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1. 发明申请

US20140016929A1 METHOD FOR ESTIMATING AMOUNT OF WAVELENGTH DISPERSION, WAVELENGTH DISPERSION COMPENSATION CIRCUIT, AND RECEIVING DEVICE 有权
标题翻译：估计波长分散量，波长分散补偿电路和接收装置的方法
公开(公告)号：US20140016929A1
公开(公告)日：2014-01-16
申请号：US13981298
申请日：2012-01-24
申请人： Etsushi Yamazaki , Takayuki Kobayashi , Masahito Tomizawa , Riichi Kudo , Koichi Ishihara , Tadao Nakagawa , Mitsuteru Ishikawa
发明人： Etsushi Yamazaki , Takayuki Kobayashi , Masahito Tomizawa , Riichi Kudo , Koichi Ishihara , Tadao Nakagawa , Mitsuteru Ishikawa
IPC分类号： H04B10/079
CPC分类号： H04B10/07951 , H04B10/2513
摘要： A wavelength dispersion amount estimation method, a wavelength dispersion compensation circuit, and a receiving device which rapidly estimate and set a wavelength dispersion amount to compensate with high accuracy at the receiving device which compensates waveform distortion at an optical fiber transmission path. A wavelength dispersion compensation circuit includes an analog-digital converter which converts an optical analog waveform received from the optical fiber transmission path to a digital signal, a digital signal processor which compensates waveform distortion of the digital signal output from the analog-digital converter due to wavelength dispersion at the optical fiber transmission path with a dispersion compensation amount estimated with the wavelength dispersion amount estimation method, and a symbol clock extractor which extracts a symbol arrival timing clock of received data contained in the digital signal output from the analog-digital converter and outputs strength of the symbol arrival timing clock as the clock detection value.
摘要翻译：波长色散量估计方法，波长色散补偿电路和接收装置，其快速估计和设置在补偿光纤传输路径上的波形失真的接收装置处以高精度补偿的波长色散量。波长色散补偿电路包括将从光纤传输路径接收的光模拟波形转换为数字信号的模拟数字转换器，用于补偿由于模拟数字转换器输出的数字信号的波形失真，数字信号处理器由于在具有由波长色散量估计方法估计的色散补偿量的光纤传输路径处的波长色散，以及符号时钟提取器，其提取包含在从模数转换器输出的数字信号中的接收数据的符号到达定时时钟，以及输出符号到达定时时钟的强度作为时钟检测值。

2. 发明授权

US09178614B2 Method for estimating amount of wavelength dispersion, wavelength dispersion compensation circuit, and receiving device 有权
标题翻译：用于估计波长色散量，波长色散补偿电路和接收装置的方法
公开(公告)号：US09178614B2
公开(公告)日：2015-11-03
申请号：US13981298
申请日：2012-01-24
申请人： Etsushi Yamazaki , Takayuki Kobayashi , Masahito Tomizawa , Riichi Kudo , Koichi Ishihara , Tadao Nakagawa , Mitsuteru Ishikawa
发明人： Etsushi Yamazaki , Takayuki Kobayashi , Masahito Tomizawa , Riichi Kudo , Koichi Ishihara , Tadao Nakagawa , Mitsuteru Ishikawa
IPC分类号： H04B10/08 , H04B10/079 , H04B10/2513
CPC分类号： H04B10/07951 , H04B10/2513
摘要： A wavelength dispersion amount estimation method, a wavelength dispersion compensation circuit, and a receiving device which rapidly estimate and set a wavelength dispersion amount to compensate with high accuracy at the receiving device which compensates waveform distortion at an optical fiber transmission path. A wavelength dispersion compensation circuit includes an analog-digital converter which converts an optical analog waveform received from the optical fiber transmission path to a digital signal, a digital signal processor which compensates waveform distortion of the digital signal output from the analog-digital converter due to wavelength dispersion at the optical fiber transmission path with a dispersion compensation amount estimated with the wavelength dispersion amount estimation method, and a symbol clock extractor which extracts a symbol arrival timing clock of received data contained in the digital signal output from the analog-digital converter and outputs strength of the symbol arrival timing clock as the clock detection value.
摘要翻译：波长色散量估计方法，波长色散补偿电路和接收装置，其快速估计和设置在补偿光纤传输路径上的波形失真的接收装置处以高精度补偿的波长色散量。波长色散补偿电路包括将从光纤传输路径接收的光模拟波形转换为数字信号的模拟数字转换器，用于补偿由于模拟数字转换器输出的数字信号的波形失真，数字信号处理器由于在具有由波长色散量估计方法估计的色散补偿量的光纤传输路径处的波长色散，以及符号时钟提取器，其提取包含在从模数转换器输出的数字信号中的接收数据的符号到达定时时钟，以及输出符号到达定时时钟的强度作为时钟检测值。

