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公开(公告)号：US20080092009A1
公开(公告)日：2008-04-17
申请号：US11662085
申请日：2004-09-09
CPC分类号： H03M13/2909 , H03M13/1515 , H03M13/152 , H03M13/27
摘要： An error correction coding apparatus includes a frame generating unit for buffering inputted information sequence data in frame buffers which correspond to units to be coded, respectively, a first interleaving unit for rearranging the information sequence data within two or more of the frame buffers, a first coding unit for coding the information sequence data rearranged by the first interleaving unit for each of the frame buffers, and for buffering an error correcting code generated thereby in the frame buffer, a first deinterleaving unit for rearranging code word sequence data in the frame buffer which is coded by the first coding unit according to a procedure which is reverse to that which the first interleaving unit uses, and a multiplexing unit for outputting, as transmission information, the code word sequence data rearranged by the first deinterleaving unit.
摘要翻译： 纠错编码装置包括：帧产生单元，用于分别缓冲对应于要编码的单元的帧缓冲器中的输入信息序列数据;第一交织单元，用于在两个或更多个帧缓冲器内重新排列信息序列数据;第一 编码单元，用于编码由第一交织单元为每个帧缓冲器重排的信息序列数据，并且用于缓冲在帧缓冲器中由此产生的纠错码;第一解交织单元，用于重新排列帧缓冲器中的码字序列数据， 根据与第一交织单元使用的过程相反的过程由第一编码单元编码;以及复用单元，用于输出由第一解交织单元重新排列的码字序列数据作为发送信息。
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2.发明授权Apparatuses and method for error correction coding and error correction decoding 有权用于纠错编码和纠错解码的装置和方法公开(公告)号：US07895498B2
公开(公告)日：2011-02-22
申请号：US11662085
申请日：2004-09-09
IPC分类号： H03M13/00
CPC分类号： H03M13/2909 , H03M13/1515 , H03M13/152 , H03M13/27
摘要： An error correction coding apparatus includes a first coding unit for coding a sequence data to be coded which includes information source data for each frame to generate an error correcting code word sequence including a parity sequences, and a first rearranging unit for rearranging elements of the error correcting code word sequences of a plurality of frames generated by the first coding unit. The first rearranging unit rearranges elements of the parity sequences included in the error correcting code word sequences. The first rearranging unit also rearranges elements of the error correcting code word sequences other than the parity sequences, within the error correcting code word sequences other than the parity sequences.
摘要翻译： 纠错编码装置包括：第一编码单元，用于编码包括每帧的信息源数据的待编码序列数据，以产生包括奇偶序列的纠错码字序列;以及第一重排单元，用于重新排列错误的元素 校正由第一编码单元生成的多个帧的码字序列。 第一重排单元重新排列包括在纠错码字序列中的奇偶校验序列的元素。 除奇偶校验序列之外的第一重排单元还重新排列除奇偶校验序列之外的纠错码字序列的元素。
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公开(公告)号：US20070229118A1
公开(公告)日：2007-10-04
申请号：US11504694
申请日：2006-08-16
IPC分类号： H03D13/00
CPC分类号： H03D13/003
摘要： A phase comparator includes: first and second detecting units for detecting an amplitude value of a clock signal at falling timing or rising timing of a data signal; an edge comparing unit for identifying as to whether the first detecting unit detects an amplitude value under a rising state or a falling state to output a first identification result, and for identifying as to whether the second detecting unit detects an amplitude value under a rising state or a falling state to output a second identification result; first and second polarity inverting units for inverting a polarity of output of the first and second detecting units; and a signal selecting unit for selecting one of output values of the first and second polarity inverting units in response to a polarity of the data signal to output the selected output value.
