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公开(公告)号：US5355363A
公开(公告)日：1994-10-11
申请号：US27479
申请日：1993-03-08
申请人： Katsumi Takahashi , Takashi Kurokawa , Nobuo Sekiguchi , Kazuo Suzuka , Sakari Ohira , Kiyoyuki Isawa , Fujio Sumi , Kenichi Suzuki
发明人： Katsumi Takahashi , Takashi Kurokawa , Nobuo Sekiguchi , Kazuo Suzuka , Sakari Ohira , Kiyoyuki Isawa , Fujio Sumi , Kenichi Suzuki
摘要： A voice transmission method and apparatus in a duplex radio system are disclosed in which a voice signal to be transmitted in a constant period of time is subjected to 1/N time compression, N being a numeral not smaller than 2.0. The time-compressed voice signal is supplied to a transmitter as a modulating signal and a transmitting operation is performed by the transmitter in synchronism with a period of time when the modulating signal is inputted to the transmitter. A receiving operation of receiving a time-compressed and modulated signal transmitted from the transmitter to demodulate it is performed by a receiver in a period of time other than the period of time when the transmitting operation is performed. A demodulated signal is subjected to N-ple time expansion to obtain a reproduced receive voice signal, and both the transmitting operation and the receiving operation are repeated at the constant period of time. In the voice transmission method and apparatus, a predetermined band of a signal corresponding to said signal to be transmitted, which is in a voice band, is extracted with a predetermined band width. The extracted signal is shifted to any band which is in the voice band and is other than the extracted band. A signal corresponding to the shifted signal is supplied to the transmitter as the modulating signal.
摘要翻译： 公开了一种在双工无线电系统中的语音传输方法和装置，其中要在一定时间内发送的语音信号经受1 / N时间压缩，N是不小于2.0的数字。 将时间压缩的语音信号作为调制信号提供给发射机，并且由发射机与调制信号输入到发射机的时间同步地执行发射操作。 从发送器发送的时间压缩和调制信号接收解调的接收操作由接收机在执行发送操作的时间段之外的时间段内执行。 对解调信号进行N次时间扩展，以获得再现的接收语音信号，并且在恒定时间段重复发送操作和接收操作。 在语音传输方法和装置中，以预定的带宽提取与声音频带中的要发送的信号相对应的信号的预定频带。 所提取的信号被移动到在声频带中的任何频带，并且不是所提取的频带。 与移位信号相对应的信号作为调制信号提供给发射机。
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2.发明授权Radio apparatus for simulataneously transmitting and receiving signals using a simple frequency 失效使用简单频率同时发送和接收信号的无线电设备
公开(公告)号：US5493698A
公开(公告)日：1996-02-20
申请号：US202217
申请日：1994-02-25
申请人： Osamu Suzuki , Kazuo Suzuka , Mitsuo Shiraishi , Sakari Ohira , Fujio Sumi , Kenichi Suzuki
发明人： Osamu Suzuki , Kazuo Suzuka , Mitsuo Shiraishi , Sakari Ohira , Fujio Sumi , Kenichi Suzuki
摘要： A radio apparatus having a unit for receiving a first signal from a first transceiver compressed in time by a predetermined rate, a unit for reproducing a first original signal from the first signal, a unit for receiving a second signal from a second transceiver compressed by the predetermined rate during the reception period of the first transceiver, a unit for reproducing a second original signal from the second signal, and a unit for adding the first and second original signals and outputting the added signal.
摘要翻译： 一种无线电设备，具有用于从第一收发机接收预定速率的时间压缩的第一信号的单元，用于从第一信号再现第一原始信号的单元，用于从由第一信号压缩的第二收发器接收第二信号的单元 在第一收发器的接收期间的预定速率，用于从第二信号再现第二原始信号的单元，以及用于相加第一和第二原始信号并输出相加信号的单元。
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公开(公告)号：US5524274A
公开(公告)日：1996-06-04
申请号：US226830
申请日：1994-04-13
申请人： Norio Takahashi , Nobuo Sekiguchi , Sakari Ohira , Fujio Sumi
发明人： Norio Takahashi , Nobuo Sekiguchi , Sakari Ohira , Fujio Sumi
摘要： A transceiver having a transmitting unit and a receiving unit for performing substantially simultaneous communication with another transceiver in both directions by using a single frequency carrier. The transceiver includes a unit for generating a synchronizing signal for alternately switching between a transmission time period and a reception time period of the transceiver at a predetermined period, a signal processing unit for converting an input signal into a compressed signal by compressing a time axis of the input signal by a predetermined ratio, and affixing the synchronizing signal to the compressed signal, a unit for supplying the compressed signal with the synchronizing signal to the transmitting unit during the transmission time period, and a unit for reproducing an original signal from a signal transmitted from the other transceiver and received by the receiving unit during the reception time period, by expanding a time axis of the signal by a predetermined ratio. The transceiver further includes a signal detecting unit for detecting an absence/presence of the input signal and generating an output signal corresponding the absence/presence, and a control unit for controlling the operation of the signal processing unit in accordance with the output signal of the signal detecting unit. The control unit controls operation of the signal processing unit to transmit only a signal related to the synchronizing signal to the other transceiver, when the signal detecting unit generates the output signal representing an absence of the input signal for a predetermined time period.
