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    Digital radiocommunication terminal
    2.
    发明授权
    Digital radiocommunication terminal 失效
    数字无线电通信终端

    公开(公告)号：US5696792A

    公开(公告)日：1997-12-09

    申请号：US356464

    申请日：1994-12-15

    申请人： Shigeyuki Sudo ,  Yasuaki Takahara ,  Katsumi Takeda ,  Jun Yamada

    发明人： Shigeyuki Sudo ,  Yasuaki Takahara ,  Katsumi Takeda ,  Jun Yamada

    IPC分类号： H03D7/16 ,  H04B1/10 ,  H04B1/40 ,  H04L27/18 ,  H04L27/10

    CPC分类号： H04L27/18 ,  H03D7/163 ,  H04B1/406

    摘要： The number of oscillators required to construct a digital radiocommunication terminal can be reduced and a circuit used for the digital radiocommunication terminal can be reduced in size. For this purpose, the digital radiocommunication terminal for effecting information transmission using an N (integer)-phase-shift-keyed signal (identification symbol number N=4 upon .pi./4 shifted QPSK modulation), is constructed such that an oscillation frequency generated from a reference oscillator employed with a frequency synthesizer is selected to have a common multiple of a second intermediate frequency and an identification symbol phase N and is supplied to a detector for outputting received data therefrom.

    摘要翻译： 可以减少构造数字无线电通信终端所需的振荡器的数量，并且可以减小用于数字无线电通信终端的电路的尺寸。 为此，使用N（整数）相移键控信号（在pi / 4移位QPSK调制时的识别码元号N = 4）进行信息传输的数字无线电通信终端被构造成使得从 与频率合成器一起使用的参考振荡器被选择为具有第二中频和识别符号相位N的公倍数，并被提供给用于从其输出接收数据的检测器。

    PI/4 shift QPSK modulator and communication apparatus used therewith
    3.
    发明授权
    PI/4 shift QPSK modulator and communication apparatus used therewith 失效
    PI / 4移位QPSK调制器及其使用的通信装置

    公开(公告)号：US5361047A

    公开(公告)日：1994-11-01

    申请号：US56899

    申请日：1993-05-05

    申请人： Yasuaki Takahara ,  Tomohiro Esaki ,  Shigeyuki Sudo ,  Teiji Okamoto

    发明人： Yasuaki Takahara ,  Tomohiro Esaki ,  Shigeyuki Sudo ,  Teiji Okamoto

    IPC分类号： H04L27/20

    CPC分类号： H04L27/2092

    摘要： A .pi./4 shift QPSK modulator for receiving digital signals and for outputting a modulated signal therefrom in accordance with each of the inputted digital signals. The .pi./4 QPSK modulator is utilized in a communication apparatus and includes a counter for counting the number of the inputted digital signals, a phase information arithmetic unit for receiving a value of an output from the counter and a value of each of the inputted digital signals for outputting phase information of the signal to be modulated, an arithmetic unit for performing an arithmetic operation on values representing an impulse response of the output phase information from the phase information arithmetic unit and outputting impulse response values in accordance therewith, and an accumulating unit for accumulating impulse response values outputted from the arithmetic unit and for performing an arithmetic operation for enabling generation of a .pi./4 shift QPSK modulated signal.

    摘要翻译： 一种用于接收数字信号并根据每个输入的数字信号从其输出调制信号的π/ 4移位QPSK调制器。 pi / 4QPSK调制器用于通信设备中，并且包括用于对输入的数字信号的数量进行计数的计数器，用于接收来自计数器的输出值的相位信息运算单元和输入的数字信号的每一个的值 用于输出要调制的信号的相位信息的信号，用于对表示来自相位信息运算单元的输出相位信息的脉冲响应的值执行运算的运算单元，并输出与之相应的脉冲响应值;以及累积单元 用于累积从运算单元输出的脉冲响应值，并执行用于实现pi / 4移位QPSK调制信号的产生的算术运算。

    Communication system having oscillation frequency calibrating function
    4.
    发明授权
    Communication system having oscillation frequency calibrating function 失效
    具有振荡频率校准功能的通信系统

