公开(公告)号：US20030097227A1

公开(公告)日：2003-05-22

申请号：US10108841

申请日：2002-03-27

发明人： Karen Marie Bloch ,  Gonzalo Ramiro Arce

IPC分类号： G01R023/00

CPC分类号： G06F19/24 ,  G06F19/18

摘要： A method of classifying biological elements into functional families includes the steps of representing a characteristic numerically, performing a time-frequency transform on the numeric representation, and identifying biological elements of a common functional family by clusters of data having a common frequency characteristic in the time-frequency domain. Biologically active regions on those biological elements are identified by an amplitude analysis of the clusters.

摘要翻译： 将生物元素分类为功能家族的方法包括以下步骤：数字表示特征，对数字表示进行时间 - 频率变换，以及通过在时间上具有共同频率特性的数据簇识别公共功能族的生物元素 频域 这些生物元素上的生物活性区域通过簇的幅度分析来鉴定。

公开(公告)号：US20030080724A1

公开(公告)日：2003-05-01

申请号：US10021600

申请日：2001-10-30

发明人： Wing Jong Mar

IPC分类号： G01R023/12 ,  G01R023/00

CPC分类号： G01R23/20 ,  G01R29/26

摘要： A phase noise measurement module (PNMM), system and method for measuring phase noise improve accuracy of phase noise measurements of a signal under test (SUT) using a spectrum analyzer. The PNMM comprises an RF to IF frequency converter and a selectable frequency divider. The system comprises the PNMM connected to the spectrum analyzer and employs an LO signal from a tunable LO in the spectrum analyzer. The method comprises directly converting an input SUT to an IF signal having either a second or a third IF frequency that is applied to a corresponding frequency conversion stage of the spectrum analyzer before the phase noise is measured. The present invention bypasses a first conversion stage, and typically a second conversion stage as well, of the spectrum analyzer and directly converts the SUT to either the second or third IF frequency, thereby reducing phase noise added to the SUT.

摘要翻译： 相位噪声测量模块（PNMM），用于测量相位噪声的系统和方法提高了使用频谱分析仪的被测信号（SUT）的相位噪声测量精度。 PNMM包括RF至IF频率转换器和可选择的分频器。 该系统包括连接到频谱分析仪的PNMM，并在频谱分析仪中采用来自可调谐LO的LO信号。 该方法包括在测量相位噪声之前将输入SUT直接转换为具有施加到频谱分析仪的相应频率转换级的第二或第三IF频率的IF信号。 本发明绕过频谱分析仪的第一转换级，通常是第二转换级，并将SUT直接转换为第二或第三IF频率，从而减少加到SUT上的相位噪声。

公开(公告)号：US20030057935A1

公开(公告)日：2003-03-27

申请号：US10056865

申请日：2002-01-25

申请人： FUJITSU LIMITED

发明人： Susumu Yoshida ,  Shuichi Hashimoto ,  Ryuki Kubohara ,  Tatsuhiko Kosugi ,  Takeyori Hara ,  Yoshiyuki Kagami

IPC分类号： G01R023/00 ,  G01R023/08

CPC分类号： G11B21/10

摘要： A resonance-frequency measuring method is used for measuring a resonance frequency of an information recording/reproducing device reproducing information recorded on a medium by driving a mechanism unit. The resonance-frequency measuring method comprises the measuring step of applying sine-wave oscillations at different frequencies one by one to the mechanism unit, and counting the number of times information reproduced upon application of each of the sine-wave oscillations differs from information indicating an aimed location, and the resonance-frequency determining step of determining the resonance frequency according to the number of times counted in the measuring step.

摘要翻译： 谐振频率测量方法用于通过驱动机构单元来测量记录在介质上的信息记录/再现装置再现信息的共振频率。 谐振频率测量方法包括测量步骤，将不同频率的正弦波振荡逐个地施加到机构单元，并且计数在应用每个正弦波振荡时再现的信息的数量不同于指示 以及谐振频率确定步骤，用于根据在测量步骤中计数的次数来确定谐振频率。

公开(公告)号：US20020196010A1

公开(公告)日：2002-12-26

申请号：US09886766

申请日：2001-06-21

申请人： Xerox Corporation

发明人： Jerry F. Adams

IPC分类号： G01R023/00 ,  G01R023/12

CPC分类号： G01R19/0092

摘要： A xerographic charging device corona current is determined by forming a first signal across a sense resistor in series with the charging device power supply, forming a second signal using a resistive voltage divider network across the power supply, and forming a third signal using a resistor-capacitor charging circuit across the power supply, and then processing the first, second and third signals to form an output signal that is based on the corona current.

