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1. 发明授权

US06768294B1 Low cost detection technique 有权
标题翻译：低成本检测技术
公开(公告)号：US06768294B1
公开(公告)日：2004-07-27
申请号：US09786873
申请日：2001-03-12
申请人： Mark Moldavsky , Boris Zhevrlev
发明人： Mark Moldavsky , Boris Zhevrlev
IPC分类号： G01R2302
CPC分类号： G01D5/248
摘要： This invention discloses circuitry for signal measurement including a signal input, a microprocessor, and an oscillator, the oscillator being operable to generate a pulse signal, the frequency of which is a function of amplitude of a first signal received at the signal input, and to supply the pulse signal to the microprocessor, and the microprocessor being operable to measure the frequency of the pulse signal by comparing the pulse signal with a timing signal, thereby providing an indication of the amplitude of the first signal.
摘要翻译：本发明公开了一种用于信号测量的电路，包括信号输入，微处理器和振荡器，该振荡器可操作以产生脉冲信号，其频率是在信号输入端接收的第一信号的振幅，将脉冲信号提供给微处理器，并且微处理器可操作以通过将脉冲信号与定时信号进行比较来测量脉冲信号的频率，从而提供第一信号幅度的指示。

2. 发明授权

US06630820B2 Method and apparatus for measuring the instantaneous frequency of FM signals 有权
公开(公告)号：US06630820B2
公开(公告)日：2003-10-07
申请号：US10263076
申请日：2002-10-03
申请人： Mi Michael Bi , Peter Kwong Ming Kiew , Chin Hon Ng
发明人： Mi Michael Bi , Peter Kwong Ming Kiew , Chin Hon Ng
IPC分类号： G01R2302
CPC分类号： H03D3/006 , G01R23/02
摘要： A method and an apparatus for measuring the instantaneous frequency of FM modulated signals, includes sampling, instantaneous frequency computing, and lowpass filtering. FM modulated signal are sampled at prescribed intervals to provide digitized FM signal. The instantaneous frequency is computed by manipulating the digitized FM signal mathematically using a new mathematical equation proposed in this invention to provide the instantaneous frequency based on digitized FM signal samples. More accurate instantaneous frequency values can be obtained by filtering the computed instantaneous frequency values using a lowpass filter.

3. 发明授权

US06518742B1 System and method for analyzing forced and unforced oscillators 失效
标题翻译：用于分析强制和非强制振荡器的系统和方法
公开(公告)号：US06518742B1
公开(公告)日：2003-02-11
申请号：US09430630
申请日：1999-10-29
申请人： Onuttom Narayan , Jaijeet S. Roychowdhury
发明人： Onuttom Narayan , Jaijeet S. Roychowdhury
IPC分类号： G01R2302
CPC分类号： G01R23/00
摘要： A system for, and method of, analyzing a forced or unforced oscillator. In one embodiment the system includes: (1) a transformation circuit that transforms a frequency-modulated waveform representing an output of the oscillator into a function based on at least two time scales and (2) a numeric analyzer, associated with the transformation circuit, that warps at least one of the at least two time scales and thereafter numerically analyzes the function to determine a frequency thereof.
摘要翻译：用于分析强制或非强制振荡器的系统和方法。在一个实施例中，系统包括：（1）变换电路，其将表示振荡器的输出的调频波形变换为基于至少两个时标的功能;以及（2）与变换电路相关联的数字分析器，使至少两个时标中的至少一个变化，然后数字地分析功能以确定其频率。

