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1. 发明授权

US06549196B1 D/A conversion circuit and liquid crystal display device 失效
标题翻译： D / A转换电路和液晶显示装置
公开(公告)号：US06549196B1
公开(公告)日：2003-04-15
申请号：US09401847
申请日：1999-09-22
申请人： Takashi Taguchi , Takeshi Shima , Tetsuro Itakura
发明人： Takashi Taguchi , Takeshi Shima , Tetsuro Itakura
IPC分类号： B09G500
CPC分类号： H03M1/0872 , G09G3/3688 , G09G2310/027 , H03M1/765
摘要： 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.
摘要翻译：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。

2. 发明授权

US06664941B2 Amplifier circuit and liquid-crystal display unit using the same 失效
标题翻译：放大电路和液晶显示单元使用相同
公开(公告)号：US06664941B2
公开(公告)日：2003-12-16
申请号：US10189452
申请日：2002-07-08
申请人： Tetsuro Itakura , Takeshi Shima
发明人： Tetsuro Itakura , Takeshi Shima
IPC分类号： G09G336
CPC分类号： H03F3/303 , G09G3/3688 , H03F3/3023
摘要： An amplifier circuit including an input stage and an output stage which are cascade-connected between a signal input terminal to which an input signal is input and a signal output terminal to which a capacitive load is connected, and which includes at least an input amplification stage and an output amplification stage, and a resistor circuit including at least a resistor inserted between the output terminal of the output amplification stage and the signal output terminal.
摘要翻译：一种放大器电路，包括输入级和输出级，级联连接在输入输入信号的信号输入端与连接有电容性负载的信号输出端之间，并且至少包括输入放大级和输出放大级，以及至少包括插入在输出放大级的输出端子与信号输出端子之间的电阻器的电阻电路。

3. 发明授权

US5623279A Capacitive load driving circuit including input selection circuit and liquid crystal display device using the driving circuit 失效
标题翻译：电容负载驱动电路包括输入选择电路和使用驱动电路的液晶显示装置
公开(公告)号：US5623279A
公开(公告)日：1997-04-22
申请号：US304544
申请日：1994-09-12
申请人： Tetsuro Itakura , Takeshi Shima
发明人： Tetsuro Itakura , Takeshi Shima
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36 , G09G3/34
CPC分类号： G09G3/2011 , G09G3/3688 , G09G2310/0291 , G09G2310/0297
摘要： A capacitative load driving circuit is provided in a liquid crystal display device and has an input selection circuit having a wide and effective voltage range of an input signal. The driving circuit changes over through source or emitter followers formed by two types of conductivity, for detecting as to whether or not a potential of the input signal is in an input voltage range of a differential amplifier circuit constituting a voltage follower after selecting at least one input signal through any of source or emitter followers.
摘要翻译：电容负载驱动电路设置在液晶显示装置中，并且具有输入选择电路，其具有输入信号的宽且有效的电压范围。驱动电路通过由两种导电类型形成的源极或发射极跟随器而改变，用于检测输入信号的电位是否在构成电压跟随器的差分放大器电路的输入电压范围内，在选择至少一个通过任何源或发射体跟随器输入信号。

4. 发明授权

US06480178B1 Amplifier circuit and liquid-crystal display unit using the same 有权
标题翻译：放大器电路和液晶显示单元使用相同
公开(公告)号：US06480178B1
公开(公告)日：2002-11-12
申请号：US09128414
申请日：1998-08-04
申请人： Tetsuro Itakura , Takeshi Shima
发明人： Tetsuro Itakura , Takeshi Shima
IPC分类号： G09G336
CPC分类号： H03F3/303 , G09G3/3688 , H03F3/3023
摘要： An amplifier circuit comprising an input stage and an output stage which are cascade-connected between a signal input terminal to which an input signal is input and a signal output terminal to which a capacitive load is connected and which includes at least an input amplification stage and an output amplification stage, and a resistor circuit including at least a resistor inserted between the output terminal of the output amplification stage and the signal output terminal.
摘要翻译：一种放大器电路，包括输入级和输出级，级联连接在输入信号输入的信号输入端与连接有电容性负载的信号输出端之间，并且至少包括输入放大级和输出放大级，以及至少包括插入在输出放大级的输出端子与信号输出端子之间的电阻器的电阻电路。

5. 发明授权

US5162670A Sample-and-hold circuit device 失效
标题翻译：采样保持电路设备
公开(公告)号：US5162670A
公开(公告)日：1992-11-10
申请号：US636427
申请日：1990-12-28
申请人： Tetsuro Itakura , Takeshi Shima
发明人： Tetsuro Itakura , Takeshi Shima
IPC分类号： G09G3/36 , G11C27/02
CPC分类号： G11C27/026 , G11C27/024 , G09G2310/0289 , G09G3/3688
摘要： A sample-and-hold circuit includes a first switch element which is opened or closed in accordance with a first control signal so as to selectively connect an input signal terminal for receiving an input signal to an internal terminal, a non-linear element for connecting the internal terminal to an output terminal, a potential holding circuit connected between the output terminal and ground, and a second switch element or a current source circuit which is controlled by a second control signal so as to selectively connect the output terminal to ground.