    公开(公告)号：US5493710A

    公开(公告)日：1996-02-20

    申请号：US923573

    申请日：1992-08-03

    申请人： Yasuaki Takahara ,  Shigeyuki Sudo

    发明人： Yasuaki Takahara ,  Shigeyuki Sudo

    IPC分类号： H03D7/16 ,  H03J7/06 ,  H04B1/16

    CPC分类号： H03J7/065 ,  H03D7/165

    摘要： A communication system which includes a receiving section having a frequency convertor for converting a received signal into an intermediate frequency signal by mixing with a local oscillation signal, and a demodulator for demodulating the received signal converted into the intermediate frequency signal, a transmission section for modulating a transmission signal received thereby, to transmit the so modulated signal, and an input/output section for receiving the demodulated signal from the receiving section and outputting it externally and receiving the transmission signal externally and outputting it to the transmission section. The receiving section includes a local oscillator for generating the local oscillation signal, reference frequency generator for generating a reference signal, calibration signal generator for generating a calibration signal having a predetermined frequency based upon the reference signal, to input the calibration signal to the frequency converter, counter for counting the frequency of the intermediate frequency signal, and corrector for detecting a frequency error based upon the counted value of the intermediate frequency signal. The frequency converter converts the calibration signal into the intermediate frequency signal by mixing with the local oscillation frequency. The counter counts the frequency of the calibration signal converted by the frequency converter as the intermediate frequency signal. The corrector detects the frequency error from a frequency difference between the counted value of the calibration signal and a predetermined intermediate frequency reference value, thereby generating a signal for frequency correction based upon the thus detected frequency error.

    摘要翻译： 一种通信系统，包括具有频率转换器的接收部分，用于通过与本地振荡信号混合将接收信号转换成中频信号;以及解调器，用于解调转换成中频信号的接收信号;发送部分，用于调制 由此接收到的发送信号，发送这样的调制信号;以及输入/输出部分，用于从接收部分接收解调信号，并将其从外部输出，并从外部接收发送信号并将其输出到发送部分。 接收部分包括用于产生本地振荡信号的本地振荡器，用于产生参考信号的参考频率发生器，用于基于参考信号产生具有预定频率的校准信号的校准信号发生器，以将校准信号输入到变频器 用于计数中频信号的频率的计数器，以及用于基于中频信号的计数值检测频率误差的校正器。 变频器通过与本地振荡频率混合将校准信号转换成中频信号。 计数器将由变频器转换的校准信号的频率作为中频信号进行计数。 校正器根据校准信号的计数值与预定的中频参考值之间的频率差来检测频率误差，从而基于这样检测的频率误差产生用于频率校正的信号。

    Mobile communications equipment which detects and notifies when it is moved into or out of a service area
    5.
    发明授权
    Mobile communications equipment which detects and notifies when it is moved into or out of a service area 失效
    移动通信设备，其检测并通知何时被移入或移出服务区域

    公开(公告)号：US5450613A

    公开(公告)日：1995-09-12

    申请号：US112801

    申请日：1993-08-27

    申请人： Yasuaki Takahara ,  Shigeyuki Sudo ,  Shuuichi Sekiguchi

    发明人： Yasuaki Takahara ,  Shigeyuki Sudo ,  Shuuichi Sekiguchi

    IPC分类号： H04M19/04 ,  H04W88/02 ,  H04B7/00

    CPC分类号： H04W88/02 ,  H04M1/72516 ,  H04M19/04 ,  H04M19/047

    摘要： A mobile communications equipment which communicates with another equipment through a base station, and in which the state change of the mobile communications equipment based on the movement thereof, such as the movement from outside a service area into the service area, is detected and is notified to the user of the mobile communications equipment. The notification is given by a method comprising the steps of accepting an instruction as to whether or not the user is to be notified that the state change has occurred between a state in which the equipment is communicable and a state in which it is incommunicable; analyzing if the communications are possible, on the basis of a signal sent from the base station, subject to the instruction of giving the notification; detecting the state change from the incommunicable state into the communicable state on the basis of the analyzed result; and notifying the user of the occurrence of the state change into the communicable state in response to the detection of the state change, by at least one notifying expedient selected from among production of a voice message, a notifying sound, a notifying light, and vibrations.

