公开(公告)号：US07636015B2

公开(公告)日：2009-12-22

申请号：US12210662

申请日：2008-09-15

申请人： Daisuke Kurose ,  Tetsuro Itakura

发明人： Daisuke Kurose ,  Tetsuro Itakura

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H01L29/785 ,  H03F3/005 ,  H03F3/45188 ,  H03F3/45475 ,  H03F3/45654 ,  H03F2203/45008 ,  H03F2203/45024 ,  H03F2203/45082 ,  H03F2203/45342 ,  H03F2203/45354 ,  H03F2203/45356 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45536 ,  H03F2203/45551

摘要： Disclosed is a differential amplifier including: first and second transistors each having a first gate, a second gate, a source, and a drain open to a drain side, the first gate and the second gate being controlled independently, a differential input being supplied to between the first gates of the first and second transistors, and the sources of the first and second transistors being connected in common to a first reference potential; first and second load circuits each connected to each of drain sides of the first and second transistors; a detection circuit detecting a common-mode voltage between ones of drain sides of the first and second transistors; and a comparison and amplification circuit amplifying the common-mode voltage in comparison with a second reference potential and supplying an output signal thereof to both of the second gates of the first and second transistors.

公开(公告)号：US07521999B2

公开(公告)日：2009-04-21

申请号：US11687083

申请日：2007-03-16

申请人： Daisuke Kurose ,  Tetsuro Itakura

发明人： Daisuke Kurose ,  Tetsuro Itakura

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H01L29/785 ,  H03F3/005 ,  H03F3/45188 ,  H03F3/45475 ,  H03F3/45654 ,  H03F2203/45008 ,  H03F2203/45024 ,  H03F2203/45082 ,  H03F2203/45342 ,  H03F2203/45354 ,  H03F2203/45356 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45536 ,  H03F2203/45551

摘要： Disclosed is a differential amplifier including: first and second transistors each having a first gate, a second gate, a source, and a drain open to a drain side, the first gate and the second gate being controlled independently, a differential input being supplied to between the first gates of the first and second transistors, and the sources of the first and second transistors being connected in common to a first reference potential; first and second load circuits each connected to each of drain sides of the first and second transistors; a detection circuit detecting a common-mode voltage between ones of drain sides of the first and second transistors; and a comparison and amplification circuit amplifying the common-mode voltage in comparison with a second reference potential and supplying an output signal thereof to both of the second gates of the first and second transistors.

摘要翻译： 公开了一种差分放大器，包括：第一和第二晶体管，每个具有通向漏极侧的第一栅极，第二栅极，源极和漏极，第一栅极和第二栅极被独立地控制，差分输入被提供给 在第一和第二晶体管的第一栅极之间，并且第一和第二晶体管的源极共同连接到第一参考电位; 第一和第二负载电路各自连接到第一和第二晶体管的每个漏极侧; 检测电路，检测第一和第二晶体管的漏极侧之间的共模电压; 以及比较放大电路，与第二参考电位相比放大共模电压，并将其输出信号提供给第一和第二晶体管的第二栅极。

公开(公告)号：US20090009247A1

公开(公告)日：2009-01-08

申请号：US12210662

申请日：2008-09-15

申请人： Daisuke Kurose ,  Tetsuro Itakura

发明人： Daisuke Kurose ,  Tetsuro Itakura

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H01L29/785 ,  H03F3/005 ,  H03F3/45188 ,  H03F3/45475 ,  H03F3/45654 ,  H03F2203/45008 ,  H03F2203/45024 ,  H03F2203/45082 ,  H03F2203/45342 ,  H03F2203/45354 ,  H03F2203/45356 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45536 ,  H03F2203/45551

摘要： Disclosed is a differential amplifier including: first and second transistors each having a first gate, a second gate, a source, and a drain open to a drain side, the first gate and the second gate being controlled independently, a differential input being supplied to between the first gates of the first and second transistors, and the sources of the first and second transistors being connected in common to a first reference potential; first and second load circuits each connected to each of drain sides of the first and second transistors; a detection circuit detecting a common-mode voltage between ones of drain sides of the first and second transistors; and a comparison and amplification circuit amplifying the common-mode voltage in comparison with a second reference potential and supplying an output signal thereof to both of the second gates of the first and second transistors.

