公开(公告)号：US20050220217A1

公开(公告)日：2005-10-06

申请号：US11017076

申请日：2004-12-21

申请人： Taizo Yamawaki ,  Masahiro Ito ,  Masumi Kasahara ,  Hiroaki Matsui

发明人： Taizo Yamawaki ,  Masahiro Ito ,  Masumi Kasahara ,  Hiroaki Matsui

IPC分类号： H03C5/00 ,  H03G3/30 ,  H04B1/04 ,  H04K1/02 ,  H04L27/00 ,  H04L27/12 ,  H04L27/20

CPC分类号： H04L27/0008 ,  H03F1/02 ,  H03F3/24 ,  H04B2001/045

摘要： A transmitter that can reduce noise without using an SAW filter whose IC integration is hard, and copes with two modulation formats of constant envelope modulation and non-constant envelope modulation, and a downsized and low-cost wireless communication apparatus that uses the transmitter are provided. The transmitter includes a quadrature modulator that modulates an input signal by quadrature modulation, a first amplifier that amplifies a modulation signal outputted by the quadrature modulator, and a second amplifier that amplifies an output signal of the first amplifier. The first amplifier operates as a limiter when the modulation format is the constant envelope modulation, and performs linear operation when the modulation format is the non-constant envelope modulation.

摘要翻译： 提供一种能够在不使用集成硬件的SAW滤波器的情况下降低噪声的发射机，并且应用恒定包络调制和非恒定包络调制的两种调制格式，以及使用发射机的小型化和低成本的无线通信装置 。 发射机包括通过正交调制来调制输入信号的正交调制器，放大由正交调制器输出的调制信号的第一放大器和放大第一放大器的输出信号的第二放大器。 当调制格式为恒定包络调制时，第一放大器用作限幅器，并且当调制格式是非恒定包络调制时，执行线性运算。

公开(公告)号：US07515648B2

公开(公告)日：2009-04-07

申请号：US11017076

申请日：2004-12-21

申请人： Taizo Yamawaki ,  Masahiro Ito ,  Masumi Kasahara ,  Hiroaki Matsui

发明人： Taizo Yamawaki ,  Masahiro Ito ,  Masumi Kasahara ,  Hiroaki Matsui

IPC分类号： H04K1/02

CPC分类号： H04L27/0008 ,  H03F1/02 ,  H03F3/24 ,  H04B2001/045

摘要： A transmitter that can reduce noise without using an SAW filter whose IC integration is hard, and copes with two modulation formats of constant envelope modulation and non-constant envelope modulation, and a downsized and low-cost wireless communication apparatus that uses the transmitter are provided. The transmitter includes a quadrature modulator that modulates an input signal by quadrature modulation, a first amplifier that amplifies a modulation signal outputted by the quadrature modulator, and a second amplifier that amplifies an output signal of the first amplifier. The first amplifier operates as a limiter when the modulation format is the constant envelope modulation, and performs linear operation when the modulation format is the non-constant envelope modulation.

摘要翻译： 提供一种能够在不使用集成硬件的SAW滤波器的情况下降低噪声的发射机，并且应用恒定包络调制和非恒定包络调制的两种调制格式，以及使用发射机的小型化和低成本的无线通信装置 。 发射机包括通过正交调制来调制输入信号的正交调制器，放大由正交调制器输出的调制信号的第一放大器和放大第一放大器的输出信号的第二放大器。 当调制格式为恒定包络调制时，第一放大器用作限幅器，并且当调制格式是非恒定包络调制时，执行线性运算。

公开(公告)号：US20050136847A1

公开(公告)日：2005-06-23

申请号：US11011153

申请日：2004-12-15

申请人： Hiroaki Matsui ,  Taizo Yamawaki ,  Masahiro Ito ,  Masakatsu Yokota

发明人： Hiroaki Matsui ,  Taizo Yamawaki ,  Masahiro Ito ,  Masakatsu Yokota

IPC分类号： H03G11/00 ,  H03F1/32 ,  H03F1/52 ,  H03F3/195 ,  H03F3/45 ,  H03F3/72 ,  H03G3/10 ,  H03G3/30 ,  H04B1/44

CPC分类号： H03F3/45286 ,  H03F1/3211 ,  H03F1/52 ,  H03F3/195 ,  H03F3/72 ,  H03F2200/09 ,  H03F2200/111 ,  H03F2203/45638 ,  H03F2203/45704 ,  H03F2203/45706 ,  H03G3/3042

摘要： A communication semiconductor integrated circuit (high frequency IC) that has a function of differentially-singly converts and outputs a transmitted signal suppressing deterioration of a harmonic suppression characteristic and enables miniaturization and an electronic component (high frequency module) that mounts the communication semiconductor integrated circuit are provided. In the communication semiconductor integrated circuit (high frequency IC) having a limiter that amplifies a modulated and up-converted transmitted signal and supplies a power amplifier with the signal, an unbalanced reduction means having, for example, differential MOS transistors is provided in collectors or drains of differential transistors that construct the limiter to output pins and continue to apply a current to the output pins and reduces the impedance of the transistor on an off side even when one of the transistors enters an off state in accordance with an input signal in parallel to the transistor.

