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11. 发明授权

US08810078B2 Analog current output circuit 有权
标题翻译：模拟电流输出电路
公开(公告)号：US08810078B2
公开(公告)日：2014-08-19
申请号：US13141203
申请日：2008-12-26
申请人： Seiichi Saito , Hirokazu Nomoto , Yoshihiro Akeboshi
发明人： Seiichi Saito , Hirokazu Nomoto , Yoshihiro Akeboshi
IPC分类号： H01H9/54
CPC分类号： G05F1/56 , H02M3/28 , H02M2001/0032 , H02M2001/0045 , Y02B70/16 , Y10T307/944
摘要： In the analog current output circuit according to the present invention, a rising start position and a tilt of an internal control voltage are set such that it crosses, at the maximum of an analog output current, a load end voltage obtained when the resistance of a load is the one near the center of a specification range. According to a comparison result in a comparator, a switch causes a DC/DC converter to input a high reference voltage and causes an output transistor to output a high power supply voltage when the internal control voltage is smaller than the load end voltage and causes the DC/DC converter to input a low reference voltage and causes the output transistor to output a low power supply voltage when the internal control voltage is larger than the load end voltage.
摘要翻译：在根据本发明的模拟电流输出电路中，设置内部控制电压的上升起始位置和倾斜，使得它以模拟输出电流的最大值跨过当电流为负载是接近规格范围中心的负载。根据比较器的比较结果，当内部控制电压小于负载端电压时，开关使DC / DC转换器输入高参考电压并使输出晶体管输出高电源电压，并且使得 DC / DC转换器输入低参考电压，并且当内部控制电压大于负载端电压时，使输出晶体管输出低电源电压。

12. 发明授权

US08594591B2 Transmission system 有权
标题翻译：传输系统
公开(公告)号：US08594591B2
公开(公告)日：2013-11-26
申请号：US13514008
申请日：2009-12-17
申请人： Yoshihiro Akeboshi , Hideyuki Ohashi , Tetsuro Komura
发明人： Yoshihiro Akeboshi , Hideyuki Ohashi , Tetsuro Komura
IPC分类号： H04B15/00
CPC分类号： H04L27/08 , H03G11/02
摘要： Provided is a transmission system capable of improving the SN ratio for noise superimposed on a transmission line and extending the dynamic range. The transmission system transmits a signal between a transmitter (1) and a receiver (3), which are connected to each other via a transmission line (2). The transmitter (1) includes a transmission amplifier (11) for stepping up an amplitude of an input signal. The receiver (3) includes: an amplitude comparison circuit (31) for attenuating the amplitude of the signal, which is output from the transmission amplifier (11) and input via the transmission line (2), and comparing the attenuated amplitude and a reference voltage; a variable attenuation circuit (32) for outputting, when the attenuated amplitude is larger than the reference voltage, the signal input to the receiver (3) after attenuating the amplitude of the signal, and for outputting, when the attenuated amplitude is smaller than the reference voltage, the signal input to the receiver (3) without attenuating the amplitude of the signal; and an amplitude limiting circuit (33) for clipping the amplitude of the signal output from the variable attenuation circuit (32) at a threshold voltage.
摘要翻译：提供了能够提高叠加在传输线上的噪声的SN比并延长动态范围的传输系统。传输系统经由传输线（2）彼此连接的发射机（1）和接收机（3）之间传输信号。发射机（1）包括用于加强输入信号幅度的发射放大器（11）。接收器（3）包括：幅度比较电路（31），用于衰减从发送放大器（11）输出并通过传输线（2）输入的信号的振幅，并将衰减幅度和参考值电压; 一个可变衰减电路（32），当所述衰减幅度大于所述参考电压时，在衰减所述信号幅度之后输出到所述接收器（3）的信号，并且当衰减幅度小于参考电压，信号输入到接收器（3）而不衰减信号的幅度; 以及限幅电路（33），用于在阈值电压下限幅从可变衰减电路（32）输出的信号的振幅。

13. 发明授权

US07990302B2 Analog input device 有权
标题翻译：模拟输入设备
公开(公告)号：US07990302B2
公开(公告)日：2011-08-02
申请号：US12595963
申请日：2008-05-09
申请人： Seiichi Saito , Yoshihiro Akeboshi
发明人： Seiichi Saito , Yoshihiro Akeboshi
IPC分类号： H03M1/12
CPC分类号： H03M1/1245 , H03K17/005 , H03K17/161 , H03K17/691 , H03M1/0827 , H03M1/1215
摘要： An amplifier for amplifying a pulse-like signal output from a secondary side of an isolating transformer, a capacitor connected to a negative feedback loop across the input and output of the amplifier, and a timing control circuit for controlling an FET into a closed state, then controlling a switch into a closed state, and after that controlling the switch into an open state at timing simultaneously with the FET or earlier than the FET are provided, and when the switch is controlled into the open state, an AD converter converts the output signal of the amplifier to a digital signal.
摘要翻译：放大器，用于放大从隔离变压器的次级侧输出的脉冲状信号，连接到放大器的输入和输出端的负反馈环路的电容器，以及用于将FET控制为闭合状态的定时控制电路，然后将开关控制到关闭状态，之后在与FET同时或在FET之前控制开关处于断开状态，并且当开关控制到开启状态时，AD转换器将输出放大器的信号到数字信号。

14. 发明授权

US07898315B2 Analog multiplexer with insulation power supply 有权
标题翻译：具有绝缘电源的模拟多路复用器
公开(公告)号：US07898315B2
公开(公告)日：2011-03-01
申请号：US12525556
申请日：2008-04-14
申请人： Seiichi Saito , Yoshihiro Akeboshi , Hirokazu Nomoto
发明人： Seiichi Saito , Yoshihiro Akeboshi , Hirokazu Nomoto
IPC分类号： H03K17/00
CPC分类号： H03K17/002 , G01R1/206 , G01R19/2506 , H03K17/005 , H03K17/691 , H03M1/08 , H03M1/1225 , H03M1/1245
摘要： An analog multiplexer with an insulated power supply includes: an analog signal transformer receiving an analog signal input in its primary winding via an FET, and ON/OFF driving the FET to generate a pulse with an amplitude of the analog signal in its secondary winding; a drive transformer receiving a drive pulse input in its primary winding via an FET to generate a pulse turning ON/OFF the FET in its secondary winding; an inhibit generation circuit generating an inhibit pulse having a wider pulse width than that of the drive pulse; an AND gate determining a logical product of a continuous pulse from a continuous pulse generation circuit and the inhibit pulse to obtain a power supply pulse train; and a rectifying/smoothing circuit obtaining a direct current voltage corresponding to the power supply pulse train to apply the direct current voltage to the primary winding of the transformer through high resistance.
摘要翻译：具有绝缘电源的模拟多路复用器包括：模拟信号变压器，其经由FET接收在其初级绕组中输入的模拟信号，以及驱动FET的ON / OFF以在其次级绕组中产生具有模拟信号幅度的脉冲; 驱动变压器经由FET接收其初级绕组中的驱动脉冲输入，以产生在其次级绕组中接通/断开FET的脉冲; 禁止产生电路，产生具有比驱动脉冲宽的脉冲宽度的禁止脉冲; AND门，其确定来自连续脉冲发生电路的连续脉冲和禁止脉冲的逻辑积，以获得电源脉冲串; 以及整流/平滑电路，获得与电源脉冲串相对应的直流电压，以通过高电阻将直流电压施加到变压器的初级绕组。

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