公开(公告)号：US4001384A

公开(公告)日：1977-01-04

申请号：US364416

申请日：1973-05-29

申请人： Junji Iwakura ,  Kimihiko Sato ,  Hisashi Fujii ,  Yoshihiro Hashimoto ,  Shigeo Ono ,  Shozaburo Watanabe ,  Akio Yokoyama

发明人： Junji Iwakura ,  Kimihiko Sato ,  Hisashi Fujii ,  Yoshihiro Hashimoto ,  Shigeo Ono ,  Shozaburo Watanabe ,  Akio Yokoyama

IPC分类号： B01D53/50 ,  B01D53/81 ,  C01D5/00 ,  C01B17/60

CPC分类号： B01D53/505 ,  B01D53/501

摘要： A process for the recovery of oxides of sulfur from combustion waste gases, which comprises cooling said waste gases and forming entrained particles of sodium compounds, consisting essentially of sodium carbonate, by spray contact with sodium hydroxide or sodium carbonate, converting sodium carbonate in the particles to sodium sulfate by passing said oxides of sulphur containing waste gases and said sodium compound particles over plate-like packings, whereby said particles are comminuted to a finer particle size form so as to enhance the reaction of said sulfate particles with the oxides of sulfur in said waste gases, collecting entrained particles of said sodium compounds in a dust collector.

公开(公告)号：US07474244B2

公开(公告)日：2009-01-06

申请号：US11889129

申请日：2007-08-09

申请人： Akira Kawabe ,  Akio Yokoyama

发明人： Akira Kawabe ,  Akio Yokoyama

IPC分类号： H03M1/66

CPC分类号： H03M1/002 ,  H03M1/745

摘要： A digital analog converter includes a current conversion section and a voltage conversion section. The current conversion section has a first output terminal and a second output terminal. The first output terminal outputs a first current and a second output terminal outputs a second current, the first current varying in value according to inputted digital data, the sum of the first current and the second current becoming a constant current. The voltage conversion section converts the first current to a corresponding first voltage and produces an offset voltage on the basis of the constant current and outputs the sum of the first voltage and the offset voltage as an output voltage.

摘要翻译： 数字模拟转换器包括电流转换部分和电压转换部分。 电流转换部分具有第一输出端和第二输出端。 第一输出端子输出第一电流，第二输出端子输出第二电流，第一电流根据输入的数字数据变化值，第一电流和第二电流的和变为恒定电流。 电压转换部将第一电流转换为对应的第一电压，并根据恒定电流产生偏移电压，并输出第一电压和偏移电压的和作为输出电压。

公开(公告)号：US20060262230A1

公开(公告)日：2006-11-23

申请号：US11431324

申请日：2006-05-10

申请人： Manabu Ookubo ,  Akio Yokoyama ,  Masayuki Ozasa ,  Takao Soramoto

发明人： Manabu Ookubo ,  Akio Yokoyama ,  Masayuki Ozasa ,  Takao Soramoto

IPC分类号： H04N5/50

CPC分类号： H04B1/28 ,  H04N5/4446

摘要： The receiver IF system or the signal selection device of the present invention includes: frequency converters that obtain polyphase intermediate-frequency signals for suppressing an image component of an RF signal from an input signal; a polyphase filter for removing an image component from the polyphase intermediate-frequency signals; and a band-pass filter composed of an N-pass filter for selecting a channel of an intermediate-frequency signal that is obtained by removing an image component from an output of the polyphase filter. An image rejection filter and a channel selection filter can be integrated at low cost with higher performance, and an area of a substrate for reception can be reduced.