4. 发明授权

US06484124B1 System for measurement of selected performance characteristics of microwave components 失效
标题翻译：微波组件所选性能特性测量系统
公开(公告)号：US06484124B1
公开(公告)日：2002-11-19
申请号：US09576318
申请日：2000-05-22
申请人： Alexander MacMullen
发明人： Alexander MacMullen
IPC分类号： G01R2302
CPC分类号： H04B17/0085 , G01R29/26 , H04B17/309
摘要： An improved process and apparatus for measuring performance characteristics of microwave power components. The invention involves the use of a rotating phase reference technique to improve measurement. The process and apparatus result in fast, accurate, reproducible determination of the desired properties. In addition, the apparatus of the present invention is lightweight, compact, and portable.
摘要翻译：一种用于测量微波功率元件的性能特征的改进方法和装置。本发明涉及使用旋转相位参考技术来改善测量。该方法和装置导致所需性质的快速，准确，可再现的测定。此外，本发明的装置重量轻，紧凑且便于携带。

5. 发明授权

US06476615B1 Device for testing dynamic characteristics of components using serial transmissions 有权
标题翻译：使用串行传输测试组件的动态特性的设备
公开(公告)号：US06476615B1
公开(公告)日：2002-11-05
申请号：US09258476
申请日：1999-02-26
申请人： Roland Marbot , Pascal Couteaux , Reza Nezamzadeh
发明人： Roland Marbot , Pascal Couteaux , Reza Nezamzadeh
IPC分类号： G01R2302
CPC分类号： G01R31/30
摘要： A testing device for testing dynamic characteristics of an electronic circuit using serial transmissions. The circuit includes a multiplexing device and a demultiplexing device for implementing a serial link in the component or circuit. The testing device includes a transmitter for transmitting binary signals to the multiplexing device, a receiver for receiving binary signals from the demultiplexing device, and a link for selectively providing a coupling between the transmitter and the receiver. Additionally, a clock generator delivers a first clock signal to the transmitter and a second clock signal, which has a different frequency than the first clock signal, to the receiver. In one preferred embodiment, the clock generator includes a single programmable-frequency oscillator and a variable delay circuit. The programmable-frequency oscillator delivers the first clock signal and the variable delay circuit delays the first clock signal to deliver the second clock signal. The testing device can be used with circuits operating at frequencies in the range of 100 MHz. A method of testing dynamic characteristics of an electronic circuit using a testing device is also provided.
摘要翻译：一种用于测试使用串行传输的电子电路的动态特性的测试装置。该电路包括多路复用装置和用于在组件或电路中实现串行链路的解复用装置。测试装置包括用于将二进制信号发送到多路复用装置的发射机，用于从解复用装置接收二进制信号的接收机以及用于选择性地提供发射机和接收机之间的耦合的链路。此外，时钟发生器向发射机提供第一时钟信号，并向接收机提供具有与第一时钟信号不同的频率的第二时钟信号。在一个优选实施例中，时钟发生器包括单个可编程频率振荡器和可变延迟电路。可编程频率振荡器提供第一时钟信号，并且可变延迟电路延迟第一时钟信号以递送第二时钟信号。测试装置可以与在100 MHz范围内工作的电路一起使用。还提供了使用测试装置测试电子电路的动态特性的方法。

6. 发明授权

US06778575B2 AlGaInP-based high-output red semiconductor laser device 有权
标题翻译：基于AlGaInP的高输出红色半导体激光器件
公开(公告)号：US06778575B2
公开(公告)日：2004-08-17
申请号：US10100920
申请日：2002-03-20
申请人： Ryoji Hiroyama , Daijiro Inoue , Yasuhiko Nomura , Kunio Takeuchi
发明人： Ryoji Hiroyama , Daijiro Inoue , Yasuhiko Nomura , Kunio Takeuchi
IPC分类号： G01R2302
CPC分类号： B82Y20/00 , H01S5/0218 , H01S5/162 , H01S5/34326 , H01S2301/18
摘要： A semiconductor laser device having a real refractive index guided structure capable of obtaining a high kink light output and a high maximum light output also when a vertical beam divergence angle is at a small level of at least 12.5° and not more than 20.0° is provided. This semiconductor laser device comprises an n-type cladding layer of AlGaInP formed on an n-type GaAs substrate, an active layer having an AlGaInP layer formed on the n-type cladding layer, a p-type cladding layer of AlGaInP formed on the active layer and a light confinement layer formed to partially cover the p-type cladding layer, and a vertical beam divergence angle is at least 12.5° and not more than 20.0°. Thus, a higher kink light output and a higher maximum light output can be obtained as compared with a conventional semiconductor laser device having a vertical beam divergence angle exceeding 20.0°.
摘要翻译：提供具有实际折射率引导结构的半导体激光器件，当垂直光束发散角处于至少12.5°且不大于20.0°的较小水平时，也可以获得高扭结光输出和高最大光输出。该半导体激光器件包括在n型GaAs衬底上形成的AlGaInP的n型包覆层，在n型覆层上形成有AlGaInP层的有源层，形成在活性层上的AlGaInP的p型包覆层层和形成为部分地覆盖p型包层的光限制层，垂直光束发散角为至少12.5°且不大于20.0°。因此，与具有超过20.0°的垂直光束发散角的常规半导体激光器件相比，可以获得更高的扭结光输出和更高的最大光输出。

