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    Receiver having DC offset decreasing function and communication system using the same
    3.
    发明授权
    Receiver having DC offset decreasing function and communication system using the same 失效
    具有DC偏移减小功能的接收机和使用该功能的通信系统

    公开(公告)号：US06498929B1

    公开(公告)日：2002-12-24

    申请号：US08880679

    申请日：1997-06-23

    申请人： Hiroshi Tsurumi ,  Hiroshi Yoshida ,  Tetsuro Itakura ,  Takafumi Yamaji ,  Akira Yasuda ,  Takashi Ueno ,  Hiroshi Tanimoto ,  Ryuichi Fujimoto ,  Hiroshi Horiguchi

    发明人： Hiroshi Tsurumi ,  Hiroshi Yoshida ,  Tetsuro Itakura ,  Takafumi Yamaji ,  Akira Yasuda ,  Takashi Ueno ,  Hiroshi Tanimoto ,  Ryuichi Fujimoto ,  Hiroshi Horiguchi

    IPC分类号： H04B716

    CPC分类号： H03D3/008 ,  H03G3/3052 ,  H04B1/30

    摘要： A receiver having a function of a direct current offset, and including a receiving section for receiving a radio frequency signal, an analog signal processing section for amplifying, band-converting and frequency-converting an analog signal inputted from the receiving section, and an AD converting section for converting an output of the analog signal processing section from an analog signal to a digital signal. Also included is a digital signal processing section for processing the digital signal converted by the DC converting section. The receiver further includes an offset detecting element, provided in the digital signal processing section, for detecting a direct current offset signal produced in the receiving section or a frequency converting section, an offset holding element, provided in the digital signal processing section, for holding the direct current offset signal detected by the offset detecting element, a DA converting section for converting the direct current offset signal detected by the digital signal processing section into an analog signal, and a first offset correcting element, provided in the analog signal processing section, for correcting the analog signal on the basis of the direct current offset signal converted by the DA converting section into the analog signal.

    摘要翻译： 具有直流偏移功能的接收机，包括用于接收射频信号的接收部分，用于放大从接收部分输入的模拟信号的频带转换和频率转换的模拟信号处理部分，以及AD 转换部分，用于将模拟信号处理部分的输出从模拟信号转换成数字信号。 还包括用于处理由DC转换部分转换的数字信号的数字信号处理部分。 接收机还包括偏移检测元件，设置在数字信号处理部分中，用于检测在数字信号处理部分中设置的接收部分或频率转换部分产生的直流偏移信号，偏移保持元件，用于保持 由偏移检测元件检测的直流偏移信号，用于将由数字信号处理部分检测的直流偏移信号转换为模拟信号的DA转换部分和设置在模拟信号处理部分中的第一偏移校正元件， 用于基于由DA转换部分转换成的模拟信号的直流偏移信号来校正模拟信号。

    Frequency converter and radio receiver using same
    4.
    发明授权
    Frequency converter and radio receiver using same 失效
    变频器和无线电接收机使用相同

    公开(公告)号：US5995819A

    公开(公告)日：1999-11-30

    申请号：US755468

    申请日：1996-11-22

    申请人： Takafumi Yamaji ,  Osamu Watanabe ,  Hiroshi Tanimoto ,  Tetsuro Itakura ,  Shoji Otaka ,  Ryuichi Fujimoto

    发明人： Takafumi Yamaji ,  Osamu Watanabe ,  Hiroshi Tanimoto ,  Tetsuro Itakura ,  Shoji Otaka ,  Ryuichi Fujimoto

    IPC分类号： H03D7/00 ,  H03D7/14 ,  H04B1/00

    CPC分类号： H03F3/45085 ,  H03D7/00 ,  H03D7/1408 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1475 ,  H03D2200/0007 ,  H03D2200/0025 ,  H03D2200/0047 ,  H03D2200/009

    摘要： A frequency converter includes: a signal synthesizer element for inputting first and second input signals to synthesize these signals and for outputting a synthesized signal, from which noises even times as large as the frequency of the second input signal are removed; an amplitude limitation amplifier element, composed of a differential amplifier circuit, for amplifying the synthesized signal outputted from the signal synthesizer element to output an amplified signal having a constant amplitude; and a filter for inputting the amplified signal outputted from the amplitude limitation amplifier element, to remove an unnecessary signal component to produce an output a baseband signal including only a desired signal component. In addition, a radio receiver using the frequency converter of such a construction is designed to input the output of a local oscillator to a variable attenuator or a variable gain amplifier, to input the output of the variable attenuator or the variable gain amplifier as the first input signal to the frequency converter so as to perform the gain control. Thus, not only is self-mixing, a common problem in direct conversion receivers, prevented, but also, because a smaller local oscillation driving signal is required, power consumption is significantly reduced.

    摘要翻译： 一种频率转换器，包括：信号合成器元件，用于输入第一和第二输入信号以合成这些信号并输出​​合成信号，从该信号合成信号除去除了第二输入信号的频率以上的噪声; 幅度限制放大器元件，由差分放大电路组成，用于放大从信号合成器元件输出的合成信号，以输出具有恒定幅度的放大信号; 以及滤波器，用于输入从幅度限制放大器元件输出的放大信号，以去除不必要的信号分量以产生仅包括所需信号分量的基带信号。 此外，使用这种结构的变频器的无线电接收机被设计成将本地振荡器的输出输入到可变衰减器或可变增益放大器，以将可变衰减器或可变增益放大器的输出作为第一 输入到变频器的信号，以进行增益控制。 因此，不仅自发混合，直接转换接收器中的常见问题被阻止，而且由于需要较小的本地振荡驱动信号，所以功耗显着降低。

