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21. 发明申请

US20100109774A1 Operational amplifier 有权
公开(公告)号：US20100109774A1
公开(公告)日：2010-05-06
申请号：US12654960
申请日：2010-01-11
申请人： Kouichi Nishimura , Yoshihiko Hori
发明人： Kouichi Nishimura , Yoshihiko Hori
IPC分类号： H03F3/45
CPC分类号： H03F3/4521 , H03F3/45475 , H03F3/72 , H03F2200/411 , H03F2200/451 , H03F2203/45138 , H03F2203/45248 , H03F2203/45512 , H03F2203/45536 , H03F2203/45648 , H03F2203/45726 , H03F2203/7227
摘要： An operational amplifier includes an input stage amplifier that receives an input signal, an output stage amplifier that amplifies a signal output from the input stage amplifier and outputs the signal, a capacitor that is connected between an input node and an output node of the output stage amplifier, and a charge and discharge control circuit that controls a charge and discharge current of the capacitor.

22. 发明申请

US20090289930A1 Operational amplifier circuit and display panel driving apparatus 审中-公开
标题翻译：运算放大器电路和显示面板驱动装置
公开(公告)号：US20090289930A1
公开(公告)日：2009-11-26
申请号：US12461056
申请日：2009-07-30
申请人： Kouichi Nishimura
发明人： Kouichi Nishimura
IPC分类号： G09G5/00 , H03F3/45
CPC分类号： H03F3/45183 , G09G3/2011 , G09G3/3614 , G09G3/3685 , G09G2310/027 , G09G2310/0289 , G09G2320/0276 , H03F3/3023 , H03F3/45179 , H03F3/4521 , H03F3/45219 , H03F3/45376 , H03F3/45475 , H03F2200/414 , H03F2203/30021 , H03F2203/45138 , H03F2203/45188 , H03F2203/45224 , H03F2203/45236 , H03F2203/45396 , H03F2203/45471 , H03F2203/45512 , H03F2203/45618
摘要： An operational amplifier circuit includes: an input stage for generating an internal current corresponding to a potential difference between inverting and non-inverting input terminals; and an output stage for driving an output terminal in response to the internal current. The output terminal includes: a floating current source through which the internal current flows; a PMOS transistor for driving the output terminal corresponding to a potential of a first terminal of the floating current source; and an NMOS transistor for driving the output terminal corresponding to a potential of a second terminal of the floating current source. The floating current source includes: a PMOS transistor whose source and drain are respectively connected to the first and second terminals; and an NMOS transistor whose drain and source are respectively connected to the first and second terminals. A back gate of the latter PMOS transistor is connected to the source thereof.
摘要翻译：运算放大器电路包括：输入级，用于产生对应于反相和非反相输入端之间的电位差的内部电流; 以及用于响应于内部电流驱动输出端子的输出级。输出端子包括：内部电流流过的浮动电流源; 用于驱动对应于浮动电流源的第一端子的电位的输出端子的PMOS晶体管; 以及用于驱动对应于浮动电流源的第二端子的电位的输出端子的NMOS晶体管。浮动电流源包括：PMOS晶体管，其源极和漏极分别连接到第一和第二端子; 以及NMOS晶体管，其漏极和源极分别连接到第一和第二端子。后一个PMOS晶体管的背栅极连接到其源极。