    摘要翻译： 通过基站与另一设备进行通信的移动通信设备，并且其中检测到移动通信设备的基于其移动的状态改变（例如从服务区域外部到服务区域的移动）并被通知 给移动通信设备的用户。 该通知是通过以下方法给出的，该方法包括以下步骤：接收关于用户是否在设备可通信的状态与其不可通信的状态之间通知状态改变已经发生的指令的步骤; 根据从基站发送的信号，分析通信是否可行，受制于通知的指示; 根据分析结果，检测国家从不通国家向通信国转变; 通过响应于状态变化的检测，通过至少一个从语音消息的生成，通知声音，通知光和振动中选出的通知方法，向用户通知状态变化发生到可通信状态 。

    .pi./4 shift QPSK modulator and communication apparatus
    6.
    发明授权
    .pi./4 shift QPSK modulator and communication apparatus 失效
    pi / 4移位QPSK调制器和通信设备

    公开(公告)号：US5210775A

    公开(公告)日：1993-05-11

    申请号：US653895

    申请日：1991-02-12

    申请人： Yasuaki Takahara ,  Tomohiro Ezaki ,  Shigeyuki Sudo ,  Teiji Okamoto

    发明人： Yasuaki Takahara ,  Tomohiro Ezaki ,  Shigeyuki Sudo ,  Teiji Okamoto

    IPC分类号： H04L27/20

    CPC分类号： H04L27/2092

    摘要： A .pi./4 shift QPSK modulator for receiving digital signals and for outputting a modulated signal therefrom in accordance with each of the inputted digital signals. The .pi./4 QPSK modulator is utilized in a communication apparatus and includes a counter for counting the number of the inputted digital signals, a phase information arithmetic unit for receiving a value of an output from the counter and a value of each of the inputted digital signals for outputting phase information of the signal to be modulated, an arithmetic unit for performing an arithmetic operation on values representing an impulse response of the output phase information from the phase information arithmetic unit and outputting impulse response values in accordance therewith, and an accumulating unit for accumulating impulse response values outputted from the arithmetic unit and for performing an arithmetic operation for enabling generation of a .pi./4 shift QPSK modulated signal.

    摘要翻译： 一种用于接收数字信号并根据每个输入的数字信号从其输出调制信号的π/ 4移位QPSK调制器。 pi / 4QPSK调制器用于通信设备中，并且包括用于对输入的数字信号的数量进行计数的计数器，用于接收来自计数器的输出值的相位信息运算单元和输入的数字信号的每一个的值 用于输出要调制的信号的相位信息的信号，用于对表示来自相位信息运算单元的输出相位信息的脉冲响应的值执行运算的运算单元，并输出与之相应的脉冲响应值;以及累积单元 用于累积从运算单元输出的脉冲响应值，并执行用于实现pi / 4移位QPSK调制信号的产生的算术运算。

    Cellular mobile telephone apparatus and an alarm device therefor
    7.
    发明授权
    Cellular mobile telephone apparatus and an alarm device therefor 失效
    蜂窝移动电话设备及其报警装置

    公开(公告)号：US06697647B2

    公开(公告)日：2004-02-24

    申请号：US09789817

    申请日：2001-02-22

    申请人： Kazutoshi Higuchi ,  Hiroyuki Tomihara ,  Yasuaki Takahara ,  Yoshihiro Kanomata

    发明人： Kazutoshi Higuchi ,  Hiroyuki Tomihara ,  Yasuaki Takahara ,  Yoshihiro Kanomata