3. 发明申请

US20130343749A1 WAVELENGTH DISPERSION AMOUNT ESTIMATION METHOD, WAVELENGTH DISPERSION COMPENSATION CIRCUIT, AND RECEPTION DEVICE 有权
标题翻译：波长分散量估计方法，波长分散补偿电路和接收装置
公开(公告)号：US20130343749A1
公开(公告)日：2013-12-26
申请号：US13982507
申请日：2012-01-02
申请人： Etsushi Yamazaki , Takayuki Kobayashi , Masahito Tomizawa , Riichi Kudo , Koichi Ishihara , Tadao Nakagawa , Mitsuteru Ishikawa
发明人： Etsushi Yamazaki , Takayuki Kobayashi , Masahito Tomizawa , Riichi Kudo , Koichi Ishihara , Tadao Nakagawa , Mitsuteru Ishikawa
IPC分类号： H04B10/61
CPC分类号： H04B10/616 , G01M11/338 , H04B10/07951
摘要： A wavelength dispersion amount estimation method, a wavelength dispersion compensation circuit, and a receiving device which rapidly estimate and set a wavelength dispersion amount to compensate with high accuracy at the receiving device which compensates waveform distortion at an optical fiber transmission path. The wavelength dispersion compensation circuit includes an analog-digital converter which converts an optical analog waveform received from the optical fiber transmission path to a digital signal, a digital signal processor which compensates waveform distortion of the digital signal output from the analog-digital converter due to wavelength dispersion at the optical fiber transmission path with a dispersion compensation amount estimated with the wavelength dispersion amount estimation method, and a symbol clock extractor which extracts a symbol arrival timing clock of received data contained in the digital signal output from the analog-digital converter and outputs strength of the symbol arrival timing clock as the clock detection value.
摘要翻译：波长色散量估计方法，波长色散补偿电路和接收装置，其快速估计和设置在补偿光纤传输路径上的波形失真的接收装置处以高精度补偿的波长色散量。波长色散补偿电路包括将从光纤传输路径接收的光模拟波形转换为数字信号的模数转换器，数字信号处理器，其补偿由于模拟数字转换器输出的数字信号的波形失真在具有由波长色散量估计方法估计的色散补偿量的光纤传输路径处的波长色散，以及符号时钟提取器，其提取包含在从模数转换器输出的数字信号中的接收数据的符号到达定时时钟，以及输出符号到达定时时钟的强度作为时钟检测值。