摘要翻译： 相位比较器包括：第一和第二检测单元，用于检测下降定时时钟信号的振幅值或数据信号的上升定时; 边缘比较单元，用于识别第一检测单元是否在升高状态或下降状态下检测振幅值以输出第一识别结果，并且用于识别第二检测单元是否在升高状态下检测振幅值 或下降状态输出第二识别结果; 第一和第二极性反转单元，用于反转第一和第二检测单元的输出的极性; 以及信号选择单元，用于响应于数据信号的极性来选择第一和第二极性反转单元的输出值之一，以输出所选择的输出值。
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4.发明授权Optical transmitter, and method of controlling bias voltage to the optical transmitter 失效光发射机，以及控制光发射机偏置电压的方法公开(公告)号：US06836622B2
公开(公告)日：2004-12-28
申请号：US09840183
申请日：2001-04-24
IPC分类号： H04B1004
CPC分类号： G02F1/0123 , G02F1/225 , G02F2001/212 , G02F2203/21
摘要： The optical transmitter comprises a light source which inputs continuous optical signal and a driving circuit which inputs driving signal to an optical modulator of Mach-Zehnder type. A photo coupler separates a part of the output of the optical modulator. A photo diode converts this part into electric signal. A band-pass filter and a pre-amplifier extract a frequency component of the driving signal contained in the electric signal. A mixer conducts synchronous detection between the driving signal and the extracted frequency component. Finally, a bias voltage control circuit controls a bias voltage based on a result of the phase comparison.
摘要翻译： 光发射机包括输入连续光信号的光源和向Mach-Zehnder型光调制器输入驱动信号的驱动电路。 光耦合器分离光调制器的一部分输出。 光电二极管将该部分转换为电信号。 带通滤波器和前置放大器提取包含在电信号中的驱动信号的频率分量。 混频器在驱动信号和提取的频率分量之间进行同步检测。 最后，偏置电压控制电路基于相位比较的结果来控制偏置电压。
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公开(公告)号：US07239673B2
公开(公告)日：2007-07-03
申请号：US10416550
申请日：2002-09-12
申请人： Kazushige Sawada , Kazuo Kubo , Takashi Mizuochi , Hideo Yoshida , Hachiro Fujita , Katsuhiro Shimizu , Junichi Abe
发明人： Kazushige Sawada , Kazuo Kubo , Takashi Mizuochi , Hideo Yoshida , Hachiro Fujita , Katsuhiro Shimizu , Junichi Abe
CPC分类号： H03M13/6325 , G11B20/1833 , H04B10/695 , H04L1/004 , H04L25/063 , H04L25/067
摘要： An optical receiver includes a soft-decision deciding unit (7) for deciding an electric received signal according to a plurality of decision levels to output a multivalued decision signal, a demultiplexing unit (5) for serial-to-parallel converting the multivalued decision signal to output a multivalued parallel signal, a soft-decision error correction decoding unit (8) for correcting the multivalued parallel signal based on reliability information to output an error-corrected parallel received signal and decision results indicating the decision of the electric received signal according to the plurality of decision levels, a probability density distribution estimation unit (9) for estimating probability density distributions based on distributions of the decision results, and a decision level control unit (10) for controlling the plurality of decision levels based on the probability density distributions, thereby improving the transmission quality.
