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1. 发明授权

US4562437A Digital loop filter 失效
标题翻译：数字环路滤波器
公开(公告)号：US4562437A
公开(公告)日：1985-12-31
申请号：US453112
申请日：1982-12-27
申请人： Shunroku Sasaki , Kazuo Tsukada , Yoshiharu Kanzaki , Yoshikazu Hori
发明人： Shunroku Sasaki , Kazuo Tsukada , Yoshiharu Kanzaki , Yoshikazu Hori
IPC分类号： G01S5/10 , H03H17/04 , G01S1/30
CPC分类号： G01S5/10 , H03H17/04
摘要： A digital loop filter is used in a phase-tracking circuit which is adaptable to a phase-comparison radio navigation system such as the DECCA (registered trademark) system. The digital loop filter includes a feedback circuit which receives a digital input signal from the digital loop filter and outputs a digital output signal and which feeds back and adds the digital output signal to the digital input signal after a predetermined delay. It also includes a feed-forward circuit which multiplies the digital input signal by a predetermined constant (B) and adds the resultant signal to the digital output signal of the feedback circuit to generate a digital output signal. A multiplier for multiplying the digital output signal of the feed-forward circuit by a second predetermined constant (C) to generate a digital output signal of the digital loop filter is also provided.
摘要翻译：数字环路滤波器用于适用于DECCA（注册商标）系统等相位比较无线电导航系统的相位跟踪电路。数字环路滤波器包括反馈电路，其从数字环路滤波器接收数字输入信号并输出数字输出信号，并在预定的延迟之后反馈并将数字输出信号加到数字输入信号上。它还包括将数字输入信号乘以预定常数（B）的前馈电路，并将所得到的信号加到反馈电路的数字输出信号上以产生数字输出信号。还提供了用于将前馈电路的数字输出信号乘以第二预定常数（C）以产生数字环路滤波器的数字输出信号的乘法器。

2. 发明授权

US5339353A Mobile communication system 失效
标题翻译：移动通信系统
公开(公告)号：US5339353A
公开(公告)日：1994-08-16
申请号：US847705
申请日：1992-03-05
申请人： Masaru Asahara , Takuro Oguchi , Shunroku Sasaki
发明人： Masaru Asahara , Takuro Oguchi , Shunroku Sasaki
IPC分类号： H04W24/00 , H04W68/00 , H04M11/00 , H04B1/00
CPC分类号： H04W24/00 , H04W68/00
摘要： A mobile communication system includes an exchange, a plurality of radio base stations coupled to the exchange, and a plurality of mobile stations. The exchange includes a device for obtaining receivable periods of the mobile stations, which are continuously maintained in a call receivable state during the receivable periods, a device for determining whether the mobile stations are busy and a decision device which sequentially sends call signals to the mobile stations to determine whether or not each of the stations responds to a call signal. The results of determination by the decision device are recorded in a recording device.
摘要翻译：移动通信系统包括交换机，耦合到交换机的多个无线电基站以及多个移动台。该交换机包括用于获取移动台的可接收周期的装置，其在可接收周期期间连续地保持在呼叫可接收状态，用于确定移动台是否正在忙的装置以及向移动台顺序发送呼叫信号的判定装置以确定每个站是否响应于呼叫信号。决定装置的判定结果记录在记录装置中。

