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21 条记录 (耗时 0.031 秒)

    Switched-capacitor filter
    1.
    发明授权
    Switched-capacitor filter 失效
    开关电容滤波器

    公开(公告)号：US4333064A

    公开(公告)日：1982-06-01

    申请号：US152558

    申请日：1980-05-23

    申请人： Seiji Kato ,  Norio Ueno ,  Mitsuo Kakuishi ,  Akihiko Ito ,  Atsushi Iwata

    发明人： Seiji Kato ,  Norio Ueno ,  Mitsuo Kakuishi ,  Akihiko Ito ,  Atsushi Iwata

    IPC分类号： H03H19/00

    CPC分类号： H03H19/004

    摘要： A switched-capacitor filter provided with, at its input stage, a prefilter comprised only of a plurality of additional switched capacitors together with a switched capacitor common to the switched-capacitor filter. The switched capacitor common to the switched-capacitor filter is driven by primary clock pulses having a period T, while the additional switched capacitors are sequentially driven by secondary clock pulse groups. Each of the secondary clock pulse groups has the same period T, and the phases of the second clock pulse groups are shifted by T/2.sup.k, 2T/2.sup.k, 3T/2.sup.k . . . (2.sup.k -1)T/2.sup.k with respect to the first clock pulses (k is a positive integer). The sampled and held signals in the switched capacitors are supplied synchronously to the switched-capacitor filter.

    摘要翻译： 一种开关电容滤波器，在其输入级设有仅由多个附加开关电容器组成的预滤波器，以及开关电容滤波器公共的开关电容器。 开关电容滤波器公共的开关电容器由具有周期T的主时钟脉冲驱动，而附加开关电容器由次级时钟脉冲组依次驱动。 每个次级时钟脉冲组具有相同的周期T，并且第二时钟脉冲组的相位移位T / 2k，2T / 2k，3T / 2k。 。 。 （2k-1）T / 2k相对于第一时钟脉冲（k为正整数）。 开关电容器中的采样保持信号与开关电容滤波器同步地提供。

    Adjustable attenuator circuit
    2.
    发明授权
    Adjustable attenuator circuit 失效
    可调衰减器电路

    公开(公告)号：US4468749A

    公开(公告)日：1984-08-28

    申请号：US292275

    申请日：1981-08-12

    申请人： Seiji Kato ,  Norio Ueno ,  Mitsuo Kakuishi

    发明人： Seiji Kato ,  Norio Ueno ,  Mitsuo Kakuishi

    IPC分类号： H03H19/00 ,  H03G3/00

    CPC分类号： H03H19/004

    摘要： An adjustable attenuator circuit in which sampled electric charges are partially transferred from a sampling capacitor to a charge dividing capacitor during a short time within each sampling period, and electric charges stored in the charge dividing capacitor are additively transferred to an integrating capacitor or are discharged to ground according to the content of a weighting coefficient which determines the attenuation factor of the adjustable attenuator circuit.

    摘要翻译： 一种可调衰减器电路，其中在每个采样周期内短时间内采样电荷被部分地从采样电容器转移到充电分压电容器，并且存储在电荷分配电容器中的电荷被相加地传递到积分电容器或被放电到 根据确定可调衰减器电路的衰减系数的加权系数的内容来接地。

    Switched-capacitor filter
    3.
    发明授权
    Switched-capacitor filter 失效
    开关电容滤波器

    公开(公告)号：US4366456A

    公开(公告)日：1982-12-28

    申请号：US156389

    申请日：1980-06-04

    申请人： Norio Ueno ,  Seiji Kato ,  Atsushi Iwata

    发明人： Norio Ueno ,  Seiji Kato ,  Atsushi Iwata

    IPC分类号： G11C27/02 ,  H03H19/00 ,  H03K5/153

    CPC分类号： G11C27/024 ,  H03H19/004

    摘要： A switched capacitor filter having at its input, a signal converter for creating so-called 100% sample and hold signals. The signal converter comprises a plurality of switched capacitors. The switched capacitors, connected in parallel with each other, receive the same successive input signals and supply the so-called 100% sample and hold input signals to the switched-capacitor filter. The switched capacitors, on one hand, charge each of said input signals sequentially and, on the other hand, alternately discharge the respective stored input signals one by one.

    摘要翻译： 开关电容滤波器在其输入端具有用于产生所谓的100％采样和保持信号的信号转换器。 信号转换器包括多个开关电容器。 开关电容器彼此并联连接，接收相同的连续输入信号，并将所谓的100％采样和保持输入信号提供给开关电容滤波器。 一方面，开关电容器顺序地对所述输入信号中的每一个进行充电，另一方面，逐个地交替地放电各个存储的输入信号。

    Received data adjusting device
    4.
    发明授权
    Received data adjusting device 失效
    接收数据调整装置

    公开(公告)号：US5481564A

    公开(公告)日：1996-01-02

    申请号：US733983

    申请日：1991-07-22

    申请人： Mitsuo Kakuishi ,  Yutaka Awata ,  Norio Ueno ,  Seiji Miyoshi ,  Norio Murakami ,  Atsushi Manabe

