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1. 发明申请

US20120068676A1 VOLTAGE GENERATION CIRCUIT 审中-公开
标题翻译：电压发生电路
公开(公告)号：US20120068676A1
公开(公告)日：2012-03-22
申请号：US13237006
申请日：2011-09-20
申请人： Norihiro Kawagishi , Nobuaki Tsuji , Toshio Maejima
发明人： Norihiro Kawagishi , Nobuaki Tsuji , Toshio Maejima
IPC分类号： G05F1/10
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A voltage generation circuit includes a voltage detection circuit that generates a detection voltage according to an output voltage, a reference voltage generation circuit that generates a reference voltage which changes periodically, a comparison circuit that generates a control signal according to a result of a comparison between the detection voltage and the reference voltage, wherein control pulses each having a pulse width according to the detection voltage are sequentially appeared in the control signal, and a driving pulse generation circuit that generates a driving pulse corresponding to the control pulse and supplies the generated driving pulse to a transistor connected to a DC power source when the pulse width of the control pulse exceeds a predetermined width, and stops generating the driving pulse when the pulse width of the control pulse becomes smaller than the predetermined width.
摘要翻译：电压产生电路包括产生根据输出电压的检测电压的电压检测电路，产生周期性变化的参考电压的基准电压产生电路，根据比较结果产生控制信号的比较电路检测电压和参考电压，其中在控制信号中顺序出现各自具有根据检测电压的脉冲宽度的控制脉冲，以及驱动脉冲产生电路，其产生与控制脉冲相对应的驱动脉冲并提供所产生的驱动当控制脉冲的脉冲宽度超过预定宽度时，连接到直流电源的晶体管脉冲，并且当控制脉冲的脉冲宽度变得小于预定宽度时停止产生驱动脉冲。

2. 发明申请

US20120068675A1 Voltage generation circuit 有权
标题翻译：电压发生电路
公开(公告)号：US20120068675A1
公开(公告)日：2012-03-22
申请号：US13200214
申请日：2011-09-21
申请人： Norihiro Kawagishi , Nobuaki Tsuji , Toshio Maejima
发明人： Norihiro Kawagishi , Nobuaki Tsuji , Toshio Maejima
IPC分类号： G05F1/46
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A voltage generation circuit includes a voltage detection circuit that generates a detection voltage according to an output voltage, a reference voltage generation circuit that generates a reference voltage which changes periodically, a comparison circuit that generates a control signal according to a result of a comparison between the detection voltage and the reference voltage, wherein control pulses each having a pulse width according to the detection voltage are sequentially appeared in the control signal, and a driving pulse generation circuit that generates a driving pulse corresponding to the control pulse and supplies the generated driving pulse to a transistor connected to a DC power source when the pulse width of the control pulse exceeds a predetermined width, and stops generating the driving pulse when the pulse width of the control pulse becomes smaller than the predetermined width.
摘要翻译：电压产生电路包括产生根据输出电压的检测电压的电压检测电路，产生周期性变化的参考电压的基准电压产生电路，根据比较结果产生控制信号的比较电路检测电压和参考电压，其中在控制信号中顺序出现各自具有根据检测电压的脉冲宽度的控制脉冲，以及驱动脉冲产生电路，其产生与控制脉冲相对应的驱动脉冲并提供所产生的驱动当控制脉冲的脉冲宽度超过预定宽度时，连接到直流电源的晶体管脉冲，并且当控制脉冲的脉冲宽度变得小于预定宽度时停止产生驱动脉冲。

3. 发明授权

US08653803B2 Voltage generation circuit 有权
标题翻译：电压发生电路
公开(公告)号：US08653803B2
公开(公告)日：2014-02-18
申请号：US13200214
申请日：2011-09-21
申请人： Norihiro Kawagishi , Nobuaki Tsuji , Toshio Maejima
发明人： Norihiro Kawagishi , Nobuaki Tsuji , Toshio Maejima
IPC分类号： G05F1/565 , G05F1/618
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A voltage generation circuit includes a voltage detection circuit that generates a detection voltage according to an output voltage, a reference voltage generation circuit that generates a reference voltage which changes periodically, a comparison circuit that generates a control signal according to a result of a comparison between the detection voltage and the reference voltage, wherein control pulses each having a pulse width according to the detection voltage are sequentially appeared in the control signal, and a driving pulse generation circuit that generates a driving pulse corresponding to the control pulse and supplies the generated driving pulse to a transistor connected to a DC power source when the pulse width of the control pulse exceeds a predetermined width, and stops generating the driving pulse when the pulse width of the control pulse becomes smaller than the predetermined width.
摘要翻译：电压产生电路包括产生根据输出电压的检测电压的电压检测电路，产生周期性变化的参考电压的基准电压产生电路，根据比较结果产生控制信号的比较电路检测电压和参考电压，其中在控制信号中顺序出现各自具有根据检测电压的脉冲宽度的控制脉冲，以及驱动脉冲产生电路，其产生与控制脉冲相对应的驱动脉冲并提供所产生的驱动当控制脉冲的脉冲宽度超过预定宽度时，连接到直流电源的晶体管脉冲，并且当控制脉冲的脉冲宽度变得小于预定宽度时停止产生驱动脉冲。