3. 发明授权

US5335262A Radio communication adapter connected to mobile station and mobile communication system using the radio communication adapter 失效
标题翻译：使用无线电通信适配器连接到移动台和移动通信系统的无线电通信适配器
公开(公告)号：US5335262A
公开(公告)日：1994-08-02
申请号：US871412
申请日：1992-04-20
申请人： Takuro Oguchi , Shunroku Sasaki , Masaru Asahara
发明人： Takuro Oguchi , Shunroku Sasaki , Masaru Asahara
IPC分类号： H04M3/42 , H04M11/02 , H04W8/26 , H04W76/04 , H04W84/14 , H04W92/02 , H04W92/18 , H04M11/00 , H04B7/15 , H04B1/38 , H04Q7/00
CPC分类号： H04W76/04 , H04M11/022 , H04W8/26 , H04W84/14 , H04W92/02 , H04W92/18
摘要： A radio communication adapter is used in a mobile communication system including a first mobile communication network, first mobile stations registered in the first mobile communication network, a second mobile communication network connected to the first mobile communication network, and second mobile stations registered in the second mobile communication network. The radio communication adapter is attached to one of the second mobile stations. The radio communication adapter includes a radio communicating part for communicating, via a radio channel, with the first mobile stations located outside a first service area of the first mobile communication network, and a requesting part for requesting that first identification data of the first mobile stations located outside the first service area is registered, in connection with the second mobile stations, in the first mobile communication network via the above-mentioned one of the second mobile stations and the second mobile communication network.
摘要翻译：无线通信适配器用于包括第一移动通信网，第一移动通信网中登记的第一移动站，连接到第一移动通信网的第二移动通信网，第二移动站移动通信网络。无线电通信适配器连接到第二移动台之一。无线通信适配器包括无线电通信部分，用于经由无线电信道与位于第一移动通信网络的第一服务区域之外的第一移动站进行通信，以及请求部分，用于请求第一移动台的第一识别数据在第一移动通信网络中经由上述第二移动站和第二移动通信网络中的第一移动通信网络登记位于第一服务区域外的第二移动站。

4. 发明授权

US5295179A Portable telephone system having selectable bypass line 失效
标题翻译：便携式电话系统具有可选旁路线路
公开(公告)号：US5295179A
公开(公告)日：1994-03-15
申请号：US871055
申请日：1992-04-20
申请人： Masaru Asahara , Shunroku Sasaki , Takuro Oguchi
发明人： Masaru Asahara , Shunroku Sasaki , Takuro Oguchi
IPC分类号： H04M15/00 , H04W76/04 , H04W92/02 , H04M11/00
CPC分类号： H04W76/04 , H04W92/02
摘要： A portable telephone system includes a first telephone network including a terminal station, a first telephone set connected to the first telephone network via the terminal station, a second telephone network including a communication center which is connected to the first telephone network at a connection point, and at least one second telephone set registered in the communication center and connected to the first telephone network via the terminal station. The second telephone set is a portable telephone set having a base station part and a portable station. The communication center includes a first part for sending a line hold signal to the first telephone set via the first telephone network when a call to the portable station of the second telephone set is received via the first telephone network, and a second part for sending control information to the base station part of the second telephone set, where the control information includes a notification that a call is made to the portable station of the second telephone set from the first telephone set and a telephone number of the first telephone set. The base station part of the second telephone set includes a third part for dialing the telephone number of the first telephone set in response to the control information received from the communication center, so that a service connection is made, after the third means dials the telephone number of the first telephone set, between the first and second telephone sets via the terminal station of the first telephone network.
摘要翻译：便携式电话系统包括：第一电话网络，包括终端站，经由终端站连接到第一电话网络的第一电话机;第二电话网络，包括在连接点处连接到第一电话网络的通信中心; 以及至少一个第二电话机，其登记在所述通信中心并经由所述终端站连接到所述第一电话网络。第二电话机是具有基站部分和便携式电台的便携式电话机。通信中心包括：第一部分，用于经由第一电话网络接收到对第二电话机的便携式终端的呼叫时，经由第一电话网络向第一电话机发送线路保持信号;以及第二部分，用于发送控制信息发送到第二电话机的基站部分，其中控制信息包括从第一电话机向第二电话机的便携式电台进行呼叫的通知和第一电话机的电话号码。第二电话机的基站部分包括第三部分，用于响应于从通信中心接收到的控制信息拨打第一电话机的电话号码，从而在第三方式拨打电话之后进行业务连接第一电话机的号码，经由第一电话网络的终端站在第一和第二电话机之间。

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