会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 42. 发明授权
    • XDSL modem
    • XDSL调制解调器
    • US07224672B2
    • 2007-05-29
    • US09964900
    • 2001-09-27
    • Yasuhiro Arai
    • Yasuhiro Arai
    • H04J1/02H04L12/26H04M3/22
    • H04L1/243
    • A reception result of an analog signal transmitted from a local switch to a subscriber line, or a voltage difference corresponding to a line current is analyzed, and a transmission characteristic in the subscriber line is evaluated based on an analyzing result. The transmission characteristic is sent to a network by use of a function of an analog transmitting unit. Noises having power of a predetermined threshold value or more are detected from a data signal input to a digital transmitting unit, and a periodicity of the noises is examined, whereby influences of the cyclic noises are evaluated, and an examination result is sent to the network by use of the function of the analog transmitting unit. As a result, provided is an xDSL modem capable of automatically collecting various characteristics of the subscriber line connected thereto prior to a start of a provision of a broadband communication service.
    • 分析从本地交换机向用户线路发送的模拟信号的接收结果或对应于线路电流的电压差,并且基于分析结果评估用户线路中的传输特性。 通过使用模拟发送单元的功能将传输特性发送到网络。 从输入到数字发送单元的数据信号中检测出具有预定阈值或更大的功率的噪声,并且检查周期性噪声,从而评估循环噪声的影响,并将检查结果发送到网络 通过使用模拟发送单元的功能。 结果,提供了一种能够在开始提供宽带通信服务之前自动收集与其连接的用户线路的各种特性的xDSL调制解调器。
    • 43. 发明申请
    • Motor control apparatus, and washing machine and drying machine using the same
    • 电机控制装置,洗衣机和烘干机使用相同
    • US20050104552A1
    • 2005-05-19
    • US10896009
    • 2004-07-22
    • Yasuhiro AraiHideki Nakata
    • Yasuhiro AraiHideki Nakata
    • H02P27/06D06F33/02H02P6/18H02P7/06H02P25/02
    • H02P25/024
    • A motor control apparatus includes an inverter circuit 2 for supplying driving power to a motor 3, motor current detector 4 for detecting current flowing through the motor 3, inverter controller 5E for controlling the inverter circuit 2 based on the output of the detector 4. The inverter controller 5E has a setting unit 6E for setting various command values to control motor driving status, and processing unit 8 for controlling the inverter circuit 2 based on the setting on the setting unit 6E. The setting unit 6E sets command value so that a load angle which is an angle between rotor axis and motor applied voltage is operated on the smaller side of the angle that provides the maximum output torque in the load angle-output torque characteristics.
    • 电动机控制装置包括用于向电动机3供给驱动电力的逆变器电路2,用于检测流过电动机3的电流的电动机电流检测器4,基于检测器4的输出来控制逆变器电路2的逆变器控制器5E。 逆变器控制器5E具有用于设定各种指令值以设定电机驱动状态的设定单元6E和基于设定单元6E上的设定来控制逆变器电路2的处理单元8.设定单元6E设定指令 使得在转矩轴和电动机施加电压之间的角度的负载角度在提供负载角 - 输出转矩特性中的最大输出转矩的角度的较小侧上操作。
    • 44. 发明授权
    • ADSL modem
    • ADSL调制解调器
    • US06778595B1
    • 2004-08-17
    • US09641124
    • 2000-08-16
    • Yasuhiro AraiKumiko MaruoMasato HoriTakashi SasakiAkira Oshima
    • Yasuhiro AraiKumiko MaruoMasato HoriTakashi SasakiAkira Oshima
    • H04M1100
    • H04M11/062
    • An ADSL modem connected to the telephone line is disclosed, which even in the case where a plurality of ADSL modems are connected to a single telephone line installed in a SOHO application or in the home of an ordinary user, a stable high-speed data communication can be realized without superposing the signals between the ADSL models or without causing any impedance mismatch. An ADSL band signal detector (11) detects whether the ADSL frequency band is occupied by another ADSL modem connected to the telephone line or not. Upon detection that the ADSL frequency is so occupied, a control unit (12, 13) suppresses the application of the signal energy to the ADSL frequency band.
    • 公开了连接到电话线的ADSL调制解调器,即使在将多个ADSL调制解调器连接到安装在SOHO应用中的单个电话线路或普通用户的家庭中的情况下,也可以使用稳定的高速数据通信 可以在不叠加ADSL模型之间的信号的情况下实现,也可以不引起任何阻抗失配。 ADSL频带信号检测器(11)检测ADSL频带是否被连接到电话线的另一个ADSL调制解调器所占用。 在检测到ADSL频率如此被占用时,控制单元(12,13)抑制对ADSL频带的信号能量的应用。
    • 46. 发明授权
    • Modem apparatus
    • 调制解调器
    • US6167121A
    • 2000-12-26
    • US98618
    • 1998-06-17
    • Yasuhiro Arai
    • Yasuhiro Arai
    • H04L29/10H04L27/00H04M11/00H04M11/06
    • H04L25/0266H04L27/0002H04M11/06
    • A modem apparatus performs modulation and demodulation between a telephone circuit and a terminal apparatus. The modem apparatus includes a modem circuit, and a codec circuit performing conversion between an analog signal and a digital signal. Capacitors are provided between the modem circuit and the codec circuit, a signal supplied from the terminal apparatus and a signal supplied from the codec circuit being supplied to the modem circuit, and a signal supplied from the telephone circuit and a signal supplied from the modem circuit being supplied to the codec circuit.