摘要翻译： 一种光接收机包括：软判决决定单元，用于根据多个判决电平决定电接收信号以输出多值判定信号;解复用单元，用于串并转换多值判定信号; 输出多值并行信号;软判决纠错解码单元，用于根据可靠性信息校正多值并行信号，以输出纠错后的并行接收信号;以及判定结果，其指示电接收信号根据 所述多个判定级别，基于所述判定结果的分布来估计概率密度分布的概率密度分布估计单元（9），以及用于基于所述概率密度分布来控制所述多个判定级别的判定级别控制单元（10） ，从而提高传输质量。
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公开(公告)号：US07801450B2
公开(公告)日：2010-09-21
申请号：US11663743
申请日：2004-11-08
申请人： Jun′ichi Abe , Katsuhiro Shimizu
发明人： Jun′ichi Abe , Katsuhiro Shimizu
IPC分类号： H04B10/04
CPC分类号： H04B10/50575 , G02F1/0123 , H04B10/07957 , H04B10/505 , H04B10/5057 , H04B10/50572 , H04B10/50593 , H04B10/50595 , H04B10/572
摘要： An optical transmitter includes an optical modulator, an optical coupler, a crosspoint monitoring unit, a reference-value setting unit, and a bias circuit. The optical coupler splits an optical signal output from the optical modulator into a plurality of optical signals. The crosspoint monitoring unit receives part of the optical signals, and monitors a crosspoint of the optical signal output from the optical modulator. The reference-value setting unit sets a bias reference value to be assigned to the optical modulator based on an output of the crosspoint monitoring unit so that the crosspoint is constant. The bias circuit applies a bias to the optical modulator based on the bias reference value.
摘要翻译： 光发射机包括光调制器，光耦合器，交叉点监测单元，基准值设定单元和偏置电路。 光耦合器将从光调制器输出的光信号分离成多个光信号。 交叉点监视单元接收部分光信号，并监视从光调制器输出的光信号的交叉点。 基准值设定单元基于交叉点监视单元的输出设定分配给光调制器的偏置基准值，使得交叉点恒定。 偏置电路基于偏置参考值向光学调制器施加偏置。
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公开(公告)号：US20080107428A1
公开(公告)日：2008-05-08
申请号：US11663743
申请日：2004-11-08
申请人： Jun'ichi Abe , Katsuhiro Shimizu
发明人： Jun'ichi Abe , Katsuhiro Shimizu
IPC分类号： H04B10/04
CPC分类号： H04B10/50575 , G02F1/0123 , H04B10/07957 , H04B10/505 , H04B10/5057 , H04B10/50572 , H04B10/50593 , H04B10/50595 , H04B10/572
摘要： An optical transmitter includes an optical modulator, an optical coupler, a crosspoint monitoring unit, a reference-value setting unit, and a bias circuit. The optical coupler splits an optical signal output from the optical modulator into a plurality of optical signals. The crosspoint monitoring unit receives part of the optical signals, and monitors a crosspoint of the optical signal output from the optical modulator. The reference-value setting unit sets a bias reference value to be assigned to the optical modulator based on an output of the crosspoint monitoring unit so that the crosspoint is constant. The bias circuit applies a bias to the optical modulator based on the bias reference value.
摘要翻译： 光发射机包括光调制器，光耦合器，交叉点监测单元，基准值设定单元和偏置电路。 光耦合器将从光调制器输出的光信号分离成多个光信号。 交叉点监视单元接收部分光信号，并监视从光调制器输出的光信号的交叉点。 基准值设定单元基于交叉点监视单元的输出设定分配给光调制器的偏置基准值，使得交叉点恒定。 偏置电路基于偏置参考值向光学调制器施加偏置。
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8.发明授权公开(公告)号：US06657778B1
公开(公告)日：2003-12-02
申请号：US09806456
申请日：2001-04-18
IPC分类号： H04B1012
CPC分类号： H04B10/2941 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals are demultiplexed or separated into individual bands and amplified by first to n-th fixed-gain optical amplifiers (#1, . . . , #n) each having a high fixed gain in the respective bands to be subsequently multiplexed by an optical multiplexer and then sent out onto a transmission line. A monitoring light branching device extracts a part of light power of a specific monitoring wavelength, which is then fed to an adjustable attenuator control circuit which controls the attenuation factor of the adjustable optical attenuator so that the light power of the specific wavelength remains constant. The gain of the optical amplifying repeater apparatus at the specific wavelength can thus be determined. By employing as the optical amplifying medium a substantially homogeneous medium, the gain for the other wavelengths can be fixed. The optical amplifying repeater apparatus whose gain is essentially independent of the change in the number of the wavelengths can thus be realized.
