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1. 发明授权

US07711218B2 Optical reception apparatus and controlling method thereof 失效
标题翻译：光接收装置及其控制方法
公开(公告)号：US07711218B2
公开(公告)日：2010-05-04
申请号：US12149381
申请日：2008-04-30
申请人： Hisayuki Ojima , Katsumi Fukumitsu
发明人： Hisayuki Ojima , Katsumi Fukumitsu
IPC分类号： G02B6/28
CPC分类号： H04B10/677
摘要： The optical reception apparatus of the invention branches into two an RZ-DQPSK optical signal input from an optical transmission path via an optical amplifier, respectively sends this to delay interferometers and photoelectric converters on a pair of arms, separately detects a number of generated errors for the signals propagating through the arms in an error-number detection circuit, obtains a difference in the respective number of generated errors in an error-number detector, and controls phase shift in the delay interferometers so that the difference is within a preset tolerance. By so doing, it is possible to realize excellent reception performance by suppressing the occurrence of the burst error.
摘要翻译：本发明的光接收装置分支经由光放大器从光传输路径输入的两个RZ-DQPSK光信号分别发送到一对臂上的延迟干涉仪和光电转换器，分别检测多个产生的错误，在错误号检测电路中通过臂传播的信号获得误差检测器中产生的误差的数量的差异，并且控制延迟干涉仪中的相移，使得差值在预设容差内。通过这样做，可以通过抑制突发错误的发生来实现良好的接收性能。

2. 发明授权

US08655185B2 Optical node, optical network system, and method for measuring polarization mode dispersion 有权
标题翻译：光节点，光网络系统和偏振模色散测量方法
公开(公告)号：US08655185B2
公开(公告)日：2014-02-18
申请号：US13004532
申请日：2011-01-11
申请人： Takeshi Sakamoto , Katsumi Fukumitsu , Kosuke Komaki
发明人： Takeshi Sakamoto , Katsumi Fukumitsu , Kosuke Komaki
IPC分类号： H04B10/00
CPC分类号： H04B10/0775 , H04B2210/074 , H04B2210/078
摘要： An optical node disposed along a transmission line that uses optical fiber. The optical node includes a first signal generator and a monitor. The first signal generator generates a first measurement signal for measuring polarization mode dispersion values and transmits the first measurement signal along the transmission line. The monitor detects a second measurement signal from the transmission line and measures polarization mode dispersion values by performing signal processing with respect to the second measurement signal.
摘要翻译：沿着使用光纤的传输线设置的光学节点。光节点包括第一信号发生器和监视器。第一信号发生器产生用于测量偏振模色散值的第一测量信号，并沿传输线发送第一测量信号。监视器从传输线检测第二测量信号，并通过对第二测量信号执行信号处理来测量偏振模色散值。

3. 发明申请

US20090028580A1 Optical reception apparatus and controlling method thereof 失效
标题翻译：光接收装置及其控制方法
公开(公告)号：US20090028580A1
公开(公告)日：2009-01-29
申请号：US12149381
申请日：2008-04-30
申请人： Hisayuki Ojima , Katsumi Fukumitsu
发明人： Hisayuki Ojima , Katsumi Fukumitsu
IPC分类号： H04B10/06
CPC分类号： H04B10/677
摘要： The optical reception apparatus of the invention branches into two an RZ-DQPSK optical signal input from an optical transmission path via an optical amplifier, respectively sends this to delay interferometers and photoelectric converters on a pair of arms, separately detects a number of generated errors for the signals propagating through the arms in an error-number detection circuit, obtains a difference in the respective number of generated errors in an error-number detector, and controls phase shift in the delay interferometers so that the difference is within a preset tolerance. By so doing, it is possible to realize excellent reception performance by suppressing the occurrence of the burst error.
摘要翻译：本发明的光接收装置分支经由光放大器从光传输路径输入的两个RZ-DQPSK光信号分别发送到一对臂上的延迟干涉仪和光电转换器，分别检测多个产生的错误，在错误号检测电路中通过臂传播的信号获得误差检测器中产生的误差的数量的差异，并且控制延迟干涉仪中的相移，使得差值在预设容差内。通过这样做，可以通过抑制突发错误的发生来实现良好的接收性能。

