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1. 发明授权

US6131175A Automatic selection of a special mode of operation in multi-channel test equipment 失效
标题翻译：自动选择多通道测试设备的特殊操作模式
公开(公告)号：US6131175A
公开(公告)日：2000-10-10
申请号：US15738
申请日：1998-01-29
申请人： Richard A. Nygaard, Jr.
发明人： Richard A. Nygaard, Jr.
IPC分类号： G01R31/28
CPC分类号： G01R31/2834
摘要： Multi-channel measurement equipment enters or performs a special mode of operation in response to an arbitrarily chosen probe being momentarily touched to a special terminal. A signal identifiable by its uncommon properties is present at the special terminal. The uncommon signal is generated by a suitable circuit, which may be similar to a pseudo random sequence generator. Each channel is equipped with a recognition circuit that recognizes the presence of the uncommon signal. The recognition circuits each receive a copy of the uncommon ID signal, and the task of recognition is performed by pattern matching over time. To enter or perform the special mode the operator touches the probe to the special terminal. After a suitable but brief period of time the recognition circuit for that probe produces an output that indicates recognition. The measurement equipment responds by entering or performing the special mode of operation. The special mode of operation may be ended by touching again touching the probe to the special terminal, by some other manual action, such as a keystroke or mouse click, or by some other event within the context of the special mode.
摘要翻译：多通道测量设备响应于任意选择的探头瞬间触摸到特殊终端进入或执行特殊操作模式。通过其不常见特性可识别的信号存在于特殊终端。不常见的信号由合适的电路产生，该电路可以类似于伪随机序列发生器。每个通道都配备有识别不常见信号的识别电路。识别电路各自接收不常见ID信号的副本，并且通过随时间的模式匹配来执行识别任务。要进入或执行特殊模式，操作员将探头接触到特殊端子。在适当但短暂的时间段之后，该探头的识别电路产生指示识别的输出。测量设备通过输入或执行特殊操作模式进行响应。可以通过一些其他手动操作（例如按键或鼠标点击）或在特殊模式的上下文中的某些其他事件触摸再次触摸探头到特殊终端来结束特殊操作模式。

2. 发明授权

US4633410A Method and apparatus for determining if a digital value lies within a range 失效
标题翻译：用于确定数字值是否在范围内的方法和装置
公开(公告)号：US4633410A
公开(公告)日：1986-12-30
申请号：US758183
申请日：1985-07-23
申请人： Richard A. Nygaard, Jr. , Fredrick J. Palmer
发明人： Richard A. Nygaard, Jr. , Fredrick J. Palmer
IPC分类号： G06F7/02 , G06F15/00
CPC分类号： G06F7/026
摘要： An n-bit input value is partitioned into groups of most significant and least significant bits. Each group respectively describes integers J and K that comprise the input value; J and K need not each have the same radix. J and K are applied as addresses to respective Random Access Memories (RAM's). Each RAM is previously pre-loaded with information specific to the range or ranges to be detected, and each outputs respective J- and K-type information as a function of the applied J and K. The J- and K-type information is merged together and applied as an address to a third RAM whose output indicates which range, if any, the input value lies within. The output of the third RAM can be in either a bit-per-range format or a range-per-code format. The former is faster and accommodates arbitrary ranges, while the latter allows recognition of significantly more disjoint ranges at the expense of the extra time required for subsequent interpretation of the range code. Mixtures of the two types of ranges are possible using the range-per-code format.
摘要翻译： n位输入值被划分为最高有效位和最低有效位的组。每组分别表示包含输入值的整数J和K; J和K不需要每个都有相同的基数。 J和K作为地址应用于各自的随机存取存储器（RAM）。每个RAM预先预先载入要检测的范围或范围的信息，并且每个RAM作为所应用的J和K的函数输出各自的J和K型信息。合并J型和K型信息一起并作为地址应用于第三RAM，其输出指示输入值在哪个范围内（如果有的话）。第三RAM的输出可以是每范围的格式或每个码范围的格式。前者更快，适应任意范围，而后者允许以明显更多的不相交范围的识别，而代价是随后解释范围代码所需的额外时间。两种类型的范围的混合可以使用每个代码范围的格式。