摘要翻译： 静电复印充电装置电晕电流通过与充电装置电源串联形成检测电阻器上的第一信号，使用跨电源的电阻分压器网络形成第二信号，并且使用电阻 - 电容器充电电路跨越电源，然后处理第一，第二和第三信号以形成基于电晕电流的输出信号。

公开(公告)号：US20020196009A1

公开(公告)日：2002-12-26

申请号：US10200634

申请日：2002-07-22

发明人： Dieter Sewald

IPC分类号： G01R023/00 ,  G01R023/08

CPC分类号： G01N27/3276

摘要： A measuring method and a sensor device measure chemicals in pharmaceutical analysis and synthesis. According to the method, the course of a reaction is detected by a change of frequency of a high frequency oscillator. The sensor device includes a measuring cell in which the reaction takes place, said measuring cell forming part of a resonator of an HF-oscillator.

摘要翻译： 测量方法和传感器设备测量药物分析和合成中的化学物质。 根据该方法，通过高频振荡器的频率变化来检测反应过程。 传感器装置包括其中发生反应的测量单元，所述测量单元形成HF振荡器的谐振器的一部分。

公开(公告)号：US20020187761A1

公开(公告)日：2002-12-12

申请号：US10081645

申请日：2002-02-21

申请人： Solid Technologies, Inc.

发明人： Sungbin Im ,  Chonghoon Kim ,  Yoan Shin

IPC分类号： G01R019/00 ,  G01R021/00 ,  G01R023/00 ,  H04B001/04 ,  H01Q011/12

CPC分类号： H04B1/0475 ,  H03F1/3247

摘要： A device for compensating for the nonlinearity of a power amplifier which has a simple configuration and can precisely linearize the transfer characteristics of the power amplifier by predistorting an input signal of the power amplifier. The nonlinearity compensation device of the present invention converts an RF input signal into an IF band rather than a baseband and predistorts the RF input signal in digital domain, and thus any modulation or demodulation process is obviated and the simultaneous processing of signals in multiple channels is facilitated. A first downconverter receives the RF input signal and converts the frequency band of the signal into the IF band to output an IF input signal. A predistortion unit receives and predistorts the IF input signal to compensate for the nonlinearity, and outputs an IF predistorted signal. An upconverter converts the frequency band of the IF predistorted signal into the RF band to provide such a signal to the amplifier.

摘要翻译： 用于补偿具有简单配置的功率放大器的非线性的装置，并且可以通过预失真功率放大器的输入信号来精确地线性化功率放大器的传输特性。 本发明的非线性补偿装置将RF输入信号转换为IF频带而不是基带，并且在数字域中对RF输入信号进行预失真，从而消除任何调制或解调处理，并且多个信道中的信号的同时处理是 方便了 第一下变频器接收RF输入信号并将信号的频带转换成IF频带以输出IF输入信号。 预失真单元接收并预失真IF输入信号以补偿非线性，并输出IF预失真信号。 上变频器将IF预失真信号的频带转换成RF频带，以向放大器提供这样的信号。

公开(公告)号：US20020135351A1

公开(公告)日：2002-09-26

申请号：US10062563

申请日：2002-02-05

发明人： Kurt Schmidt

IPC分类号： G01R023/00

CPC分类号： H03H17/02 ,  G01R23/173

摘要： A spectrum analyzer comprises a mixer, which mixes complex conjugate input signal v*(t) into a base band signal x(t) and a resolution filter, which filters the base band signal for narrow band. In accordance with two aspects of the invention, the resolution filter has either a complex pulse response hused(t)nullC1nullenullCnull2nullt2nullenulljnullC3t2 or a real pulse response hused(t)nullC4nullenullC5nullt2, in which C1, C2, C3, C4 and C5 are constants.