摘要翻译： 具有差分单变换功能的通信用半导体集成电路（高频IC），输出抑制谐波抑制特性的劣化的发送信号，能够实现小型化，以及安装通信半导体集成电路的电子部件（高频模块） 被提供。 在具有放大经调制和上变频的发送信号并向功率放大器供给该信号的限幅器的通信半导体集成电路（高频IC）中，具有例如差分MOS晶体管的不平衡减小装置设置在收集器或 差分晶体管的漏极构成限制器以输出引脚并且继续向输出引脚施加电流，并且即使当晶体管中的一个根据并行的输入信号进入截止状态时也减小了晶体管在截止侧的阻抗 到晶体管。

公开(公告)号：US20060135093A1

公开(公告)日：2006-06-22

申请号：US11304914

申请日：2005-12-16

申请人： Masahiro Ito ,  Taizo Yamawaki ,  Yoshiaki Harasawa

发明人： Masahiro Ito ,  Taizo Yamawaki ,  Yoshiaki Harasawa

IPC分类号： H01Q11/12

CPC分类号： H04B1/0475 ,  H03F1/0205 ,  H03F1/0261 ,  H03F2200/294

摘要： A transmitter employing variable gain amplifiers and operating with both constant and nonconstant envelope modulation systems is contrived to suppress variation in the transmitting power when constant envelope modulation is performed. The transmitter comprises a PM loop, an AM loop, and a variable gain amplifier which is shared by the PM loop and the AM loop and combines phase information that the PM loop outputs and envelope information that the AM loop outputs by gain control. The variable gain amplifier comprises a variable gain amplifier body having a supply voltage terminal and a bias current detection terminal for extracting a bias current corresponding to a gain, wherein the gain changes with a change in the potential of the supply voltage terminal, and a bias control block connected to the supply voltage terminal and the bias current detection terminal. Thereby, a bias control loop is formed to control the bias current so that the gain in the case of constant envelope modulation becomes a predetermined value.

公开(公告)号：US20080113625A1

公开(公告)日：2008-05-15

申请号：US11940733

申请日：2007-11-15

申请人： Koji Maeda ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Masahiro Ito

发明人： Koji Maeda ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Masahiro Ito

IPC分类号： H04B17/00

CPC分类号： H04B1/30

摘要： When generating an RF test signal for mismatch calibration for receiver in order to calibrate reception mismatch of an I-phase signal and a Q-phase signal that are output from demodulated signal processing circuits coupled to mixers for receiving, a Tx VCO avoids covering the higher frequency of an RF received signal in an FDD system. An RF test signal generating unit generates, in a calibration mode of a mismatch calibration for receiver circuit, the RF test signal by using an oscillation output signal of the Tx VCO and other circuits, and supplies the same to the mixers for receiving via a switch. The RF test signal has a frequency within an RF reception frequency band that is higher than that of an RF transmission signal with the maximum frequency band of multiband radio frequency communications. By switching the switch in a reception mode, an output of a low-noise amplifier that amplifies the RF received signal received by an antenna is supplied to each of the mixers for receiving.

摘要翻译： 为了校准从耦合到混频器进行接收的解调信号处理电路输出的I相信号和Q相信号的接收不匹配，为接收机生成用于失配校准的RF测试信号时，Tx VCO避免覆盖较高的 FDD系统中RF接收信号的频率。 RF测试信号产生单元通过使用Tx VCO和其它电路的振荡输出信号在接收机电路的不匹配校准的校准模式中产生RF测试信号，并将其提供给用于经由开关接收的混频器 。 RF测试信号具有比具有多频带无线电频率通信的最大频带的RF传输信号的RF接收频带内的频率。 通过在接收模式下切换开关，将放大天线接收到的RF接收信号的低噪声放大器的输出提供给每个混频器进行接收。

