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17 条记录 (耗时 0.009 秒)

    Amplifying circuit
    2.
    发明公开
    Amplifying circuit 审中-公开
    Verstärkerschaltung

    公开(公告)号：EP1056196A2

    公开(公告)日：2000-11-29

    申请号：EP00111187.1

    申请日：2000-05-24

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Uno, Hitoshi

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45475 ,  H03F3/45982 ,  H03K5/003

    摘要： There are described an amplifying circuit unit and an amplifying circuit which can momentarily compensate for a d.c. potential offset of a difference output signal stemming from a d.c. potential offset of a difference input signal and achieve a good characteristic. The amplifying circuit unit includes a differential amplifying circuit which receives and amplifies positive-phase and negative-phase signals; a first peak detection circuit for detecting a peak value of the positive-phase signal input to the differential amplifying circuit; a second peak detection circuit for detecting a peak value of the negative-phase signal input to the differential amplifying circuit; and an offset compensation circuit for compensating for a d.c. potential offset arising in a differential signal output from the differential amplifying circuit, on the basis of the peak values detected by the peak detection circuits.

    摘要翻译： 描述了可以暂时补偿直流电压的放大电路单元和放大电路。 来自直流电平的差分输出信号的电位偏移。 差分输入信号的电位偏移量达到良好的特性。 放大电路单元包括差分放大电路，其接收和放大正相和负相位信号; 第一峰值检测电路，用于检测输入到差分放大电路的正相信号的峰值; 第二峰值检测电路，用于检测输入到差分放大电路的负相位信号的峰值; 以及用于补偿直流电压的偏移补偿电路。 基于由峰值检测电路检测的峰值，从差分放大电路输出的差分信号中产生的电位偏移。

    High order multipath compensated operational amplifier with reduced input referred offset
    3.
    发明公开
    High order multipath compensated operational amplifier with reduced input referred offset 审中-公开
    Mehrwegoperationsverstärkerhoher Ordnung mit Nullpunktabweichungskorrektur

    公开(公告)号：EP1195891A2

    公开(公告)日：2002-04-10

    申请号：EP01308366.2

    申请日：2001-10-01

    申请人： CIRRUS LOGIC INC.

    发明人： Kejariwal, Murari ,  Prasad, Ammisetti ,  Thomsen, Axel

    IPC分类号： H03F1/30

    CPC分类号： H03F3/45982 ,  H03F1/30 ,  H03F3/343

    摘要： Disclosed in this application is the placement of an additional integrator between the first stage integrator output and the input to the attenuator/low pass filter. This approach reduces the input referred offset by a factor equal to the gain of the additional integrator, and the offset of the additional integrator itself will be divided by the gain of the first-stage integrator.

    摘要翻译： 在本申请中公开的是在第一级积分器输出和衰减器/低通滤波器的输入之间放置附加积分器。 该方法将输入参考偏移减少了等于附加积分器的增益的因子，并且附加积分器本身的偏移将被第一级积分器的增益除以。

    Amplifier for burst signal and optical receiving circuit
    4.
    发明公开
    Amplifier for burst signal and optical receiving circuit 失效
    突发信号的放大器和光学接收电路

    公开(公告)号：EP0792012A3

    公开(公告)日：1998-05-27

    申请号：EP97102874

    申请日：1997-02-21

    申请人： MATSUSHITA ELECTRIC IND CO LTD

    发明人： ASANO HIROAKI ,  YAMAMOTO HIROAKI ,  FUJITO KATSUYUKI

    IPC分类号： H03F3/08 ,  H03F3/45 ,  H04B10/69 ,  H03F1/00 ,  H04B10/158

    CPC分类号： H03F3/08 ,  H03F3/45475 ,  H03F3/45982 ,  H04B10/6933

    摘要： A differential amplifier (11) differentially amplifies an inputted burst signal. A first maximum value holding circuit (12) detects and holds the maximum value of an inverting output of the differential amplifier (11). A second maximum value holding circuit (13) detects and holds the maximum value of a non-inverting output of the differential amplifier (11). A differential amplifier (14) differentially amplifies outputs of the first and second maximum value holding circuits (12) and (13). An output of the differential amplifier (14) is fed to a differential amplifier (15) as a reference input. The differential amplifier (15) differentially amplifies the non-inverting output of the differential amplifier (11) with the reference input from the differential amplifier (14) used as a basis. The first and second maximum value holding circuits (12) and (13) have the same circuit design, and the sizes and the directions of variations respectively occurring inside thereof are the same. The differential amplifier (14) is so constructed that the amplification factor thereof is set to 0.5, and a variation occurring inside thereof is the same as a variation occurring inside of the differential amplifier (11). Respective output variations occurring in the maximum value holding circuits (12) and (13) due to a temperature variation and a power supply voltage variation are canceled by providing differential amplification in the differential amplifier (14). At this time, an output variation occurring in the differential amplifier (11) is also canceled. Therefore, an output variation occurring in the differential amplifier (14) is made equal in value to the output variation occurring in the differential amplifier (11), so that the same variation as a signal input is superimposed on the reference input fed to the differential amplifier (15). Consequently, a reference input accurately following the DC level of the signal input can be fed to the differential amplifier (15), whereby stable amplification can be always provided.