7. 发明授权

US06774614B2 Method and apparatus for detecting current 有权
标题翻译：检测电流的方法和装置
公开(公告)号：US06774614B2
公开(公告)日：2004-08-10
申请号：US10083841
申请日：2002-02-27
申请人： William Herbert Sahm, III , Stanley A. Miske, Jr. , Daniel Herbert Baker , Bruce Edward English , John Michael Kern
发明人： William Herbert Sahm, III , Stanley A. Miske, Jr. , Daniel Herbert Baker , Bruce Edward English , John Michael Kern
IPC分类号： G01R2302
CPC分类号： G01R29/18
摘要： An apparatus for detecting currents in a three-phase power transmission system includes a first detection circuit electrically coupled to a first phase of the three-phase transmission system, a second detection circuit electrically coupled to a second phase of the three-phase transmission system different than the first phase, and an event output switch electrically coupled to the first detection circuit and the second detection circuit and configured to actuate when a subsynchronous current at least one of the first phase and the second phase exceeds a pre-selected subsynchronous current setpoint.
摘要翻译：用于检测三相电力传输系统中的电流的装置包括电耦合到三相传输系统的第一相的第一检测电路，电耦合到三相传输系统的第二相的第二检测电路不同以及事件输出开关，其电耦合到第一检测电路和第二检测电路，并且被配置为当第一相和第二相中的至少一个的次同步电流超过预先选择的次同步电流设定点时致动。

8. 发明授权

US06603299B1 Frequency locked loop speed up 失效
标题翻译：频率锁定环加速
公开(公告)号：US06603299B1
公开(公告)日：2003-08-05
申请号：US10165018
申请日：2002-06-07
申请人： Brewster T. Hudson , Anthony Eugene Zortea
发明人： Brewster T. Hudson , Anthony Eugene Zortea
IPC分类号： G01R2302
CPC分类号： H03L7/087 , H03L7/10 , H03L7/14 , H04L7/0004 , H04L7/033
摘要： A method in a communication circuit recovers a clock signal. A voltage controlled oscillator is initialized by supplying a predetermined.number of pulses to a charge pump coupled to the voltage controlled oscillator so as to initialize the voltage controlled oscillator to near an operating frequency upon power up of . the clock recovery circuit.
摘要翻译：通信电路中的方法恢复时钟信号。通过向耦合到压控振荡器的电荷泵提供预定数量的脉冲来初始化压控振荡器，以便在加电时将压控振荡器初始化为接近工作频率。时钟恢复电路。