摘要翻译： 本发明的接收机IF系统或信号选择装置包括：频率转换器，其从输入信号获得用于抑制RF信号的图像分量的多相中频信号; 用于从所述多相中频信号中去除图像分量的多相滤波器; 以及带通滤波器，其由用于选择通过从多相滤波器的输出去除图像分量而获得的中频信号的通道的N通滤波器组成。 可以以低成本，高性能地集成图像抑制滤波器和通道选择滤波器，并且可以减少用于接收的基板的面积。

公开(公告)号：US07271652B2

公开(公告)日：2007-09-18

申请号：US11730976

申请日：2007-04-05

申请人： Masayuki Ozasa ,  Akio Yokoyama

发明人： Masayuki Ozasa ,  Akio Yokoyama

IPC分类号： H03F3/45

CPC分类号： H03F3/211 ,  H03F3/45183 ,  H03F3/4521 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/258 ,  H03F2200/78 ,  H03F2203/45138 ,  H03F2203/45366 ,  H03F2203/45466 ,  H03F2203/45506 ,  H03F2203/45612 ,  H03F2203/7203 ,  H03F2203/7236 ,  H03G1/0088 ,  H03G3/301

摘要： In a differential amplifier and an operational amplifier each for amplifying a signal, a differential signal composed of first and second signals is inputted to a couple of input terminals (1, 2). When the voltage of the first signal is, e.g., less than the voltage value of a reference voltage source (15), a comparator (13) senses it and a switch circuit (12) switches to a first current source (6) and a current from a third current source (11) flows into the first current source (6) so that a current is inhibited from flowing in the first differential couple (4). As a result, the inputted differential signal is amplified and outputted only through a second differential couple (5). In a situation in which the voltage of the first signal exceeds the voltage of the reference voltage source (15), on the other hand, the switch circuit (12) switches to a current source (7) so that the inputted differential signal is amplified and outputted only through the first differential couple (4). As a result, a gain is equal over the entire range of input operating voltage and a high-speed operation is performed.

公开(公告)号：US07084797B2

公开(公告)日：2006-08-01

申请号：US10973254

申请日：2004-10-27

申请人： Akio Yokoyama ,  Hitoshi Kobayashi ,  Fumihito Inukai

发明人： Akio Yokoyama ,  Hitoshi Kobayashi ,  Fumihito Inukai

IPC分类号： H03M3/00

CPC分类号： H03M3/418

摘要： A first second- or higher-order delta sigma modulator and a second second- or higher-order delta sigma modulator having a notch characteristic are cascaded together, and a delayed signal of the output of the first delta sigma modulator and a differential signal of the output of the second delta sigma modulator are added together. The amount of feedback from the output portion to the input portion of the first delta sigma modulator and the amount of feedback from the output portion to the input portion of the second delta sigma modulator are made the same.

摘要翻译： 具有陷波特性的第一第二或更高阶ΔΣ调制器和第二二阶或更高阶ΔΣ调制器级联在一起，并且第一ΔΣ调制器的输出的延迟信号和 将第二ΔΣ调制器的输出相加在一起。 使得从第一Δ-Σ调制器的输出部分到输入部分的反馈量和从第二ΔΣ调制器的输出部分到输入部分的反馈量相同。

公开(公告)号：US07528659B2

公开(公告)日：2009-05-05

申请号：US11963944

申请日：2007-12-24

申请人： Akio Yokoyama ,  Makoto Ikuma

发明人： Akio Yokoyama ,  Makoto Ikuma

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/45659 ,  H03F2203/45008 ,  H03F2203/45681

摘要： An auxiliary current source is provided that includes MOS transistors feeding startup auxiliary current to the input portion of an output common mode voltage generation circuit amplifying the output of a differential amplifier and generating an output common voltage, and a correction current source is provided that includes MOS transistors feeding correction current corresponding to the auxiliary current to a common mode feedback comparator. Thereby, a control loop that controls the output common voltage to a predetermined voltage even when the input of the differential amplifier is outside the dynamic range at the beginning is correctly started up, thereby stabilizing the output common voltage at a desired voltage.

