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12 条记录 (耗时 0.012 秒)

    Light receiving amplifying device
    2.
    发明公开
    Light receiving amplifying device 有权
    元素（LichtempfangendesverstärkendesElement）

    公开(公告)号：EP0905925A2

    公开(公告)日：1999-03-31

    申请号：EP98306535.0

    申请日：1998-08-17

    申请人： Sharp Kabushiki Kaisha

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

    IPC分类号： H04B10/158

    CPC分类号： H04B10/114

    摘要： A light receiving amplifying device of the present invention includes (1) a light receiving device for outputting a light signal current which varies with a quantity of received light, (2) a load resistor connected with the light receiving device in series, for generating a detected voltage which varies with the light signal current, (3) a low frequency current bypass circuit for preventing the detected voltage from being saturated when the detected voltage has a frequency in a low frequency band, the low frequency current bypass circuit being connected with the load resistor in parallel and having an input impedance varying with a frequency of the detected voltage, (4) a transimpedance amplifying circuit (inverting amplifying circuit) for transforming an impedance of the detected voltage, and (5) a capacitor for coupling the low frequency current bypass circuit and the transimpedance amplifying circuit (inverting amplifying circuit). This makes it possible, with a relatively simple circuit and arrangement in an infrared communication receiver, to lower noises of the light receiving amplifying device while maintaining an operational range with respect to a DC photoelectric current.

    摘要翻译： 本发明的光接收放大装置包括：（1）用于输出随接收光量变化的光信号电流的光接收装置，（2）与光接收装置串联连接的负载电阻器，用于产生 检测电压随光信号电流而变化，（3）低频电流旁路电路，用于在检测电压具有低频带的频率时防止检测电压饱和，低频电流旁路电路与 负载电阻并联并具有随检测电压频率变化的输入阻抗，（4）用于变换检测电压的阻抗的跨阻放大电路（反相放大电路），以及（5）用于耦合低频的电容器 电流旁路电路和跨阻放大电路（反相放大电路）。 这使得通过红外通信接收机中相对简单的电路和布置可以降低光接收放大装置的噪声，同时保持相对于DC光电流的操作范围。

    Infrared communication device
    3.
    发明公开
    Infrared communication device 有权
    红外通讯设备

    公开(公告)号：EP1615359A2

    公开(公告)日：2006-01-11

    申请号：EP05076622.9

    申请日：1998-08-14

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Okuda, Takanori ,  Yokogawa, Naruichi

    IPC分类号： H04B10/158 ,  H03G3/30 ,  H03K5/08 ,  H03K5/1532

    CPC分类号： H03K5/1532 ,  H03G3/3084 ,  H03K5/084

    摘要： In a peak-hold circuit, a hold capacitor captures the peak value of an input signal and a reset section carries out a resetting operation on the holding value of the hold capacitor when, upon switching inputs, it receives a reset signal. The reset section, upon receipt of the reset signal, improves the response speed of a peak-hold section by a predetermined time period. The reset section is provided with a constant current circuit and a switching means for increasing a charging current and a discharging current of the peak-hold section respectively.

    摘要翻译： 在峰值保持电路中，保持电容器捕获输入信号的峰值，并且当切换输入时，保持电容器接收复位信号时，复位部分对保持电容器的保持值执行复位操作。 重置部分在接收到重置信号时将峰值保持部分的响应速度提高预定时间段。 复位部分设有恒流电路和用于分别增加峰值保持部分的充电电流和放电电流的开关装置。

    Infrared communication device
    6.
    发明公开
    Infrared communication device 有权
    红外线通信装置

    公开(公告)号：EP1615359A3

    公开(公告)日：2006-06-07

    申请号：EP05076622.9

    申请日：1998-08-14

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Okuda, Takanori ,  Yokogawa, Naruichi

    IPC分类号： H04B10/158 ,  H03G3/30 ,  H03K5/08 ,  H03K5/1532

    CPC分类号： H03K5/1532 ,  H03G3/3084 ,  H03K5/084

    摘要： An infrared communication device, which is a bidirectional infrared communication device having light receiving and emitting elements (D12,D11) that are integral with each other, comprising: a time counter (47) which, based on the fact that no level variation takes place in a transmitted signal (44) during a predetermined period, detects completion of the transmitted signal, and allows a receiving device (D12,A1,A2,46) to restore its sensitivity.

    Data receiver using waveform shaping
    8.
    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。