4. 发明授权

US08971703B2 Wavelength dispersion amount estimation method, wavelength dispersion compensation circuit, and reception device 有权
标题翻译：波长色散量估计方法，波长色散补偿电路和接收装置
公开(公告)号：US08971703B2
公开(公告)日：2015-03-03
申请号：US13982507
申请日：2012-02-01
申请人： Etsushi Yamazaki , Takayuki Kobayashi , Masahito Tomizawa , Riichi Kudo , Koichi Ishihara , Tadao Nakagawa , Mitsuteru Ishikawa
发明人： Etsushi Yamazaki , Takayuki Kobayashi , Masahito Tomizawa , Riichi Kudo , Koichi Ishihara , Tadao Nakagawa , Mitsuteru Ishikawa
IPC分类号： H04B10/00 , H04B10/12 , H04B10/08 , H04B17/00 , H04B10/61 , G01M11/00 , H04B10/079
CPC分类号： H04B10/616 , G01M11/338 , H04B10/07951
摘要： A wavelength dispersion amount estimation method, a wavelength dispersion compensation circuit, and a receiving device which rapidly estimate and set a wavelength dispersion amount to compensate with high accuracy at the receiving device which compensates waveform distortion at an optical fiber transmission path. The wavelength dispersion compensation circuit includes an analog-digital converter which converts an optical analog waveform received from the optical fiber transmission path to a digital signal, a digital signal processor which compensates waveform distortion of the digital signal output from the analog-digital converter due to wavelength dispersion at the optical fiber transmission path with a dispersion compensation amount estimated with the wavelength dispersion amount estimation method, and a symbol clock extractor which extracts a symbol arrival timing clock of received data contained in the digital signal output from the analog-digital converter and outputs strength of the symbol arrival timing clock as the clock detection value.
摘要翻译：波长色散量估计方法，波长色散补偿电路和接收装置，其快速估计和设置在补偿光纤传输路径上的波形失真的接收装置处以高精度补偿的波长色散量。波长色散补偿电路包括将从光纤传输路径接收的光模拟波形转换为数字信号的模数转换器，数字信号处理器，其补偿由于模拟数字转换器输出的数字信号的波形失真在具有由波长色散量估计方法估计的色散补偿量的光纤传输路径处的波长色散，以及符号时钟提取器，其提取包含在从模数转换器输出的数字信号中的接收数据的符号到达定时时钟，以及输出符号到达定时时钟的强度作为时钟检测值。

5. 发明申请

US20130004168A1 CLIENT SIGNAL ACCOMMODATING MULTIPLEXING APPARATUS AND METHOD 有权
标题翻译：客户信号存储多路复用器和方法
公开(公告)号：US20130004168A1
公开(公告)日：2013-01-03
申请号：US13634033
申请日：2011-03-11
申请人： Takuya Ohara , Takashi Ono , Shigeki Aisawa , Masahito Tomizawa , Hiroyuki Honma , Satoru Saitoh , Masahiro Shioda
发明人： Takuya Ohara , Takashi Ono , Shigeki Aisawa , Masahito Tomizawa , Hiroyuki Honma , Satoru Saitoh , Masahiro Shioda
IPC分类号： H04J14/00
CPC分类号： H04J3/1658 , H04J3/0638
摘要： In an apparatus for accommodating and multiplexing asynchronous client signals in which an idle signal is defined, the transmission side transmits client signals after synchronizing the client signals by inserting or removing, with reference to a specific client signal, an idle signal to/from the same type of another client signal, and in the receiving side, a PLL part is shared by recovering a clock from a client signal and distributing the clock for another client signal.
摘要翻译：在用于容纳和复用其中定义空闲信号的异步客户端信号的装置中，发送侧在通过相对于特定客户端信号插入或移除与其相同的空闲信号之后，在同步客户端信号之后发送客户端信号类型的另一客户端信号，并且在接收侧，通过从客户端信号恢复时钟并且将时钟分配给另一个客户端信号来共享PLL部分。

6. 发明申请

US20090162061A1 OPTICAL TRANSMISSION SYSTEM AND METHOD 有权
标题翻译：光传输系统和方法
公开(公告)号：US20090162061A1
公开(公告)日：2009-06-25
申请号：US12096551
申请日：2006-12-21
申请人： Yoshiaki Kisaka , Shigeki Aisawa , Yutaka Miyamoto , Masahito Tomizawa , Yasuyuki Endoh , Kazuhito Takei
发明人： Yoshiaki Kisaka , Shigeki Aisawa , Yutaka Miyamoto , Masahito Tomizawa , Yasuyuki Endoh , Kazuhito Takei
IPC分类号： H04J14/00 , H04J3/00 , H04J14/02
CPC分类号： H04J3/1652 , H04J3/07 , H04J2203/0085
摘要： An optical transmission system for performing frequency synchronization even with a client signal with low frequency accuracy, and for transmitting thereof by accommodating/multiplexing without causing a bit slip. A new overhead is added to the entire client signal, and the signal including the new overhead being stuffed is transmitted in conjunction with a plurality of stuffing bits as an optical signal wherein a data storing bit for a negative stuffing, a stuffing information notification bit, and a stuff bits inserting bit for a positive stuffing in the payload are defined in plurality as stuffing bits for adjusting clock frequencies of the client signal in this new overhead.
摘要翻译：一种光传输系统，用于即使使用低频精度的客户端信号进行频率同步，也可以通过容纳/多路复用而不产生位滑动进行发送。在整个客户端信号中增加新的开销，并且包括填充的新开销的信号与多个填充位一起作为光信号发送，其中，用于负填充的数据存储位，填充信息通知位，并且用于在有效载荷中的正填充的填充比特插入位被定义为多个作为填充位，用于在该新开销中调整客户端信号的时钟频率。

