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1. 发明授权

US5847559A Spectrum Analyzer 失效
标题翻译：频谱分析仪
公开(公告)号：US5847559A
公开(公告)日：1998-12-08
申请号：US704622
申请日：1996-12-23
申请人： Hiroaki Takaoku , Takayoshi Fukui
发明人： Hiroaki Takaoku , Takayoshi Fukui
IPC分类号： G01R23/173 , H03L7/18 , G01R27/26
CPC分类号： H03L7/1806 , G01R23/173
摘要： An improved local oscillator for use in a digital step sweep is capable of minimizing dynamic spurious which is an inverse of the unit step time T.sub.step. The local oscillator includes a random clock delay 12 which provides a random clock 12.sub.rndclk to the DDS 40 to modify a time length of the unit step time T.sub.step for sweeping the local oscillator to be random.
摘要翻译： PCT No.PCT / JP96 / 00115 Sec。 371日期：1996年12月23日 102（e）日期1996年12月23日PCT提交1996年1月23日PCT公布。公开号WO96 / 23231 日期1996年8月1日用于数字步进扫描的改进的本地振荡器能够最小化动态寄生，这是单位步进时间Tstep的倒数。本地振荡器包括随机时钟延迟12，其向DDS 40提供随机时钟12rndclk，以修改用于将本地振荡器扫描为随机的单位步进时间Tstep的时间长度。

2. 发明授权

US06233288B1 Spectrum analyzer 失效
标题翻译：频谱分析仪
公开(公告)号：US06233288B1
公开(公告)日：2001-05-15
申请号：US09070094
申请日：1998-04-03
申请人： Hiroaki Takaoku , Takayoshi Fukui
发明人： Hiroaki Takaoku , Takayoshi Fukui
IPC分类号： H04L2706
CPC分类号： G01R23/173
摘要： A spectrum analyzer having an improved local oscillator for use in a digital step sweep is capable of minimizing a dynamic spurious response which is inverse proportional to a unit step time in the step sweep. The local oscillator includes a random clock delay which provides a random clock to a direct digital synthesizer to incorporate random timings in a time length of the unit step time for sweeping the local oscillator. In another aspect, the local oscillator includes a sweep step number control which maximizes the number of steps in the step sweep to ultimately decrease the dynamic spurious response.
摘要翻译：具有用于数字步进扫描的改进的本地振荡器的频谱分析仪能够使与步进扫描中的单位步进时间成反比的动态杂散响应最小化。本地振荡器包括随机时钟延迟，其向直接数字合成器提供随机时钟，以在用于扫描本地振荡器的单位步进时间的时间长度内并入随机定时。在另一方面，本地振荡器包括扫频步数控制，其最大化阶梯扫描中的步数，以最终降低动态杂散响应。

3. 发明授权

US06229316B1 Measuring method by spectrum analyzer 失效
标题翻译：频谱分析仪测量方法
公开(公告)号：US06229316B1
公开(公告)日：2001-05-08
申请号：US08707032
申请日：1996-09-03
申请人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
发明人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
IPC分类号： G01R2316
CPC分类号： G01R23/16 , G01R29/26
摘要： A spectrum analyzer in which automatic setting of parameters such as band width is done by the analyzer without manual operator input and noise measurements are determined and displayed to the operator. This is accomplished by an input signal being supplied to a frequency mixer via an input variable attenuator. The frequency of the input signal is mixed with the frequency of a local signal from a frequency sweep generator. The mixed signal is then supplied to a band pass filter and the output of the filter is amplified by an amplifier. The frequency of the amplified output is mixed with the frequency of a local signal from a local oscillator by a frequency mixer. The intermediate frequency signal is taken out by a band pass filter and the output is detected by a detector. The detected output is converted into a digital signal by an A/D converter after passing through a low pass filter and the digital signal is stored in a buffer memory. A CPU sets an attenuation amount. The CPU also controls a frequency sweep generator by controlling a ramp voltage generator through a timing controller. The CPU sets a sweep frequency band, a band width RBW, a band width VBW, and a sampling period, as well as a display control of the data stored in the buffer memory on a display unit.
摘要翻译：频谱分析仪，其中通过分析仪完成诸如带宽等参数的自动设置，无需手动操作员输入和噪声测量，并将其显示给操作者。这通过经由输入可变衰减器被提供给混频器的输入信号来实现。输入信号的频率与来自频率扫描发生器的本地信号的频率混合。然后将混合信号提供给带通滤波器，并且滤波器的输出由放大器放大。放大输出的频率通过混频器与来自本地振荡器的本地信号的频率混合。中频信号由带通滤波器取出，输出由检测器检测。在通过低通滤波器之后，A / D转换器将检测到的输出转换成数字信号，数字信号存储在缓冲存储器中。 CPU设置衰减量。 CPU还通过定时控制器控制斜坡电压发生器来控制频率扫描发生器。 CPU设置扫描频带，带宽RBW，带宽VBW和采样周期，以及在显示单元上存储在缓冲存储器中的数据的显示控制。

