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公开(公告)号：US20120087653A1
公开(公告)日：2012-04-12
申请号：US13378055
申请日：2010-03-08
CPC分类号： H04B10/516 , H04B10/5051
摘要： An optical transmission apparatus in which, even if a change is made in the bit rate of modulation signals that are inputted to a plurality of optical modulating units, the modulation signals do not suffer from phase shifting, thereby enabling achieving synchronous modulation in the plurality of optical modulating units and enabling achieving a high optical signal quality. The optical transmission apparatus includes: a plurality of optical modulating units that modulate light on the basis of modulation signals; and a delay amount control unit that, based on bit rate information indicating a bit rate of the modulation signals, controls delay amounts of the modulation signals to be inputted to the plurality of optical modulating units, such that the light is modulated in a synchronous manner in the plurality of optical modulating units.
摘要翻译： 其中，即使在输入到多个光调制单元的调制信号的比特率中发生变化，调制信号也不会遭受相移，从而能够实现多个调制信号的同步调制 光调制单元，实现高光信号质量。 光传输装置包括：多个光调制单元，其基于调制信号调制光; 以及延迟量控制单元，其基于表示调制信号的比特率的比特率信息，控制要输入到多个光调制单元的调制信号的延迟量，使得以同步方式调制光 在多个光学调制单元中。
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公开(公告)号：US20100287450A1
公开(公告)日：2010-11-11
申请号：US12775825
申请日：2010-05-07
申请人： Takashi Sugihara , Takashi Mizuochi , Kazuo Kubo
发明人： Takashi Sugihara , Takashi Mizuochi , Kazuo Kubo
CPC分类号： H04L25/067
摘要： An optical receiving apparatus includes: an A/D converting circuit; a received-signal demodulating circuit that demodulates a received digital signal from the A/D converting circuit into an m-bit received signal; a soft-decision-data generating circuit that generates n-bit (n≦m) soft-decision data based on the m-bit received signal; and an error correcting circuit that performs error correction based on the n-bit soft-decision data and outputs an error-corrected received signal. The soft-decision-data generating circuit generates soft-decision data of n bits (n=p+1) that corresponds to a determination result according to 2n−1 soft-decision thresholds, by using an MSB of the m-bit received signal as hard-decision data, and by using, as reliability information, a result of comparison between a plurality of bits (k bits, where k≦m) on an MSB side of the m-bit received signal and a fixed threshold, or p bits (p≦m−k) selected from (m−k) bits on an LSB side of the m-bit received signal.
摘要翻译： 一种光接收装置，包括：A / D转换电路; 接收信号解调电路，将接收到的数字信号从A / D转换电路解调为m位接收信号; 软判决数据产生电路，其基于所述m位接收信号产生n位（n＆nl; m）个软判决数据; 以及错误校正电路，其基于n位软判决数据进行纠错，并输出纠错接收信号。 软判决数据生成电路通过使用m比特接收信号的MSB，生成与根据2n-1个软判定阈值的判定结果对应的n位（n = p + 1）的软判决数据 作为硬判决数据，并且通过使用作为可靠性信息的m位接收信号的MSB侧的多个比特（k比特，其中k比特，其中k和nlE; m）与固定阈值的比较，或者p 从m位接收信号的LSB侧的（m-k）比特中选择的比特（p＆nlE; m-k）。
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公开(公告)号：US07505695B2
公开(公告)日：2009-03-17
申请号：US10508321
申请日：2003-04-23
IPC分类号： H04B10/06
CPC分类号： H04B10/6971 , H04B10/675 , H04B10/6972
摘要： The present invention includes an optical band-limiting filter which imposes a band-limitation on an input optical signal, an opto-electric converter which converts the optical signal output from the optical band-limiting filter into an electric signal, a lowpass filter which imposes the band-limitation on the electric signal output from the opto-electric converter, an amplifier which amplifies the output signal of the lowpass filter, and an electric equalizer which performs an equalization processing on a waveform of the electric signal output from the opto-electric converter are provided, and a full width at half maximum of the optical band-limiting filter is set to be equivalent to or smaller than a bit rate frequency of the optical signal.