摘要翻译： 一种具有发射单元和接收单元的收发器，用于通过使用单个频率载波在两个方向上执行与另一收发器的基本上同时的通信。 收发器包括用于产生用于在预定周期内在发送时间段和收发器的接收时间段之间交替切换的同步信号的单元，用于通过压缩时间轴将输入信号转换成压缩信号的信号处理单元 以预定比例输入信号，并将该同步信号附加到压缩信号;在发送期间向发送单元提供具有同步信号的压缩信号的单元，以及用于从信号再现原始信号的单元 从另一收发器发送并在接收时间段期间由接收单元接收，通过以预定比例扩展信号的时间轴。 收发信机还包括信号检测单元，用于检测输入信号的不存在和存在，并产生对应于不存在/不存在的输出信号;以及控制单元，用于根据信号处理单元的输出信号控制信号处理单元的操作 信号检测单元。 当信号检测单元产生表示在预定时间段内输入信号不存在的输出信号时，控制单元控制信号处理单元的操作，以仅将与同步信号相关的信号发送到另一收发器。
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4.发明授权
公开(公告)号：US5633862A
公开(公告)日：1997-05-27
申请号：US330676
申请日：1994-10-28
申请人： Kenichi Suzuki , Sakari Ohira , Fujio Sumi , Osamu Suzuki
发明人： Kenichi Suzuki , Sakari Ohira , Fujio Sumi , Osamu Suzuki
CPC分类号： H04M3/02 , H04Q1/4575 , H04M1/50
摘要： In radio communication system in which single frequency simultaneous transmission and reception is performed, a speech audio signal is divided by a predetermined time interval. A transmission time and a reception time are allotted in the predetermined time. A time-compressed signal is transmitted during the transmission time, and a time-compressed signal transmitted from other transceiver is received during the reception time and it is decompressed to the original length. The transmission time and the reception time are alternately repeated to transmit and receive the audio signals substantially simultaneously by a single frequency, and the audio signal is reproduced from the received signal. When communication with a telephone set is to be established, a DTMF signal is used as a dialing signal to call the telephone set from the transceiver. The DTMF signal is time-compressed and then transmitted along with the speech signal. A transmission timing of the DTMF signal is controlled, and the generated DTMF signal is temporarily stored in a memory. When the transmission of the DTMF signal can be completed before the transmission time is switched to the reception time is determined, and if it can, the DTMF signal is read from the memory and transmitted.
摘要翻译： 在执行单频同时发送和接收的无线电通信系统中，语音音频信号被划分预定的时间间隔。 传输时间和接收时间在预定时间内被分配。 在发送时间期间发送时间压缩信号，并且在接收时间期间接收从其他收发器发送的时间压缩信号，并将其解压缩为原始长度。 交替地重复发送时间和接收时间，以单个频率基本上同时发送和接收音频信号，并且从接收到的信号再现音频信号。 要建立与电话机的通信时，将使用DTMF信号作为从收发机呼叫电话机的拨号信号。 DTMF信号被时间压缩，然后与语音信号一起传输。 控制DTMF信号的发送定时，将生成的DTMF信号暂时存储在存储器中。 当在传输时间切换到接收时间之前可以完成DTMF信号的传输，并且如果可以，则从存储器读取DTMF信号并发送。
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5.发明授权
公开(公告)号：US5697049A
公开(公告)日：1997-12-09
申请号：US223976
申请日：1994-04-06
申请人： Mitsuo Shiraishi , Sakari Ohira , Fujio Sumi
发明人： Mitsuo Shiraishi , Sakari Ohira , Fujio Sumi
CPC分类号： H04B7/2606
摘要： A radio relay communication system wherein a signal transmitted from active one of a plurality of radio units is received and recorded. When the transmission operation of the particular radio unit stops, the recorded signal is reproduced and transmitted by a relay unit, and another radio unit receives the signal from the relay unit. A relay start signal is transmitted from the first radio unit. and is received by the relay unit. In response to the relay start signal, the relay unit generates a sync signal of predetermined period. The first radio unit, in accordance with the reception of the sync signal, transmits an input signal as compressed to less than one half along the time axis. The relay unit alternates between the period of receiving the compressed signal and the period of transmission in synchronism with the sync signal. The compressed signal transmitted from the relay unit during the transmission period is received by the second radio unit and expanded along the time axis thereby to reproduce the input signal.