4. 发明授权

US06191571B1 Measuring method by spectrum analyzer 失效
标题翻译：频谱分析仪测量方法
公开(公告)号：US06191571B1
公开(公告)日：2001-02-20
申请号：US09248110
申请日：1999-02-11
申请人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
发明人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
IPC分类号： G01R1320
CPC分类号： G01R23/16 , G01R29/26
摘要： A measuring device and method use a spectrum analyzer. The spectrum analyzer comprises a display screen controlled by a processor on which a spectrum of an input signal is displayed in a frequency region on a half portion of the display screen and a noise level at a frequency associated with the input signal is displayed in a time region on another half portion of the display screen.
摘要翻译：测量装置和方法使用频谱分析仪。频谱分析仪包括由处理器控制的显示屏幕，在该处理器上，在显示屏幕的一半部分上的频率区域中显示输入信号的频谱，并且在一段时间内显示与输入信号相关联的频率处的噪声电平区域在显示屏幕的另一半部分上。

5. 发明申请

US20090060528A1 OPTICAL TRANSMITTER 有权
标题翻译：光学发射器
公开(公告)号：US20090060528A1
公开(公告)日：2009-03-05
申请号：US12108089
申请日：2008-04-23
申请人： Shigehiro TAKASHIMA , Takayoshi Fukui , Yoshikuni Uchida , Kazuyoshi Yamaki , Youichi Honzawa
发明人： Shigehiro TAKASHIMA , Takayoshi Fukui , Yoshikuni Uchida , Kazuyoshi Yamaki , Youichi Honzawa
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , G02F1/0123 , G02F1/0327 , G02F1/225 , G02F2001/212 , G02F2202/20 , H04B10/50572 , H04B10/5167
摘要： A technology to automatically control the biasing of an optical duobinary transmitter using a single-drive LN-MZ modulator is provided. A low-frequency signal is amplitude modulated onto a voltage signal input into a Mach-Zehnder optical modulator 22. The optical output from the optical modulator 22 is detected by an optical detection subsystem 30. In a bias control subsystem 40, the low-frequency signal component amplitude modulated onto the electrical signal is detected from the optical output, and a DC bias voltage applied to the optical modulator is controlled such that the low-frequency signal component is either minimized or maximized.
摘要翻译：提供了一种使用单驱动LN-MZ调制器自动控制光双向发射器的偏置的技术。低频信号被调制到输入到马赫 - 策德尔光调制器22的电压信号上。光调制器22的光输出由光检测子系统30检测。在偏置控制子系统40中，低频信号从光输出检测调制到电信号上的信号分量幅度，并且控制施加到光调制器的DC偏置电压，使得低频信号分量被最小化或最大化。

6. 发明授权

US6052715A Interactive communication system for downloading large amount data 失效
标题翻译：用于下载大量数据的交互式通信系统
公开(公告)号：US6052715A
公开(公告)日：2000-04-18
申请号：US855455
申请日：1997-05-13
申请人： Takayoshi Fukui , Masayasu Miyake
发明人： Takayoshi Fukui , Masayasu Miyake
IPC分类号： H04N7/08 , G06F13/00 , H04H20/28 , H04H20/38 , H04H20/76 , H04H20/93 , H04H60/12 , H04H60/40 , H04L9/08 , H04L12/28 , H04L12/46 , H04L12/66 , H04M11/08 , H04N7/081 , H04N7/14 , H04N7/167 , H04N21/414 , H04N21/61 , H04W4/06 , H04W84/12 , H04W88/06 , H04H1/00 , H04N7/173
CPC分类号： H04H60/06 , H04H20/28 , H04H20/38 , H04H20/76 , H04H20/93 , H04H60/12 , H04H60/40 , H04H60/90 , H04N21/235 , H04N21/2351 , H04N21/4782 , H04N21/6112 , H04N21/6181 , H04N7/17318
摘要： An information terminal transmits small amount data such as a command to a Web server on the internet to an asymmetric router via an interactive radio network. The asymmetric router transmits the command to the Web server via the internet. The asymmetric router transmits large amount data (for example, HTML formatted browser data) from the Web server to a data superimposing broadcast apparatus. The data superimposing broadcast apparatus determines a scheduled time of broadcasting according to a data amount. The scheduled time is transmitted to the information terminal via the asymmetric router and the interactive radio network. When the scheduled time comes, the large amount data is superimposed on an empty portion of a television signal, and is broadcasted. The information terminal carries out a predetermined processing operation whereby a broadcast receiving circuit is turned on, and the television signal on which the large amount data has been superimposed is received. The received data then can be displayed in a display device and the like. Therefore, even in a portable information terminal, it is possible to provide an interactive communication system which can transmit large amount data at a high speed.
摘要翻译：信息终端经由交互式无线网络将诸如命令的少量数据发送到互联网上的Web服务器到非对称路由器。非对称路由器通过互联网将命令发送到Web服务器。非对称路由器将大量数据（例如，HTML格式的浏览器数据）从Web服务器传送到数据叠加广播装置。数据叠加广播装置根据数据量确定广播的调度时间。预定的时间经由非对称路由器和交互式无线电网络发送到信息终端。当预定时间到来时，大量数据叠加在电视信号的空白部分，并被广播。信息终端执行预定的处理操作，由此广播接收电路被接通，并且接收到其上叠加了大量数据的电视信号。所接收的数据然后可以显示在显示装置等中。因此，即使在便携式信息终端中，也可以提供能够高速传送大量数据的交互式通信系统。