3. 发明授权

US6052807A Multiple probe test equipment with channel identification 失效
标题翻译：具有通道识别功能的多探头测试设备
公开(公告)号：US6052807A
公开(公告)日：2000-04-18
申请号：US996979
申请日：1997-12-23
申请人： Richard A. Nygaard, Jr.
发明人： Richard A. Nygaard, Jr.
IPC分类号： G01R1/073 , G01R31/3177 , G01R31/319 , G01R31/28
CPC分类号： G01R1/073 , G01R31/3177 , G01R31/318385 , G01R31/31908
摘要： Multi-channel measurement equipment identifies probe-to-channel correspondence by providing an identification (ID) terminal that can be touched by a probe whose channel correspondence is sought. A ID signal identifiable by its uncommon properties is present at the ID terminal. The uncommon ID signal is generated by a suitable circuit, which may be similar to pseudo random sequence generator. Each channel is equipped with a recognition circuit that recognizes the presence of the uncommon ID signal. The recognition circuits each receive a copy of the uncommon ID signal, and the task of recognition is performed by pattern matching over time. To discover a probe's channel identity the operator touches the probe to the ID terminal. After a suitable but brief period of time the recognition circuit for that probe produces an output that indicates recognition. The measurement equipment may display a message on a screen to the effect that the system has noticed that the probe for channel "X" is on the ID terminal.
摘要翻译：多通道测量设备通过提供可以被寻找通道对应的探头触摸的识别（ID）终端来识别探测到通道对应。身份识别码终端上存在可被其不常见属性识别的ID信号。不常见的ID信号由合适的电路产生，其可以类似于伪随机序列发生器。每个通道配备有识别不常见的ID信号的识别电路。识别电路各自接收不常见ID信号的副本，并且通过随时间的模式匹配来执行识别任务。为了发现探头的通道标识，操作者将探头连接至ID终端。在适当但短暂的时间段之后，该探头的识别电路产生指示识别的输出。测量设备可能会在屏幕上显示一条消息，表示系统已经注意到通道“X”的探头位于ID终端上。

4. 发明授权

US4554632A Method and apparatus for determining if a digital value lies within a range 失效
公开(公告)号：US4554632A
公开(公告)日：1985-11-19
申请号：US392980
申请日：1982-06-28
申请人： Richard A. Nygaard, Jr. , Fredrick J. Palmer
发明人： Richard A. Nygaard, Jr. , Fredrick J. Palmer
IPC分类号： G06F7/02 , G06F9/00
CPC分类号： G06F7/026
摘要： An n-bit input value is partitioned into groups of most significant and least significant bits. Each group respectively describes integers J and K that comprise the input value; J and K need not each have the same radix. J and K are applied as addresses to respective Random Access Memories (RAM's). Each RAM is previously pre-loaded with information specific to the range or ranges to be detected, and each outputs respective J- and K-type information as a function of the applied J and K. The J- and K-type information is merged together and applied as an address to a third RAM whose output indicates which range, if any, the input value lies within. The output of the third RAM can be in either a bit-per-range format or a range-per-code format. The former is faster and accommodates arbitrary ranges, while the latter allows recognition of significantly more disjoint ranges at the expense of the extra time required for subsequent interpretation of the range code. Mixtures of the two types of ranges are possible using the range-per-code format.

5. 发明授权

US06901339B2 Eye diagram analyzer correctly samples low dv/dt voltages 失效
标题翻译：眼图分析仪正确采样低dv / dt电压
公开(公告)号：US06901339B2
公开(公告)日：2005-05-31
申请号：US10629269
申请日：2003-07-29
申请人： David D. Eskeldson , Richard A. Nygaard, Jr.
发明人： David D. Eskeldson , Richard A. Nygaard, Jr.
IPC分类号： G01R13/00 , G01R19/00 , G01R19/25 , G01R29/00 , G01R31/30 , G01R31/317 , G01R31/319 , G01R31/3193 , G06F19/00 , H04B10/08 , H04L1/20
CPC分类号： H04L1/20 , G01R31/3016 , G01R31/31725 , G01R31/31901 , G01R31/3191 , G01R31/31937
摘要： A sampling transition-detector sets two latches to different values when an input signal comparator referenced to the selected voltage transitions during a sample interval: at the beginning one latch receives one comparison value while at the end the other latch receives an opposite comparison value. A difference (XOR) in latched values indicates a transition through the selected voltage during the sample interval. An additional latch is set by a second input signal comparator whose reference voltage is offset slightly from the selected voltage, It also clocked at the start of the sample interval. If the two latches clocked at the start of the sample interval are different, as indicated by another XOR, then the input was between the reference voltage and its offset counterpart. The OR of the two XORs is the desired indication.
摘要翻译：当采样间隔期间输入信号比较器参考所选择的电压转换时，采样转换检测器将两个锁存器设置为不同的值：在开始一个锁存器接收一个比较值，而最后一个锁存器接收相反的比较值。锁存值中的差异（XOR）表示在采样间隔期间通过所选电压的转换。附加锁存器由第二输入信号比较器设置，其参考电压偏离所选择的电压，它也在采样间隔开始时计时。如果在采样间隔开始时计时的两个锁存器不同，如另一个异或所示，则输入位于参考电压与其偏移对应之间。两个异或的OR是所需的指示。

