专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP2709293A1 SYNCHRONOUS SIGNAL TRANSMISSION SYSTEM, SYNCHRONOUS DRIVE SYSTEM FOR OPTICAL MODULATOR, SYNCHRONOUS SIGNAL TRANSMISSION METHOD, AND NON-TEMPORARY COMPUTER-READABLE MEDIUM STORING PROGRAM THEREFOR 审中-公开
标题翻译：系统同步信号的传输，同步驱动系统，光调制器用于其存储程序的同步信令和非暂时性的计算机可读介质的方法
公开(公告)号：EP2709293A1
公开(公告)日：2014-03-19
申请号：EP12786296.9
申请日：2012-04-06
申请人： NEC Corporation
发明人： YAMASE, Tomoyuki
IPC分类号： H04B10/04 , G02F1/03 , G02F1/035 , H04B10/06 , H04B10/14 , H04B10/142 , H04B10/152 , H04B10/26 , H04B10/28
CPC分类号： H04L25/40 , G02F1/0121 , G02F1/2255 , G02F2001/212 , H04B10/25 , H04B10/5053 , H04B10/556 , H04L27/20
摘要： Provided are a signal synchronization transmission system, a synchronization drive system for optical modulator, a signal synchronization transmission method, and a program thereof, in which phase synchronization may be established with a high degree of accuracy.The present invention includes optical phase modulation circuits (26A, 26B) as one and another transmission processing devices that transmit a plurality of pieces of data in a phase-synchronous manner, and one and another synchronization drive means (33A, 33B) for synchronously control transmission operations of the optical phase modulation circuits. The synchronization drive means (33A, 33B) respectively include phase interpolation circuits (42, 72) that externally receive reference clocks that set operation timings of the optical phase modulation circuits (26A, 26B) through predetermined paths set in advance, and perform phase interpolation processing on the reference clocks to generate synchronization setting clocks, and synchronization setting circuits (60, 76) that set the synchronization setting clocks that are generated as timing clocks, and based on the timing clocks, synchronously set timings of data transmission operations of the optical phase modulation circuits (26A, 26B) together with transmission data signals.
摘要翻译：本发明提供一种信号同步传输系统中，用于光学调制器，信号同步传输方法的同步驱动系统，以及它们的程序，（其中相位同步可以以高度的accuracy.The本发明的建立包括光相位调制电路 26A，26B），其一个和另一个发送处理设备没有发送数据的条在相同步的方式多个，并且一个又一个的同步驱动装置（33A，33B），用于同步地控制所述光相位调制电路的传输操作。同步驱动装置（33A，33B）分别包括相位内插电路（42，72）并从外部接收参考时钟并通过在预先设定的预定路径设置的光相位调制电路（26A，26B）的动作定时，并执行相位内插在基准时钟处理，以产生同步设置时钟，和同步设定电路（60，76）并设置同步设置时钟并作为定时时钟产生，并且基于定时时钟，光的数据传输操作的同步组定时相位调制电路（26A，26B）与传输数据信号一起。

2. 发明公开

EP2592767A1 OPTICAL RECEIVER AND OPTICAL TRANSMISSION SYSTEM 审中-公开
标题翻译： OPTISCHEREMPFÄNGERUND OPTISCHESÜBERTRAGUNGSSYSTEM
公开(公告)号：EP2592767A1
公开(公告)日：2013-05-15
申请号：EP10854444.6
申请日：2010-07-09
申请人： Hitachi, Ltd.
发明人： KIKUCHI, Nobuhiko
IPC分类号： H04B10/04 , H04B10/06 , H04B10/14 , H04B10/142 , H04B10/152 , H04B10/26 , H04B10/28 , H04L27/01
CPC分类号： H04B10/00 , H04B10/60 , H04B10/612 , H04B10/677 , H04B10/697
摘要： An optical receiver 300 uses two optical delay detectors 223 (which have been set such that the delay times T are equal to symbol time and the phase differences are zero and 90 degrees) to receive an optical multilevel signal 215 and the output signals are A/D converted, thereafter subjected to retiming processes, and then subjected to a differential phase detection, thereby detecting a differential phase at a symbol center time point. In the receiver, the detected differential phase is integrated for each symbol and thereafter combined with an amplitude component obtained from a separately disposed optical intensity receiver, thereby reproducing an optical electric field. Thereafter, a wavelength dispersion compensation circuit (231) of a time period T is used to compensate for the wavelength dispersion of the transmission path. Moreover, an electric or optical Nyquist filter may be inserted to perform a band limitation, thereby enhancing the wavelength dispersion compensation effect.
摘要翻译：光接收器300使用两个光延迟检测器223（其被设置为使得延迟时间T等于符号时间并且相位差为零和90度）以接收光学多电平信号215，并且输出信号为A / D转换，然后进行重新定时处理，然后进行差分相位检测，从而在符号中心时间点检测差分相位。在接收机中，检测到的差分相位针对每个符号进行积分，然后与从单独配置的光强度接收器获得的振幅分量相结合，从而再现光电场。此后，使用时间段T的波长色散补偿电路（231）来补偿传输路径的波长色散。此外，可以插入电或光奈奎斯特滤波器以执行频带限制，从而增强波长色散补偿效果。