摘要翻译： 公开了一种差分放大器，包括：第一和第二晶体管，每个具有通向漏极侧的第一栅极，第二栅极，源极和漏极，第一栅极和第二栅极被独立地控制，差分输入被提供给 在第一和第二晶体管的第一栅极之间，并且第一和第二晶体管的源极共同连接到第一参考电位; 第一和第二负载电路各自连接到第一和第二晶体管的每个漏极侧; 检测电路，检测第一和第二晶体管的漏极侧之间的共模电压; 以及比较放大电路，与第二参考电位相比放大共模电压，并将其输出信号提供给第一和第二晶体管的第二栅极。

公开(公告)号：US20060187100A1

公开(公告)日：2006-08-24

申请号：US11409603

申请日：2006-04-24

申请人： Daisuke Kurose ,  Takafumi Yamaji ,  Tetsuro Itakura

发明人： Daisuke Kurose ,  Takafumi Yamaji ,  Tetsuro Itakura

IPC分类号： H03M3/00

CPC分类号： H03M1/123 ,  H03M1/0695 ,  H03M1/1205 ,  H03M1/44

摘要： A multiple input AD conversion apparatus includes a first unit AD converter including a plurality of first conversion stages connected in cascade to convert a first analog input signal to a first digital output signal, a second unit AD converter including a plurality of second conversion stages connected in cascade to convert a second analog input signal to a second digital output signal, and an operational amplifier shared between the first conversion stage and the second conversion stage in a time sharing.

公开(公告)号：US06977541B2

公开(公告)日：2005-12-20

申请号：US10743949

申请日：2003-12-24

申请人： Daisuke Kurose ,  Tetsuro Itakura ,  Rui Ito

发明人： Daisuke Kurose ,  Tetsuro Itakura ,  Rui Ito

IPC分类号： H03F3/45 ,  G06G7/18 ,  H03F1/00 ,  H03F3/345 ,  H03H11/04 ,  H03H11/12 ,  H03H11/24 ,  H03H11/32 ,  H04B1/10

CPC分类号： H03H11/32 ,  H03F3/345 ,  H03F3/45475 ,  H03F2203/45511 ,  H03F2203/45512 ,  H03F2203/45592 ,  H03F2203/45652 ,  H03H11/1291 ,  H03H11/245

摘要： A variable time constant circuit includes an inverting amplifier which has an amplifier input terminal and an amplifier output terminal connected to a signal output terminal and inverts a signal inputted to the amplifier input terminal, a first and a second resistor which are connected in series between the signal input terminal and the amplifier input terminal, a capacitor connected between the amplifier input terminal and the amplifier output terminal, a field effect transistor including a gate terminal connected to a junction point of the first and second resistors, a source terminal kept at a constant potential, and a drain terminal connected to the amplifier input terminal, the transistor flowing a current through the drain terminal according to a voltage between the gate terminal and the source terminal, and a control circuit which controls a voltage-current conversion ratio of the transistor according to a time constant control signal.

摘要翻译： 可变时间常数电路包括反相放大器，其具有放大器输入端和连接到信号输出端的放大器输出端，并且反相输入到放大器输入端的信号，第一和第二电阻串联在第 信号输入端子和放大器输入端子，连接在放大器输入端子和放大器输出端子之间的电容器，场效应晶体管，其包括连接到第一和第二电阻器的接合点的栅极端子，源极端子保持恒定 电位和连接到放大器输入端子的漏极端子，晶体管根据栅极端子和源极端子之间的电压流过漏极端子，以及控制电路，其控制晶体管的电压 - 电流转换比 根据时间常数控制信号。

公开(公告)号：US20060022722A1

公开(公告)日：2006-02-02

申请号：US11235264

申请日：2005-09-27

申请人： Toshiyuki Umeda ,  Shoji Otaka ,  Tetsuro Itakura

发明人： Toshiyuki Umeda ,  Shoji Otaka ,  Tetsuro Itakura

IPC分类号： H03B19/00

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D2200/0033 ,  H03D2200/0043 ,  H03D2200/0084

摘要： A frequency converter converts a first current signal having a first frequency into a second current signal having a second frequency different from the first frequency. The frequency converter includes an adder and a switching circuit. The adder adds the first current signal and a reference current signal to output a third current signal. The switching circuit passes only that portion of the third current signal larger in magnitude than a threshold current to output the second current signal.

