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1. 发明授权

US10634754B2 Correction device, correction method, and magnetic resonance imaging apparatus 有权
公开(公告)号：US10634754B2
公开(公告)日：2020-04-28
申请号：US15693322
申请日：2017-08-31
申请人： Kabushiki Kaisha Toshiba
发明人： Shinji Takakura , Shigen Yasunaka
IPC分类号： G01R33/565 , G01R33/385 , G01R33/56 , G05B13/02 , H03F1/00
CPC分类号： G01R33/56518 , G01R33/3852 , G01R33/5608 , G05B13/02 , H03F1/00
摘要： According to one embodiment, a correction device is used for an apparatus including a coil and a conductor in a vicinity of the coil. The correction device corrects an influence of a magnetic field generated by the conductor when a current flows through the coil. The correction device includes a first measuring device, a second measuring device, and a control device. The first measuring device measures a first signal of the coil. The second measuring device measures a second signal of the coil, which is different from the first signal. The control device estimates the influence acting on the coil, based on a difference between the first signal filtered by a first filter and the second signal filtered by a second filter. Furthermore, the control device controls a command signal for flowing the current to the coil, based on an estimation result of the influence.

2. 发明授权

US09641132B2 High efficiency amplification 有权
公开(公告)号：US09641132B2
公开(公告)日：2017-05-02
申请号：US14636387
申请日：2015-03-03
申请人： SNAPTRACK, INC.
发明人： Martin Paul Wilson
IPC分类号： H03F1/00 , H03F1/02 , H03F3/24 , H03F3/189 , H03F3/19 , H03F3/21
CPC分类号： H03F1/0222 , H03F1/00 , H03F1/02 , H03F1/025 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/102 , H03F2200/331 , H03F2200/451 , H03F2200/504 , H03F2200/511
摘要： A radio frequency amplification stage comprising: an amplifier for receiving an input signal to be amplified and a power supply voltage; and a power supply voltage stage for supplying said power supply voltage, comprising: means for providing a reference signal representing the envelope of the input signal; means for selecting one of a plurality of supply voltage levels in dependence on the reference signal; and means for generating an adjusted selected power supply voltage, comprising an ac amplifier for amplifying a difference between the reference signal and one of the selected supply voltage level or the adjusted selected supply voltage level, and a summer for summing the amplified difference with the selected supply voltage to thereby generate the adjusted supply voltage.

3. 发明授权

US09000747B2 Single supply amplifier with swing to ground 有权
标题翻译：单电源放大器摆放到地面
公开(公告)号：US09000747B2
公开(公告)日：2015-04-07
申请号：US13829652
申请日：2013-03-14
申请人： Linear Technology Corporation
发明人： Thomas Lloyd Botker
IPC分类号： H02M3/158 , H03F1/00
CPC分类号： H03F1/00 , H03F1/0261 , H03F3/45192 , H03F2200/513
摘要： An amplifier circuit has a voltage input terminal, for receiving Vin, and a voltage output terminal, for outputting Vout. A feedback circuit controls Vout to match Vin. A differential input stage receives Vin and Vout and generates a first output signal. An output stage comprises a pull down circuit for Vout. A main MOSFET is controlled by the first output signal to pull down Vout to match Vin when Vout is above a threshold voltage Vtrans. An auxiliary MOSFET, in parallel with the main MOSFET, is controlled by the first output signal to pull down Vout to match Vin when Vout is below Vtrans. The main MOSFET is turned substantially off when Vout is below Vtrans. A headroom generator coupled between the Vout terminal and a drain of the auxiliary MOSFET allows the auxiliary MOSFET to operate in its active region and pull Vout to ground.
摘要翻译：放大器电路具有用于接收Vin的电压输入端子和用于输出Vout的电压输出端子。反馈电路控制Vout以匹配Vin。差分输入级接收Vin和Vout并产生第一输出信号。输出级包括用于Vout的下拉电路。当Vout高于阈值电压Vtrans时，主MOSFET由第一输出信号控制以下拉Vout以匹配Vin。与主MOSFET并联的辅助MOSFET由第一输出信号控制，以在Vout低于Vtrans时下拉Vout以匹配Vin。当Vout低于Vtrans时，主MOSFET关闭。耦合在Vout端子和辅助MOSFET的漏极之间的裕量发生器允许辅助MOSFET在其有源区域中工作并将Vout拉到地。