公开(公告)号：US07996003B2

公开(公告)日：2011-08-09

申请号：US11940733

申请日：2007-11-15

申请人： Koji Maeda ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Masahiro Ito

发明人： Koji Maeda ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Masahiro Ito

IPC分类号： H04W24/00 ,  H04B17/00

CPC分类号： H04B1/30

摘要： When generating an RF test signal for mismatch calibration for receiver in order to calibrate reception mismatch of an I-phase signal and a Q-phase signal that are output from demodulated signal processing circuits coupled to mixers for receiving, a Tx VCO avoids covering the higher frequency of an RF received signal in an FDD system. An RF test signal generating unit generates, in a calibration mode of a mismatch calibration for receiver circuit, the RF test signal by using an oscillation output signal of the Tx VCO and other circuits, and supplies the same to the mixers for receiving via a switch. The RF test signal has a frequency within an RF reception frequency band that is higher than that of an RF transmission signal with the maximum frequency band of multiband radio frequency communications. By switching the switch in a reception mode, an output of a low-noise amplifier that amplifies the RF received signal received by an antenna is supplied to each of the mixers for receiving.

摘要翻译： 为了校准从耦合到混频器进行接收的解调信号处理电路输出的I相信号和Q相信号的接收不匹配，为接收机生成用于失配校准的RF测试信号时，Tx VCO避免覆盖较高的 FDD系统中RF接收信号的频率。 RF测试信号产生单元通过使用Tx VCO和其它电路的振荡输出信号在接收机电路的不匹配校准的校准模式中产生RF测试信号，并将其提供给用于经由开关接收的混频器 。 RF测试信号具有比具有多频带无线电频率通信的最大频带的RF传输信号的RF接收频带内的频率。 通过在接收模式下切换开关，将放大天线接收到的RF接收信号的低噪声放大器的输出提供给每个混频器进行接收。

公开(公告)号：US07519337B2

公开(公告)日：2009-04-14

申请号：US11304914

申请日：2005-12-16

申请人： Masahiro Ito ,  Taizo Yamawaki ,  Yoshiaki Harasawa

发明人： Masahiro Ito ,  Taizo Yamawaki ,  Yoshiaki Harasawa

IPC分类号： H01Q11/12

CPC分类号： H04B1/0475 ,  H03F1/0205 ,  H03F1/0261 ,  H03F2200/294

摘要： A transmitter employing variable gain amplifiers and operating with both constant and nonconstant envelope modulation systems is contrived to suppress variation in the transmitting power when constant envelope modulation is performed. The transmitter comprises a PM loop, an AM loop, and a variable gain amplifier which is shared by the PM loop and the AM loop and combines phase information that the PM loop outputs and envelope information that the AM loop outputs by gain control. The variable gain amplifier comprises a variable gain amplifier body having a supply voltage terminal and a bias current detection terminal for extracting a bias current corresponding to a gain, wherein the gain changes with a change in the potential of the supply voltage terminal, and a bias control block connected to the supply voltage terminal and the bias current detection terminal. Thereby, a bias control loop is formed to control the bias current so that the gain in the case of constant envelope modulation becomes a predetermined value.

摘要翻译： 采用可变增益放大器并且使用恒定和非恒定包络调制系统进行操作的发射机被设计成在执行恒定包络调制时抑制发射功率的变化。 发射机包括由PM环路和AM环路共享的PM环路，AM环路和可变增益放大器，并组合PM环路输出的相位信息和AM环路通过增益控制输出的包络信息。 可变增益放大器包括具有电源电压端子的可变增益放大器体和用于提取与增益相对应的偏置电流的偏置电流检测端子，其中增益随着电源电压端子的电位变化而变化，偏置 控制块连接到电源电压端子和偏置电流检测端子。 由此，形成偏置控制环以控制偏置电流，使得在恒定包络调制的情况下的增益变为预定值。

公开(公告)号：US08581128B2

公开(公告)日：2013-11-12

申请号：US12953548

申请日：2010-11-24

申请人： Masahiro Ito ,  Katumi Yositani ,  Katsuya Uruma

发明人： Masahiro Ito ,  Katumi Yositani ,  Katsuya Uruma

IPC分类号： H01H3/20 ,  H01H17/00

CPC分类号： H01H1/66 ,  H01H1/20 ,  H01H71/526

摘要： A breaker includes a contact unit provided in an airtight container. The contact unit has fixed contact points and a movable contact point which selectively contacts with the fixed contact points. Further, the breaker include a movable shaft having a part projecting outward from the airtight container, for moving the movable contact point to and from the fixed contact points, and a metal member for ensuring airtightness of the airtight container. The metal member has one end fixed to the airtight container and the other end fixed to the movable shaft and is extensible and contractible in accordance with the movement of the movable shaft. Moreover, the breaker includes a lever unit for moving the movable shaft between a closed position where the movable contact point is in contact with the fixed contact points and an open position where the movable contact point is separated from the fixed contact points.