    发明人： Mitsuo Kakuishi ,  Yutaka Awata ,  Norio Ueno ,  Seiji Miyoshi ,  Norio Murakami ,  Atsushi Manabe

    IPC分类号： H04L25/03 ,  H03H7/30

    CPC分类号： H04L25/03885 ,  H04L25/03057

    摘要： A digital adaptive equalizer equalizes received signals through digital filtering operations by changing filtering coefficients. It comprises a coefficient calculating unit for calculating the filtering coefficients by using one kind of parameters, such as distance, as an input to a function corresponding to the filtering coefficients and a filtering operation executing unit for executing digital filtering operations based on the filtering coefficients. A variable lag filter for adjusting the phase delay of received received signals is provided. A coefficient converting unit calculates a part or all of tap coefficients of the filter using at least one piece of timing control information.

    摘要翻译： 数字自适应均衡器通过改变滤波系数通过数字滤波操作来均衡接收信号。 它包括：系数计算单元，用于通过使用诸如距离的一种参数来计算滤波系数，作为与滤波系数相对应的函数的输入;以及滤波操作执行单元，用于基于滤波系数执行数字滤波操作。 提供了用于调整接收到的接收信号的相位延迟的可变滞后滤波器。 系数转换单元使用至少一条定时控制信息来计算滤波器的抽头系数的一部分或全部。

    Integrator for a switched capacitor-filter
    5.
    发明授权
    Integrator for a switched capacitor-filter 失效
    用于开关电容滤波器的积分器

    公开(公告)号：US4429281A

    公开(公告)日：1984-01-31

    申请号：US213399

    申请日：1980-12-05

    申请人： Akihiko Ito ,  Kazuhiro Kobayashi ,  Hisami Tanaka ,  Norio Ueno

    发明人： Akihiko Ito ,  Kazuhiro Kobayashi ,  Hisami Tanaka ,  Norio Ueno

    IPC分类号： H03K4/501 ,  G06G7/186 ,  H03H19/00 ,  H03K4/56 ,  H03K5/00 ,  H03F1/00

    CPC分类号： H03H19/004 ,  G06G7/1865

    摘要： An integrator for use in a switched capacitor-filter, in which switching elements are connected to an input and to an output of an operational amplifier included in the integrator for clamping the input and output to a ground potential during suspension of the integral operation, in order to prevent potentials at the input and output of the operational amplifier from varying and hence ensure rapid stabilization of the integral operation of the integrator.

    摘要翻译： 一种用于开关电容滤波器的积分器，其中开关元件连接到积分器中包括的输入端和运算放大器的输出端，用于在积分操作暂停期间将输入和输出钳位到地电位， 以防止运算放大器的输入和输出的电位变化，从而确保积分器的积分运算的快速稳定。

    Interface circuit adaptive to high speed and low voltage operation
    7.
    发明授权
    Interface circuit adaptive to high speed and low voltage operation 失效
    接口电路适应于高速和低电压工作

    公开(公告)号：US5512853A

    公开(公告)日：1996-04-30

    申请号：US320068

    申请日：1994-10-07

    申请人： Norio Ueno ,  Toru Matsuyama

    发明人： Norio Ueno ,  Toru Matsuyama

    IPC分类号： G06F15/78 ,  H03K19/0175 ,  H03K19/0185 ,  H03L5/00 ,  H01L25/00 ,  H03B1/00 ,  H03K17/16

    CPC分类号： H03K19/018514

    摘要： An interface circuit for interfacing between an integrated circuit (IC) on a transmitting side and an IC on a receiving side over a line on a printed circuit board comprises an output circuit implemented in the IC on the transmitting side and composed of a current source for supplying a given current and a switching circuit for cutting off the given current according to a binary signal and delivering the given current as a current signal to the line, and an input circuit implemented in the IC on the receiving side and composed of a transimpedance circuit whose input impedance is equal to the one of the line and which converts the current signal into a voltage signal, and a comparator for identifying the voltage signal relative to a given threshold voltage and reproducing the binary signal. This circuitry makes it possible to provide an interface circuit that can be implemented in a CMOS IC during CMOS processing and operated at a low voltage. A threshold voltage for use in identifying a signal on the receiving side is stabilized, thus realizing an interface circuit unsusceptible to influence of a change in CMOS processing or the like.

    摘要翻译： 用于在发送侧的集成电路（IC）和印刷电路板上的线路上的接收侧的IC之间进行接口的接口电路包括在发送侧的IC中实现的输出电路，并且由电流源 提供给定的电流和切换电路，用于根据二进制信号切断给定的电流，并将给定的电流作为电流信号传送到线路，以及在接收侧的IC中实现并由跨阻电路 其输入阻抗等于线路中的一个，并将电流信号转换为电压信号;以及比较器，用于识别相对于给定阈值电压的电压信号并再现二进制信号。 该电路使得可以提供在CMOS处理期间可以在CMOS IC中实现并在低电压下操作的接口电路。 用于识别接收侧的信号的阈值电压是稳定的，因此实现了不能影响CMOS处理等的改变的接口电路。