3. 发明公开

EP2523367A1 OPTICAL TRANSMISSION SYSTEM 审中-公开
标题翻译：光传输系统
公开(公告)号：EP2523367A1
公开(公告)日：2012-11-14
申请号：EP10842092.8
申请日：2010-01-07
申请人： Hitachi, Ltd.
发明人： KIKUCHI, Nobuhiko
IPC分类号： H04B10/04 , H04B10/06 , H04B10/14 , H04B10/142 , H04B10/152 , H04B10/26 , H04B10/28
CPC分类号： H04B10/6971 , H04B10/5561 , H04B10/677
摘要： In an optical multilevel transmitter (210), a polar representation of an optical multilevel signal (r, ϕ) is generated by a polar coordinate multilevel signal generation circuit (212), input to an optical amplitude modulator (211) and a polar coordinate type optical phase modulator (201), and output as an optical multilevel modulated signal (213). The polar coordinate type optical phase modulator (201) generates an optical phase rotation proportional to an input voltage, so the modulation distortion of the electric signal is transferred in a linear form to the optical phases of the optical multilevel modulated signal (213). In an optical multilevel receiver (219), a received signal is input to two sets of optical delay detectors (133) and balance receivers (134) and directly demodulated, and a differential phase Δϕ for the received signal is calculated by arctangent computation from the output signal. In a phase adaptive equalizer (205), the modulation distortion of the phases is removed by adaptive equalization of the differential phase Δϕ. By separately receiving the amplitude components and combining them, the modulation distortion is removed and highly sensitive optical multilevel transmission is achieved.
摘要翻译：在光学多电平发送器（210）中，极坐标多电平信号生成电路（212）生成光学多级信号（r，φ）的极坐标表示，输入到光振幅调制器（211）和极坐标类型光学相位调制器（201），并作为光学多级调制信号（213）输出。极坐标型光相位调制器（201）产生与输入电压成正比的光相位旋转，所以电信号的调制失真以线性形式传送到光多值调制信号（213）的光相位。在光学多级接收器（219）中，接收信号被输入到两组光学延迟检测器（133）和平衡接收器（134）并被直接解调，并且接收信号的差分相位Δφ通过反射输出信号。在相位自适应均衡器（205）中，通过微分相位的自适应均衡来消除相位的调制失真。通过分别接收振幅分量并将它们组合，消除了调制失真并实现了高度灵敏的光学多级传输。