摘要翻译： 断路器包括设置在气密容器中的接触单元。 接触单元具有固定接触点和与固定接触点选择性接触的可动接触点。 此外，断路器包括可移动轴，其具有从气密容器向外突出的部分，用于将活动触点移动到固定触点和从固定触点移动;以及金属构件，用于确保气密容器的气密性。 金属构件的一端固定在气密容器上，另一端固定在可动轴上，并根据活动轴的移动而伸缩。 此外，断路器包括用于在可动触点与固定触点接触的关闭位置和可动触点与固定触点分离的打开位置之间移动可动轴的杠杆单元。

公开(公告)号：US08525463B2

公开(公告)日：2013-09-03

申请号：US12720077

申请日：2010-03-09

申请人： Eiichi Hioka ,  Takashi Nakagawa ,  Masahiro Ito

发明人： Eiichi Hioka ,  Takashi Nakagawa ,  Masahiro Ito

IPC分类号： H02H7/097 ,  F02D41/22 ,  F01L1/34

CPC分类号： F02D41/222 ,  F02D41/009 ,  Y02T10/40

摘要： A malfunction determination device for a motor control system, outputs a position signal that indicates a moved position of a movable member of a motor and a direction signal that indicates a movement direction of the movable member. The malfunction determination device determines a malfunction has occurred if a relationship between the position signal and the direction signal differs from that when the motor control system is operating normally. The malfunction determination device outputs a pulse signal that varies periodically along with variations in the moved position of the movable member as the position signal; outputs a periodic pulse signal in the same phase with the position signal as the direction signal if the movable member is moving in one direction; and outputs a periodic pulse signal in an opposite phase to the position signal as the direction signal if the movable member is moving in the other direction.

摘要翻译： 一种电动机控制系统的故障判定装置，输出表示电动机的可动部件的移动位置的位置信号和表示可动部件的移动方向的方向信号。 如果位置信号和方向信号之间的关系不同于电动机控制系统正常运行时故障确定装置确定发生故障。 故障确定装置输出随着可移动部件的移动位置的变化而周期性变化的脉冲信号作为位置信号; 如果可移动部件沿一个方向移动，则以相对于作为方向信号的位置信号以相同相位输出周期性脉冲信号; 并且如果可移动部件沿另一个方向移动，则以与方向信号相反的相位相输出周期性脉冲信号。

公开(公告)号：US08514154B2

公开(公告)日：2013-08-20

申请号：US12668150

申请日：2008-07-08

申请人： Yasuo Inoue ,  Masahiro Ito

发明人： Yasuo Inoue ,  Masahiro Ito

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/006 ,  G09G3/2011 ,  G09G3/2044 ,  G09G3/2077 ,  G09G3/3266 ,  G09G2300/0417 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2320/0257 ,  G09G2320/0276 ,  G09G2320/043 ,  G09G2320/0626 ,  G09G2320/0666 ,  G09G2320/103 ,  G09G2360/16

摘要： Provided is a display device including a display unit having luminescence elements that individually becomes luminous depending on a current amount. The luminescence elements are arranged in a matrix pattern. The display device comprises a luminescence amount regulator for setting a reference duty for regulating a luminescence amount per unit time for each of the luminescence elements, according to picture information of an input picture signal, and also comprises an adjuster for adjusting, based on the reference duty, an effective duty regulating a luminous time for which the luminescence elements become luminous within a unit time, so that the effective duty is within a predetermined range, and for adjusting a gain of the picture signal, so that a luminescence amount regulated with the effective duty and with the gain of the picture signal equals to the luminescence amount regulated with the reference duty.

摘要翻译： 提供一种显示装置，包括具有根据电流量而单独发光的发光元件的显示单元。 发光元件以矩阵图案排列。 显示装置包括发光量调节器，用于根据输入图像信号的图像信息设置用于调节每个发光元件的每单位时间的发光量的参考占空比，并且还包括调整器，用于基于参考 负责调节发光元件在单位时间内发光的发光时间的有效负荷，使得有效占空比在预定范围内，并且用于调整图像信号的增益，使得通过 有效占空比和图像信号的增益等于基准占空比调节的发光量。