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1. 发明授权

US06463392B1 System and method for adjusting a sampling time in a logic analyzer 失效
标题翻译：用于调整逻辑分析仪中采样时间的系统和方法
公开(公告)号：US06463392B1
公开(公告)日：2002-10-08
申请号：US09375307
申请日：1999-08-16
申请人： Richard A. Nygaard , Edward G. Pumphrey , Keith C. Griggs
发明人： Richard A. Nygaard , Edward G. Pumphrey , Keith C. Griggs
IPC分类号： G01D1800
CPC分类号： G01R31/31937
摘要： A system and method are provided for detecting a stable region in a data signal to facilitate the alignment between a data signal and a corresponding clock signal. The system includes a processor coupled to a local interface and a memory coupled to the local interface. The system also includes a boundary detection circuit configured to perform a simultaneous sampling of a reference signal and a delayed reference signal to ascertain a degree of stability of a position in the reference signal. The reference signal is the signal received from the target system and the delayed reference signal is a delayed copy of the reference signal. The system also includes boundary detection logic stored on the memory and executed by the processor to control the operation of the boundary detection circuit. The boundary detection logic includes logic to detect a boundary of the stable region of the reference.
摘要翻译：提供了一种用于检测数据信号中的稳定区域以促进数据信号与对应的时钟信号之间的对准的系统和方法。该系统包括耦合到本地接口的处理器和耦合到本地接口的存储器。该系统还包括边界检测电路，其被配置为执行参考信号和延迟参考信号的同时采样，以确定参考信号中的位置的稳定度。参考信号是从目标系统接收的信号，延迟的参考信号是参考信号的延迟拷贝。该系统还包括存储在存储器中并由处理器执行以控制边界检测电路的操作的边界检测逻辑。边界检测逻辑包括检测参考的稳定区域的边界的逻辑。

2. 发明授权

US4812681A NMOS analog voltage comparator 失效
标题翻译： NMOS模拟电压比较器
公开(公告)号：US4812681A
公开(公告)日：1989-03-14
申请号：US48164
申请日：1987-05-11
申请人： Edward G. Pumphrey
发明人： Edward G. Pumphrey
IPC分类号： G01R19/165 , H03K5/08 , H03K17/14 , H03K17/30 , H03K5/24
CPC分类号： H03K17/145 , G01R19/16519 , H03K17/302
摘要： An NMOS analog voltage comparator is disclosed having two matching cascaded inverter-pairs. The comparator has fast response time, is not sensitive to temperature variations while operating, and operates independent of integrated circuit parameter variations encountered during circuit manufacture.

3. 发明授权

US5283631A Programmable capacitance delay element having inverters controlled by adjustable voltage to offset temperature and voltage supply variations 失效
标题翻译：可编程电容延迟元件具有由可调电压控制的逆变器，以抵消温度和电压供应变化
公开(公告)号：US5283631A
公开(公告)日：1994-02-01
申请号：US786633
申请日：1991-11-01
申请人： Christopher Koerner , Alberto Gutierrez, Jr. , Edward G. Pumphrey
发明人： Christopher Koerner , Alberto Gutierrez, Jr. , Edward G. Pumphrey
IPC分类号： G01R31/28 , G01R31/319 , H03K5/00 , H03K5/13 , H03M1/66 , H03M1/68 , H03M1/74 , H03K19/20
CPC分类号： H03K5/131 , G01R31/2841 , G01R31/31922 , H03K5/133 , H03M1/66 , H03M1/687 , H03K2005/00097 , H03M1/745 , H03M1/747
摘要： A delay element for fine tuning the position in time of timing edges of an input signal, comprising a first and a second inventer, each comprising a data input, a control input and a data output. The delay element further comprises a node comprised of a connection between the data output of the first inverter and the data input of the second inverter. An adjustable control voltage is included for applying a biasing voltage to the first and second control inputs to thereby control the amount of charge supplied to the node. Finally, the variable capacitance means is connected to the node for applying finite amounts of capacitance to the node to delay and thereby fine tune in time the timing edges of the input signal propagating from the first inverter to the second inverter.
摘要翻译：一种用于在输入信号的定时边沿的时间内微调位置的延迟元件，包括第一和第二发明者，每个包括数据输入，控制输入和数据输出。延迟元件还包括由第一反相器的数据输出与第二反相器的数据输入之间的连接构成的节点。包括可调整的控制电压，以将偏置电压施加到第一和第二控制输入，从而控制提供给节点的电荷量。最后，可变电容装置连接到节点，用于向节点施加有限量的电容以延迟，从而在时间上微调从第一逆变器传播到第二逆变器的输入信号的定时边缘。

4. 发明授权

US5001417A Apparatus for measuring electrolytes utilizing optical signals related to the concentration of the electrolytes 失效
标题翻译：利用与电解质浓度相关的光信号测量电解质的装置
公开(公告)号：US5001417A
公开(公告)日：1991-03-19
申请号：US196120
申请日：1988-05-25
申请人： John G. Pumphery , Benton A. Durley, III , Paul E. Garrett , Edward G. Pumphrey , Charles L. Davis , Frederic L. Clark , Lawrence Spritzer
发明人： John G. Pumphery , Benton A. Durley, III , Paul E. Garrett , Edward G. Pumphrey , Charles L. Davis , Frederic L. Clark , Lawrence Spritzer
IPC分类号： G01N27/28 , G01D5/14 , G01N27/27 , G01N27/403 , G01N27/416 , G01N33/487
CPC分类号： G01N33/492
摘要： Apparatus for measuring electrolyute concentrations in fluid samples. The apparatus includes an ion selective electrode having a plurality of ion selective detection sites. Each site has an affinity for a preselected electrolyte of interest and generates a potential having a magnitude related to the concentration of the corresponding electrolyte in the sample. A voltage to optical transducer circuit is provided to convert the voltage differentials to optical signals having intensity related to the concentration of the electrolytes in a first embodiment, a digital code related to the concentration of the electrolytes in a second embodiment, and an optical absorption or density value related to the concentration of the electrolytes in a third embodiment. The optical signals are suitable for detection by conventional optical detector apparatus of assay instruments and may be processed using conventional two point linear interpolation techniques to determine the concentrations of the preselected electrolytes.

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