4. 发明公开

EP2485413A1 MULTILEVEL MODULATED LIGHT TRANSMITTING/RECEIVING APPARATUS AND MULTILEVEL MODULATED LIGHT TRANSMITTING/RECEIVING METHOD 审中-公开
标题翻译： DEVICE FOR多级发送/接收调制光AND METHOD FOR多级发送/接收调制光
公开(公告)号：EP2485413A1
公开(公告)日：2012-08-08
申请号：EP10820483.5
申请日：2010-09-27
申请人： Mitsubishi Electric Corporation
发明人： ONOHARA, Kiyoshi , KUBO, Kazuo , MIZUOCHI, Takashi
IPC分类号： H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04J14/00 , H04J14/04 , H04J14/06 , H04L27/18 , H04L27/34
CPC分类号： H04B10/613 , H04B10/40 , H04B10/614 , H04J3/1652 , H04J14/06 , H04L27/0012 , H04L27/18 , H04L27/34
摘要： To easily realize an optical receiving circuit adapted to a plurality of modulation schemes and to obtain a multilevel modulated optical transceiver and a multilevel modulated optical transmitting/receiving method which achieve low power consumption and high speed, a digital signal processing optical transceiver (20) includes: a receiver front end (30) for separating an optical reception signal from a communication path into a total of four channels including an I-channel and a Q-channel of an X-polarized wave component and an I-channel and a Q-channel of a Y-polarized wave component; and a digital signal processing unit (50) for: performing signal point determination with respect to signals of the four channels; when there are only two signal points, determining that a modulation scheme is binary phase shift keying, and selecting two channels including an I-channel component of an X-polarized wave and an I-channel component of a Y-polarized wave and performing signal processing thereon; and when there are four signal points, determining that the modulation scheme is quadrature phase shift keying, and selecting the four channels including the I-channel component and a Q-channel component of the X-polarized wave and the I-channel component and a Q-channel component of the Y-polarized wave and performing the signal processing thereon.
摘要翻译：在光接收电路angepasst容易地实现到调制方案的多个部分并加以以获得多值调制的光收发器和调制的光发送/接收方法，该方法实现低功耗和高速多级，数字信号处理光收发器（20）包括：接收机前端（30），用于在光接收信号从一个通信路径分离成总共四个通道，包括在I信道和X偏振波成分的和到I信道和一个Q- Q信道 Y偏振波分量的信道; 和用于将数字信号处理单元（50）：相对于四个信道的信号进行信号点确定; 当只有两个信号点的，确定性的挖掘做了调制方案二进制相移键控，并选择两个通道包括在X偏振波的I频道分量和Y偏振波的I频道分量和执行信号处理在其上; 当有四个信号点，确定的挖掘做了调制方式为正交相移键控，和选择四个通道包括I信道分量和X偏振波的Q通道分量和I信道分量和 Q信道Y偏振波的分量和在其上进行的信号处理。

5. 发明授权

EP1921485B1 OPTICAL AMPLITUDE MODULATING SYSTEM CAPABLE OF REMOVING HIGH-ORDER COMPONENT 有权
标题翻译：与功能删除高阶组件的光学调幅制
公开(公告)号：EP1921485B1
公开(公告)日：2012-08-08
申请号：EP06797071.5
申请日：2006-08-30
申请人： National Institute of Information and Communications Technology, Incorporated Administrative Agency
发明人： KAWANISHI, Tetsuya, c/o National Inst. of Inf. and Com. Tech. , IZUTSU, Masayuki , SAKAMOTO, Takahide , TSUCHIYA, Masahiro
IPC分类号： G02F1/03 , G02F1/035 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152
CPC分类号： G02F1/0327 , G02F1/2255 , G02F2001/212
摘要： A DSB-SC system in which the tertiary component is suppressed. IN a DSB-SC modulating system (1) of a first aspect, a third harmonic signal generating section (17) generates an electric signal (3fm) having a frequency which is three times the frequency of a fundamental signal (fm), a phase adjusting section (18) adjusts the difference between the phases of the fundamental signal (fm) and an electric signal (3fm) having a frequency which is three times the frequency of the fundamental signal, and a signal intensity adjusting section (19) adjusts the intensity of the electric signal (3fm). As a modulating signal, the signal having a frequency 3fm is adjusted so that the phase of the primary component (f0±3fm) may be opposite to that of the tertiary component (f0±3fm) generated when a signal of fm is applied as a modulating signal and that the intensity of the primary component (f0±3fm) may be approximately equal to that of the tertiary component (f0±3fm). Therefore, they suppress each other, and DSB-SC modulation having a high extinction ratio can be achieved.