    • 调制解调器装置在电话电路和终端装置之间进行调制和解调。 调制解调器装置包括调制解调器电路和执行模拟信号和数字信号之间的转换的编解码电路。 在调制解调器电路和编解码电路之间提供电容器,从终端设备提供的信号和从编解码电路提供的信号提供给调制解调器电路,以及从电话电路提供的信号和从调制解调器电路提供的信号 被提供给编解码器电路。
    • 48. 发明授权
    • Method for arranging signal points in a quadrature amplitude
modulation/demodulation system
    • 用于在正交幅度调制/解调系统中布置信号点的方法
    • US5515400A
    • 1996-05-07
    • US80510
    • 1992-12-02
    • Yasuhiro Arai
    • Yasuhiro Arai
    • H04L27/34H04L5/12
    • H04L27/3411
    • In a signal point arranging method for use with a quadrature amplitude modulator/demodulator device in which a desired number of signal points are arranged on a rectangular plane, a plurality of grid points are first set such that they are symmetrical with respect to the rectangular coordinate axes of the rectangular plane and arranged at intervals of a unit distance. Next, a plurality of concentric circles with their center at the coordinate origin of the rectangular plane are set, each of the concentric circles having a radius equal to a distance between the coordinate origin and a grid point. Then, a desired number of signal points are arranged on points of intersection of the grid points, the concentric circles beginning with the circle smallest in radius and continuing with circles of increasing radius. As a result, each of the signal points can be arranged as close to the coordinate origin as possible, thus enabling the peak power of modulated signals to be minimized. In addition, since the distance between signal points can be held constant, the S/N characteristic does not vary with the signal points and a constant transmission error rate can be secured. As a result, a signal point arrangement is obtained which enables data transmission at minimum required power, reduces transmission error rate and minimizes the S/N characteristic.
    • 在与正交幅度调制器/解调器装置一起使用的信号点排列方法中,其中期望数量的信号点被布置在矩形平面上,首先设置多个网格点,使得它们相对于矩形坐标对称 矩形平面的轴线并以单位距离的间隔布置。 接下来,设置在矩形平面的坐标原点处具有中心的多个同心圆,每个同心圆具有等于坐标原点与网格点之间的距离的半径。 然后,将所需数量的信号点布置在网格点的交叉点上,以半径最小的圆形开始的同心圆并且继续增加半径的圆。 结果,每个信号点可以尽可能靠近坐标原点布置,从而使调制信号的峰值功率最小化。 此外,由于信号点之间的距离可以保持不变,所以S / N特性不随信号点变化,并且可以确保恒定的传输错误率。 结果,获得信号点布置,其使得能够以最小所需功率进行数据传输,降低传输错误率并使S / N特性最小化。
    • 50. 发明授权
    • MODEM communication system having training means and method for training
same
    • 具有训练手段和训练方法的MODEM通信系统
    • US4868850A
    • 1989-09-19
    • US870499
    • 1986-06-04
    • Takashi KakuYasuhiro Arai
    • Takashi KakuYasuhiro Arai
    • H04B3/10H04L7/027H04L7/04H04L25/03H04L27/01H04L27/38
    • H04L27/38H04L25/03133H04L7/027H04L2025/03783H04L7/046
    • A multipoint type MODEM communication system having a training device for adapting receiving parameters in a receiving MODEM to a characteristic of a telephone line connected to a sending MODEM in response to a training signal sent from the sending MODEM prior to the reception of data. The training signal includes a tone for gain control, a timing signal for pull-in synchronization, and at least two impulses for equalization and carrier phase control, which are superimposed on each other. A time between the first and the last impulses defines the characteristic of the telephone line which should be adjusted in the receiving MODEM.Additional guard impulses may be added prior to and/or after the impulses. A scramble signal also may be added after the impulses.In addition, a method for training the receiving MODEM is disclosed.
    • 一种多点式MODEM通信系统,具有训练装置,用于响应于在接收数据之前从发送MODEM发送的训练信号,将接收MODEM中的接收参数适应于连接到发送MODEM的电话线路的特性。 训练信号包括用于增益控制的音调,用于拉入同步的定时信号和用于均衡和载波相位控制的至少两个脉冲,它们彼此叠加。 第一个和最后一个脉冲之间的时间定义了在接收MODEM中应该调整的电话线的特性。 在脉冲之前和/或之后可以添加额外的保护脉冲。 在脉冲之后也可以加扰乱信号。 此外,公开了一种训练接收MODEM的方法。