摘要翻译： 本发明包括对输入光信号施加带限限制的光限幅滤波器，将从光限带滤波器输出的光信号转换为电信号的光电转换器，施加 从光电转换器输出的电信号的频带限制，放大低通滤波器的输出信号的放大器和对从光电输出的电信号的波形进行均衡处理的电均衡器 转换器，并且将光限幅滤波器的半值全宽设置为等于或小于光信号的比特率频率。
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公开(公告)号：US07501914B2
公开(公告)日：2009-03-10
申请号：US11587678
申请日：2004-04-28
CPC分类号： H03H7/38 , H03F1/30 , H03F3/189 , H04B2203/5483
摘要： A bias circuit that supplies bias voltage or bias current to one end of a transmission line includes an inductor that prohibits a high frequency component of a baseband signal transmitted on the transmission line and passes a frequency component near direct current of the baseband signal, and an impedance-decrease prevention element that prevents impedance from decreasing, when viewed from the transmission line, that is produced due to a resonance between a parasitic capacitance generated due to the inductor and an inductance of the inductor.
摘要翻译： 向传输线路的一端提供偏置电压或偏置电流的偏置电路包括：电阻器，其抑制在传输线路上传输的基带信号的高频分量，并使基带信号的直流电流附近的频率分量通过， 阻抗减小预防元件，其防止由于由于电感器产生的寄生电容和电感器的电感之间的谐振而从传输线看到的阻抗减小。
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公开(公告)号：US07379671B2
公开(公告)日：2008-05-27
申请号：US10609366
申请日：2003-07-01
CPC分类号： H04B10/5051 , H04B10/505 , H04B10/5165 , H04B10/548
摘要： An optical modulation processing section is provided which, in turn, includes a signal carrier-suppressed pulse modulating unit that performs signal carrier-suppressed pulse modulation on a light source signal to thereby create a CS-RZ signal, a phase modulating unit that performs phase modulation on a data signal based on the CS-RZ signal to thereby convert the data signal to a phase-modulated signal, and an optical filtering unit that filters out redundant frequency components included in the phase modulation signal.
摘要翻译： 提供了一种光调制处理部，其进而包括对光源信号执行信号载波抑制脉冲调制从而产生CS-RZ信号的信号载波抑制脉冲调制单元，相位调制单元执行相位 基于CS-RZ信号对数据信号进行调制，从而将数据信号转换为相位调制信号;以及滤波单元，滤除包括在相位调制信号中的冗余频率分量。
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公开(公告)号：US07050838B1
公开(公告)日：2006-05-23
申请号：US09351521
申请日：1999-07-12
CPC分类号： H04B1/1615 , H04W52/0274 , Y02D70/40
摘要： There is provided a portable information terminal having a built-in radio communications device which minimizes a drop in the voltage of a battery and diminishes the operation threshold voltage of the portable information terminal, thereby lengthening the operatable time of the terminal. In the portable information terminal, when a radio communications section is in a transmission state, a microprocessor of an interface and a microprocessor of an information processing section are brought into a hold state, thereby deactivating the interface and the information processing section. As a result, the operating current required during transmission can be minimized. When the radio communications section is not in a transmission state, the information processing section and the interface are activated. Even when the radio communications section is in a voice communication state and when information is not input to the information processing section for a given period of time, the information processing section and the interface are deactivated. A voltage drop due to internal resistance of the battery is diminished by distributing or reducing the electric current dissipated by operation, in accordance with operating conditions. Consequently, the portable information device can be operated even when the voltage of the battery drops, thus lengthening the operatable time.
摘要翻译： 提供了一种具有内置无线电通信装置的便携式信息终端，其使电池的电压下降最小化并且减小了便携式信息终端的操作阈值电压，从而延长了终端的可操作时间。 在便携式信息终端中，当无线通信部处于发送状态时，接口的微处理器和信息处理部的微处理器进入保持状态，从而停止接口和信息处理部。 结果，可以最小化传输期间所需的工作电流。 当无线电通信部分不处于传输状态时，信息处理部分和接口被激活。 即使当无线电通信部分处于语音通信状态，并且当信息未被输入到信息处理部分给定的时间段时，信息处理部分和接口被去激活。 根据操作条件，通过分配或减少通过操作消耗的电流来减少由于电池的内部电阻引起的电压降。 因此，便携式信息装置即使在电池电压下降的情况下也可以进行操作，从而延长了可操作时间。
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公开(公告)号：US06949364B2
公开(公告)日：2005-09-27
申请号：US10876841
申请日：2004-06-28
申请人： Takashi Sugihara , Renu Wadhwa , Sunil C. Kaul , Youji Mitsui
发明人： Takashi Sugihara , Renu Wadhwa , Sunil C. Kaul , Youji Mitsui
IPC分类号： C07K14/47 , C12N15/09 , C12N15/12 , C12P21/06 , C12P21/02 , C07H21/04 , C12N5/10 , C12N15/63
CPC分类号： C07K14/4702
摘要： A gene expressed specifically in the testis has been unexpectedly isolated in the course of studies of the expression of a gene encoding an unknown protein that triggers cell death. The isolated gene was a novel gene sequence that had no significant homologue in the database. This gene was also found to be involved in the regulation of differentiation in the testis.