23. 发明授权

US07514965B2 Voltage comparator circuit with symmetric circuit topology 失效
标题翻译：具有对称电路拓扑的电压比较器电路
公开(公告)号：US07514965B2
公开(公告)日：2009-04-07
申请号：US11274183
申请日：2005-11-16
申请人： Kouichi Nishimura
发明人： Kouichi Nishimura
IPC分类号： H03K5/22
CPC分类号： H03K5/2481
摘要： A voltage comparator circuit is composed of a differential amplifier circuit receiving a pair of input signals to develop an output signal on an output terminal, and a waveform shaping circuit connected to the output terminal. The differential amplifier circuit includes: a first differential transistor pair responsive to the pair of input signals to output first and second output currents; a second differential transistor pair responsive to the pair of input signals to output third and fourth output currents; a first current mirror circuit developing a first internal current in response to the first output current; a third current mirror circuit complementary to the first current mirror circuit and developing a third internal current in response to the third output current; a second current mirror circuit developing a second internal current in response to the second output current and the third internal current; and a fourth current mirror circuit complementary to the second current mirror circuit and developing a fourth internal current in response to the fourth output current and the first internal current. A resultant current which is said second and fourth internal currents added together is drawn from or supplied to the output terminal of the differential amplifier circuit.
摘要翻译：电压比较器电路由接收一对输入信号的差分放大电路构成，以在输出端产生输出信号，以及连接到输出端的波形整形电路。所述差分放大器电路包括：响应所述一对输入信号以输出第一和第二输出电流的第一差分晶体管对; 响应所述一对输入信号以输出第三和第四输出电流的第二差分晶体管对; 响应于所述第一输出电流而开发第一内部电流的第一电流镜电路; 与第一电流镜电路互补并响应于第三输出电流显影第三内部电流的第三电流镜电路; 响应于所述第二输出电流和所述第三内部电流而开发第二内部电流的第二电流镜电路; 以及与第二电流镜电路互补的第四电流镜电路，并且响应于第四输出电流和第一内部电流而开发第四内部电流。被加在一起的所述第二和第四内部电流的合成电流从差分放大器电路的输出端抽出或提供给差分放大器电路的输出端。

24. 发明申请

US20080180427A1 Liquid crystal display device, source driver, and method of driving a liquid crystal display panel 有权
标题翻译：液晶显示装置，源极驱动器及驱动液晶显示面板的方法
公开(公告)号：US20080180427A1
公开(公告)日：2008-07-31
申请号：US12010840
申请日：2008-01-30
申请人： Kouichi Nishimura
发明人： Kouichi Nishimura
IPC分类号： G06F3/038
CPC分类号： G09G3/3688 , G09G2310/027 , G09G2320/0233
摘要： A source driver which can control the spatial cycle of inverting the polarity of offset voltage in response to the spatial cycle of inverting the polarity of data signal. The liquid crystal display device according to the present invention has an LCD panel, having data lines, and source drivers for supplying data signal to the data lines. The source driver includes an offset cancel control circuit for generating an offset cancel control signal and an amplifier used for generating the data signal, which is configured so as to invert the polarity of the offset voltage in response to the offset cancel control signal OCC. The offset cancel controller circuit receives the pattern select signal PSEL specifying the cycle of inverting the polarity of the offset voltage of the amplifier to generate the offset cancel control signal in response to the pattern select signal PSEL.
摘要翻译：源驱动器可以响应于反转数据信号的极性的空间周期来控制反相偏移电压的极性的空间循环。根据本发明的液晶显示装置具有具有数据线的LCD面板和用于向数据线提供数据信号的源极驱动器。源极驱动器包括用于产生偏移消除控制信号的偏移消除控制电路和用于产生数据信号的放大器，其被配置为响应于偏移消除控制信号OCC来反转偏移电压的极性。偏移消除控制器电路接收模式选择信号PSEL，其指定反转放大器的偏移电压的极性的周期，以响应于模式选择信号PSEL产生偏移消除控制信号。

25. 发明授权

US07405622B2 Operational amplifier with less offset 失效
标题翻译：运算放大器偏移较小
公开(公告)号：US07405622B2
公开(公告)日：2008-07-29
申请号：US11398546
申请日：2006-04-06
申请人： Kouichi Nishimura , Atsushi Shimatani , Motoyasu Ichimura
发明人： Kouichi Nishimura , Atsushi Shimatani , Motoyasu Ichimura
IPC分类号： H03F3/26
CPC分类号： H03F3/45192 , G09G3/3688 , H03F3/3022 , H03F3/45345 , H03F3/45744 , H03F2203/30081 , H03F2203/30114 , H03F2203/45212 , H03F2203/45366 , H03F2203/45512 , H03F2203/45648 , H03F2203/45681 , H03F2203/45732
摘要： A differential amplifier includes an input stage circuit including a first differential pair and a second differential pair which are complementary to each other; a first current mirror circuit connected with the first differential pair and configured to function as an active load; a second current mirror circuit connected with the second differential pair and configured to function as an active load; an output stage circuit having a pair of output transistors connected in series between a higher power supply and a lower power supply; an operation point setting circuit configured to set an operation point of the output transistors; and a floating constant current source connected between an input terminal of the first current mirror circuit and an input terminal of the second current mirror circuit, and configured to supply a constant current. The first current mirror circuit and the second current mirror circuit supply superimpose an output of the input stage circuit on a current corresponding to the constant current by the floating constant current source to supply to the operation point setting circuit.
摘要翻译：差分放大器包括：输入级电路，包括彼此互补的第一差分对和第二差分对; 与所述第一差分对连接并被配置为用作有效负载的第一电流镜电路; 与所述第二差分对连接并被配置为用作有效负载的第二电流镜电路; 输出级电路，其具有串联连接在较高电源和较低电源之间的一对输出晶体管; 操作点设定电路，被配置为设置所述输出晶体管的操作点; 以及浮置恒流源，连接在第一电流镜电路的输入端和第二电流镜电路的输入端之间，并且被配置为提供恒定电流。第一电流镜电路和第二电流镜电路电源通过浮动恒流源将输入级电路的输出叠加在与恒定电流相对应的电流上，以提供给操作点设置电路。