6. 发明公开

EP2405620A1 OPTICAL MULTI-LEVEL TRANSMISSION SYSTEM 审中-公开
标题翻译： OPTISCHES MEHRSTUFIGESÜBERTRAGUNGSSYSTEM
公开(公告)号：EP2405620A1
公开(公告)日：2012-01-11
申请号：EP09841125.9
申请日：2009-03-02
申请人： Hitachi, Ltd.
发明人： KIKUCHI, Nobuhiko
IPC分类号： H04L27/36 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/142 , H04B10/152 , H04B10/26 , H04B10/28
CPC分类号： H04B10/5055 , H04B10/541 , H04B10/676 , H04B10/695 , H04L25/061 , H04L27/3845
摘要： Provided is an optical multilevel transmission system, comprising at least one optical multilevel transmitter for transmitting an optical multilevel signal obtained and an optical multilevel receiver for receiving the optical multilevel signal. The received optical multilevel signal has a larger noise in an angular direction than in a radial direction. The optical multilevel receiver sets, in a symbol decision of the received optical multilevel signal demodulated on the complex plane, for positions of all or some of ideal signal points, a width in the angular direction of a decision area, to which each of the ideal signal points belongs and which is measured along a circumference of a circle centered at an origin and passing through a center of the each of the ideal signal points, larger than a width in the angular direction of a decision area defined based on a Euclidean distance.
摘要翻译：提供了一种光学多电平传输系统，其包括至少一个用于发射所获得的光学多电平信号的光学多电平发射器和用于接收光学多电平信号的光学多电平接收器。所接收的光学多电平信号在角度方向上具有比在径向方向上更大的噪声。光复用多电平接收机在复平面解调的接收光多电平信号的符号判定中，对于理想信号点的全部或部分的位置，将决定区域的角度方向上的宽度设定为每个理想信号点信号点属于并且沿着以原点为中心的圆的圆周测量，并且穿过每个理想信号点的中心，大于基于欧几里得距离定义的判定区域的角度方向上的宽度。

7. 发明授权

EP2034647B1 OPTICAL CODE COMMUNICATION SYSTEM 有权
标题翻译：光学编码传输系统
公开(公告)号：EP2034647B1
公开(公告)日：2011-05-25
申请号：EP07741190.8
申请日：2007-04-06
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： YOSHINO, Manabu , MIKI, Noriki , KANEKO, Shin , TANIGUCHI, Tomohiro
IPC分类号： H04J14/00 , H04B1/707 , H04B10/02 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04B10/18 , H04J14/04 , H04J14/06
CPC分类号： H04J14/005 , H04B10/61 , H04B10/614 , H04B10/63
摘要： An optical code communication system comprises an optical transmitter, an optical receiver, and an optical transmission channel. The optical receiver has an optical mixing decoder for mixing a code light and a local oscillation light, branching the mixed light into an object light frequency and a nonobject light frequency, and outputting the lights and a detection addition/subtraction filter for detecting the object light frequency and the nonobject light frequency, filtering the intermediated frequency signals, subtracting one of the intermediate frequency from the other, and outputting the resultant frequency. The code light and the local oscillation light are coherent with each other between the optical frequency chips constituting the code light when detected. The light mixing decoder or detection addition/subtraction filter regulates the phase of the intermediate frequency signal within the pass band when filtered so that the output value or the absolute value of the intermediate frequency signal within the pass band when filtered is different when the optical receiver receives a code light modulated with a different value of the transmission data.

8. 发明公开

EP2188921A2 ELECTRICALLY CONTROLLED OPTICAL OSCILLATOR FOR A SINGLE-SIDE-SUBCARRIER OPTICAL PHASE-LOCKED LOOP 有权
标题翻译：电控光振荡器用于光学EINSEITENHILFSTRÄGER相回路
公开(公告)号：EP2188921A2
公开(公告)日：2010-05-26
申请号：EP08789013.3
申请日：2008-08-06
申请人： Fondazione Torino Wireless , Istituto Superiore Mario Boella sulle Tecnologie dell'Informazione e delle Telecomunicazioni , Politecnico di Torino
发明人： FERRERO, Valter , CAMATEL, Stefano
IPC分类号： H04B10/142 , H04L7/033 , H04B10/148 , H03L7/099
CPC分类号： H04B10/63 , H04B10/61 , H04B10/6151
摘要： An electrically controlled optical oscillator (4) for a single subcarrier optical phase-locked loop, which includes: an electrically controlled electrical oscillator (8) having an input, which receives an electrical driving input signal (V
PDF ), and an output, which supplies an electrical driving output signal (V
EVCO ) that has a frequency (F
EVCO ) that is a function of the electrical driving input signal (V
PDF ); a continuous -wave laser source (9), which supplies an optical carrier (S
OC ); and an optical modulator (12), which has an optical input connected to the laser source (9) and receives the optical carrier (S
OC ) / an electrical input, which is connected to the output of the electrically controlled electrical oscillator (8) and receives the electrical driving output signal (V
EVCO ) / and an optical output that modulates the optical carrier (S
OC ) with the electrical driving output signal (V
EVCO ) and generates an optical modulated signal (S
→
2 ). The optical modulator (12) generates an optical modulated signal (S
→
2 ) with single optical subcarrier.