4. 发明授权

US08912845B2 Multiple winding transformer coupled amplifier 有权
标题翻译：多绕组变压器耦合放大器
公开(公告)号：US08912845B2
公开(公告)日：2014-12-16
申请号：US13736028
申请日：2013-01-07
申请人： Edward Perry Jordan
发明人： Edward Perry Jordan
IPC分类号： H03F1/34 , H03F1/00
CPC分类号： H03F1/00 , H03F1/347 , H03F3/195 , H03F3/211 , H03F2200/411 , H03F2200/489 , H03F2200/537
摘要： An integrated circuit includes a radio frequency (RF) amplifier having a trifilar transformer coupled to a gain device in two negative feedback paths. The trifilar transformer includes a first winding, a second winding and a third winding, a first dielectric core is disposed between the first winding and the second winding, and a second dielectric core is disposed between the second winding and the third winding. A first winding ratio between the first winding and the second winding combined with a second winding ratio between the second winding and the third winding affects a total gain of the RF amplifier. In a specific embodiment, the gain device is a transistor, the first winding is coupled to a base of the transistor, the second winding is coupled to a collector of the transistor, and the third winding is coupled to an emitter of the transistor.
摘要翻译：集成电路包括具有耦合到两个负反馈路径中的增益器件的三相变压器的射频（RF）放大器。三相变压器包括第一绕组，第二绕组和第三绕组，第一介质芯设置在第一绕组和第二绕组之间，第二介质芯设置在第二绕组和第三绕组之间。第一绕组和第二绕组之间的第一绕组比与第二绕组和第三绕组之间的第二绕组比组合影响RF放大器的总增益。在具体实施例中，增益器件是晶体管，第一绕组耦合到晶体管的基极，第二绕组耦合到晶体管的集电极，第三绕组耦合到晶体管的发射极。

5. 发明申请

US20140232470A1 High Efficiency Amplification 有权
公开(公告)号：US20140232470A1
公开(公告)日：2014-08-21
申请号：US14264631
申请日：2014-04-29
申请人： Martin Paul Wilson
发明人： Martin Paul Wilson
IPC分类号： H03F1/02 , H03F3/189
CPC分类号： H03F1/0222 , H03F1/00 , H03F1/02 , H03F1/025 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/102 , H03F2200/331 , H03F2200/451 , H03F2200/504 , H03F2200/511
摘要： A radio frequency amplification stage comprising: an amplifier for receiving an input signal to be amplified and a power supply voltage; and a power supply voltage stage for supplying said power supply voltage, comprising: means for providing a reference signal representing the envelope of the input signal; means for selecting one of a plurality of supply voltage levels in dependence on the reference signal; and means for generating an adjusted selected power supply voltage, comprising an ac amplifier for amplifying a difference between the reference signal and one of the selected supply voltage level or the adjusted selected supply voltage level, and a summer for summing the amplified difference with the selected supply voltage to thereby generate the adjusted supply voltage.

6. 发明申请

US20130278331A1 Reference Potential Converter Circuit 审中-公开
标题翻译：参考电位转换器电路
公开(公告)号：US20130278331A1
公开(公告)日：2013-10-24
申请号：US13867477
申请日：2013-04-22
申请人： INTERCHIP CORPORATION
发明人： Masaaki Kamiya
IPC分类号： H03F1/00
CPC分类号： H03F1/00 , G05F3/08
摘要： A reference potential converter circuit comprises: a first resistor (resistance value R1) serving as a feedback resistor for an operational amplifier; a second resistor (resistance value R2) connected to the first resistor and a reference voltage; and a third resistor (reference value R3) and a fourth resistor (reference value R4) connected between a power supply and ground. A difference voltage between Vout and Vref is divided by an R1/R2 ratio and applied to an inverting input terminal of the operational amplifier. A power supply voltage is divided by an R3/R4 ratio and applied to a non-inverting input terminal of the operational amplifier. The R1/R2 ratio and the R3/R4 ratio are equal.
摘要翻译：参考电位转换器电路包括：用作运算放大器的反馈电阻器的第一电阻器（电阻值R1）连接到第一电阻器的第二电阻器（电阻值R2）和参考电压; 和连接在电源和地之间的第三电阻器（参考值R3）和第四电阻器（参考值R4）。 Vout和Vref之间的差分电压除以R1 / R2比，并施加到运算放大器的反相输入端。电源电压由R3 / R4比率除以运算放大器的非反相输入端。 R1 / R2比和R3 / R4比相等。

7. 发明申请

US20120212291A1 High Efficiency Amplification 失效
标题翻译：高效扩增
公开(公告)号：US20120212291A1
公开(公告)日：2012-08-23
申请号：US13460111
申请日：2012-04-30
申请人： Martin Paul Wilson
发明人： Martin Paul Wilson
IPC分类号： H03F3/45
CPC分类号： H03F1/0222 , H03F1/00 , H03F1/02 , H03F1/025 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/102 , H03F2200/331 , H03F2200/451 , H03F2200/504 , H03F2200/511
摘要： A radio frequency amplification stage comprising: an amplifier for receiving an input signal to be amplified and a power supply voltage; and a power supply voltage stage for supplying said power supply voltage, comprising: means for providing a reference signal representing the envelope of the input signal; means for selecting one of a plurality of supply voltage levels in dependence on the reference signal; and means for generating an adjusted selected power supply voltage, comprising an ac amplifier for amplifying a difference between the reference signal and one of the selected supply voltage level or the adjusted selected supply voltage level, and a summer for summing the amplified difference with the selected supply voltage to thereby generate the adjusted supply voltage.
摘要翻译：一种射频放大级，包括：放大器，用于接收待放大的输入信号和电源电压; 以及用于提供所述电源电压的电源电压级，包括：用于提供表示所述输入信号的包络的参考信号的装置; 用于根据参考信号选择多个电源电压电平中的一个的装置; 以及用于产生经调整的所选择的电源电压的装置，包括用于放大参考信号与所选择的电源电压电平或所调整的所选电源电压电平之一之间的差的交流放大器，以及用于将放大的差与所选择的电源电压相加的加法器供给电压，从而生成调整后的电源电压。

