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。

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。

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。

公开(公告)号：US5778314A

公开(公告)日：1998-07-07

申请号：US518975

申请日：1995-08-24

申请人： Shigeyuki Sudo ,  Yasuaki Takahara ,  Toru Tanaka

发明人： Shigeyuki Sudo ,  Yasuaki Takahara ,  Toru Tanaka

IPC分类号： H04M1/2755 ,  H04M1/57 ,  H04M1/65 ,  H04M1/725 ,  H04M11/00 ,  H04N1/00 ,  H04N1/32 ,  H04Q7/20 ,  H04Q7/30 ,  H04Q7/32

CPC分类号： H04N1/00302 ,  H04M1/2755 ,  H04M1/57 ,  H04M1/6505 ,  H04M1/725 ,  H04N1/00127 ,  H04N1/00326 ,  H04N1/00334 ,  H04N1/32101 ,  H04N1/32122 ,  H04N2201/0055 ,  H04N2201/3243 ,  H04N2201/3264 ,  H04N2201/3269 ,  H04N2201/3271 ,  H04N2201/3274

摘要： A speech message recording and reproducing method and apparatus wherein a speech message associated with a facsimile transmission is stored in a communication apparatus having an automatic answering telephone apparatus associated with a facsimile apparatus. Information of the speech apparatus including at least a storage address thereof is converted to an optical pattern for printing on a recording paper. The printed optical pattern is optically detected, interpreted and transmitted by radio communication to the communication apparatus and the speech message stored at the storage address is reproduced. The optical pattern is read by a reader forming part of a portable telephone unit.

摘要翻译： 一种语音消息记录和再现方法和装置，其中与传真传输相关联的语音消息被存储在具有与传真设备相关联的自动应答电话设备的通信设备中。 至少包括其存储地址的语音装置的信息被转换为用于在记录纸上打印的光学图案。 通过无线电通信光学检测，解释和发送打印的光学图案到通信设备，并且再现存储在存储地址处的语音消息。 光学图案由形成便携式电话单元的一部分的读取器读取。

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 。

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。

公开(公告)号：US07471715B2

公开(公告)日：2008-12-30

申请号：US11907423

申请日：2007-10-12

申请人： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

发明人： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

IPC分类号： H04L27/00

CPC分类号： H04B1/70756 ,  H04B1/707 ,  H04B1/7075 ,  H04B2201/70709 ,  H04W52/029 ,  Y02D70/26 ,  Y02D70/40

摘要： A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.

公开(公告)号：US07447256B2

公开(公告)日：2008-11-04

申请号：US11898944

申请日：2007-09-18

申请人： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

发明人： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

IPC分类号： H04L27/00

CPC分类号： H04B1/70756 ,  H04B1/707 ,  H04B1/7075 ,  H04B2201/70709 ,  H04W52/029 ,  Y02D70/26 ,  Y02D70/40

摘要： A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces OV(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.

摘要翻译： 一种用于CDMA系统的接收机，其通过由低功率定时器监视暂停时段来减少在间歇接收操作的暂停时段期间的功耗，从而关闭VC-TCXO，参考信号组生成和接收单元以及调制解调器单元 被设置为睡眠状态。 在恢复接收操作时，开始高精度定时器对一段时间进行计数，并存储接收信号的一部分。 在该时间段内计算存储数据的PN码相位，以获得相位偏差的指示值。 基于指示值计算短码和长码的状态向量和另外的接收时间。 当高精度定时器对时间段进行计数并产生OV（d）时，开始通过耙式解调，解复用和解扰器单元的解调操作，并在接收时间期间继续。

公开(公告)号：US08130816B2

公开(公告)日：2012-03-06

申请号：US12275309

申请日：2008-11-21

申请人： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

发明人： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

IPC分类号： H04B1/00

CPC分类号： H04B1/70756 ,  H04B1/707 ,  H04B1/7075 ,  H04B2201/70709 ,  H04W52/029 ,  Y02D70/26 ,  Y02D70/40

摘要： A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.

摘要翻译： 一种用于CDMA系统的接收机，其通过由低功率定时器监视暂停时段来减少在间歇接收操作的暂停时间段期间的功耗，从而关闭VC-TCXO，参考信号组生成和接收单元以及调制解调器单元 被设置为睡眠状态。 在恢复接收操作时，开始高精度定时器对一段时间进行计数，并存储接收信号的一部分。 在该时间段内计算存储数据的PN码相位，以获得相位偏差的指示值。 基于指示值计算短码和长码的状态向量和另外的接收时间。 当高精度定时器对时间段进行计数并产生0V（d）时，起动解调，解复用和解扰器单元的解调操作开始并且在接收时间期间继续。

公开(公告)号：US20100014484A1

公开(公告)日：2010-01-21

申请号：US12567142

申请日：2009-09-25

申请人： Shigeyuki Sudo ,  Yukinori Asada ,  Yoshinori Chida ,  Fumiharu Nakahara

发明人： Shigeyuki Sudo ,  Yukinori Asada ,  Yoshinori Chida ,  Fumiharu Nakahara

IPC分类号： H04W36/00 ,  H04B7/216

CPC分类号： H04W48/16 ,  H04W36/00 ,  H04W52/0229 ,  H04W60/00 ,  H04W88/02 ,  Y02D70/00

摘要： There is disclosed a handoff control method for registering a CDMA mobile station in such a way that battery power wastage is prevented if successive attempts to register the station fail. If it is judged that registration fails (step S106), idle handoff is inhibited (step S107). The mobile station shifts to a registration-waiting sleep mode (step S108 and state ST10) in which the sending and receiving operation of the mobile station is paused for a given time. When a sleep timer that is set in the step S108 times out, registration is resumed under certain conditions. On resumption, a new pilot signal is acquired.

摘要翻译： 公开了一种用于登记CDMA移动站的切换控制方法，使得如果连续尝试登记站失败，则防止电池电力浪费。 如果判断为注册失败（步骤S106），则禁止空闲切换（步骤S107）。 移动台转移到停止给定时间的移动台的发送和接收操作的注册等待休眠模式（步骤S108和状态ST10）。 当在步骤S108中设置的睡眠定时器超时时，在某些条件下重新开始登记。 恢复后，将获得新的导频信号。