摘要翻译： 第一至第n个频带放大的光信号通过可调节的光衰减器经过适当的衰减，其符合连接到光放大中继器设备的输入的光纤中的衰减，其中光信号被解复用或分离成单个频带， 由第一至第n固定增益光放大器（＃1，...，#n）放大，每个固定增益光放大器（＃1，...，#n）在各个频带中具有高固定增益，随后由光复用器复用，然后发送到传输线。 监视光分支装置提取特定监视波长的一部分光功率，然后将其馈送到可调节衰减器控制电路，该可调节衰减器控制电路控制可调节光衰减器的衰减因子，使得特定波长的光功率保持恒定。 因此可以确定特定波长的光放大中继器装置的增益。 通过采用基本均匀的介质作为光放大介质，可以固定其它波长的增益。 因此可以实现其增益基本上与波长数量的变化无关的光放大中继器装置。
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公开(公告)号：US20130039643A1
公开(公告)日：2013-02-14
申请号：US13642723
申请日：2010-04-23
IPC分类号： H04J14/02
CPC分类号： H04J14/0297 , H04B10/032 , H04J14/0295
摘要： An optical communication system including optical transmission systems each includes a transmission processing unit and a receiving processing unit, wherein the transmission processing unit includes an optical transmission unit that converts electric signals into optical signals, an auxiliary optical transmission unit that converts a part of the electric signals into an optical signal having a wavelength other than wavelengths of the optical signals generated by the optical transmission unit, and outputs the generated optical signal to a different transmission processing unit, and a wavelength multiplexing unit, and the receiving processing unit includes a wavelength demultiplexing unit, an optical receiving unit that converts the optical signals having the wavelengths of the optical signals generated by the optical transmission unit into electric signals, respectively, and an auxiliary optical receiving unit that converts the optical signal having the wavelength of the optical signal generated by the auxiliary optical transmission unit.
摘要翻译： 包括光传输系统的光通信系统各自包括传输处理单元和接收处理单元，其中传输处理单元包括将电信号转换为光信号的光传输单元，将一部分电 信号转换成具有由光传输单元生成的光信号的波长以外的波长的光信号，并将生成的光信号输出到不同的发送处理单元和波长复用单元，并且接收处理单元包括波长解复用 单元，光接收单元，其将具有由光传输单元生成的光信号的波长的光信号分别转换为电信号;以及辅助光接收单元，其将具有光信号波长的光信号 由辅助光传输单元产生。
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公开(公告)号：US08059971B2
公开(公告)日：2011-11-15
申请号：US11792306
申请日：2004-12-28
CPC分类号： H04B10/66
摘要： An optical reception device realizes stabilization of reception sensitivity inexpensively and highly precisely. The optical reception device includes: a Mach-Zehnder type 1-bit delay unit including a one-terminal input port and two-terminal output ports for decoding an optical difference phase shift keying (DPSK) signal and provided with one or more phase control functions to control the phase state of light; photoelectric conversion means for branching a portion of an optical output signal output from the one-side output port of the Mach-Zehnder type 1-bit delay unit, to convert the branched portion into an electric signal; and a phase control unit for controlling the phase state of the Mach-Zehnder type 1-bit delay device by using as an error signal the output signal of the photoelectric conversion means.
摘要翻译： 光接收装置实现了廉价高精度的接收灵敏度的稳定化。 光接收装置包括：马赫 - 策德尔型1位延迟单元，其包括单端输入端口和用于解码光差分相移键控（DPSK）信号并具有一个或多个相位控制功能的两端输出端口 控制光的相位状态; 光电转换装置，用于对从Mach-Zehnder型1位延迟单元的单面输出端口输出的光输出信号的一部分进行分支，将分支部分转换为电信号; 以及相位控制单元，用于通过使用光电转换装置的输出信号作为误差信号来控制马赫 - 曾德尔型1位延迟装置的相位状态。
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