    Data receiver using waveform shaping
    5.
    发明公开
    Data receiver using waveform shaping 有权
    SignalformenderDatenempfänger

    公开(公告)号：EP0905894A2

    公开(公告)日：1999-03-31

    申请号：EP98306590.5

    申请日：1998-08-18

    申请人： Sharp Kabushiki Kaisha

    发明人： Okuda, Takanori ,  Yokogawa, Naruichi ,  Shimizu, Takayuki ,  Nakamura, Fumitaka

    IPC分类号： H03K5/01

    CPC分类号： H03F3/3066 ,  H03F3/08 ,  H03F3/087 ,  H03F3/3088 ,  H03F3/45112 ,  H03F3/45982 ,  H03F2203/45544 ,  H03F2203/45631 ,  H03K5/082

    摘要： A data communication receiving element having: a photo-receiving element for receiving a light signal sent from an external and converting the light signal to a current signal; an amplifier circuit for amplifying the current signal after converting the current signal to a voltage signal; a waveform shaping circuit for shaping an output voltage waveform from the amplifier circuit to a substantially square pulse; and an integrator for converting the substantially square pulse to a non-square pulse by extending a rising time necessary for shifting the substantially square pulse from a low potential level to a high potential level, and a falling time necessary for shifting the substantially scare pulse from the high potential level to the low potential level.

    摘要翻译： 一种数据通信接收元件，具有：光接收元件，用于接收从外部发送的光信号并将光信号转换为电流信号; 放大电路，用于在将电流信号转换成电压信号之后放大电流信号; 波形整形电路，用于将来自放大器电路的输出电压波形整形为基本上平方的脉冲; 以及积分器，用于通过将基本上平方的脉冲从低电位电平移位到高电位电平所需的上升时间，以及将基本上振荡的脉冲从 高潜力水平达到低电位水平。

    Signal processing method
    6.
    发明公开
    Signal processing method 失效
    Signalverarbeitungsverfahren

    公开(公告)号：EP0782253A3

    公开(公告)日：1998-12-23

    申请号：EP96119690

    申请日：1996-12-09

    申请人： MOTOROLA INC

    发明人： CHUN CHRISTOPHER K Y ,  SHOOK STEPHEN G ,  RYAN CARL R

    IPC分类号： H03F3/08 ,  H03F3/343 ,  H03F3/45 ,  H03G3/34

    CPC分类号： H03F3/08 ,  H03F3/3432 ,  H03F3/45982 ,  H03G3/345

    摘要： A signal processing circuit (10) generates a bias signal (27) that is used for biasing a comparator (26). An input signal (14) is compared to the bias signal (27) in order to reconstruct the input signal (14) on an output of the comparator. The bias signal (27) is generated by selecting the larger of a percent of the input signal (23) or an offset signal (24) that is larger than a minimum value of the input signal.

    摘要翻译： 信号处理电路（10）产生用于偏置比较器（26）的偏置信号（27）。 将输入信号（14）与偏置信号（27）进行比较，以便在比较器的输出端重建输入信号（14）。 通过选择输入信号（23）的百分比中的较大者或大于输入信号的最小值的偏移信号（24）来产生偏置信号（27）。

    Signal processing method
    7.
    发明公开
    Signal processing method 失效
    信号处理方法

    公开(公告)号：EP0782253A2

    公开(公告)日：1997-07-02

    申请号：EP96119690.4

    申请日：1996-12-09

    申请人： MOTOROLA, INC.

    发明人： Chun, Christopher K.Y. ,  Shook, Stephen G. ,  Ryan, Carl R.

    IPC分类号： H03G3/34

    CPC分类号： H03F3/08 ,  H03F3/3432 ,  H03F3/45982 ,  H03G3/345

    摘要： A signal processing circuit (10) generates a bias signal (27) that is used for biasing a comparator (26). An input signal (14) is compared to the bias signal (27) in order to reconstruct the input signal (14) on an output of the comparator. The bias signal (27) is generated by selecting the larger of a percent of the input signal (23) or an offset signal (24) that is larger than a minimum value of the input signal.