摘要翻译： 变频器将具有第一频率的第一电流信号转换成具有与第一频率不同的第二频率的第二电流信号。 变频器包括加法器和开关电路。 加法器将第一电流信号和参考电流信号相加以输出第三电流信号。 开关电路仅通过第三电流信号的大于阈值电流的部分，以输出第二电流信号。

公开(公告)号：US07075345B2

公开(公告)日：2006-07-11

申请号：US10207024

申请日：2002-07-30

申请人： Toshiyuki Umeda ,  Shoji Otaka ,  Tetsuro Itakura

发明人： Toshiyuki Umeda ,  Shoji Otaka ,  Tetsuro Itakura

IPC分类号： H03B19/00

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D2200/0033 ,  H03D2200/0043 ,  H03D2200/0084

摘要： A frequency converter converts a first current signal having a first frequency into a second current signal having a second frequency different fro the first frequency. The frequency converter includes an adder and a switching circuit. The adder adds the first current signal and a reference current signal to output a third current signal. The switching circuit passes only that portion of the third current signal larger in magnitude than a threshold current to output the second current signal.

摘要翻译： 变频器将具有第一频率的第一电流信号转换成具有与第一频率不同的第二频率的第二电流信号。 变频器包括加法器和开关电路。 加法器将第一电流信号和参考电流信号相加以输出第三电流信号。 开关电路仅通过第三电流信号的大于阈值电流的部分，以输出第二电流信号。

公开(公告)号：US06954089B2

公开(公告)日：2005-10-11

申请号：US10776199

申请日：2004-02-12

申请人： Toshiyuki Umeda ,  Shoji Otaka ,  Tetsuro Itakura

发明人： Toshiyuki Umeda ,  Shoji Otaka ,  Tetsuro Itakura

IPC分类号： H03D7/12 ,  H03D7/14 ,  H03L7/16 ,  H03B19/00

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D2200/0033 ,  H03D2200/0043 ,  H03D2200/0084

摘要： A frequency converter configured to convert a first current signal having a first frequency into a second current signal having a second frequency different from the first frequency is disclosed, which comprises an adder configured to add the first current signal and a predetermined reference current signal to output a third current signal corresponding to the sum of the first current signal and the reference current signal, and a switching circuit configured to pass only that portion of the third current signal which is larger in magnitude than a threshold current to output the second current signal.

摘要翻译： 公开了一种频率转换器，其被配置为将具有第一频率的第一电流信号转换成具有与第一频率不同的第二频率的第二电流信号，其包括加法器，其被配置为将第一电流信号和预定参考电流信号相加以输出 第三电流信号对应于第一电流信号和参考电流信号的和，以及开关电路，其被配置为仅通过大于阈值电流的第三电流信号的大小部分以输出第二电流信号。

公开(公告)号：US07123061B2

公开(公告)日：2006-10-17

申请号：US11235264

申请日：2005-09-27

申请人： Toshiyuki Umeda ,  Shoji Otaka ,  Tetsuro Itakura

发明人： Toshiyuki Umeda ,  Shoji Otaka ,  Tetsuro Itakura

IPC分类号： H03B19/00

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D2200/0033 ,  H03D2200/0043 ,  H03D2200/0084

摘要： A frequency converter converts a first current signal having a first frequency into a second current signal having a second frequency different from the first frequency. The frequency converter includes an adder and a switching circuit. The adder adds the first current signal and a reference current signal to output a third current signal. The switching circuit passes only that portion of the third current signal larger in magnitude than a threshold current to output the second current signal.

摘要翻译： 变频器将具有第一频率的第一电流信号转换成具有与第一频率不同的第二频率的第二电流信号。 变频器包括加法器和开关电路。 加法器将第一电流信号和参考电流信号相加以输出第三电流信号。 开关电路仅通过第三电流信号的大于阈值电流的部分，以输出第二电流信号。

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。