公开(公告)号：US07188136B1

公开(公告)日：2007-03-06

申请号：US09550898

申请日：2000-04-17

申请人： Hirokazu Aoshima ,  Tomohiro Murata ,  Tsukasa Saitou ,  Kazuya Uemura ,  Yoshio Endou

发明人： Hirokazu Aoshima ,  Tomohiro Murata ,  Tsukasa Saitou ,  Kazuya Uemura ,  Yoshio Endou

IPC分类号： G06F15/16

CPC分类号： H04L29/06 ,  G06F21/31 ,  G06F21/62 ,  G06F2221/2119 ,  H04L69/329

摘要： In an information distributing method, an information providing resource receives from an information user unit a request statement including a code to identify first information and information (URI) to identify second information quoted in the first information. According to the identifying information of the second information included in the request statement, the information providing resource determines whether or not transmission of the second information to an information providing unit is allowed. The information providing side can control the operation in which the second information thereof is quoted to be opened in the first information.

摘要翻译： 在信息分配方法中，信息提供资源从信息用户单元接收包括识别第一信息的代码的请求语句和用于识别在第一信息中引用的第二信息的信息（URI）。 根据包含在请求语句中的第二信息的识别信息，信息提供资源确定是否允许向信息提供单元发送第二信息。 信息提供方可以控制在第一信息中引用其第二信息被打开的操作。

公开(公告)号：US06232765B1

公开(公告)日：2001-05-15

申请号：US09268136

申请日：1999-03-12

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G01R1900

CPC分类号： G01R13/347

摘要： An electro-optic sampling oscilloscope (or EOS oscilloscope) is designed to perform measurement such that an electro-optic sampling probe (i.e., EOS probe) is brought into contact with a measured circuit. Optical pulses are input to the EOS probe, wherein they are varied in polarization states in response to the measured circuit. Then, an electric signal output from the EOS probe is amplified to produce a receiving light signal. The receiving light signal is subjected to sampling operations using a first pulse signal to produce detection data, while it is also subjected to sampling operations using a second pulse signal to produce noise data. Herein, the first pulse signal consists of pulses which emerge in synchronization with the optical pulses respectively, while the second pulse signal delays from the first pulse signal by a prescribed delay time. Then, measurement data are produced by subtracting the noise data from the detection data. The measurement data are processed so that a measured waveform representing a measurement result is displayed on a screen of the EOS oscilloscope. Thus, it is possible to obtain the measured waveform with high precision and a good S/N ratio by eliminating low-frequency noise components from the measurement results.

摘要翻译： 电光采样示波器（或EOS示波器）被设计为执行测量，使得电光采样探针（即EOS探针）与被测电路接触。 光脉冲输入到EOS探头，响应于测量的电路，它们在极化状态下变化。 然后，从EOS探头输出的电信号被放大以产生接收光信号。 使用第一脉冲信号对接收光信号进行采样操作，以产生检测数据，同时还使用第二脉冲信号进行采样操作以产生噪声数据。 这里，第一脉冲信号由分别与光脉冲同步出现的脉冲组成，而第二脉冲信号从第一脉冲信号延迟规定的延迟时间。 然后，通过从检测数据中减去噪声数据来产生测量数据。 处理测量数据，使得表示测量结果的测量波形显示在EOS示波器的屏幕​​上。 因此，通过从测量结果中消除低频噪声分量，可以获得高精度和良好S / N比的测量波形。

公开(公告)号：US06683447B1

公开(公告)日：2004-01-27

申请号：US09167302

申请日：1998-10-06

申请人： Yoshiki Yanagisawa ,  Nobuaki Takeuchi ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

发明人： Yoshiki Yanagisawa ,  Nobuaki Takeuchi ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

IPC分类号： G01R1900

CPC分类号： G01R13/34

摘要： An electro-optic sampling apparatus is provided to enable measurement on potentials of signals on the conductor of coaxial cable with high precision and with ease. Herein, an electric input connector inputs a measured electric signal, which is introduced to a conductive path such as a microstrip line. An electro-optic material (e.g., Bi12SiO20) that provides electro-optic effect such as Pockel's effect is fixed to a bare portion of the conductive path and is varied in birefringence ratio in response to strength of electric field caused by the conductive path through which the measured electric signal transmits. The conductive path is then terminated by a terminal device. Now, a laser beam is radiated toward the electro-optic material, wherein it is varied in polarization in response to variations of the birefringence ratio. Then, the laser beam is reflected by a dielectric mirror and is separated into two beams by a polarization beam splitter. Photodiodes are provided to convert the two beams to electric signals representing potentials. Thus, the apparatus measures voltage of the measured electric signal based on the electric signals.

