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25 条记录 (耗时 0.03 秒)

    Clock signal detection circuit
    13.
    发明授权
    Clock signal detection circuit 失效
    时钟信号检测电路

    公开(公告)号：US6065129A

    公开(公告)日：2000-05-16

    申请号：US89508

    申请日：1998-06-03

    申请人： Hisaya Sakamoto ,  Akihiko Sugata ,  Tetsuya Kiyonaga ,  Akimitsu Miyazaki

    发明人： Hisaya Sakamoto ,  Akihiko Sugata ,  Tetsuya Kiyonaga ,  Akimitsu Miyazaki

    IPC分类号： H04B10/40 ,  H03K5/19 ,  H04B10/00 ,  H04B10/50 ,  H04B10/60 ,  H04L7/027 ,  H04L25/02 ,  H04L25/03 ,  G06F1/04

    CPC分类号： H03K5/19

    摘要： A clock signal detection circuit includes a diode to which a clock signal is applied as an input. If a voltage VD IN on the anode side of the diode is greater than a voltage VD OUT on the cathode side, the clock signal is fed into a transmission line and arrives at a reflecting load upon elapse of a prescribed delay time. When the voltage VD IN on the anode side of the diode becomes smaller than the voltage VD OUT on the cathode side, the clock signal is reflected by the reflecting load and returns to the cathode of the diode through the transmission line. This introduction and reflection of the clock signal is repeated at the clock signal period so that the amplitude on the output side of the diode is enlarged, thereby making it possible to obtain, from an averaging circuit, a clock detection voltage substantially equal to the amplitude value of the clock signal.

    摘要翻译： 时钟信号检测电路包括施加时钟信号作为输入的二极管。 如果二极管的阳极侧的电压VD IN大于阴极侧的电压VD OUT，则时钟信号被馈送到传输线，并且在经过规定的延迟时间后到达反射负载。 当二极管的阳极侧的电压VD IN小于阴极侧的电压VD OUT时，时钟信号被反射负载反射，并通过传输线返回到二极管的阴极。 时钟信号的引入和反射在时钟信号周期被重复，使得二极管的输出侧的振幅被放大，从而可以从平均电路获得基本上等于振幅的时钟检测电压 时钟信号的值。

    Synchronization control unit which maintains synchronization between serial-to-parallel converters operating in parallel, or between parallel-to-serial converters operating in parallel
    14.
    发明授权
    Synchronization control unit which maintains synchronization between serial-to-parallel converters operating in parallel, or between parallel-to-serial converters operating in parallel 失效
    同步控制单元，其保持并行操作的串并转换器之间的同步，或并行操作的并行到串行转换器之间的同步

    公开(公告)号：US5808571A

    公开(公告)日：1998-09-15

    申请号：US789186

    申请日：1997-01-24

    申请人： Naoki Kuwata ,  Tetsuji Sato ,  Noriaki Mizuguchi ,  Tetsuya Kiyonaga

    发明人： Naoki Kuwata ,  Tetsuji Sato ,  Noriaki Mizuguchi ,  Tetsuya Kiyonaga

    IPC分类号： H03M9/00 ,  H04J3/04 ,  H04J3/06

    CPC分类号： H04J3/047 ,  H03M9/00 ,  H04J3/0685

    摘要： A synchronization control unit for synchronizing serial-to-parallel (S/P) converters operating in parallel, or parallel-to-serial (P/S) converters operating in parallel. More specifically, first and serial-to-parallel (S/P) converters produce respectively corresponding first and second clock signals and operate in parallel. The first and second clock signals are in synchronization, and a synchronization failure occurs when the first and second clock signals fall out of synchronization. When a synchronization failure occurs, the synchronization control unit resets one of the first and second clock signals so that synchronization between the first and second clock signals is restored within a definite time period. Moreover, the synchronization control unit can perform the same operation with parallel-to-serial (P/S) converters, instead of with S/P converters.

