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1. 发明授权

US5825817A Radio wave measuring apparatus for digital communication system 失效
标题翻译：数字通信系统无线电波测量仪
公开(公告)号：US5825817A
公开(公告)日：1998-10-20
申请号：US504736
申请日：1995-07-19
申请人： Takanori Tanaka , Yasuhiko Shimura , Hirokazu Yanagawa
发明人： Takanori Tanaka , Yasuhiko Shimura , Hirokazu Yanagawa
IPC分类号： H04L1/20 , H04J3/00
CPC分类号： H04L1/20
摘要： In one aspect of this invention, a receiver sequentially demodulates sequentially received burst signals into original digital data signals. A data extraction unit extracts base station information from the digital data signals sequentially demodulated by the receiver. A level detector detects the signal levels of received signals containing the burst signals sequentially received by the receiver. A control unit causes a display unit to display the signal levels detected by the level detector in accordance with elapse of the reception time, and display the base station information extracted by the data extraction unit. In another aspect of this invention, a determination unit quantitatively determines errors of the burst signals from the digital data signals sequentially demodulated by the receiver, and outputs the determination results concerning the validity of the digital data contained in the burst signals. The data processing unit causes the display unit to display the measurement levels and the determination results concerning the validity of the data for designated base stations.
摘要翻译：在本发明的一个方面，接收机顺序地将顺序地接收的脉冲信号解调成原始的数字数据信号。数据提取单元从由接收机顺序解调的数字数据信号中提取基站信息。电平检测器检测包含由接收机顺序接收的突发信号的接收信号的信号电平。控制单元使显示单元根据接收时间的经过显示由电平检测器检测到的信号电平，并显示由数据提取单元提取的基站信息。在本发明的另一方面，确定单元定量地确定由接收机顺序解调的数字数据信号中的突发信号的误差，并且输出关于包含在突发信号中的数字数据的有效性的确定结果。数据处理单元使显示单元显示关于指定基站的数据的有效性的测量水平和确定结果。

2. 发明授权

US5012183A Electrooptic effect element and electrical signal waveform measuring apparatus using the same 失效
标题翻译：电光效应元件和电信号波形测量装置使用
公开(公告)号：US5012183A
公开(公告)日：1991-04-30
申请号：US391548
申请日：1989-07-10
申请人： Youzo Kawano , Tadashi Takahashi , Yasuhiko Shimura , Yukihiro Takahashi
发明人： Youzo Kawano , Tadashi Takahashi , Yasuhiko Shimura , Yukihiro Takahashi
IPC分类号： G01R13/34 , G01R15/24
CPC分类号： G01R15/242 , G01R13/347
摘要： An electrooptic effect element of this invention has first, second, and third electrodes. The first and second electrodes are formed on a substrate having an electrooptic effect, in order to form a high-frequency electric field for polarizing a light beam, thus constituting a microstrip line, as in the conventional element. The third electrode is spaced apart from the second electrode on the substrate in order to form another electric field for canceling the polarized light by the high-frequency electric field. In an electrical signal waveform measuring apparatus of this invention, an electrical signal obtained from an optical detection system coupled to the electrooptic effect element is fed back to form a closed loop in the third electrode.
摘要翻译： PCT No.PCT / JP89 / 01071 Sec。 371日期：1989年7月10日 102（e）日期1989年7月10日PCT提交1988年10月21日PCT公布。第WO88 / 12831号公报日本1989年12月28日。本发明的电光效应元件具有第一，第二和第三电极。第一和第二电极形成在具有电光效应的衬底上，以形成用于使光束偏振的高频电场，从而构成微带线，如常规元件那样。第三电极与衬底上的第二电极间隔开，以形成用于通过高频电场抵消偏振光的另一电场。在本发明的电信号波形测量装置中，从耦合到电光效应元件的光学检测系统获得的电信号被反馈以在第三电极中形成闭环。

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