摘要翻译： 在研究编码引发细胞死亡的未知蛋白质的基因的表达过程中，已经意外地分离了在睾丸中特异表达的基因。 分离的基因是一个新的基因序列，在数据库中没有显着的同源物。 该基因也被发现参与睾丸分化的调节。
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公开(公告)号：US20050033036A1
公开(公告)日：2005-02-10
申请号：US10876841
申请日：2004-06-28
申请人： Takashi Sugihara , Renu Wadhwa , Sunil Kaul , Youji Mitsui
发明人： Takashi Sugihara , Renu Wadhwa , Sunil Kaul , Youji Mitsui
CPC分类号： C07K14/4702
摘要： A gene expressed specifically in the testis has been unexpectedly isolated in the course of studies of the expression of a gene encoding an unknown protein that triggers cell death. The isolated gene was a novel gene sequence that had no significant homologue in the database. This gene was also found to be involved in the regulation of differentiation in the testis.
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公开(公告)号：US08638486B2
公开(公告)日：2014-01-28
申请号：US13314553
申请日：2011-12-08
CPC分类号： H04B10/5053 , G02F1/0123 , G02F1/225
摘要： An optical modulator includes first and second modulation waveguides, a demultiplexer, first and second phase adjustment waveguides that changes phases of a light of the first and second modulation waveguides, a multiplexer that combines light outputs from the first and second phase adjustment waveguides, a gain controller and a modulator bias controller in which voltages of the first and second modulation signals are controlled so that a result of adding light from the first modulation waveguide to light from the second modulation waveguide where light from the first modulation waveguide has a predetermined phase is equal to a result of adding light from the first modulation waveguide to light from the second modulation waveguide where light from the second modulation waveguide has a predetermined phase. A phase-adjustment bias controller that controls phase amounts changed by the first and second phase adjustment waveguides so as to cancel phase errors.
摘要翻译： 光调制器包括第一和第二调制波导，多路分解器，改变第一和第二调制波导的光的相位的第一和第二相位调整波导，组合来自第一和第二相位调整波导的光输出的多路复用器，增益 控制器和调制器偏置控制器，其中控制第一和第二调制信号的电压，使得将来自第一调制波导的光添加到来自第二调制波导的光，其中来自第一调制波导的光具有预定相位是相等的 将来自第一调制波导的光添加到来自第二调制波导的光，其中来自第二调制波导的光具有预定相位。 相位调整偏置控制器，其控制由第一和第二相位调整波导改变的相位量，以消除相位误差。
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40.发明申请OPTICAL TRANSFER SYSTEM, OPTICAL TRANSMISSION DEVICE, AND OPTICAL RECEPTION DEVICE 有权光传输系统，光传输设备和光接收设备公开(公告)号：US20130136451A1
公开(公告)日：2013-05-30
申请号：US13814617
申请日：2011-09-30
IPC分类号： H04J14/06
CPC分类号： H04J14/06 , H04B10/5053 , H04B10/532 , H04B10/616 , H04J14/002
摘要： In an optical transfer system, an optical transmission unit generates an optical signal in which respective polarization components are alternately present on a time axis, a time period during which the respective polarization components are simultaneously present on the time axis is substantially zero, and a symbol repetition cycle of optical signals of the respective polarization components becomes Ts, an optical reception unit causes an interference between local oscillation light and a received optical signal and converts an interfered optical signal to an electric signal, and a received electric-signal processing unit performs analog-digital conversion of an electric signal, elimination of a delay difference of Ts/2 between the respective polarized signal components, and adaptive equalization of a distortion other than the delay difference.
摘要翻译： 在光传输系统中，光传输单元产生在时间轴上交替存在各偏振分量的光信号，时间轴上同时存在各偏振分量的时间段基本上为零，以及符号 各个偏振分量的光信号的重复周期变为Ts，光接收单元引起局部振荡光和接收到的光信号之间的干扰，并将干扰的光信号转换为电信号，并且接收的电信号处理单元执行模拟 电信号的数字转换，消除各极化信号分量之间的Ts / 2的延迟差，以及除了延迟差之外的失真的自适应均衡。
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