    摘要翻译： 一种同步控制单元，用于并行操作的并行或并行串行（P / S）转换器的并行串行/并行（S / P）转换器。 更具体地，第一和串行到并行（S / P）转换器产生分别对应的第一和第二时钟信号并且并行操作。 第一和第二时钟信号同步，并且当第一和第二时钟信号不同步时，发生同步故障。 当同步失败发生时，同步控制单元复位第一和第二时钟信号中的一个，使得第一和第二时钟信号之间的同步在一定的时间周期内恢复。 此外，同步控制单元可以与并行串行（P / S）转换器而不是使用S / P转换器执行相同的操作。

    Optical transmitter and method for controlling optical transmitter
    17.
    发明申请
    Optical transmitter and method for controlling optical transmitter 审中-公开
    光发射机和光发射机控制方法

    公开(公告)号：US20070160374A1

    公开(公告)日：2007-07-12

    申请号：US11403610

    申请日：2006-04-13

    申请人： Kensuke Matsui ,  Tetsuya Kiyonaga ,  Takahiro Fujimoto ,  Hiroshi Yamada

    发明人： Kensuke Matsui ,  Tetsuya Kiyonaga ,  Takahiro Fujimoto ,  Hiroshi Yamada

    IPC分类号： H04B10/04

    CPC分类号： H04B10/504

    摘要： An optical transmitter includes a laser diode drive circuit for driving a laser diode in accordance with a laser diode current that superimposes a pilot signal on a “0” logic level and a “1” logic level of a transmission signal, the pilot signal having a low-frequency compared with the transmission signal, so as to become an opposite phase each other, a monitor circuit for monitoring an optical output of the laser diode, a filter circuit for extracting a low-frequency component of the pilot signal from an output of the monitor circuit, a phase compare circuit for comparing a phase of the low-frequency component of the pilot signal extracted by the filter circuit with a phase of the pilot signal, and a deterioration judgment circuit for judging whether or not the laser diode deteriorates in accordance with a comparison result of the phase compare circuit.

    摘要翻译： 光发射机包括：激光二极管驱动电路，用于根据激光二极管电流驱动激光二极管，激光二极管电流将导频信号叠加在“0”逻辑电平和“1”逻辑电平的传输信号上，该导频信号具有 低频与传输信号相比，以便成为相反的相位，用于监视激光二极管的光输出的监视电路，用于从导频信号的输出中提取导频信号的低频分量的滤波电路 监视电路，用于将由滤波电路提取的导频信号的低频分量的相位与导频信号的相位进行比较的相位比较电路，以及用于判断激光二极管是否劣化的劣化判断电路 根据相位比较电路的比较结果。

    Method and apparatus for controlling extinction ratio of light-emitting device
    18.
    发明申请
    Method and apparatus for controlling extinction ratio of light-emitting device 审中-公开
    控制发光装置消光比的方法和装置

    公开(公告)号：US20070076771A1

    公开(公告)日：2007-04-05

    申请号：US11356225

    申请日：2006-02-17

    申请人： Takahiro Fujimoto ,  Kensuke Matsui ,  Tetsuya Kiyonaga ,  Hiroshi Yamada

    发明人： Takahiro Fujimoto ,  Kensuke Matsui ,  Tetsuya Kiyonaga ,  Hiroshi Yamada

    IPC分类号： H01S3/00

    CPC分类号： H01S5/06804 ,  H01S5/0617 ,  H01S5/06812 ,  H01S5/06832

    摘要： An apparatus for controlling an extinction ratio of a light-emitting device, includes: a temperature detecting unit that detects a temperature of the device; a power detecting unit that detects an optical output power of the device; a modulation-current detecting unit that detects a modulation current input into the device; a POW computing unit that computes a power control value for the device based on the temperature; and an ER computing unit that computes an extinction ratio control value for the device based on the power control value, the optical output power, and the modulation current.