摘要翻译： 频谱分析仪包括混合器，其将复共轭输入信号v *（t）混合到基带信号x（t）和分辨率滤波器中，其对窄带的基带信号进行滤波。 根据本发明的两个方面，分辨率滤波器具有复杂脉冲响应（t）= C1.eC.2.t2.ej.C3t2或实际脉冲响应hused（t）= C4.e-C5。 t2，其中C1，C2，C3，C4和C5是常数。

公开(公告)号：US20040155642A1

公开(公告)日：2004-08-12

申请号：US10624750

申请日：2003-07-22

发明人： Chen-Hua Hsi ,  Cheng-Yuan Wu ,  Chih-Hsien Weng

IPC分类号： G01R023/00

CPC分类号： G01R23/005

摘要： A device for verifying frequency of a clock signal generated from a clock signal generator includes a reference signal generator, a frequency divider and a comparative detector. A reference clock signal and a reset signal are provided by the reference signal generator. The frequency divider in communication with the reference signal generator and the clock signal generator receives and frequency-divides the clock signal into a bi-level divided clock signal in response to the reset signal. Then the comparative detector in communication with the frequency divider and the reference signal generator detects a level of the bi-level divided clock signal in response to the reset signal and the reference clock signal, and verifies frequency of the clock signal according to a period deviation range Te when the bi-level divided clock signal is detected to be a first level from the first to the (pnullq)th detected points but a second level at the (pnull1)th detected point.

摘要翻译： 用于验证从时钟信号发生器产生的时钟信号的频率的装置包括参考信号发生器，分频器和比较检测器。 参考信号发生器提供参考时钟信号和复位信号。 与参考信号发生器和时钟信号发生器通信的分频器接收并响应于复位信号将时钟信号分频为双电平分频时钟信号。 然后与分频器和参考信号发生器通信的比较检测器响应于复位信号和参考时钟信号检测双电平分频时钟信号的电平，并根据周期偏差验证时钟信号的频率 当检测到双电平分频时钟信号为从第一检测点到第（pq）检测点的第一电平，而在第（p + 1）检测点处检测到第二电平时，测量范围Te。

公开(公告)号：US20040012382A1

公开(公告)日：2004-01-22

申请号：US10196913

申请日：2002-07-17

发明人： Michael R. Fender ,  Gerald R. Kinsley ,  Helen K. Muterspaugh

IPC分类号： G01R023/00 ,  G01R013/20

CPC分类号： G01R13/20

摘要： A system and method for application control in measurement devices is disclosed. The method includes installing a new application using the device's graphical user interface, extending the device's menu system for the new application, launching the new application using the device's extended menu system, and controlling the device using the new application through a remote control mechanism of the device. A system of application control in a measurement device is also disclosed.

摘要翻译： 公开了一种用于测量装置中的应用控制的系统和方法。 该方法包括使用设备的图形用户界面安装新应用，扩展设备的新应用的菜单系统，使用设备的扩展菜单系统启动新应用，并通过远程控制机制来控制使用新应用的设备 设备。 还公开了一种测量装置中的应用控制系统。

公开(公告)号：US20040008020A1

公开(公告)日：2004-01-15

申请号：US10419880

申请日：2003-04-22

发明人： Mark Sullivan ,  Darryl S. Bierly

IPC分类号： G01R023/00

CPC分类号： G01R23/165 ,  G01R23/14

摘要： A range of a frequency measuring device having limited range is extended by pre-processing an input signal. The input signal is divided into a plurality of channels. In each channel, the input signal is divided into sub-bands. A frequency of the input signal is determined using a frequency measuring device having limited range. The frequencies are stored in a frequency set. The frequency set is used to determine a frequency associated with the input signal according a set of pre-determined reconstruction rules.

摘要翻译： 具有有限范围的频率测量装置的范围通过预处理输入信号来延长。 输入信号被分成多个通道。 在每个通道中，输入信号被分成子带。 使用具有有限范围的频率测量装置来确定输入信号的频率。 频率存储在频率集中。 频率集用于根据一组预先确定的重建规则来确定与输入信号相关联的频率。