Diametrically opposed sensors in each stator assembly achieve enhanced eccentricity error reduction by producing separate signals whose phases are averaged after the phase of each is individually measured. A phase measurement technique does not rely upon the mechanical accuracy of the angular placement of the poles for the rotor assemblies. A phase measurement between two signals is performed by beginning on an arbitrary zero crossing of the signal from the reference stator and forming, for each rotor, the sum of the times for the zero crossings for one complete revolution. To avoid the effects of crosstalk the rotors may have different numbers of poles. The sums, the different numbers of poles, the time for one revolution, and, for each rotor, the number of poles from the pole corresponding to the first term in the associated sum to an absolute reference pole, are the variables in a phase formula producing a high accuracy and resolution unified answer free of separate coarse and fine components. The absolute reference poles may be missing poles whose absence is detected and replaced with an estimate. State and time of transition data for one revolution's worth of all of the signals from the stators are temporarily captured in a small high speed revolving buffer and then immediately stored in a larger wrap-around memory under the control of an interrupt system of a microprocessor. To perform an angle measurement the microprocessor analyzes the last complete revolution's worth of data, beginning at any point in the revolution.

Abstract translation: 角度传感器包括输入转子和参考转子组件，其被安装成在公共轴上旋转并且与相应的可移动输入定子和固定参考定子组件配合以产生相位差代表输入角的信号。 每个定子组件中的直径相对的传感器通过产生单独的信号来实现增强的偏心误差减小，其中每个信号的相位在各自的相位被单独测量之后被平均化。 相位测量技术不依赖于用于转子组件的极的角度放置的机械精度。 通过从参考定子的信号的任意过零点开始，并且对于每个转子，对于一次完整的转数来形成零交叉的时间之和来执行两个信号之间的相位测量。 为了避免串扰的影响，转子可能具有不同的极数。 总和，不同的极数，一转的时间，以及对于每个转子，相对于与绝对参考极相关联的和的第一项的极的极数是相位公式中的变量 产生高精度和分辨率的统一回答，不含单独的粗精细组件。 绝对参考极点可能是缺失极点，其缺失被检测并且被替换为估计值。 来自定子的所有信号的一转数值的转换数据的状态和时间被临时捕获在小型高速旋转缓冲器中，然后在微处理器的中断系统的控制下立即存储在更大的环绕存储器中。 为了执行角度测量，微处理器从革命中的任何一点开始分析最后一次完整革命的数据。

公开(公告)号：US4533902A

公开(公告)日：1985-08-06

申请号：US478759

申请日：1983-03-25

Applicant: Alan J. Baker ,  Robert W. Leiby

Inventor： Alan J. Baker ,  Robert W. Leiby

IPC: G01D5/247 ,  H03M1/64 ,  H03K13/02 ,  G08C9/00

CPC classification number: G01D5/247 ,  H03M1/645

Abstract: An angle transducer includes input rotor and reference rotor assemblies that are mounted for rotation upon a common shaft and that cooperate with respective moveable input stator and fixed reference stator assemblies to produce signals whose phase difference represents an input angle. Diametrically opposed sensors in each stator assembly achieve enhanced eccentricity error reduction by producing separate signals whose phases are averaged after the phase of each is individually measured. A phase measurement technique does not rely upon the mechanical accuracy of the angular placement of the poles for the rotor assemblies. A phase measurement between two signals is performed by beginning on an arbitrary zero crossing of the signal from the reference stator and forming, for each rotor, the sum of the times for the zero crossings for one complete revolution. To avoid the effects of crosstalk the rotors may have different numbers of poles. The sums, the different numbers of poles, the time for one revolution, and, for each rotor, the number of poles from the pole corresponding to the first term in the associated sum to an absolute reference pole, are the variables in a phase formula producing a high accuracy and resolution unified answer free of separate coarse and fine components.

Abstract translation: 角度传感器包括输入转子和参考转子组件，其被安装成在公共轴上旋转并且与相应的可移动输入定子和固定参考定子组件配合以产生相位差代表输入角的信号。 每个定子组件中的直径相对的传感器通过产生单独的信号来实现增强的偏心误差减小，其中每个信号的相位在各自的相位被单独测量之后被平均化。 相位测量技术不依赖于用于转子组件的极的角度放置的机械精度。 通过从来自参考定子的信号的任意过零点开始，并且对于每个转子，对于一次完整的转数，形成零交叉的时间之和来执行两个信号之间的相位测量。 为了避免串扰的影响，转子可能具有不同的极数。 总和，不同的极数，一转的时间，以及对于每个转子，相对于与绝对参考极相关联的和的第一项的极的极数是相位公式中的变量 产生高精度和分辨率的统一回答，不含单独的粗精细组件。