摘要翻译： 一种无线电中继通信系统，其中从多个无线电单元中的一个无线电单元发送的信号被接收和记录。 当特定无线电单元的发送操作停止时，由中继单元再现和发送所记录的信号，另一个无线电单元接收来自中继单元的信号。 从第一无线电单元发送继电器开始信号。 并由中继单元接收。 响应于继电器开始信号，中继单元产生预定周期的同步信号。 第一无线电单元根据同步信号的接收，沿着时间轴将压缩的输入信号发送到不到一半的位置。 中继单元在与同步信号同步的接收压缩信号的周期和传输周期之间交替。 在发送期间从中继单元发送的压缩信号由第二无线单元接收并沿着时间轴扩展，从而再现输入信号。
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公开(公告)号：US5490167A
公开(公告)日：1996-02-06
申请号：US671821
申请日：1991-03-28
申请人： Fujio Sumi , Susumu Nakabayashi , Sakari Ohira , Kouichi Ishikawa
发明人： Fujio Sumi , Susumu Nakabayashi , Sakari Ohira , Kouichi Ishikawa
摘要： A duplex voice communication radio transmitter-receiver according to the present invention is provided with a low-pass filter arranged before a time compressing device in a transmitter section for cutting off a higher frequency portion of the band of a voice signal thus to decreasing the maximum modulation frequency of the same to less than a half so that it can be operated with the use of an assigned, single frequency transmission radio wave of which frequency band is legally limited, improved in the utilization of frequencies, minimized in the delay of communication signals, and enhanced in the articulation and intelligibility of a reproduced voice sound.
摘要翻译： PCT No.PCT / JP90 / 01014 Sec。 371日期1991年3月28日 102（e）1991年3月28日PCT PCT 1990年8月8日PCT公布。 出版物WO91 / 02414 日本1991年2月21日。根据本发明的双工语音通信无线电发射机 - 接收机具有布置在发射机部分中的时间压缩装置之前的低通滤波器，用于切断频带的较高频率部分 语音信号从而将其最大调制频率降低到小于一半，使得其可以使用被规定的单频发射无线电波进行操作，频率在法律上受限制，频率的利用得到改善， 在通信信号的延迟中最小化，并且增强了再现的语音的清晰度和清晰度。
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公开(公告)号：US5508619A
公开(公告)日：1996-04-16
申请号：US324507
申请日：1994-10-18
申请人： Masaaki Ozawa , Sakari Ohira
发明人： Masaaki Ozawa , Sakari Ohira
CPC分类号： G01R31/088
摘要： There is disclosed a surge discriminating and locating system having at least one master station and at least one slave station. The system comprises surge receiving means for receiving surges which occur on a power transmission line, locating means for locating a point where the surge occurs, digitizing means for digitizing said surge into a digital signal, extraction means for extracting from said digital signal the characterized portions thereof as information representative of the surge waveform, memory means for storing predetermined reference information concerning the nature of surges, and discriminating means for comparing said information representative of the surge wave form with said reference information stored in said memory means to discriminate the kind of surge.
摘要翻译： 公开了具有至少一个主站和至少一个从站的浪涌识别和定位系统。 该系统包括用于接收在电力传输线上发生的浪涌的浪涌接收装置，用于定位发生浪涌的点的定位装置，用于将所述浪涌数字化为数字信号的数字化装置，用于从所述数字信号中提取特征部分 作为表示浪涌波形的信息，存储有关浪涌特性的预定参考信息的存储装置，以及用于将表示浪涌波形式的所述信息与存储在所述存储装置中的所述参考信息进行比较的鉴别装置，以区分浪涌的种类 。
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公开(公告)号：US06259255B1
公开(公告)日：2001-07-10
申请号：US09207722
申请日：1998-12-08
申请人： Sakari Ohira , Masaaki Ozawa , Toshiaki Kojima
发明人： Sakari Ohira , Masaaki Ozawa , Toshiaki Kojima
IPC分类号： G01R3108
CPC分类号： G01R31/085
摘要： A surge locating system and a method thereof which can accomplish the surge locating with high accuracy and with relatively simple structure. When the surge occurs, the voltage is generated on the neutral point of Y-connected three-phase alternating current transmission line because of losing a voltage balance on the three-phase alternating current transmission line. The surge locating can be accomplished by detecting the voltage generated in the neutral point. The neutral point is grounded, and the surge locating system according to the present invention is installed between the neutral point and the grounding point. The voltage generated in the neutral point is introduced into the surge locating system and the detecting time thereof is stored. This detecting time is stored in the respective stations, and the surge point can be located based on the detecting time difference between the stations.