26. 发明授权

US07248115B2 Differential amplifier operable in wide range 失效
标题翻译：差分放大器可在宽范围内工作
公开(公告)号：US07248115B2
公开(公告)日：2007-07-24
申请号：US10801004
申请日：2004-03-16
申请人： Kouichi Nishimura
发明人： Kouichi Nishimura
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F3/45632 , H03F3/68 , H03F3/72
摘要： Differential amplifier includes a differential amplifier circuit, a bias circuit and an output circuit. The differential amplifier circuit includes first and second differential amplifier sections. The first differential amplifier section includes a first PMOS transistor which has a source connected with a power supply line, and a first pair of PMOS transistors which have sources connected with a drain of the first PMOS and gates respectively receiving first and second input voltages. The second differential amplifier section includes a first NMOS transistor which has a source connected with a ground line, and a second pair of NMOS transistors which have sources connected with a drain of the first NMOS and gates respectively receiving the first and second input voltages. The bias circuit activates one of the amplifier sections in response to a control signal. The output circuit outputs an output signal from an output of the activated differential amplifier section.
摘要翻译：差分放大器包括差分放大器电路，偏置电路和输出电路。差分放大器电路包括第一和第二差分放大器部分。第一差分放大器部分包括具有与电源线连接的源极的第一PMOS晶体管和分别接收第一和第二输入电压的源极与第一PMOS的漏极连接的源极和第一对PMOS晶体管。第二差分放大器部分包括具有与接地线连接的源极的第一NMOS晶体管和与第一NMOS的漏极和分别接收第一和第二输入电压的栅极连接的源极的第二对NMOS晶体管。偏置电路响应于控制信号激活放大器部分中的一个。输出电路从激活的差分放大器部分的输出端输出输出信号。

27. 发明授权

US07170348B2 Differential amplifying circuit 有权
标题翻译：差分放大电路
公开(公告)号：US07170348B2
公开(公告)日：2007-01-30
申请号：US10975935
申请日：2004-10-29
申请人： Kouichi Nishimura , Atsushi Shimatani
发明人： Kouichi Nishimura , Atsushi Shimatani
IPC分类号： H03F3/45
CPC分类号： H03F3/4521 , H03F3/45183 , H03F2203/45682
摘要： A differential amplifier circuit includes a first differential transistor pair, a second differential transistor pair, an adder section and an amplifying unit. The first differential transistor pair receives first and second input signals and an output signal as a third input signal, and the second differential transistor pair receives the first and second input signals and the output signal as a fourth input signal. The adder section adds first output signals from the first differential transistor pair and second output signals from the second differential transistor pair, and the amplifying unit amplifies an addition resultant signal from the adder section to output to the first and second differential transistor pairs.
摘要翻译：差分放大器电路包括第一差分晶体管对，第二差分晶体管对，加法器部分和放大单元。第一差分晶体管对接收第一和第二输入信号以及输出信号作为第三输入信号，第二差分晶体管对将第一和第二输入信号和输出信号作为第四输入信号接收。加法器部分将来自第一差分晶体管对的第一输出信号和来自第二差分晶体管对的第二输出信号相加，并且放大单元放大来自加法器部分的相加结果信号以输出到第一和第二差分晶体管对。