9. 发明公开

EP2136484A1 VISIBLE LIGHT TRANSMITTER, VISIBLE LIGHT RECEIVER, VISIBLE LIGHT COMMUNICATION SYSTEM, AND VISIBLE LIGHT COMMUNICATION METHOD 有权转让
标题翻译：具有与可见光和通信方式使可见光可见光通信系统可见光接收器STATION
公开(公告)号：EP2136484A1
公开(公告)日：2009-12-23
申请号：EP07860136.6
申请日：2007-12-26
申请人： Samsung Electronics Co., Ltd.
发明人： TOGASHI, Mitsuhiro
IPC分类号： H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04N9/64 , H04N11/00 , H04N11/24
CPC分类号： H04B10/116 , H04N7/22 , H04N9/64 , H04N11/04
摘要： A visible light communication system having a transmission apparatus for modulating a transmission signal to a multiple-value number and a reception apparatus for demodulating a multiple-value modulated transmission signal is provided. The transmission apparatus includes a plurality of light emitters for emitting light in different colors, a chromaticity coordinates calculator for mapping a digital value to a chromaticity coordinates value, and a light intensity controller for controlling a light intensity of each of the light emitters based on the chromaticity coordinates value corresponding to the digital value. The reception apparatus includes a plurality of light receivers having different spectral characteristics, a chromaticity coordinates calculator for calculating a chromaticity coordinates value according to a received light intensity detected by each of the light receivers, and a demodulator for demodulating the digital value from the chromaticity coordinates value.
摘要翻译：提供了一种具有用于调制的发射信号的一个多值的数目和用于解调的多值调制后的发送信号的接收装置的发送装置的可见光通信系统。所述发送装置包括：光发射器用于发射不同颜色的光的多个，色度坐标计算器，用于将数字值映射到色度坐标值，以及基于所述用于控制每个发光器的光强度的光强度控制装置色度坐标值对应的数字值。所述接收装置包括具有不同光谱特性的光接收器复数，色度坐标计算器，用于计算色度坐标值雅丁由每个光接收器检测到的接收光强度，以及用于从色度坐标解调数字值的解调器值。

10. 发明公开

EP1953931A9 PHOTORECEPTOR USING MACH-ZEHNDER INTERFEROMETER 有权转让
标题翻译：与Mach-Zehnder干涉PR
公开(公告)号：EP1953931A9
公开(公告)日：2009-01-07
申请号：EP06756401.3
申请日：2006-05-19
申请人： NTT ELECTRONICS CORPORATION , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： YONEYAMA, Mikio , SAITOU, Fumiaki , ONO, Shigeru , TAKEUCHI, Yosuke , YONENAGA, Kazushige , KUWAHARA, Shoichiro , YOSHIDA, Eiji , MIYAMOTO, Yutaka , KAWAKAMI, Hiroto
IPC分类号： H04B10/04 , G02F1/01 , H04B10/06 , H04B10/14 , H04B10/142 , H04B10/152 , H04B10/26 , H04B10/28 , H04L27/22
CPC分类号： H04L27/2071 , G02F1/0327 , H04B10/677 , H04L27/223
摘要： The present invention relates to an optical receiver, in which the transmittance of a Mach-Zehnder interferometer can be locked at a normal operation point in a simple structure and control.
A transmittance detecting circuit and a minute modulation signal detecting circuit are provided in parallel after a balanced optical receiver, and a switch is selectively connectable either a minute modulation signal detecting circuit and a transmittance detecting circuit. In the initial stage of frequency pull-in, the switch is set to connect the transmittance detecting circuit to the synchronous detection circuit. If the transmittance detecting circuit detects that the transmittance of the Mach-Zehnder interferometer at the carrier frequency becomes a desired transmittance, the connection of the switch is switched from the transmittance detecting circuit to the minute modulation signal detecting circuit.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式