摘要翻译： 提供了一种电光采样装置，可以高精度和容易地测量同轴电缆导体上的信号电位。 这里，电输入连接器输入被测量的电信号，其被引入诸如微带线的导电路径。 提供诸如Pockel效应之类的电光效应的电光材料（例如，Bi12SiO20）被固定在导电路径的裸露部分，并且响应于由导电路径引起的电场强度而在双折射率方面发生变化 测得的电信号传输。 导电路径然后由终端设备终止。 现在，激光束朝向电光材料辐射，其中响应于双折射率的变化，它在极化方面变化。 然后，激光束被介电镜反射，并通过偏振分束器分离成两束光束。 提供光电二极管以将两个光束转换为表示电位的电信号。 因此，该装置基于电信号测量测量的电信号的电压。

公开(公告)号：US06288529B1

公开(公告)日：2001-09-11

申请号：US09323942

申请日：1999-06-02

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjou ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjou ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G01R2316

CPC分类号： G01R13/347 ,  G01R13/32

摘要： The present invention relates to an electro-optic sampling oscilloscope. This electro-optic sampling oscilloscope carries out measurement of measured signal by using an optical pulse generated based on a timing signal generated from a timing generation circuit synchronous with a trigger signal, providing: a timing generation circuit comprising a fast ramp circuit that outputs a ramp waveform using said trigger signal as a trigger, a slow ramp circuit that increases stepwise and sequentially the output value according to said timing signal; a comparator circuit that compares the output of said fast ramp circuit and the output of said slow ramp circuit and outputs the results of this comparison; and a gate circuit that limits the output of said comparator circuit by closing a gate only when the output of said comparator circuit is unstable based on the input trigger signal and timing signal.

摘要翻译： 本发明涉及一种电光采样示波器。该电光采样示波器通过使用基于由与触发信号同步的定时产生电路产生的定时信号产生的光脉冲来执行测量信号的测量，提供： 定时生成电路，包括使用所述触发信号作为触发输出斜坡波形的快速斜坡电路，根据所述定时信号逐步依次增加输出值的慢斜坡电路; 比较电路，比较所述快速斜坡电路的输出和所述慢斜波电路的输出，并输出该比较的结果; 以及门电路，其仅在所述比较器电路的输出基于输入触发信号和定时信号不稳定时闭合栅极来限制所述比较器电路的输出。

公开(公告)号：US06377036B1

公开(公告)日：2002-04-23

申请号：US09167307

申请日：1998-10-06

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

IPC分类号： G01R1324

CPC分类号： G01R13/0281

摘要： The present invention relates to an electro-optic sampling oscilloscope. The delay circuit in the electro-optic sampling oscilloscope comprises a delay time detecting circuit, a regulation time determining circuit, a counter circuit and a delay regulating circuit. The delay time detecting circuit detects in the trigger signal a value corresponding to the delay time of a reference clock from a reference clock generating circuit. The regulation time determining circuit determines a regulation time based on the value detected by the delay time detecting circuit so that the regulation time is an integer multiple of the reference clock. The counter circuit is triggered by the trigger signal to count the reference clock through a specific value. The delay regulating circuit employs a signal related to the regulation time from the regulation time determining circuit, to delay the signal output from the counter circuit by the regulation time.

摘要翻译： 本发明涉及电光采样示波器。 电光采样示波器中的延迟电路包括延迟时间检测电路，调节时间确定电路，计数器电路和延迟调节电路。 延迟时间检测电路在触发信号中检测与来自基准时钟发生电路的参考时钟的延迟时间对应的值。 调节时间确定电路基于由延迟时间检测电路检测的值来确定调节时间，使得调节时间是参考时钟的整数倍。 计数器电路由触发信号触发，通过特定值对参考时钟进行计数。 延迟调节电路采用与调节时间确定电路相关的调节时间的信号，延迟来自计数器电路的信号调节时间。