4. 发明申请

US20110140941A1 Voltage adder circuit and D/A converter circuit 有权
标题翻译：电压加法器电路和D / A转换电路
公开(公告)号：US20110140941A1
公开(公告)日：2011-06-16
申请号：US12928529
申请日：2010-12-14
申请人： Nobuaki Tsuji , Toshio Maejima
发明人： Nobuaki Tsuji , Toshio Maejima
IPC分类号： H03M1/66 , G06G7/14
CPC分类号： H03F3/45183 , H03F3/45475 , H03F2203/45138 , H03F2203/45674
摘要： A voltage adder circuit includes an amplifier circuit having a first operational amplifier and into which a first voltage is input, a circuit that supplies an output current to the amplifier circuit, and a current providing section that detects the output current of the circuit and supplies an output current equal to the output current of the circuit in magnitude so that the output current of the circuit is prevented from inputting to or outputting from the first operational amplifier through an output terminal of the first operational amplifier. A second voltage is input into the circuit.
摘要翻译：电压加法器电路包括具有第一运算放大器并且输入第一电压的放大器电路，向放大器电路提供输出电流的电路以及检测电路的输出电流并提供电流的电流提供部分输出电流等于电路的输出电流的大小，从而防止电路的输出电流通过第一运算放大器的输出端输入或从第一运算放大器输出。第二电压被输入到电路中。

5. 发明授权

US08232832B2 Voltage adder circuit and D/A converter circuit 有权
标题翻译：电压加法器电路和D / A转换电路
公开(公告)号：US08232832B2
公开(公告)日：2012-07-31
申请号：US12928529
申请日：2010-12-14
申请人： Nobuaki Tsuji , Toshio Maejima
发明人： Nobuaki Tsuji , Toshio Maejima
IPC分类号： G06G7/14
CPC分类号： H03F3/45183 , H03F3/45475 , H03F2203/45138 , H03F2203/45674
摘要： A voltage adder circuit includes an amplifier circuit having a first operational amplifier and into which a first voltage is input, a circuit that supplies an output current to the amplifier circuit, and a current providing section that detects the output current of the circuit and supplies an output current equal to the output current of the circuit in magnitude so that the output current of the circuit is prevented from inputting to or outputting from the first operational amplifier through an output terminal of the first operational amplifier. A second voltage is input into the circuit.
摘要翻译：电压加法器电路包括具有第一运算放大器并且输入第一电压的放大器电路，向放大器电路提供输出电流的电路以及检测电路的输出电流并提供电流的电流提供部分输出电流等于电路的输出电流的大小，从而防止电路的输出电流通过第一运算放大器的输出端输入或从第一运算放大器输出。第二电压被输入到电路中。

6. 发明申请

US20090115388A1 DC/DC converter 审中-公开
标题翻译： DC / DC转换器
公开(公告)号：US20090115388A1
公开(公告)日：2009-05-07
申请号：US12288094
申请日：2008-10-16
申请人： Masato Miyazaki , Toshio Maejima
发明人： Masato Miyazaki , Toshio Maejima
IPC分类号： G05F1/00
CPC分类号： H02M3/158
摘要： A DC/DC converter is constituted of a switching element (e.g., a MOS transistor), an LC low-pass filter constituted of an inductor and a capacitor, and a control circuit for controlling the on/off timing of the switching element such that the output voltage is set to a predetermined voltage value. A series circuit (serving as a snubber circuit) constituted of a resistor and a switch is further connected in parallel with the inductor. The control circuit closes the switch so that the resistor is connected in parallel with the inductor in a resonance mode of the LC low-pass filter. Thus, it is possible to dissipate energy accumulated in the inductor in a short time without using a relatively large circuit scale, thus avoiding the occurrence of ringing.
摘要翻译： DC / DC转换器由开关元件（例如，MOS晶体管），由电感器和电容器构成的LC低通滤波器和用于控制开关元件的接通/断开定时的控制电路构成，使得输出电压被设定为预定的电压值。由电阻器和开关构成的串联电路（用作缓冲电路）还与电感器并联连接。控制电路关闭开关，使得电阻器以LC低通滤波器的谐振模式与电感器并联连接。因此，可以在短时间内消耗积聚在电感器中的能量，而不用相对较大的电路规模，从而避免发生振铃。

7. 发明申请

US20080150635A1 Class-D amplifier 失效
标题翻译： D类放大器
公开(公告)号：US20080150635A1
公开(公告)日：2008-06-26
申请号：US12004373
申请日：2007-12-20
申请人： Toshio Maejima
发明人： Toshio Maejima
IPC分类号： H03F3/217
CPC分类号： H03F3/2175
摘要： A PWM modulator adds first and second input signals to each other, and performs PWM modulation processing for outputting a PWM-modulated pulse whose pulse width is modulated according to a result of addition. A shift register delays a bit stream acquired from a ΔΣ modulator, thereby generating two bit streams having a time difference which is one-half a period of PWM modulation processing, and the bit streams are supplied at first and second input signals to the PWM modulator.
摘要翻译： PWM调制器将第一和第二输入信号彼此相加，并且执行PWM调制处理，用于输出根据加法结果来调制脉冲宽度的PWM调制脉冲。移位寄存器延迟从DeltaSigma调制器获取的比特流，从而产生具有PWM调制处理周期的一半的时间差的两个比特流，并且将比特流以第一和第二输入信号提供给PWM调制器。