摘要翻译： 提供辅助电流源，其包括MOS晶体管，其将启动辅助电流馈送到放大差分放大器的输出并产生输出公共电压的输出共模电压产生电路的输入部分，并且提供包括MOS的校正电流源 晶体管馈送对应于辅助电流的校正电流到共模反馈比较器。 因此，即使在差分放大器的输入在开始的动态范围之外的情况下，也可以正确启动将输出公共电压控制为预定电压的控制回路，从而将输出公共电压稳定在期望的电压。

公开(公告)号：US20080157873A1

公开(公告)日：2008-07-03

申请号：US11963944

申请日：2007-12-24

申请人： Akio Yokoyama ,  Makoto Ikuma

发明人： Akio Yokoyama ,  Makoto Ikuma

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/45659 ,  H03F2203/45008 ,  H03F2203/45681

摘要： An auxiliary current source is provided that includes MOS transistors feeding startup auxiliary current to the input portion of an output common mode voltage generation circuit amplifying the output of a differential amplifier and generating an output common voltage, and a correction current source is provided that includes MOS transistors feeding correction current corresponding to the auxiliary current to a common mode feedback comparator. Thereby, a control loop that controls the output common voltage to a predetermined voltage even when the input of the differential amplifier is outside the dynamic range at the beginning is correctly started up, thereby stabilizing the output common voltage at a desired voltage.

摘要翻译： 提供辅助电流源，其包括MOS晶体管，其将启动辅助电流馈送到放大差分放大器的输出并产生输出公共电压的输出共模电压产生电路的输入部分，并且提供包括MOS的校正电流源 晶体管馈送对应于辅助电流的校正电流到共模反馈比较器。 因此，即使在差分放大器的输入在开始的动态范围之外的情况下，也可以正确启动将输出公共电压控制为预定电压的控制回路，从而将输出公共电压稳定在期望的电压。

公开(公告)号：US07116170B2

公开(公告)日：2006-10-03

申请号：US10510388

申请日：2003-10-08

申请人： Masayuki Ozasa ,  Akio Yokoyama

发明人： Masayuki Ozasa ,  Akio Yokoyama

IPC分类号： H03F3/45

CPC分类号： H03F3/211 ,  H03F3/45183 ,  H03F3/4521 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/258 ,  H03F2200/78 ,  H03F2203/45138 ,  H03F2203/45366 ,  H03F2203/45466 ,  H03F2203/45506 ,  H03F2203/45612 ,  H03F2203/7203 ,  H03F2203/7236 ,  H03G1/0088 ,  H03G3/301

摘要： In a differential amplifier and an operational amplifier each for amplifying a signal, a differential signal composed of first and second signals is inputted to a couple of input terminals (1, 2). When the voltage of the first signal is, e.g., less than the voltage value of a reference voltage source (15), a comparator (13) senses it and a switch circuit (12) switches to a first current source (6) and a current from a third current source (11) flows into the first current source (6) so that a current is inhibited from flowing in the first differential couple (4). As a result, the inputted differential signal is amplified and outputted only through a second differential couple (5). In a situation in which the voltage of the first signal exceeds the voltage of the reference voltage source (15), on the other hand, the switch circuit (12) switches to a current source (7) so that the inputted differential signal is amplified and outputted only through the first differential couple (4). As a result, a gain is equal over the entire range of input operating voltage and a high-speed operation is performed.

摘要翻译： 在用于放大信号的差分放大器和运算放大器中，由第一和第二信号组成的差分信号被输入到一对输入端子（1,2）。 当第一信号的电压例如小于参考电压源（15）的电压值时，比较器（13）感测它，并且开关电路（12）切换到第一电流源（6）和 来自第三电流源（11）的电流流入第一电流源（6），使得电流被禁止在第一差分耦合（4）中流动。 结果，输入的差分信号仅通过第二差分耦合（5）被放大和输出。 另一方面，在第一信号的电压超过参考电压源（15）的电压的情况下，开关电路（12）切换到电流源（7），使得输入的差分信号被放大 并且仅通过第一差分耦合（4）输出。 结果，在整个输入工作电压范围内的增益相等，并且执行高速操作。