公开(公告)号：US06201235B1

公开(公告)日：2001-03-13

申请号：US09300287

申请日：1999-04-27

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G01J142

CPC分类号： G01R13/347

摘要： An electro-optic sampling oscilloscope facilitates adjustment of signal-to-noise ratio caused by electrical, optical and temperature factors. The instrument includes: a light generation section for generation a reference laser beam; a crystal, exhibiting an electro-optic response behavior so as to receive the reference laser beam and to result in changing a refractive index in accordance with electrical field strength generated by target signal; a reflection mirror formed on a rear surface of the crystal for reflecting the reference laser beam that has passed through the crystal; an optical circuit for separating the reference laser beam reflected from the reflection mirror into a first signal light and a second signal light; a first photo-electric conversion section for converting the first signal light into first electrical signals; a second photo-electric conversion section for converting the second signal light into second electrical signals; a differential amplification section for differentially amplifying the first electrical signals and the second electrical signals, and for outputting differentially amplified signals as detection signals of the target signal; and a gain adjustment section for varying gains to adjust a signal-to-noise ratio while the reference laser beam is not being radiated into the crystal, so as to match strength levels of the first electrical signals and the second electrical signals in association with feedback signals of the target signal.

摘要翻译： 电光采样示波器有助于调整由电气，光学和温度因素引起的信噪比。 仪器包括：用于产生参考激光束的发光部分; 呈现电光响应行为以便接收参考激光束并导致根据由目标信号产生的电场强度改变折射率的晶体; 反射镜，其形成在晶体的后表面上，用于反射已经通过晶体的参考激光束; 用于将从反射镜反射的参考激光束分离成第一信号光和第二信号光的光学电路; 第一光电转换部分，用于将第一信号光转换成第一电信号; 第二光电转换部分，用于将第二信号光转换成第二电信号; 差分放大部分，用于差分放大第一电信号和第二电信号，并用于输出差分放大的信号作为目标信号的检测信号; 以及增益调整部分，用于在参考激光束不被辐射到晶体中时改变增益以调节信噪比，以便与反馈相关联地匹配第一电信号和第二电信号的强度电平 目标信号的信号。

公开(公告)号：US06087838A

公开(公告)日：2000-07-11

申请号：US189044

申请日：1998-11-09

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G01R15/24 ,  G01R1/07 ,  G01R13/34 ,  G01R19/00 ,  G01R31/302 ,  H01L21/66 ,  G01R31/308

CPC分类号： G01R1/071

摘要： A signal processing circuit is provided for an electro-optic probe, which is used to perform testing of a printed-circuit board of high-speed processing. When laser beams are incident on the electro-optic probe which is brought into contact with the printed-circuit board, they are changed in polarization and are then converted to electric signals. The electric signals are amplified and are then subjected to analog-to-digital conversion to produce digital data. The laser beams (or optical pulses) are generated based on sampling pulses used for sampling of the analog-to-digital conversion. Herein, the sampling pulses are created based on a sweep signal and a step-like signal. The sweep signal increases in level with a certain slope and then decreases suddenly in one period of a trigger pulse signal. The step-like signal increases in level in a step-like manner, wherein it is increased by a predetermined level in response to each of the sampling pulses. A comparator produces a pulse signal consisting of pulses, each of which appears when the sweep signal coincides with the step-like signal in levels. Then, a mask circuit allows output of only the necessary pulses of the comparator as the sampling pulses. An image display circuit stores a plurality of digital data therein, which are then rearranged in an order so that an image representing a measurement result is displayed.

摘要翻译： 为电光探头提供信号处理电路，用于对高速处理的印刷电路板进行测试。 当激光束入射到与印刷电路板接触的电光探针上时，它们被改变为极化，然后被转换成电信号。 电信号被放大，然后进行模数转换以产生数字数据。 基于用于模数转换的采样的采样脉冲产生激光束（或光脉冲）。 这里，采样脉冲基于扫描信号和阶梯状信号产生。 扫描信号以一定的斜率增加，然后在触发脉冲信号的一个周期内突然减小。 阶梯状信号以阶梯式的方式增加，其中响应于每个采样脉冲增加预定电平。 比较器产生由脉冲组成的脉冲信号，当脉冲信号与阶梯状信号一致时，出现脉冲信号。 然后，掩模电路仅允许输出比较器的必要脉冲作为采样脉冲。 图像显示电路在其中存储多个数字数据，然后按顺序重新排列，以便显示表示测量结果的图像。

公开(公告)号：US06567760B1

公开(公告)日：2003-05-20

申请号：US09300288

申请日：1999-04-27

申请人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G06F1700

CPC分类号： G01R13/347

摘要： An electro-optic sampling oscilloscope (or EOS oscilloscope) uses an electro-optic probe containing an electro-optic crystal, which is placed under effect of an electric field caused by a measured signal. Laser pulses are supplied to the electro-optic crystal wherein they are subjected to polarization. Then, measurement data representative of a waveform of the measured signal are produced in response to polarization states of the laser pulses and are stored in a measurement data storage. A user can select specific measurement data by using a list of files of multiple measurement data which is displayed on a screen. Then, the EOS oscilloscope displays an outline waveform which is created based on a reduced number of sample points extracted from the selected measurement data. Comments and/or measurement conditions can be stored in the measurement data storage in relation to the measurement data, so that they are adequately displayed on the screen.