28. 发明授权

US07075342B2 Driver circuit 有权
公开(公告)号：US07075342B2
公开(公告)日：2006-07-11
申请号：US10942905
申请日：2004-09-17
申请人： Kouichi Nishimura
发明人： Kouichi Nishimura
IPC分类号： H03K3/00
CPC分类号： H03K5/2481 , G09G3/3688 , G09G2310/0248 , G09G2310/0291 , H03K17/04163 , H03K17/162 , H03K19/01721
摘要： A driver circuit includes a differential amplifier for receiving an input signal, and first and second transistors of different conductivity types. The first and second transistors are connected serially between two power supply terminals in a form (source follower) in which the sources of the transistors are connected to an output point, for push-pull driving the output point in response to an output signal from the differential amplifier.

29. 发明申请

US20060103433A1 Voltage comparator circuit with symmetric circuit topology 失效
标题翻译：具有对称电路拓扑的电压比较器电路
公开(公告)号：US20060103433A1
公开(公告)日：2006-05-18
申请号：US11274183
申请日：2005-11-16
申请人： Kouichi Nishimura
发明人： Kouichi Nishimura
IPC分类号： H03K5/22
CPC分类号： H03K5/2481
摘要： A voltage comparator circuit is composed of a differential amplifier circuit receiving a pair of input signals to develop an output signal on an output terminal, and a waveform shaping circuit connected to the output terminal. The differential amplifier circuit includes: a first differential transistor pair responsive to the pair of input signals to output first and second output currents; a second differential transistor pair responsive to the pair of input signals to output third and fourth output currents; a first current mirror circuit developing a first internal current in response to the first output current; a third current mirror circuit complementary to the first current mirror circuit and developing a third internal current in response to the third output current; a second current mirror circuit developing a second internal current in response to the third output current and the third internal current; and a fourth current mirror circuit complementary to the second current mirror circuit and developing a fourth internal current in response to the fourth output current and the first internal current. A resultant current which is said second and fourth currents added together is drawn from or supplied to the output terminal of the differential amplifier circuit.
摘要翻译：电压比较器电路由接收一对输入信号的差分放大电路构成，以在输出端产生输出信号，以及连接到输出端的波形整形电路。所述差分放大器电路包括：响应所述一对输入信号以输出第一和第二输出电流的第一差分晶体管对; 响应所述一对输入信号以输出第三和第四输出电流的第二差分晶体管对; 响应于所述第一输出电流而开发第一内部电流的第一电流镜电路; 与第一电流镜电路互补并响应于第三输出电流显影第三内部电流的第三电流镜电路; 响应于所述第三输出电流和所述第三内部电流而开发第二内部电流的第二电流镜电路; 以及与第二电流镜电路互补的第四电流镜电路，并且响应于第四输出电流和第一内部电流而开发第四内部电流。作为加在一起的所述第二和第四电流的合成电流从差动放大器电路的输出端抽出或提供给差分放大器电路的输出端。

30. 发明申请

US20050062508A1 Driver circuit 有权
标题翻译：驱动电路
公开(公告)号：US20050062508A1
公开(公告)日：2005-03-24
申请号：US10942905
申请日：2004-09-17
申请人： Kouichi Nishimura
发明人： Kouichi Nishimura
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36 , H03F3/26 , H03K5/24 , H03K17/0416 , H03K17/16 , H03K17/30 , H03K19/017 , H03B1/00
CPC分类号： H03K5/2481 , G09G3/3688 , G09G2310/0248 , G09G2310/0291 , H03K17/04163 , H03K17/162 , H03K19/01721
摘要： A driver circuit includes a differential amplifier for receiving an input signal, and first and second transistors of different conductivity types. The first and second transistors are connected serially between two power supply terminals in a form (source follower) in which the sources of the transistors are connected to an output point, for push-pull driving the output point in response to an output signal from the differential amplifier.
摘要翻译：驱动器电路包括用于接收输入信号的差分放大器以及不同导电类型的第一和第二晶体管。第一和第二晶体管以两个电源端子（源极跟随器）串联连接，其中晶体管的源极连接到输出点，用于响应于来自所述晶体管的输出信号推挽驱动输出点差分放大器。

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