公开(公告)号：US20050151587A1

公开(公告)日：2005-07-14

申请号：US10510388

申请日：2003-10-08

申请人： Masayuki Ozasa ,  Akio Yokoyama

发明人： Masayuki Ozasa ,  Akio Yokoyama

IPC分类号： H03F3/45 ,  H03F3/68 ,  H03F3/72 ,  H03G1/00 ,  H03G3/30

CPC分类号： H03F3/211 ,  H03F3/45183 ,  H03F3/4521 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/258 ,  H03F2200/78 ,  H03F2203/45138 ,  H03F2203/45366 ,  H03F2203/45466 ,  H03F2203/45506 ,  H03F2203/45612 ,  H03F2203/7203 ,  H03F2203/7236 ,  H03G1/0088 ,  H03G3/301

摘要： In a differential amplifier and an operational amplifier each for amplifying a signal, a differential signal composed of first and second signals is inputted to a couple of input terminals (1, 2). When the voltage of the first signal is, e.g., less than the voltage value of a reference voltage source (15), a comparator (13) senses it and a switch circuit (12) switches to a first current source (6) and a current from a third current source (11) flows into the first current source (6) so that a current is inhibited from flowing in the first differential couple (4). As a result, the inputted differential signal is amplified and outputted only through a second differential couple (5). In a situation in which the voltage of the first signal exceeds the voltage of the reference voltage source (15), on the other hand, the switch circuit (12) switches to a current source (7) so that the inputted differential signal is amplified and outputted only through the first differential couple (4). As a result, a gain is equal over the entire range of input operating voltage and a high-speed operation is performed.

摘要翻译： 在用于放大信号的差分放大器和运算放大器中，由第一和第二信号组成的差分信号被输入到一对输入端子（1,2）。 当第一信号的电压例如小于参考电压源（15）的电压值时，比较器（13）感测它，并且开关电路（12）切换到第一电流源（6）和 来自第三电流源（11）的电流流入第一电流源（6），使得电流被禁止在第一差分耦合（4）中流动。 结果，输入的差分信号仅通过第二差分耦合（5）被放大和输出。 另一方面，在第一信号的电压超过参考电压源（15）的电压的情况下，开关电路（12）切换到电流源（7），使得输入的差分信号被放大 并且仅通过第一差分耦合（4）输出。 结果，在整个输入工作电压范围内的增益相等，并且执行高速操作。

公开(公告)号：US5012201A

公开(公告)日：1991-04-30

申请号：US426229

申请日：1989-10-25

申请人： Yoichi Morita ,  Hiroshi Komori ,  Akio Yokoyama

发明人： Yoichi Morita ,  Hiroshi Komori ,  Akio Yokoyama

IPC分类号： H03H11/46

CPC分类号： H03H11/46

摘要： A variable impedance circuit includes a first differential amplifier circuit having an input terminal pair, an output terminal pair and a capacitive element connected between the emitters of a transistor pair. The variable impedance circuit further inclludes a second differential amplifier circuit having an input terminal pair and an output terminal pair. The output terminal pair of the first differential amplifier circuit is connected to the input terminal pair of the second differential amplifier circuit. Furthermore, the output terminal pair of the second differential amplifier circuit is connected to the input terminal pair of the first differential amplifier circuit.

摘要翻译： 可变阻抗电路包括具有输入端子对的第一差分放大器电路，连接在晶体管对的发射极之间的输出端子对和电容元件。 可变阻抗电路还包括具有输入端子对和输出端子对的第二差分放大器电路。 第一差分放大器电路的输出端子对连接到第二差分放大器电路的输入端子对。 此外，第二差分放大器电路的输出端子对连接到第一差分放大器电路的输入端子对。