8. 发明申请

US20050162223A1 Class-D amplifier 失效
标题翻译： D类放大器
公开(公告)号：US20050162223A1
公开(公告)日：2005-07-28
申请号：US10967807
申请日：2004-10-18
申请人： Toshio Maejima
发明人： Toshio Maejima
IPC分类号： H03F3/217 , H03F3/38
CPC分类号： H03F3/2171
摘要： A class-D amplifier for pulse-width-modulating an analog input signal to output a pulse-width-modulated signal, includes: a differentiating circuit for differentiating the pulse-width-modulated signal of the class-D amplifier; and a negative feedback circuit for feeding back the differentiated signal of the differentiating circuit to an input side of the class-D amplifier in a negative feedback manner.
摘要翻译：一种用于对模拟输入信号进行脉宽调制以输出脉宽调制信号的D类放大器，包括：用于区分D类放大器的脉宽调制信号的微分电路; 以及负反馈电路，用于以负反馈的方式将差分电路的微分信号反馈到D类放大器的输入侧。

9. 发明授权

US06788792B1 Device for amplitude adjustment and rectification made with MOS technology 失效
公开(公告)号：US06788792B1
公开(公告)日：2004-09-07
申请号：US09339202
申请日：1999-06-24
申请人： Toshio Maejima , Masao Noro
发明人： Toshio Maejima , Masao Noro
IPC分类号： H03G700
CPC分类号： H03G3/3026 , H03K7/08
摘要： An amplitude adjustment device such as an amplitude compression device and amplitude expansion device is basically configured by a PWM modulator, a demodulator and an amplitude detector. Herein, the PWM modulator effects pulse-width modulation on an input signal to produce a pulse-width modulated signal, which is demodulated by the demodulator to produce an output signal. In addition, the amplitude detector detects an amplitude of a demodulated signal or an amplitude of the input signal to produce a control signal. A modulation factor of the pulse-width modulation is adjusted based on the control signal. In the case of the amplitude compression device, an input/output gain is changed inversely proportional to the amplitude of the input signal or amplitude of the output signal. Thus, it is possible to compress a dynamic range with respect to input/output characteristics. A full-wave rectifier, applicable to the amplitude adjustment device, is mainly configured by an inversion amplifier, an amplifier and an output section. Herein, the inversion amplifier amplifies an input signal with a gain of “−1”, while the amplifier amplifies it with a gain of “1”. Outputs of the amplifiers differ from each other in phases by 180°. The output section produces a full-wave rectified signal based on the outputs of the amplifiers. Incidentally, all of the amplifiers and output section are configured using field-effect transistors without using diodes being externally connected. Hence, it is possible to manufacture the full-wave rectifier in a form of an IC in accordance with the MOS process with ease.

10. 发明授权

US06696877B2 Level shift circuit 有权
标题翻译：电平移位电路
公开(公告)号：US06696877B2
公开(公告)日：2004-02-24
申请号：US10137573
申请日：2002-05-02
申请人： Toshio Maejima , Akihiko Toda
发明人： Toshio Maejima , Akihiko Toda
IPC分类号： H03L500
CPC分类号： H03F3/45475 , H03F1/30
摘要： Level shift circuit includes an operational amplifier, and an input resistor having one end connected to an output terminal of an amplifier circuit and the other end connected to the inverted input terminal of the operational amplifier. The level shift circuit further includes a level-shifting resistor of a resistance value R0 having one end connected to the inverted input terminal of the operational amplifier and the other end connected to a ground, and a feedback resistor of a resistance value R1. Reference voltage Vref is applied to the noninverted input terminal of the operational amplifier. Output signal of the level shift circuit represents the output of the amplifier circuit having been shifted in level by a predetermined amount. If the amplitude center level of the output signal from the level shift circuit is represented by Vc, the level shift amount &Dgr;V can be expressed as &Dgr;V=Vc−Vref=(R1/R0)Vref With such arrangements, the level shift circuit can operate appropriately using only one reference voltage, without requiring any external capacitor.
摘要翻译：电平移位电路包括运算放大器和输入电阻器，其一端连接到放大器电路的输出端子，另一端连接到运算放大器的反相输入端子。电平移位电路还包括电阻值R0的电平移动电阻，其一端连接到运算放大器的反相输入端，另一端连接到地，以及电阻值R1的反馈电阻。参考电压Vref施加到运算放大器的非反相输入端。电平移位电路的输出信号表示放大器电路的输出已经在电平上移动预定量。如果来自电平移位电路的输出信号的幅度中心电平由Vc表示，则电平偏移量DeltaV可以表示为这样的结构，电平移位电路可以仅使用一个参考电压适当地进行操作，而不需要任何外部电容器。

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