摘要翻译： 一种浪涌定位系统及其方法，其可以以高精度和相对简单的结构实现浪涌定位。 当发生浪涌时，由于在三相交流输电线路上失去电压平衡，在Y连接的三相交流输电线路的中性点产生电压。 浪涌定位可以通过检测在中性点产生的电压来实现。 中性点接地，根据本发明的浪涌定位系统安装在中性点和接地点之间。 将中性点产生的电压引入浪涌定位系统，并存储其检测时间。 该检测时间存储在各个站中，并且可以基于站之间的检测时间差来定位浪涌点。
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9.发明授权Radio communication apparatus and method for multiplex transmission of voice and data signals 失效用于语音和数据信号的多路复用传输的无线电通信装置和方法
公开(公告)号：US5553079A
公开(公告)日：1996-09-03
申请号：US413265
申请日：1995-03-30
申请人： Atsuyoshi Niki , Tsyneyuki Minowa , Ichiro Maeda , Sakari Ohira
发明人： Atsuyoshi Niki , Tsyneyuki Minowa , Ichiro Maeda , Sakari Ohira
CPC分类号： A61B5/0006 , A61B5/7232 , H04J3/1688
摘要： A radio communication apparatus for transmitting a voice signal and a data signal in a multiplex form. The transmitting side of the radio communication apparatus includes: a sampling unit for sampling the voice signal and the data signal and generating a digital voice signal and a digital data signal; a time division unit for dividing the digital voice signal and the digital data signal on the basis of a predetermined period; a modulation unit for modulating the divided digital data signal by a predetermined digital modulation scheme; a unit for compressing the divided digital voice signal at a predetermined compression factor and generating a compressed voice signal; a unit for combining the divided and compressed voice signal and the divided and digitally modulated digital data signal and generating a multiplex signal; and a unit for modulating a carrier signal by the multiplex signal and transmitting the modulated carrier signal as a transmission signal.
摘要翻译： 一种用于以多路复用形式发送语音信号和数据信号的无线电通信装置。 无线电通信装置的发送侧包括：采样单元，用于对语音信号和数据信号进行采样，并产生数字语音信号和数字数据信号; 时分单元，用于基于预定周期分割数字语音信号和数字数据信号; 调制单元，用于通过预定的数字调制方案调制分割的数字数据信号; 用于以预定压缩因子压缩分割的数字语音信号并产生压缩语音信号的单元; 用于组合分频压缩语音信号和分频数字调制数字数据信号并产生多路复用信号的单元; 以及用于通过多路复用信号调制载波信号并发送调制载波信号作为发送信号的单元。
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10.发明授权
公开(公告)号：US5956650A
公开(公告)日：1999-09-21
申请号：US501179
申请日：1995-07-11
申请人： Osamu Suzuki , Mitsuo Shiraishi , Sakari Ohira
发明人： Osamu Suzuki , Mitsuo Shiraishi , Sakari Ohira
CPC分类号： H04W4/10 , H04W76/005
摘要： A communication system for performing bidirectional communications substantially simultaneously between a telephone line and a radio communication system by using a single-frequency carrier. A base station includes a first radio transceiver and a line connector disposed between the first radio transceiver and the telephone line. A terminal station includes a second radio transceiver. Each of the first and second radio transceivers has a control unit, a transmitter unit including a signal compressor, a synchronizing signal generator and a modulator, and a receiver unit including a signal expander. The control unit sets the line connector to an interconnecting state in response to a connection request signal from the telephone line or the terminal station, while establishes a communication enabling state between the telephone line and the terminal station during a connection processing period. After the communication enabling state has been set up, a speech enabling state is established between the telephone line and the terminal station. The connection processing period is changed over to a speech period after the communication enable state has been established, to thereby allow communication between the telephone line and the terminal station.
摘要翻译： 一种用于通过使用单频载波在电话线和无线电通信系统之间基本上同时执行双向通信的通信系统。 基站包括第一无线电收发器和设置在第一无线电收发器和电话线之间的线路连接器。 终端包括第二无线电收发器。 第一和第二无线电收发机中的每一个具有控制单元，包括信号压缩器，同步信号发生器和调制器的发送器单元，以及包括信号扩展器的接收器单元。 控制单元响应于来自电话线路或终端站的连接请求信号将线路连接器设置为互连状态，同时在连接处理期间建立电话线路与终端站之间的通信使能状态。 在通信使能状态已经建立之后，在电话线和终端站之间建立语音使能状态。 在通信使能状态已经建立之后，将连接处理时段切换到语音周期，从而允许电话线路与终端站之间的通信。
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