9. 发明授权

US06504354B1 Signal analysis apparatus having YTO yttrium-iron garnet tuned oscillator 失效
标题翻译：具有YTO钇铁石榴石调谐振荡器的信号分析仪
公开(公告)号：US06504354B1
公开(公告)日：2003-01-07
申请号：US09868496
申请日：2001-06-18
申请人： Yuichi Waida
发明人： Yuichi Waida
IPC分类号： G01R2302
CPC分类号： H03B23/00 , G01R23/173 , H03B5/1882
摘要： A sweep controller supplies a current to a YTO(YIG-Yttrium-Iron-Garnet Tuned Oscillator) from a current drive circuit in such a manner that frequencies corresponding to a first range in an oscillation frequency of the YTO designated as a desired frequency range for analysis with one sweep, and a second range designated as a frequency range higher than the first range for the analysis with the next one sweep are oscillated by the YTO. Moreover, the sweep controller outputs an instruction for increasing the current flowing through the YTO from the current drive circuit over a part of a period between an end of the first range and a start of the second range in order to shorten the period between the end of the first range and the start of the second range when it is detected that a difference between an end frequency of the first range and a start frequency of the second range is larger than a predetermined frequency difference.
摘要翻译：扫频控制器将来自当前驱动电路的电流提供给YTO（YIG-钇铁铁石榴石调谐振荡器），使得与YTO的振荡频率中的第一范围相对应的频率被指定为期望的频率范围，通过一次扫描进行分析，并且指定为高于用于下一次扫描的分析的第一范围的频率范围的第二范围由YTO振荡。此外，扫描控制器输出用于在第一范围的结束和第二范围的开始之间的时间段的一部分周期从当前驱动电路输出用于增加流过YTO的电流的指令，以便缩短端部当检测到第一范围的结束频率与第二范围的起始频率之间的差异大于预定频率差时，第一范围的开始和第二范围的开始。

10. 发明授权

US06246223B1 Method for use on a parametric tester to measure the output frequency of a ring oscillator through voltage sampling 失效
标题翻译：用于参数测试仪的方法，通过电压采样来测量环形振荡器的输出频率
公开(公告)号：US06246223B1
公开(公告)日：2001-06-12
申请号：US08984886
申请日：1997-12-04
申请人： Shi-Tron Lin
发明人： Shi-Tron Lin
IPC分类号： G01R2302
CPC分类号： G01R23/10 , G01R31/2824
摘要： A method is provided for use on a parametric tester that allows the parametric tester to more effectively and precisely measure the output frequency of a periodic pulse signal generating means. The first step is to down convert the output frequency of the periodic pulse signal generating means to about 1 Hz. Then, the frequency-downconverted pulse train is sampled to thereby obtain a series of sampled signals In accordance with the magnitudes of the sampled signals, the sampled signals are registered to be at either a high-level state, an low-level state, or a intermediate-level state. Then, the integration time and the delay time involved in the sampling process are registered. The sampling process is continued until at least two sampled signals at the low-level state are registered. Based on these parameters, a delta transition time for the first intermediate-level state and a second delta transition time for the second intermediate-level state can be obtained. Further, the length of the period from the occurrence of the first intermediate-level state to the occurrence of the second intermediate-level state is computed based on the number of the occurrences of pulse transitions during this period. Based on the foregoing parameters, the frequency of the frequency-downconverted pulse train can be obtained, which then allows the output frequency of the periodic pulse signal generating means to be obtained.
摘要翻译：提供了一种在参数测试仪上使用的方法，其允许参数测试器更有效和精确地测量周期性脉冲信号产生装置的输出频率。第一步是将周期性脉冲信号发生装置的输出频率降低到约1Hz。然后，对降频转换脉冲串进行采样，从而获得一系列采样信号。根据采样信号的幅度，采样信号被登记为处于高电平状态，低电平状态或中级国家。然后，记录采样过程所涉及的积分时间和延迟时间。采样过程持续到低电平状态的至少两个采样信号被注册。基于这些参数，可以获得第一中间级状态的增量转换时间和第二中间级状态的第二增量转换时间。另外，从该第一中间状态的发生到第二中间电平状态的发生的期间的长度是根据该期间的脉冲转移的次数计算的。基于上述参数，可以获得频率下变频脉冲序列的频率，从而可以获得周期性脉冲信号发生装置的输出频率。

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