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    • 1. 发明授权
    • D/A conversion circuit and liquid crystal display device
    • D / A转换电路和液晶显示装置
    • US06549196B1
    • 2003-04-15
    • US09401847
    • 1999-09-22
    • Takashi TaguchiTakeshi ShimaTetsuro Itakura
    • Takashi TaguchiTakeshi ShimaTetsuro Itakura
    • B09G500
    • H03M1/0872G09G3/3688G09G2310/027H03M1/765
    • A D/A conversion circuit which can perform D/A conversion at high speed and with high precision is disclosed. The D/A conversion circuit comprises an analog reference power supply, an output buffer, a multiplexer, a pre-buffer, and a current changeover switch. The pre-buffer operates with a power supply voltage different from that of the analog reference power supply, and outputs a voltage substantially equal to an output voltage of the analog reference power supply. For a predetermined period after logic of digital data changes, the output voltage of the pre-buffer is supplied to the output buffer, and an input parasitic capacitor of the output buffer is charged/discharged. After the predetermined period elapses, the output voltage of the analog reference power supply is supplied to the output buffer. Therefore, a charging/discharging current of the input parasitic capacitor does not flow through the analog reference power supply, and fluctuation of the output voltage of the analog reference power supply can be suppressed.
    • 公开了一种可以高速,高精度地执行D / A转换的D / A转换电路。 D / A转换电路包括模拟参考电源,输出缓冲器,多路复用器,预缓冲器和电流切换开关。 预缓冲器以与模拟基准电源不同的电源电压工作,并输出基本上等于模拟基准电源的输出电压的电压。 在数字数据的逻辑变化之后的预定时间内,预缓冲器的输出电压被提供给输出缓冲器,并且输出缓冲器的输入寄生电容器被充电/放电。 经过预定时间后,模拟基准电源的输出电压被提供给输出缓冲器。 因此,输入的寄生电容器的充电/放电电流不会流过模拟基准电源,并且可以抑制模拟基准电源的输出电压的波动。
    • 6. 发明授权
    • Sample-and-hold circuit device
    • 采样保持电路装置
    • US5376841A
    • 1994-12-27
    • US143127
    • 1993-10-29
    • Tetsuro ItakuraTakeshi Shima
    • Tetsuro ItakuraTakeshi Shima
    • G09G3/36G11C27/02H03K5/153H03K5/24
    • G11C27/026G11C27/024G09G2310/0289G09G3/3688
    • A sample-and-hold circuit device which includes a plurality of sample-and-hold circuits and a comparator/amplifier for comparing a reference potential with an output signal which is output from the plurality of sample-and-hold circuits so as to amplify a difference between these two signals. An output of the comparator/amplifier is fed back to respective control terminals of the different sample-and-hold circuits, each being provided as a level control signal. In another embodiment, a plurality of adding circuits are provided for adding the outputs of the plurality of sample-and-hold circuits and then comparing this value with an arbitrary reference potential, whereby a difference between the sum value and the arbitrary reference potential is amplified and fed back to the control terminals of the sample-and-hold circuits.
    • 一种采样保持电路装置,包括多个采样保持电路和用于将参考电位与从多个采样和保持电路输出的输出信号进行比较的比较器/放大器,以便放大 这两个信号之间的区别。 比较器/放大器的输出反馈到不同取样和保持电路的各个控制端,每个控制端被提供为电平控制信号。 在另一个实施例中,提供多个加法电路用于将多个采样和保持电路的输出相加,然后将该值与任意的参考电位进行比较,从而放大和值和任意参考电位之间的差值 并反馈到采样保持电路的控制端子。
    • 8. 发明授权
    • Liquid crystal display device, device for controlling drive of liquid crystal display device and D/A converting semiconductor device
    • 液晶显示装置,用于控制液晶显示装置的驱动的装置和D / A转换半导体装置
    • US06191779B1
    • 2001-02-20
    • US09114195
    • 1998-07-13
    • Takashi TaguchiTetsuro Itakura
    • Takashi TaguchiTetsuro Itakura
    • G09G500
    • G09G3/2011G09G3/3614G09G3/3648G09G2310/0289G09G2310/0297G09G2330/023
    • A liquid crystal display device significantly reduces power consumption and causes no signal delay when a liquid crystal panel performs an inversion-type drive. The liquid crystal display device comprises a digital controller, a level shift circuit, a digital-to-analog (D/A) converter, a liquid crystal panel, and a plurality of capacitors. In the D/A converter, a charging control circuit is provided corresponding to each capacitor. The charging control circuit comprises a switch, a diode and an inverter, the switch and the diode being coupled in parallel. The switch is turned on and off in response to a switching signal from the digital controller. The switch is changed to a turning- on state during a blanking period after one horizontal displaying. Upon turning-on of the switch, the capacitors are charged. Digital pixel data outputted from the digital controller undergoes a level changing depending on a voltage across the electrodes of the capacitors, according to a charge conservation.
    • 液晶显示装置显着地降低功耗,并且当液晶面板进行反转型驱动时不产生信号延迟。 液晶显示装置包括数字控制器,电平移位电路,数模(D / A)转换器,液晶面板和多个电容器。 在D / A转换器中,对应于每个电容器提供充电控制电路。 充电控制电路包括开关,二极管和反相器,开关和二极管并联耦合。 响应于来自数字控制器的切换信号,开关被打开和关闭。 在一个水平显示之后,在消隐期间,开关变为开启状态。 在开关接通时,电容器被充电。 根据电荷保持,从数字控制器输出的数字像素数据根据电容器的电极两端的电压进行电平变化。
    • 9. 发明授权
    • Assembled battery system
    • 组装电池系统
    • US08593111B2
    • 2013-11-26
    • US12559072
    • 2009-09-14
    • Yoshinao TatebayashiTetsuro ItakuraNobuo ShibuyaNorio Takami
    • Yoshinao TatebayashiTetsuro ItakuraNobuo ShibuyaNorio Takami
    • H02J7/00
    • H02J7/0021H01M10/42H02J7/0031
    • 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.
    • 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。
    • 10. 发明授权
    • DC to DC converter
    • 直流到直流转换器
    • US08350547B2
    • 2013-01-08
    • US12878271
    • 2010-09-09
    • Takeshi UenoTetsuro Itakura
    • Takeshi UenoTetsuro Itakura
    • G05F1/00
    • H02M3/1563
    • 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.
    • 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。