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    Method of controlling filter time constant and filter circuit having the time constant control function based on the method
    1.
    发明授权
    Method of controlling filter time constant and filter circuit having the time constant control function based on the method 失效
    基于该方法控制滤波时间常数的方法和具有时间常数控制功能的滤波电路

    公开(公告)号：US5392456A

    公开(公告)日：1995-02-21

    申请号：US592340

    申请日：1990-10-03

    申请人： Isamu Mitomo ,  Nobuo Tsukamoto ,  Arata Nakagoshi ,  Jiroh Sakaguchi ,  Kazuo Yamakido ,  Hiroshi Noguchi ,  Atushi Hoshi

    发明人： Isamu Mitomo ,  Nobuo Tsukamoto ,  Arata Nakagoshi ,  Jiroh Sakaguchi ,  Kazuo Yamakido ,  Hiroshi Noguchi ,  Atushi Hoshi

    IPC分类号： H03H11/04 ,  H03H11/12 ,  H04B7/26 ,  H04B1/10

    CPC分类号： H03H11/1291

    摘要： A method of controlling the time constant of a filter for use in a radio receiver which receives a signal, transmitted from a transmitting station at a predetermined period, intermittently at the predetermined period and demodulates and delivers the received signal, a filter circuit having the time constant control function based on the method, and a radio receiver having the filter circuit. Preferably, the filter has its time constant switchable stepwise and specifically, parallel connection of capacitors or shortcircuiting of resistors is controlled by turning on/off switches. A controller within the filter circuit or the radio receiver performs control for applying a predetermined periodical signal (or standard pulse signal) to the filter and controlling the time constant of the filter in accordance with an output signal (or triangular pulse) during a first time zone within each operation interval for the intermittent reception and for filtering the signal from the transmitting station and causing a demodulating circuit to demodulate and deliver a filtered signal.

    摘要翻译： 一种控制无线电接收机中使用的滤波器的时间常数的方法，该无线电接收机接收以预定周期从发送站以预定周期间歇地发送的信号，并且对接收到的信号进行解调和传送，具有时间 基于该方法的恒定控制功能和具有滤波器电路的无线电接收机。 优选地，该滤波器的时间常数可逐步切换，具体地说，通过接通/断开开关来控制电容器的并联或电阻的短路。 滤波器电路或无线电接收机内的控制器执行用于将预定周期信号（或标准脉冲信号）施加到滤波器的控制，并且在第一时间内根据输出信号（或三角波脉冲）控制滤波器的时间常数 在间歇接收的每个操作间隔内，对来自发送站的信号进行滤波，并使解调电路解调并传送滤波信号。

    Circuit for setting an initial state after connection of a power supply
    3.
    发明授权
    Circuit for setting an initial state after connection of a power supply 失效
    连接电源后设定初始状态的电路

    公开(公告)号：US4019070A

    公开(公告)日：1977-04-19

    申请号：US645342

    申请日：1975-12-30

    申请人： Jiroh Sakaguchi ,  Hiroto Kawagoe

    发明人： Jiroh Sakaguchi ,  Hiroto Kawagoe

    IPC分类号： H03K17/22 ,  G06F1/24 ,  H03K3/356 ,  H03K3/286 ,  H03K3/353

    CPC分类号： H03K3/356008

    摘要： An initial state-setting circuit wherein a malfunction preventing transistor is connected in series with an input transistor of a flip-flop, and is rendered conductive a short time after closure of a power supply switch. Even when noise arises immediately after the closure of the power supply, no malfunction due to the noise is induced, since the malfunction preventing transistor is not yet conductive.

    摘要翻译： 一种初始状态设置电路，其中故障防止晶体管与触发器的输入晶体管串联连接，并且在电源开关闭合之后在短时间内导通。 即使在电源关闭后立即出现噪声，也不会引起由于噪声引起的故障，因为防止失灵晶体管尚未导通。

    Reference voltage generator
    5.
    发明授权
    Reference voltage generator 失效
    参考电压发生器

    公开(公告)号：US4454467A

    公开(公告)日：1984-06-12

    申请号：US399901

    申请日：1982-07-19

    申请人： Jiroh Sakaguchi

    发明人： Jiroh Sakaguchi

    IPC分类号： G05F3/24 ,  G05F3/26 ,  H01L27/088 ,  G05F3/08

    CPC分类号： H01L27/088 ,  G05F3/262

    摘要： A reference voltage generator includes a first n-channel MISFET which has a p.sup.+ -type polycrystalline silicon gate electrode, and second and third n-channel MISFETs which have n.sup.+ -type polycrystalline silicon gate electrodes. The first MISFET has its gate and source coupled in common. The second MISFET has its gate coupled to the drain of the first MISFET, and has its source coupled to an output terminal. The third MISFET is supplied across its gate and source with a voltage which is delivered to the output terminal. First and second bias currents to be supplied to the first and second MISFETs respectively are made levels proportional to the drain current of the third MISFET. As a result, the output voltage of the output terminal is made a level which is substantially in agreement with the difference between the threshold voltages of the first and second MISFETs. The output voltage of this circuit is allowed to exhibit favorable temperature characteristics by properly setting the ratio of the first bias current and the second bias current.

    摘要翻译： 参考电压发生器包括具有p +型多晶硅栅电极的第一n沟道MISFET以及具有n +型多晶硅栅电极的第二和第三n沟道MISFET。 第一个MISFET的栅极和源极耦合在一起。 第二MISFET的栅极耦合到第一MISFET的漏极，并且其源极耦合到输出端子。 第三MISFET通过其栅极和源极提供输出到输出端子的电压。 分别提供给第一和第二MISFET的第一和第二偏置电流被设为与第三MISFET的漏极电流成比例的电平。 结果，将输出端子的输出电压设为基本上与第一和第二MISFET的阈值电压之差一致的电平。 通过适当地设定第一偏置电流和第二偏置电流的比率，允许该电路的输出电压呈现出良好的温度特性。