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    • 3. 发明授权
    • Burst signal detection circuit
    • 突发信号检测电路
    • US06907202B1
    • 2005-06-14
    • US09478604
    • 2000-01-06
    • Satoshi IdeShinichi Sakuramoto
    • Satoshi IdeShinichi Sakuramoto
    • H04B10/40H03G3/30H03K5/08H04B10/07H04B10/2507H04B10/50H04B10/60H04L25/03H04L25/06H04B10/00
    • H04B10/695H03G3/3084H03K5/082H04B10/6933
    • A burst signal detection circuit for detecting the arrival of a burst-like signal, which can accurately detect the burst signal against the DC level variations even in the case where the arriving burst signal is a weak signal, is disclosed. A DC variation removing circuit detects the bottom level of an input signal and removes the DC level variation of the input signal based on the bottom level. An amplitude identifying circuit detects the presence or absence of a burst signal based on the output signal of the DC variation removing circuit. The amplitude identifying circuit includes an amplitude detection circuit for detecting the maximum amplitude of the output signal of the DC variation removing circuit, a threshold level control circuit for controlling the threshold level and a comparator for comparing the output level of the amplitude detection circuit with the threshold level and outputting a detection signal indicating the presence or absence of a burst signal.
    • 公开了一种突发信号检测电路,用于检测突发状信号的到达,即使在到达的突发信号是弱信号的情况下也可以针对DC电平变化来精确地检测突发信号。 DC变化消除电路检测输入信号的底部电平,并且基于底部电平去除输入信号的DC电平变化。 振幅识别电路根据直流变化消除电路的输出信号来检测是否存在突发信号。 幅度识别电路包括用于检测DC变化消除电路的输出信号的最大幅度的振幅检测电路,用于控制阈值电平的阈值电平控制电路和用于将振幅检测电路的输出电平与 并输出指示是否存在突发信号的检测信号。
    • 4. 发明授权
    • Method, system, and apparatus for optical communication
    • 用于光通信的方法,系统和装置
    • US08634721B2
    • 2014-01-21
    • US12929135
    • 2011-01-03
    • Shinichi SakuramotoToru Matsuyama
    • Shinichi SakuramotoToru Matsuyama
    • H04B10/00
    • H04B10/673H04B10/564H04B10/695
    • An optical communication method includes outputting an optical data signal in which a signal amplitude of a non-data area that is an area other than a data area is made higher than a signal amplitude of the data area, to a predetermined receiver, receiving an optical input including the optical data signal with the predetermined receiver, detecting each of the signal amplitude of the non-data area and the signal amplitude of the data area of the optical input, creating a threshold for encoding the data area based on the signal amplitude of the data area, determining whether the optical data signal is received, based on the signal amplitude of the non-data area, and outputting a data signal in which the data area is encoded by using the threshold of the optical data signal, when it is determined that the optical data signal is received.
    • 一种光通信方法包括:输出光数据信号,其中将作为数据区以外的区域的非数据区的信号幅度设定得高于数据区的信号幅度;光接收机,接收光信号 输入包括光学数据信号与预定接收器,检测非数据区域的信号幅度和光输入的数据区域的信号幅度的每一个,创建基于信号幅度的数据区域的编码阈值 所述数据区域,基于所述非数据区域的信号幅度来确定是否接收到所述光数据信号,并且当其为所述数据区域时,通过使用所述光数据信号的阈值来输出所述数据区域被编码的数据信号 确定接收到光学数据信号。
    • 6. 发明申请
    • OPTICAL TRANSMITTER
    • 光学发射器
    • US20090214198A1
    • 2009-08-27
    • US12372079
    • 2009-02-17
    • Kensuke TAKAHASHIShinichi Sakuramoto
    • Kensuke TAKAHASHIShinichi Sakuramoto
    • G02F1/00
    • H01S5/0683H01S5/0427H01S5/06825H04B10/504H04B10/564
    • A optical transmitter includes a light device provided a driving current and for emitting light on the bases of the driving current; a light measure for measuring an output light level of the light device; a controller for controlling the driving current to the light device and for changing the measured output light power level into a set output light power level of the light device; a current measure for measuring a level of the driving current to the light device; an abnormality detector for detecting an aged deterioration of the light device on the bases of the current level of the driving current by the current measure and the measured output light power level by the light measure; and an adjuster for reducing the set output light power level in the controller when the abnormality detector detects the aged deterioration of the light device.
    • 光发射机包括提供驱动电流并用于在驱动电流的基础上发光的光器件; 用于测量光装置的输出光电平的光测量; 用于控制到所述灯装置的驱动电流并将所测量的输出光功率电平改变成所述灯装置的设定输出光功率电平的控制器; 用于测量到光装置的驱动电流的电平的当前测量; 一个异常检测器,用于根据当前测量的驱动电流的当前电平和通过光测量测量的输出光功率电平来检测光器件的老化变质; 以及调节器,用于当异常检测器检测到灯装置的老化变差时,降低控制器中的设定输出光功率电平。
    • 8. 发明申请
    • Method, system, and apparatus for optical communication
    • 用于光通信的方法,系统和装置
    • US20110170874A1
    • 2011-07-14
    • US12929135
    • 2011-01-03
    • Shinichi SakuramotoToru Matsuyama
    • Shinichi SakuramotoToru Matsuyama
    • H04B10/00H04B10/06H04B10/04
    • H04B10/673H04B10/564H04B10/695
    • An optical communication method includes outputting an optical data signal in which a signal amplitude of a non-data area that is an area other than a data area is made higher than a signal amplitude of the data area, to a predetermined receiver, receiving an optical input including the optical data signal with the predetermined receiver, detecting each of the signal amplitude of the non-data area and the signal amplitude of the data area of the optical input, creating a threshold for encoding the data area based on the signal amplitude of the data area, determining whether the optical data signal is received, based on the signal amplitude of the non-data area, and outputting a data signal in which the data area is encoded by using the threshold of the optical data signal, when it is determined that the optical data signal is received.
    • 一种光通信方法包括:输出光数据信号,其中将作为数据区以外的区域的非数据区的信号幅度设定得高于数据区的信号幅度;光接收机,接收光信号 输入包括光学数据信号与预定接收器,检测非数据区域的信号幅度和光输入的数据区域的信号幅度的每一个,创建基于信号幅度的数据区域的编码阈值 所述数据区域,基于所述非数据区域的信号幅度来确定是否接收到所述光数据信号,并且当其为所述数据区域时,通过使用所述光数据信号的阈值来输出所述数据区域被编码的数据信号 确定接收到光学数据信号。