6. 发明授权

US4477920A Variable resolution counter 失效
标题翻译：可变分辨率计数器
公开(公告)号：US4477920A
公开(公告)日：1984-10-16
申请号：US352673
申请日：1982-02-26
申请人： Richard A. Nygaard, Jr.
发明人： Richard A. Nygaard, Jr.
IPC分类号： G04F10/04 , H03K21/00 , H03K21/40 , H03K23/00 , H03K23/64 , H03K23/66 , H03K21/34 , H03K21/36
CPC分类号： H03K23/66 , H03K21/00 , H03K21/40 , H03K23/005
摘要： A variable resolution counter is provided in which the resolution of the count decreases as the counted value increases. A set of scale control bits from the most significant bits of the counter are used to control selection of one of several prescaled signals from a prescaler. Resetting of the count value may be made conditional on the value of the count, and a flag may be provided to effectively redistribute the capacity of the counter between high and low resolution modes. A gray code of particular interest is also disclosed.
摘要翻译：提供了可变分辨率计数器，其中计数的分辨率随着计数值的增加而减小。来自计数器的最高有效位的一组比例控制位用于控制来自预分频器的几个预分频信号之一的选择。计数值的复位可以根据计数值作出条件，并且可以提供标志以有效地重新分配高分辨率模式和低分辨率模式之间的计数器的容量。还公开了特别感兴趣的灰色代码。

7. 发明授权

US08018989B2 System and method for adjusting a serial communications link 失效
标题翻译：用于调整串行通信链路的系统和方法
公开(公告)号：US08018989B2
公开(公告)日：2011-09-13
申请号：US11962574
申请日：2007-12-21
申请人： Richard A. Nygaard, Jr. , Robert Saponas , William C. Schulze , Hugh S. Conely Wallace
发明人： Richard A. Nygaard, Jr. , Robert Saponas , William C. Schulze , Hugh S. Conely Wallace
IPC分类号： H04B3/46
CPC分类号： H04B17/19 , H04B17/00 , H04B17/20
摘要： A system for adjusting a serial communications link includes a system under test including at least one transmitter and at least one receiver coupled together via a serial data communications link, wherein at least one of the transmitter and the receiver has at least one tunable parameter, at least one controller coupled to at least one of a transmitter and a receiver via a joint test action group JTAG interface, and logic configured to adjust the at least one tunable parameter to optimize a performance of the serial data communications link.
摘要翻译：一种用于调整串行通信链路的系统包括被测系统，包括至少一个发射机和经由串行数据通信链路耦合在一起的至少一个接收机，其中至少一个发射机和接收机具有至少一个可调谐参数，经由联合测试动作组JTAG接口耦合到发射器和接收器中的至少一个的至少一个控制器以及被配置为调整所述至少一个可调谐参数以优化串行数据通信链路的性能的逻辑。