    Assembled battery system
    8.
    发明授权
    Assembled battery system 有权
    组装电池系统

    公开(公告)号：US08593111B2

    公开(公告)日：2013-11-26

    申请号：US12559072

    申请日：2009-09-14

    申请人： Yoshinao Tatebayashi ,  Tetsuro Itakura ,  Nobuo Shibuya ,  Norio Takami

    发明人： Yoshinao Tatebayashi ,  Tetsuro Itakura ,  Nobuo Shibuya ,  Norio Takami

    IPC分类号： H02J7/00

    CPC分类号： H02J7/0021 ,  H01M10/42 ,  H02J7/0031

    摘要： In an assembled battery system, parallel battery blocks are connected in series. Each of the battery blocks includes battery unit modules connected in parallel, and each of the modules includes a battery unit and a fuse connected in series. The battery block is provided with a common connection line connected to a fuse monitoring module, and MOS-FETs each having a gate, source and drain, wherein the fuse is connected between the gate and source, and the drain is connected to the connection line. The FET is turned on and a voltage is applied to the connection line through the FET from the battery unit, when the fuse is blown out. Thus, the fuse monitoring module can detects the blowout of the fuse, and a control module can turn off a control switch to stop charging/discharging of the assembled battery in accordance with the control signal from the fuse monitoring module.

    摘要翻译： 在组合电池系统中，并联电池块串联连接。 每个电池块包括并联连接的电池单元模块，并且每个模块包括串联连接的电池单元和熔丝。 电池块设有连接到保险丝监视模块的公共连接线，以及各自具有栅极，源极和漏极的MOS-FET，其中，熔丝连接在栅极和源极之间，漏极连接到连接线 。 当保险丝熔断时，FET被接通并且通过FET从电池单元向连接线施加电压。 因此，熔丝监视模块可以检测熔丝的喷出，并且控制模块可以根据来自熔丝监视模块的控制信号关闭控制开关以停止组电池的充电/放电。

    DC to DC converter
    9.
    发明授权
    DC to DC converter 有权
    直流到直流转换器

    公开(公告)号：US08350547B2

    公开(公告)日：2013-01-08

    申请号：US12878271

    申请日：2010-09-09

    申请人： Takeshi Ueno ,  Tetsuro Itakura

    发明人： Takeshi Ueno ,  Tetsuro Itakura

    IPC分类号： G05F1/00

    CPC分类号： H02M3/1563

    摘要： A DC to DC converter includes an input terminal, an output terminal, first and second switches, an inductor, a smoothing unit, a first impedance element, a first resistor element, an operational amplifier and a control unit. The first switch is connected to the input terminal. The second switch is connected to the first switch and a ground terminal. The inductor is connected to the first switch and the output terminal. The smoothing unit is connected to the inductor and the ground terminal. The first impedance element is connected to the smoothing unit. The first resistor element is connected in series with the first impedance element. The operational amplifier is connected to the first impedance element. Reference voltage is added to the operational amplifier. The control unit controls the first and second switches according to a control signal outputted from the operational amplifier.

    摘要翻译： DC-DC转换器包括输入端子，输出端子，第一和第二开关，电感器，平滑单元，第一阻抗元件，第一电阻元件，运算放大器和控制单元。 第一个开关连接到输入端。 第二开关连接到第一开关和接地端子。 电感器连接到第一开关和输出端子。 平滑单元连接到电感器和接地端子。 第一阻抗元件连接到平滑单元。 第一电阻元件与第一阻抗元件串联连接。 运算放大器连接到第一阻抗元件。 参考电压加到运算放大器上。 控制单元根据从运算放大器输出的控制信号来控制第一和第二开关。

    VOLTAGE OUTPUT CIRCUIT, CONNECTOR MODULE, AND ACTIVE CABLE
    10.
    发明申请
    VOLTAGE OUTPUT CIRCUIT, CONNECTOR MODULE, AND ACTIVE CABLE 有权
    电压输出电路，连接器模块和有源电缆

    公开(公告)号：US20120241599A1

    公开(公告)日：2012-09-27

    申请号：US13308646

    申请日：2011-12-01

    申请人： Hiroshi Uemura ,  Ippei Akita ,  Tetsuro Itakura ,  Hideto Furuyama

    发明人： Hiroshi Uemura ,  Ippei Akita ,  Tetsuro Itakura ,  Hideto Furuyama

    IPC分类号： H01J40/12 ,  H03L5/00

    CPC分类号： H04B10/69 ,  H04B10/25

    摘要： According to one embodiment, a circuit comprises a first resistor configured to have one end to which a first voltage is input and the other end which outputs a second voltage and a first amplifier configured to have an inverting input connected to the other end of the first resistor and a noninverting input to which a third voltage is input. The circuit further comprises a first capacitor configured to have one end to which an output of the first amplifier is input and the other end to which the other end of the first resistor is connected. An output of the first amplifier or an output of a second amplifier connected to the other end of the first resistor is a fourth voltage. In the circuit, the first resistor and a mirror capacitance composed of the first capacitor and the first amplifier constitute a low-pass filter.

    摘要翻译： 根据一个实施例，电路包括第一电阻器，其被配置为具有输入第一电压的一端和输出第二电压的另一端和配置成具有连接到第一电压的另一端的反相输入的第一放大器 电阻器和输入第三电压的同相输入端。 电路还包括第一电容器，其被配置为具有输入第一放大器的输出的一端和第一电阻器的另一端连接到的另一端。 连接到第一电阻器的另一端的第一放大器的输出或第二放大器的输出是第四电压。 在该电路中，由第一电容器和第一放大器组成的第一电阻器和反射镜电容器构成低通滤波器。