8. 发明申请

US20100109735A1 Control signal generation circuit and sense amplifier circuit using the same 有权
标题翻译：控制信号发生电路和读出放大器电路使用相同
公开(公告)号：US20100109735A1
公开(公告)日：2010-05-06
申请号：US12459365
申请日：2009-06-29
申请人： Yin Jae Lee
发明人： Yin Jae Lee
IPC分类号： H03H11/26
CPC分类号： H03F1/00 , G11C7/08 , G11C7/22 , G11C11/24 , G11C11/4076 , G11C11/4091 , H03H11/26
摘要： A control signal generation circuit includes a voltage detection unit which detects a level of an external voltage and generates first and second detection signals and a control signal control unit which delays a sense amplifier enable signal in response to the first and second detection signals and generates first through third control signals. The enable period of the first and second control signals are controlled based on the levels of the first and second detection signals.
摘要翻译：控制信号发生电路包括电压检测单元，其检测外部电压的电平并产生第一和第二检测信号;以及控制信号控制单元，其响应于第一和第二检测信号延迟读出放大器使能信号，并且产生第一通过第三控制信号。基于第一和第二检测信号的电平来控制第一和第二控制信号的使能周期。

9. 发明申请

US20090128236A1 High Efficiency Amplification 有权
标题翻译：高效扩增
公开(公告)号：US20090128236A1
公开(公告)日：2009-05-21
申请号：US12360727
申请日：2009-01-27
申请人： Martin Paul Wilson
发明人： Martin Paul Wilson
IPC分类号： H03F1/00 , H02J3/12
CPC分类号： H03F1/0222 , H03F1/00 , H03F1/02 , H03F1/025 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/102 , H03F2200/331 , H03F2200/451 , H03F2200/504 , H03F2200/511
摘要： A radio frequency amplification stage comprising: an amplifier for receiving an input signal to be amplified and a power supply voltage; and a power supply voltage stage for supplying said power supply voltage, comprising: means for providing a reference signal representing the envelope of the input signal; means for selecting one of a plurality of supply voltage levels in dependence on the reference signal; and means for generating an adjusted selected power supply voltage, comprising an ac amplifier for amplifying a difference between the reference signal and one of the selected supply voltage level or the adjusted selected supply voltage level, and a summer for summing the amplified difference with the selected supply voltage to thereby generate the adjusted supply voltage.
摘要翻译：一种射频放大级，包括：放大器，用于接收待放大的输入信号和电源电压; 以及用于提供所述电源电压的电源电压级，包括：用于提供表示所述输入信号的包络的参考信号的装置; 用于根据参考信号选择多个电源电压电平中的一个的装置; 以及用于产生经调整的所选择的电源电压的装置，包括用于放大参考信号与所选择的电源电压电平或所调整的所选电源电压电平之一之间的差的交流放大器，以及用于将放大的差与所选择的电源电压相加的加法器供给电压，从而生成调整后的电源电压。

10. 发明公开

US20240015441A1 AV AMPLIFIER 审中-公开
公开(公告)号：US20240015441A1
公开(公告)日：2024-01-11
申请号：US18469969
申请日：2023-09-19
申请人： D&M Holdings, Inc.
发明人： Yoshiharu Imahama , Shunichi Tani
IPC分类号： H04R5/04 , H03F1/00 , H04R3/12 , H04S7/00
CPC分类号： H04R5/04 , H03F1/00 , H04R3/12 , H04S7/00 , G06F3/165
摘要： An AV amplifier contains an input unit to input digital data and an operation unit that receives a reproduction instruction. A switching unit switches whether to output the digital data input to a server interface unit or DSP in response to the reproduction instruction. The DSP processes the digital data output to obtain and output a two-channel signal, which the server interface unit transmits by the switching unit to a server and receives an audio signal from the server. An audio reproduction unit reproduces the server interface unit received audio signal and an audio signal output by the DSP. An output unit outputs the reproduced audio signal to each speaker and a control unit controls the switching unit and the server interface unit in response to the reproduction instruction from the user. The control unit controls the switching unit, when two-channel audio reproduction is instructed from the user.

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