    IPC分类号： H04B138

    CPC分类号： H04W88/02 ,  G08B3/1041 ,  H04M1/72519 ,  H04M1/7253 ,  H04M19/047

    摘要： A cellular mobile telephone system including a cellular mobile telephone apparatus and a peripheral apparatus communicating bidirectionally. The cellular mobile telephone apparatus may include: a modulating/demodulating device demodulating radio frequency signals into a digital signal including a control signal; a controlling device controls operation of the cellular mobile telephone apparatus in accordance with the control signal; a first communicating device performs bidirectional communication, including transmitting a first control information controlling operation of the peripheral apparatus. The peripheral apparatus may include: an inputting device for inputting a second control information; a second communication device performing bidirectional communication with the cellular mobile telephone apparatus; and a control device controlling operation of the peripheral apparatus in accordance with the first control information, and performing control of the cellular mobile telephone apparatus through the communication device according to the second control information for changing a mode of the cellular mobile telephone apparatus.

    摘要翻译： 一种蜂窝移动电话系统，包括蜂窝移动电话设备和双向通信的外围设备。 蜂窝移动电话装置可以包括：调制/解调装置，将射频信号解调成包括控制信号的数字信号; 控制装置根据控制信号控制蜂窝移动电话装置的操作; 第一通信设备执行双向通信，包括发送外围设备的第一控制信息控制操作。 外围装置可以包括：用于输入第二控制信息的输入装置; 第二通信设备，与蜂窝移动电话设备进行双向通信; 以及控制装置，根据第一控制信息控制外围设备的操作，并且根据用于改变蜂窝移动电话设备的模式的第二控制信息通过通信设备执行蜂窝移动电话设备的控制。

    Cellular mobile telephone apparatus and an alarm device therefor
    9.
    发明授权
    Cellular mobile telephone apparatus and an alarm device therefor 失效
    蜂窝移动电话设备及其报警装置

    公开(公告)号：US06377823B1

    公开(公告)日：2002-04-23

    申请号：US09479226

    申请日：2000-01-07

    申请人： Kazutoshi Higuchi ,  Hiroyuki Tomihara ,  Yasuaki Takahara ,  Yoshihiro Kanomata

    发明人： Kazutoshi Higuchi ,  Hiroyuki Tomihara ,  Yasuaki Takahara ,  Yoshihiro Kanomata

    IPC分类号： H04B138

    CPC分类号： H04W88/02 ,  G08B3/1041 ,  H04M1/72519 ,  H04M1/7253 ,  H04M19/047

    摘要： A cellular mobile telephone apparatus including a main body, and an alarm device which is provided separately from the main body, the main body including: receiving/transmitting unit for receiving and transmitting radio frequency signals between a base station; modulating/demodulating unit for modulating and demodulating between the radio frequency signals, and a conversation signal and a control signal; telephone receiver unit for reproducing audible conversation voice in response to the demodulated conversation signal from the modulating/demodulating unit; telephone transmitting unit for converting conversation voice into the conversation signal; a controller for controlling operation of the main body of the cellular mobile telephone apparatus in accordance with the control signal; and an alarm device for providing an alarm signal which includes an identification information and is transmitted through the radio frequency, when a call is terminated at the main body; and the alarm device including: receiving unit for receiving the alarm signal of radio frequency; a discriminatory for discriminating the alarm signal assigned to itself from others by the identification information included therein; and an alarm unit for alarming call termination in response to the identification by the discriminator.

    摘要翻译： 一种蜂窝移动电话设备，包括主体和与主体分开设置的报警装置，主体包括：接收/发送单元，用于在基站之间接收和发送射频信号; 调制/解调单元，用于在射频信号之间进行调制和解调，以及对话信号和控制信号; 电话接收单元，用于响应于来自调制/解调单元的解调对话信号再现可听话音语音; 电话发送单元，用于将会话语音转换成会话信号; 控制器，用于根据控制信号控制蜂窝移动电话设备的主体的操作;以及报警装置，用于提供包括识别信息并通过射频发送的报警信号，当呼叫终止于 主体; 该报警装置包括：接收射频报警信号的接收单元; 用于通过其中包括的识别信息来区分对其自身与其他人分配的警报信号的歧视; 以及响应于鉴别器识别的用于报警呼叫终止的报警单元。