4. 发明授权

US08649678B2 Frame processing apparatus, optical receiving apparatus, optical transceiving apparatus, optical transmission system, and frame processing controlling method 有权
标题翻译：帧处理装置，光接收装置，光收发装置，光传输系统和帧处理控制方法
公开(公告)号：US08649678B2
公开(公告)日：2014-02-11
申请号：US12488745
申请日：2009-06-22
申请人： Takeshi Hoshida , Katsumi Fukumitsu
发明人： Takeshi Hoshida , Katsumi Fukumitsu
IPC分类号： H04B10/08
CPC分类号： H04J14/0227 , H04J14/0246 , H04J14/0279 , H04J14/0283 , H04L1/0036 , H04L1/0053 , H04L1/203 , H04L43/0847
摘要： The technique for improving the efficiency in use of power resources while maintaining the received signal quality that satisfies the requirement during a system operation is disclosed. The frame processing apparatus disclosed in the present case includes: a frame processing unit which performs frame processing on an input signal in the designated error processing mode; and a controlling unit which receives the monitoring result relating to the signal quality of the input signal and performs switching control of the designation of the above error processing mode in the frame processing unit based on the received monitoring result.
摘要翻译：公开了一种提高电力资源使用效率的技术，同时保持在系统操作期间满足要求的接收信号质量。在本例中公开的帧处理装置包括：帧处理部，其以指定的误差处理模式对输入信号进行帧处理; 以及控制单元，其接收与输入信号的信号质量相关的监视结果，并且基于接收的监视结果执行帧处理单元中的上述错误处理模式的指定的切换控制。

5. 发明申请

US20070071447A1 Optical receiving apparatus and dispersion compensating method therein 审中-公开
标题翻译：光接收装置及其中的色散补偿方法
公开(公告)号：US20070071447A1
公开(公告)日：2007-03-29
申请号：US11313966
申请日：2005-12-22
申请人： Masakazu Ozaki , Katsumi Fukumitsu
发明人： Masakazu Ozaki , Katsumi Fukumitsu
IPC分类号： H04B10/12
CPC分类号： H04B10/25133 , H04J14/0227 , H04J14/0241 , H04J14/0279 , H04J14/0283 , H04J14/0294
摘要： An optical receiving apparatus has a route change detector for detecting occurrence of a route change of received signal light, a memory for beforehand storing optimum dispersion compensation quantity for the received signal light before and after the route change, a tunable dispersion compensator for compensating dispersion of the received signal light, and a controller for controlling a dispersion compensation quantity used by the tunable dispersion compensator according to the optimum dispersion compensation quantity for the received signal light after the route change, which is beforehand stored in the memory, when the route change detector detects occurrence of the route change. The dispersion compensation quantity can be optimized at high-speed for each of optical transmission routes of the received signal light.
摘要翻译：光接收装置具有用于检测接收信号光的路线变化的发生的路径变化检测器，用于预先存储在路由改变之前和之后的接收信号光的最佳色散补偿量的存储器，用于补偿色散的可调色散补偿器接收信号光，以及控制器，用于当路线改变检测器预先存储在存储器中时，根据用于在路由改变之后的接收信号光的最佳色散补偿量来控制由可调色散补偿器使用的色散补偿量检测路线变化的发生。对于接收信号光的每个光传输路径，色散补偿量可以高速优化。