7. 发明授权

US07536108B2 High precision chromatic dispersion measuring method and automatic dispersion compensating optical link system that uses this method 有权
标题翻译：高精度色散测量方法和使用该方法的自动色散补偿光链路系统
公开(公告)号：US07536108B2
公开(公告)日：2009-05-19
申请号：US10185486
申请日：2002-06-26
申请人： Akira Hirano , Yutaka Miyamoto , Masahito Tomizawa , Shoichiro Kuwahara , Hiroshi Takahashi , Yasuyuki Inoue
发明人： Akira Hirano , Yutaka Miyamoto , Masahito Tomizawa , Shoichiro Kuwahara , Hiroshi Takahashi , Yasuyuki Inoue
IPC分类号： H04B10/12
CPC分类号： H04B10/25133 , H04B10/25137
摘要： The present invention relates to an automatic dispersion compensating optical link system. Carrier suppressed RZ encoded optical signals generated using carrier suppressing means and binary NRZ code or partial response code, or carrier suppressed clock signals generated using carrier suppressing means and clock signals are transmitted on an optical transmission line. Two bands of the carrier suppressed RZ encoded optical signals or carrier suppressed clock signals transmitted on the optical transmission line are each divided into bands and are received. Phase information of the respective basebands is extracted from the binary NRZ code components or partial response code components or clock signals in each band and the relative phase difference thereof is detected. The chromatic dispersion value of the optical transmission line is then calculated from the relative phase difference.
摘要翻译：本发明涉及自动色散补偿光链路系统。载波抑制使用载波抑制装置产生的RZ编码光信号和二进制NRZ码或部分响应码，或者使用载波抑制装置和时钟信号产生的载波抑制时钟信号在光传输线路上传输。载波抑制RZ编码的光信号的两个频带或在光传输线路上传输的载波抑制时钟信号各自被分成频带并被接收。从每个频带中的二进制NRZ码分量或部分响应码分量或时钟信号中提取各个基带的相位信息，并检测其相对相位差。然后从相对相位差计算光传输线的色散值。

8. 发明授权

US07424230B2 Digital transmission system 有权
标题翻译：数字传输系统
公开(公告)号：US07424230B2
公开(公告)日：2008-09-09
申请号：US10308588
申请日：2002-12-03
申请人： Masahito Tomizawa , Akira Hirano , Yoshiaki Kisaka , Yutaka Miyamoto
发明人： Masahito Tomizawa , Akira Hirano , Yoshiaki Kisaka , Yutaka Miyamoto
IPC分类号： H04B10/06 , H04L25/03 , H03M13/00
CPC分类号： H04L25/062
摘要： This digital transmission system is provided with a transmitting apparatus that transmits digital data signals and a receiving apparatus that receives the digital data signals transmitted over a transmission path, compares the signals with a predetermined threshold value, and performs decision reproduction. The receiving apparatus is formed by: decision circuits that receive the input of reception signals, discriminate between the respective reception signals using a plurality of threshold values, and output decision results; and a selection circuit that, based on the decision results output from the decision circuit, selects one decision result from one threshold value from among the decision results from each of the plurality of threshold values, and outputs the selected decision result. As a result, the receiving apparatus is able to individually select which decision result to use from which threshold value.
摘要翻译：该数字传输系统设置有发送数字数据信号的发送装置和接收通过传输路径发送的数字数据信号的接收装置，将该信号与规定的阈值进行比较，进行判定再现。接收装置由以下部分构成：接收接收信号的输入的判定电路，使用多个阈值对各个接收信号进行识别，并输出判定结果; 以及选择电路，其基于从所述判定电路输出的判定结果，从所述多个阈值中的每一个的判定结果中从一个阈值中选择一个判定结果，并输出所选择的判定结果。结果，接收装置能够从哪个阈值单独地选择使用哪个判定结果。