6. 发明授权

US5376841A Sample-and-hold circuit device 失效
标题翻译：采样保持电路装置
公开(公告)号：US5376841A
公开(公告)日：1994-12-27
申请号：US143127
申请日：1993-10-29
申请人： Tetsuro Itakura , Takeshi Shima
发明人： Tetsuro Itakura , Takeshi Shima
IPC分类号： G09G3/36 , G11C27/02 , H03K5/153 , H03K5/24
CPC分类号： G11C27/026 , G11C27/024 , G09G2310/0289 , G09G3/3688
摘要： 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.
摘要翻译：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。

7. 发明授权

US5343089A Sample-and-hold circuit device 失效
标题翻译：采样保持电路装置
公开(公告)号：US5343089A
公开(公告)日：1994-08-30
申请号：US155905
申请日：1993-11-23
申请人： Tetsuro Itakura , Takeshi Shima
发明人： Tetsuro Itakura , Takeshi Shima
IPC分类号： G09G3/36 , G11C27/02
CPC分类号： G11C27/026 , G11C27/024 , G09G2310/0289 , G09G3/3688
摘要： A sample-and-hold circuit includes a first switch element which is opened or closed in accordance with a first control signal so as to selectively connect an input signal terminal for receiving an input signal to an internal terminal, a non-linear element for connecting the internal terminal to an output terminal, a potential holding circuit connected between the output terminal and ground, and a second switch element or a current source circuit which is controlled by a second control signal so as to selectively connect the output terminal to ground.
摘要翻译：采样保持电路包括根据第一控制信号打开或关闭的第一开关元件，以选择性地将用于接收输入信号的输入信号端子连接到内部端子，用于连接的非线性元件输出端子的内部端子，连接在输出端子和地之间的电位保持电路以及由第二控制信号控制的第二开关元件或电流源电路，以选择性地将输出端子连接到地。

8. 发明授权

US06191779B1 Liquid crystal display device, device for controlling drive of liquid crystal display device and D/A converting semiconductor device 失效
标题翻译：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
公开(公告)号：US06191779B1
公开(公告)日：2001-02-20
申请号：US09114195
申请日：1998-07-13
申请人： Takashi Taguchi , Tetsuro Itakura
发明人： Takashi Taguchi , Tetsuro Itakura
IPC分类号： G09G500
CPC分类号： G09G3/2011 , G09G3/3614 , G09G3/3648 , G09G2310/0289 , G09G2310/0297 , G09G2330/023
摘要： 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.
摘要翻译：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

US08797205B2 A/D conversion device and radio device 有权
标题翻译： A / D转换装置和无线电装置
公开(公告)号：US08797205B2
公开(公告)日：2014-08-05
申请号：US13413793
申请日：2012-03-07
申请人： Masanori Furuta , Tetsuro Itakura
发明人： Masanori Furuta , Tetsuro Itakura
IPC分类号： H03M1/12
CPC分类号： H03M1/164 , H03M1/466
摘要： This A/D convertor includes: a first D/A conversion unit configured to sample an analog input signal, and to generate a first difference signal by performing successive comparison of the analog input signal based on a reference voltage; a precharge capacitor unit configured to hold the reference voltage; a first comparing unit configured to compare the first difference signal with a reference value to generate a first digital signal; and an amplifying unit configured to calculate by using the first difference signal and the reference voltage to generate a residual signal.
摘要翻译：该A / D转换器包括：第一D / A转换单元，被配置为对模拟输入信号进行采样，并且通过基于参考电压执行模拟输入信号的连续比较来产生第一差分信号; 配置为保持所述参考电压的预充电电容器单元; 第一比较单元，被配置为将所述第一差分信号与参考值进行比较，以产生第一数字信号; 以及放大单元，被配置为通过使用第一差分信号和参考电压来计算以产生残留信号。

10. 发明授权

US08723713B2 Signal interpolation device and parallel A/D converting device 失效
标题翻译：信号插值装置和并行A / D转换装置
公开(公告)号：US08723713B2
公开(公告)日：2014-05-13
申请号：US13717410
申请日：2012-12-17
申请人： Junya Matsuno , Tetsuro Itakura
发明人： Junya Matsuno , Tetsuro Itakura
IPC分类号： H03M1/36
CPC分类号： H03H11/22 , H03M1/204 , H03M1/205 , H03M1/36 , H03M1/365
摘要： There is provided a signal interpolation device, including: a first amplifier to generate a first signal representing a difference between an input signal and a first reference voltage; a second amplifier to generate a second signal representing a difference between the input signal and a second reference voltage; a first output amplifier to amplify the first signal to generate a first output signal; a second output amplifier to amplify the second signal to generate a second output signal; a third output amplifier to amplify a sum of a first interpolation signal and the first signal to generate a third output signal, the first interpolation signal representing a voltage generated by dividing a difference between the first reference voltage and the second reference voltage by “2^n”; and a fourth output amplifier to amplify a difference between the second signal and the first interpolation signal to generate a fourth output signal.
摘要翻译：提供了一种信号插值装置，包括：第一放大器，用于产生表示输入信号和第一参考电压之间的差的第一信号; 第二放大器，用于产生表示所述输入信号和第二参考电压之间的差的第二信号; 第一输出放大器，用于放大第一信号以产生第一输出信号; 第二输出放大器，用于放大第二信号以产生第二输出信号; 第三输出放大器，用于放大第一内插信号和第一信号的和以产生第三输出信号，第一内插信号表示通过将第一参考电压和第二参考电压之差除以“2 ^ n“; 以及第四输出放大器，用于放大第二信号和第一内插信号之间的差以产生第四输出信号。

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