6. 发明授权

US5703409A Error counting circuit 失效
标题翻译：错误计数电路
公开(公告)号：US5703409A
公开(公告)日：1997-12-30
申请号：US283783
申请日：1994-08-01
申请人： Katsumi Fukumitsu , Tadayuki Takada
发明人： Katsumi Fukumitsu , Tadayuki Takada
IPC分类号： H04B10/556 , H04B10/03 , H04B10/07 , H04L1/00 , H04L1/24 , G06F11/00
CPC分类号： H04L1/24
摘要： An error counting circuit is adapted to count a number of code errors of a main signal in an external apparatus which is coupled to an optical transmission path. The error counting circuit includes an error counter which counts error pulses received from the external apparatus and indicative of the number of code errors of the main signal in response to clock pulses having a predetermined period and outputting a counted value for each the predetermined period, and a mechanism for stopping a counting operation of the error counter when a power failure of the external apparatus occurs, so that an erroneous counting operation of the error counter is prevented.
摘要翻译：错误计数电路适于对连接到光传输路径的外部设备中的主信号的码错误数进行计数。误差计数电路包括：误差计数器，对来自外部设备的误差脉冲进行计数，并响应于具有预定周期的时钟脉冲指示主信号的码错误数，并输出每个预定周期的计数值;以及发生外部设备的电源故障时停止错误计数器的计数操作的机构，从而防止错误计数器的错误计数操作。

7. 发明授权

US08295715B2 Optical receiver and optical phase control method thereof 有权
标题翻译：光接收机及其光相位控制方法
公开(公告)号：US08295715B2
公开(公告)日：2012-10-23
申请号：US12318585
申请日：2008-12-31
申请人： Katsumi Fukumitsu
发明人： Katsumi Fukumitsu
IPC分类号： H04B10/06
CPC分类号： H04B10/677
摘要： An optical receiver includes: delay interferometers respectively provided in at least two branches that branch a reception signal; a phase shift amount control device that controls a phase shift amount of the delay interferometer in accordance with an optical phase control value; a balanced optical detecting section that respectively photoelectrically converts respective branch signals output from the delay interferometers; a data regenerating section that regenerates transmission data from the photoelectrically converted branch signals output from the balanced optical detecting section; a control section that outputs the optical phase control value based on a signal of the data regenerating section; and a memory that stores therein the optical phase control value output from the control section at the time of signal communication, as a history of control values, wherein the control section refers to the history of control values during a signal communication operation to determine the optical phase control value.
摘要翻译：光接收机包括：延迟干涉仪分别设置在分支接收信号的至少两个分支中; 相移量控制装置，其根据光学相位控制值控制所述延迟干涉仪的相移量; 平衡光学检测部分，其对从延迟干涉仪输出的各个分支信号进行光电转换; 数据再生部，从平衡光检测部输出的光电转换支路信号中再生发送数据; 控制部，其基于数据再生部的信号输出光相位控制值; 以及存储器，其中存储在信号通信时从控制部分输出的光相位控制值作为控制值的历史，其中控制部分参考在信号通信操作期间的控制值的历史以确定光学相位控制值。

8. 发明申请

US20110200339A1 OPTICAL RECEIVER 有权
标题翻译：光接收机
公开(公告)号：US20110200339A1
公开(公告)日：2011-08-18
申请号：US13017874
申请日：2011-01-31
申请人： Kosuke KOMAKI , Masahiro Shioda , Katsumi Fukumitsu , Osamu Takeuchi
发明人： Kosuke KOMAKI , Masahiro Shioda , Katsumi Fukumitsu , Osamu Takeuchi
IPC分类号： H04B10/06
CPC分类号： H04B10/6971 , H04B10/61 , H04B10/611 , H04B10/613 , H04B10/6151 , H04B10/6161 , H04B10/6165 , H04L7/0004 , H04L7/0335 , H04L27/223 , H04L27/227
摘要： An optical receiver includes: a waveform distortion compensator to perform an operation on digital signal representing an optical signal generated by an A/D converter to compensate for waveform distortion of the optical signal; a phase detector to generate phase information representing sampling phase of the A/D converter; a phase adjuster to generate digital signal representing an optical signal in which the sampling phase of the A/D converter is adjusted from an output signal of the waveform distortion compensator using the phase information; a demodulator to generate a demodulated signal from the output signal of the phase adjuster; a phase controller to control the sampling phase of the A/D converter; a peak detector to detect a peak value of the phase information while the sampling phase of the A/D converter is controlled by the phase controller; and a compensation controller to control the waveform distortion compensator using the peak value.
摘要翻译：光接收器包括：波形失真补偿器，用于对表示由A / D转换器产生的光信号的数字信号进行操作以补偿光信号的波形失真; 相位检测器，用于产生表示A / D转换器的采样相位的相位信息; 相位调节器，用于产生代表使用相位信息的波形失真补偿器的输出信号调整A / D转换器的采样相位的光信号的数字信号; 解调器，用于从所述相位调节器的输出信号产生解调信号; 控制A / D转换器采样相位的相位控制器; 峰值检测器，用于在由相位控制器控制A / D转换器的采样相位时检测相位信息的峰值; 以及使用峰值来控制波形失真补偿器的补偿控制器。