    摘要翻译： 一种用于控制发光装置的消光比的装置，包括：温度检测单元，其检测装置的温度; 功率检测单元，其检测所述装置的光输出功率; 调制电流检测单元，其检测输入到所述装置的调制电流; POW计算单元，其基于温度计算设备的功率控制值; 以及基于功率控制值，光输出功率和调制电流来计算器件的消光比控制值的ER计算单元。

    Optical receiving device
    19.
    发明授权
    Optical receiving device 失效
    光接收装置

    公开(公告)号：US07031621B2

    公开(公告)日：2006-04-18

    申请号：US10998032

    申请日：2004-11-29

    申请人： Yasunori Nagakubo ,  Tetsuya Kiyonaga

    发明人： Yasunori Nagakubo ,  Tetsuya Kiyonaga

    IPC分类号： H04B10/06 ,  H01J40/14

    CPC分类号： H04B10/695 ,  H04B10/6911

    摘要： An optical receiving device which is improved in the accuracy of optical input interruption detection as well as in the alarm response and thus is capable of high-quality detection of interruption of the optical input. A light receiving element receives an optical signal and converts it into an electrical signal. A bias control section stabilizes a bias voltage applied to the light receiving element against variations in temperature and power supply. An optical input interruption protection section protects the light receiving element using a protective voltage so that the light receiving element may not be broken due to an excessive rise of the bias voltage when the optical input is interrupted. An alarm issuing section monitors the photocurrent of the light receiving element and issues an alarm on detecting an interruption of the optical input when the bias voltage and the protective voltage become equal to each other.

    摘要翻译： 一种提高光输入中断检测精度和报警响应的光接收装置，能够高质量地检测光输入的中断。 光接收元件接收光信号并将其转换为电信号。 偏置控制部分抵抗温度和电源的变化稳定施加到光接收元件的偏置电压。 光输入中断保护部分使用保护电压保护光接收元件，使得当光输入被中断时由于偏置电压的过度上升而不会损坏光接收元件。 警报发出部分监视光接收元件的光电流，并且当偏置电压和保护电压彼此相等时，检测光输入的中断时发出警报。

    Optical receiving device
    20.
    发明申请
    Optical receiving device 失效
    光接收装置

    公开(公告)号：US20050100350A1

    公开(公告)日：2005-05-12

    申请号：US10998032

    申请日：2004-11-29

    申请人： Yasunori Nagakubo ,  Tetsuya Kiyonaga

    发明人： Yasunori Nagakubo ,  Tetsuya Kiyonaga

    IPC分类号： H04B10/60 ,  H04B10/07 ,  H04B10/077 ,  H04B10/40 ,  H04B10/50 ,  H04B10/67 ,  H04B10/69 ,  H04B10/06

    CPC分类号： H04B10/695 ,  H04B10/6911

    摘要： An optical receiving device which is improved in the accuracy of optical input interruption detection as well as in the alarm response and thus is capable of high-quality detection of interruption of the optical input. A light receiving element receives an optical signal and converts same into an electrical signal. A bias control section stabilizes a bias voltage applied to the light receiving element against variations in temperature and power supply. An optical input interruption protection section protects the light receiving element by means of a protective voltage so that the light receiving element may not be broken due to an excessive rise of the bias voltage when the optical input is interrupted. An alarm issuing section monitors the photocurrent of the light receiving element and issues an alarm on detecting an interruption of the optical input when the bias voltage and the protective voltage become equal to each other.

    摘要翻译： 一种提高光输入中断检测精度和报警响应的光接收装置，能够高质量地检测光输入的中断。 光接收元件接收光信号并将其转换为电信号。 偏置控制部分抵抗温度和电源的变化稳定施加到光接收元件的偏置电压。 光输入中断保护部分通过保护电压来保护光接收元件，使得当光输入被中断时由于偏置电压的过度上升而不会损坏光接收元件。 警报发出部分监视光接收元件的光电流，并且当偏置电压和保护电压彼此相等时，检测光输入的中断时发出警报。