8. 发明授权

US07870445B2 System and method for measuring and depicting performance of a serial communications link 有权
标题翻译：用于测量和描绘串行通信链路性能的系统和方法
公开(公告)号：US07870445B2
公开(公告)日：2011-01-11
申请号：US11962607
申请日：2007-12-21
申请人： Robert Saponas , Richard A. Nygaard, Jr.
发明人： Robert Saponas , Richard A. Nygaard, Jr.
IPC分类号： G06F11/08 , G06F11/24
CPC分类号： G01R31/3171
摘要： A system for measuring performance of a serial communications link includes a system under test including at least one transmitter and at least one receiver coupled together via a serial data communications link, wherein at least one of the transmitter and the receiver has at least one tunable parameter, at least one controller coupled to at least one of a transmitter and a receiver via a joint test action group JTAG interface, and logic configured to perform a bit error ratio test (BERT) at a plurality of receiver phase locations over a defined time period and concluding the BERT for a particular phase location if a BERT error count is greater than 0 at the particular phase location.
摘要翻译：用于测量串行通信链路的性能的系统包括被测系统，包括至少一个发射机和经由串行数据通信链路耦合在一起的至少一个接收机，其中发射机和接收机中的至少一个具有至少一个可调谐参数，经由联合测试动作组JTAG接口耦合到发射器和接收器中的至少一个的至少一个控制器，以及被配置为在所定义的时间段内在多个接收器相位位置执行误比特率测试（BERT）的逻辑并且如果特定相位位置上的BERT错误计数大于0，则针对特定相位位置结束BERT。

9. 发明授权

US07386406B2 Forced-alignment measurement tools for composite eye diagrams 失效
标题翻译：复合眼图的强制对准测量工具
公开(公告)号：US07386406B2
公开(公告)日：2008-06-10
申请号：US10699353
申请日：2003-10-31
申请人： Richard A. Nygaard, Jr.
发明人： Richard A. Nygaard, Jr.
IPC分类号： G06F19/00
CPC分类号： H04L1/24 , G01R13/029
摘要： An original composite eye diagram is reformulated by deliberately re-aligning its component eye diagrams according to some appropriate standard. This ‘forced-alignment’ shifts the components in one or both of the time and voltage axes. Notice is taken of the shift(s) for each channel, and that shift data is appended to the data structures for the original components. The content of the data structure can be read in its original form, or, read and force-aligned. A force-aligned composite eye diagram created from the re-aligned components can then be displayed, investigated and evaluated with any of the existing tools that used to analyze eye diagrams, simply by instructing the process that read a component eye diagram structure to reform that component as it is being read.
摘要翻译：根据一些适当的标准，通过故意重新对齐其组件眼图来重新制定原始复合眼图。这种“强制对准”会在一个或两个时间轴和电压轴上移动组件。注意每个通道的移位，并且将移位数据附加到原始组件的数据结构。数据结构的内容可以以其原始形式读取，或者读取和强制对齐。然后，可以使用用于分析眼图的任何现有工具来显示，调查和评估从重新对齐的组件创建的强制对齐复合眼图，只需指示读取组件眼图结构来改进该眼图的过程即可组件正在读取。

10. 发明授权

US06191683B1 System and method for comparing values during logic analysis 有权
标题翻译：逻辑分析期间比较值的系统和方法
公开(公告)号：US06191683B1
公开(公告)日：2001-02-20
申请号：US09386614
申请日：1999-08-31
申请人： Richard A. Nygaard, Jr.
发明人： Richard A. Nygaard, Jr.
IPC分类号： G05B100
CPC分类号： G06F7/02
摘要： Disclosed is a system and method to compare logical values. The system employs a field programmable gate array (FPGA) configured for comparing logical values. The FPGA includes a number of inputs to receive an N-bit sampled value from a target system, where N defines the number of bits in the N-bit sampled value. The FPGA also includes a number of lookup tables configured to receive an M-bit portion of the N-bit sampled value. These lookup tables generate a lookup table output in response to the M-bit portion. Finally, an AND operation is performed on the outputs of the lookup tables that generates an output indicating whether the particular N-bit logical value matches a particular desired value. Note that a single AND gate may be used or a number of AND gates may be used in place of the single AND gate. The tables within the lookup tables are generated based upon a desired logical value and a comparison mask value.
摘要翻译：公开了用于比较逻辑值的系统和方法。该系统采用配置用于比较逻辑值的现场可编程门阵列（FPGA）。 FPGA包括多个输入，用于从目标系统接收N位采样值，其中N定义N位采样值中的位数。 FPGA还包括多个查找表，其被配置为接收N位采样值的M位部分。这些查找表生成响应于M位部分的查找表输出。最后，对产生指示特定N位逻辑值是否匹配特定期望值的输出的查找表的输出执行AND运算。注意，可以使用单个AND门，或者可以使用多个AND门来代替单个AND门。查找表中的表根据所需的逻辑值和比较掩码值生成。

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