9. 发明授权

US07095758B2 Multiplexing and transmission apparatus 有权
标题翻译：复用和传输设备
公开(公告)号：US07095758B2
公开(公告)日：2006-08-22
申请号：US09882324
申请日：2001-06-15
申请人： Masahito Tomizawa , Takashi Ono , Yoshiaki Kisaka
发明人： Masahito Tomizawa , Takashi Ono , Yoshiaki Kisaka
IPC分类号： H04J3/04
CPC分类号： H04J3/047 , H04J3/1611 , H04J2203/0089
摘要： A multiplexing and transmission apparatus including a transmitter and a receiver is provided. The transmitter includes a control pulses generating circuit generating control pulses having different phases; channel-frame generating circuits each outputting low-speed frame signal in synchronization with the control pulse; and a multiplexing circuit multiplexing the low-speed frame signals into the high-speed serial signal. The receiver includes a demultiplexer demultiplexing high-speed serial signal into low-speed frame signals; channel-frame synchronization circuits each generating a frame pulse corresponding to the low-speed frame signal; a switching circuit switching each of the low-speed frame signals to an appropriate port of the channel; and a switch controller circuit controlling the switching circuit.
摘要翻译：提供了包括发射机和接收机的复用和传输设备。发射机包括产生具有不同相位的控制脉冲的控制脉冲发生电路; 各通道帧发生电路，与控制脉冲同步地输出低速帧信号; 以及将低速帧信号复用成高速串行信号的复用电路。接收机包括解复用器将高速串行信号解复用为低速帧信号; 每个帧同步电路产生与低速帧信号对应的帧脉冲; 切换电路将每个低速帧信号切换到信道的适当端口; 以及控制开关电路的开关控制电路。

10. 发明授权

US08571037B2 Optical digital transmission system 有权
标题翻译：光数字传输系统
公开(公告)号：US08571037B2
公开(公告)日：2013-10-29
申请号：US13126372
申请日：2009-11-13
申请人： Shigeki Aisawa , Masahito Tomizawa , Yutaka Miyamoto , Yoshiaki Kisaka , Yasuyuki Endo , Katsuyoshi Miura , Kazuhito Takei
发明人： Shigeki Aisawa , Masahito Tomizawa , Yutaka Miyamoto , Yoshiaki Kisaka , Yasuyuki Endo , Katsuyoshi Miura , Kazuhito Takei
IPC分类号： H04L12/28
CPC分类号： H04J3/1652 , H04J3/076 , H04J2203/0089
摘要： An optical digital transmission system of the present invention newly defines one second negative stuff byte in an overhead area for accommodation of the client signals with multiplexing into the OTU frame, newly defines one third positive stuff byte in a corresponding tributary slot in a payload area for accommodation of client signals with multiplexing, newly defines stuff control bits that is used for decision of the use of the second negative stuff byte and the third positive stuff byte in three different places in the overhead area for client signal accommodation with multiplexing, performs control by using the newly defined stuff control bits when accommodation of the client signal with the third positive stuff byte or the second negative stuff byte is required, and performs stuff control without using the newly defined stuff control bits when accommodation of the client signal by the third positive stuff byte and the second negative stuff byte is not required.
摘要翻译：本发明的光数字传输系统新定义了一个开销区域中的一个第二负填充字节，用于将客户端信号复用到OTU帧中，新定义了有效负载区域中的相应支路时隙中的三分之一正填充字节客户端信号采用多路复用方式，新定义了用于决定使用第二负填充字节和第三正填充字节的填充控制位，用于多路复用的客户端信号调用的开销区域中的三个不同位置，执行控制当需要用第三正填充字节或第二负填充字节调节客户端信号时，使用新定义的填充控制位，并且在将客户端信号调节为第三正值时，不使用新定义的填充控制位执行填充控制填充字节和第二个负面填充字节不是必需的。

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