摘要翻译： 电光采样示波器（或EOS示波器）使用包含电光晶体的电光探头，电光晶体由测量信号引起的电场的影响。 将激光脉冲提供给电光晶体，其中它们经受极化。 然后，响应于激光脉冲的偏振状态产生表示测量信号的波形的测量数据，并存储在测量数据存储器中。 用户可以通过使用显示在屏幕上的多个测量数据的文件列表来选择特定的测量数据。 然后，EOS示波器显示基于从所选择的测量数据中提取的减少数量的采样点创建的轮廓波形。 注释和/或测量条件可以相对于测量数据存储在测量数据存储器中，使得它们被充分地显示在屏幕上。

公开(公告)号：US06384590B1

公开(公告)日：2002-05-07

申请号：US09437155

申请日：1999-11-10

申请人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G06G719

CPC分类号： G01R13/347

摘要： In a light receiving circuit for use in electro-optic sampling oscilloscope which receives first and second optical, photodiodes 51 and 52 are connected in series between a positive bias power supply 50P and a negative bias power supply 50N. The photodiodes 51 and 52 receive optical signals whose polarization state correspond to the voltage of a signal to be measured and convert the thus-received optical signals into electric signals. An amplifier 53 amplifies an electric current appearing in a point of connection P between the photodiodes 51 and 52. A current monitor 54 detects the electric signal converted by the photodiode 51, and a current monitor 57 detects the electric signal converted by the photodiode 52. The electric signal detected by the current monitor 54 is subjected to analog-to-digital conversion by an analog-to-digital converter 55, and the electric signal detected by the current monitor 57 is subjected to analog-to-digital conversion by an analog-to-digital converter 58. A control section formed from a subtraction circuit 60 controls a ratio of polarization between the optical signals such that the difference between the value of the current detected by the current monitor 54 and the value of the current detected by the current monitor 57 becomes smaller.

摘要翻译： 在接收第一和第二光学电光采样示波器的光接收电路中，光电二极管51和52串联连接在正偏压电源50P和负偏压电源50N之间。 光电二极管51和52接收光信号，其偏振状态对应于待测信号的电压，并将所接收的光信号转换为电信号。 放大器53放大出现在光电二极管51和52之间的连接点P处的电流。电流监视器54检测由光电二极管51转换的电信号，电流监视器57检测由光电二极管52转换的电信号。 由电流监视器54检测的电信号由模数转换器55进行模数转换，由电流监视器57检测的电信号经模拟数字转换 数字转换器58.由减法电路60形成的控制部分控制光信号之间的偏振比，使得由电流监视器54检测的电流值与由电流检测器检测到的电流值之差 电流监视器57变小。

公开(公告)号：US06310507B1

公开(公告)日：2001-10-30

申请号：US09167303

申请日：1998-10-06

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

IPC分类号： G06F104

CPC分类号： G01R13/347

摘要： The present invention relates to an electro-optic sampling oscilloscope which carries out measurement of a measured signal using an optical pulse generated based on a timing signal from a timing generation circuit. The timing generation circuit includes a frequency measurement circuit which generates a gate signal for a gate interval which is a specified multiple N of the cycle of the desired sampling rate, and counts the input trigger signals during the gate interval of the gate signal; a division circuit which divides the count value of said frequency measurement circuit by the specified multiple N, and determines a divider ratio; and a frequency divider which divides the trigger signals by the divider ratio determined by the division circuit, and outputs the result as the timing signal.

摘要翻译： 本发明涉及一种电光采样示波器，其使用基于来自定时发生电路的定时信号产生的光脉冲来执行测量信号的测量。 定时产生电路包括频率测量电路，其生成门间隔的门信号，该门间隔是期望采样率的周期的指定倍数N，并且在门信号的门间隔期间对输入触发信号进行计数; 分频电路，将所述频率测量电路的计数值除以指定的倍数N，并确定分频比; 以及分频器，其将触发信号除以由除法电路确定的分频比，并将该结果作为定时信号输出。