9. 发明申请

US20090257756A1 Optical receiver and optical phase control method thereof 有权
标题翻译：光接收机及其光相位控制方法
公开(公告)号：US20090257756A1
公开(公告)日：2009-10-15
申请号：US12318585
申请日：2008-12-31
申请人： Katsumi Fukumitsu
发明人： Katsumi Fukumitsu
IPC分类号： H04B10/06
CPC分类号： H04B10/677
摘要： An optical receiver includes: delay interferometers respectively provided in at least two branches that branch a reception signal; a phase shift amount control device that controls a phase shift amount of the delay interferometer in accordance with an optical phase control value; a balanced optical detecting section that respectively photoelectrically converts respective branch signals output from the delay interferometers; a data regenerating section that regenerates transmission data from the photoelectrically converted branch signals output from the balanced optical detecting section; a control section that outputs the optical phase control value based on a signal of the data regenerating section; and a memory that stores therein the optical phase control value output from the control section at the time of signal communication, as a history of control values, wherein the control section refers to the history of control values during a signal communication operation to determine the optical phase control value.
摘要翻译：光接收机包括：延迟干涉仪分别设置在分支接收信号的至少两个分支中; 相移量控制装置，其根据光学相位控制值控制所述延迟干涉仪的相移量; 平衡光学检测部分，其对从延迟干涉仪输出的各个分支信号进行光电转换; 数据再生部，从平衡光检测部输出的光电转换支路信号中再生发送数据; 控制部，其基于数据再生部的信号输出光相位控制值; 以及存储器，其中存储在信号通信时从控制部分输出的光相位控制值作为控制值的历史，其中控制部分参考在信号通信操作期间的控制值的历史以确定光学相位控制值。

10. 发明授权

US07319824B2 Optical signal receiver, and method for controlling identification point for binarization processing performed thereby 有权
标题翻译：光信号接收机，以及用于控制由此执行的二进制化处理的识别点的方法
公开(公告)号：US07319824B2
公开(公告)日：2008-01-15
申请号：US11152332
申请日：2005-06-15
申请人： Katsumi Fukumitsu
发明人： Katsumi Fukumitsu
IPC分类号： H04B10/06 , H04B10/08 , H04B17/00
CPC分类号： H04L1/0047 , H04B10/695 , H04L1/203 , H04L25/063
摘要： A method for controlling an identification point for binarization processing in an optical signal receiver which can diminish a code error rate by optimally tracking an identification point at all times in accordance with a received signal, thereby maintaining transmission quality high. The method comprises identification point electrical signal increment/decrement steps. When the number of error correction operations is determined to have reached a target value in a target value arrival determination step, an identification point electrical signal is left unchanged. In contrast, when the number of error correction operations is determined not to have reached the target value, the identification point electrical signal is incremented or decremented within a predetermined increment/decrement range such that the number of error correction operations approaches the target value.
摘要翻译：一种用于控制光信号接收机中的二值化处理的识别点的方法，其可以根据接收到的信号一直通过最佳地跟踪识别点来减少码错误率，从而保持传输质量高。该方法包括识别点电信号递增/递减步骤。当在目标值到达确定步骤中确定纠错操作的数量达到目标值时，识别点电信号保持不变。相反，当确定错误校正操作的数量不达到目标值时，识别点电信号在预定增量/减小范围内递增或递减，使得纠错操作的数量接近目标值。

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