7. 发明申请

US20050286578A1 Optical transmitter and method for transmitting optical signal 审中-公开
标题翻译：光发射机和发送光信号的方法
公开(公告)号：US20050286578A1
公开(公告)日：2005-12-29
申请号：US11152208
申请日：2005-06-15
申请人： Yoshikuni Uchida , Takayoshi Fukui , Keiichi Murakami , Kazutaka Nagoya , Raju Kankipati
发明人： Yoshikuni Uchida , Takayoshi Fukui , Keiichi Murakami , Kazutaka Nagoya , Raju Kankipati
IPC分类号： H01S3/042 , H01S5/024 , H01S5/068 , H01S5/0683 , H01S5/0687 , H01S3/04
CPC分类号： H04B10/572 , H01S5/02415 , H01S5/0683 , H01S5/0687 , H04B10/503
摘要： There are provided an optical transmitter and a method for transmitting an optical signal, which realizes an optimum desired temperature arrival time without changing a Peltier element size, a drive current and a drive voltage, and which is stabilized by control having a sufficient phase margin. Different loop filters for heating and cooling are provided for a control loop of the Peltier element on which a laser diode is mounted, and the respective appropriate loop filters are selected and used on the basis of heating or cooling information.
摘要翻译：提供了一种光发送器和用于发送光信号的方法，其实现了最佳期望温度到达时间，而不改变珀耳帖元件尺寸，驱动电流和驱动电压，并且通过具有足够的相位裕度的控制来稳定。提供用于加热和冷却的不同的环路滤波器用于安装激光二极管的珀尔帖元件的控制回路，并且基于加热或冷却信息选择和使用相应的适当的环路滤波器。

8. 发明授权

US08098998B2 Optical transmitter 有权
标题翻译：光发射机
公开(公告)号：US08098998B2
公开(公告)日：2012-01-17
申请号：US12108089
申请日：2008-04-23
申请人： Shigehiro Takashima , Takayoshi Fukui , Yoshikuni Uchida , Kazuyoshi Yamaki , Youichi Honzawa
发明人： Shigehiro Takashima , Takayoshi Fukui , Yoshikuni Uchida , Kazuyoshi Yamaki , Youichi Honzawa
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , G02F1/0123 , G02F1/0327 , G02F1/225 , G02F2001/212 , G02F2202/20 , H04B10/50572 , H04B10/5167
摘要： A technology to automatically control the biasing of an optical duobinary transmitter using a single-drive LN-MZ modulator is provided. A low-frequency signal is amplitude modulated onto a voltage signal input into a Mach-Zehnder optical modulator 22. The optical output from the optical modulator 22 is detected by an optical detection subsystem 30. In a bias control subsystem 40, the low-frequency signal component amplitude modulated onto the electrical signal is detected from the optical output, and a DC bias voltage applied to the optical modulator is controlled such that the low-frequency signal component is either minimized or maximized.
摘要翻译：提供了一种使用单驱动LN-MZ调制器自动控制光双向发射器的偏置的技术。低频信号被调制到输入到马赫 - 策德尔光调制器22的电压信号上。光调制器22的光输出由光检测子系统30检测。在偏置控制子系统40中，低频信号从光输出检测调制到电信号上的信号分量幅度，并且控制施加到光调制器的DC偏置电压，使得低频信号分量被最小化或最大化。

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