公开(公告)号：US08064544B2

公开(公告)日：2011-11-22

申请号：US12613610

申请日：2009-11-06

申请人： Liangchuan Li ,  Chan Zhao ,  Lun Wei

发明人： Liangchuan Li ,  Chan Zhao ,  Lun Wei

IPC分类号： H04L27/22 ,  H03D3/22

CPC分类号： H04B10/677

摘要： In the field of communication and transmission, a method and a device for receiving an OPFDM-DQPSK signal are provided. The device includes a power splitter, adapted to split the OPFDM-DQPSK signal into two beams of signals; a polarization beam splitter (PBS), adapted to splitting one of the two beams of signals into a first signal and a second signal; a demultiplexer (Demux), adapted to demultiplex the other beam of signal to obtain a third signal and a fourth signal; two delayers, adapted to delay the third signal and the fourth signal respectively; a first frequency-mixing receiving module, adapted to perform frequency-mixing receiving on the first signal and the delayed third signal; a second frequency-mixing receiving module, adapted to perform frequency-mixing receiving on the second signal and the delayed fourth signal; and a decision recovery module, adapted to recover four logical sequences by performing decision on the four electrical signals.

摘要翻译： 在通信和传输领域中，提供了一种用于接收OPFDM-DQPSK信号的方法和装置。 该装置包括功率分配器，适于将OPFDM-DQPSK信号分成两束信号; 偏振分束器（PBS），适于将两束信号中的一个分成第一信号和第二信号; 解复用器（Demux），适于解复用另一个信号束以获得第三信号和第四信号; 两个延迟器，分别适于延迟第三信号和第四信号; 第一混频接收模块，适于对所述第一信号和所延迟的第三信号执行频率混合接收; 第二混频接收模块，适于对第二信号和延迟的第四信号执行频率混合接收; 以及决定恢复模块，用于通过对四个电信号进行判定来恢复四个逻辑序列。

公开(公告)号：US20100166423A1

公开(公告)日：2010-07-01

申请号：US12617890

申请日：2009-11-13

申请人： Deyuan Chang ,  Yuanyuan Fang ,  Chan Zhao ,  Qianjin Xiong

发明人： Deyuan Chang ,  Yuanyuan Fang ,  Chan Zhao ,  Qianjin Xiong

IPC分类号： H04J14/06

CPC分类号： H04J14/06 ,  H04J14/0258 ,  H04J14/0276 ,  H04J14/0279

摘要： A method, device, and system for polarization division multiplexing (PDM) and polarization division demultiplexing are provided in the field of communication and transmission. The device for polarization division demultiplexing includes a polarization controller (PC), a polarization beam splitter (PBS), a detection control module, an optoelectronic receiver 1, and an optoelectronic receiver 2. The PC is adapted to receive a PDM optical signal carrying an identification signal and perform polarization control on the PDM optical signal. The PBS is adapted to perform polarization division on the PDM optical signal carrying the identification signal after the polarization control. The detection control module is adapted to perform identification signal detection on the optical signal after the polarization division to obtain a power of the identification signal, and output a polarization control signal to control the PC according to a power change of the identification signal. The optoelectronic receiver 1 and the optoelectronic receiver 2 are adapted to perform demodulation reception on an X-polarization branch optical signal and a Y-polarization branch optical signal respectively to obtain a first original signal and a second original signal. Thereby, during polarization division demultiplexing, reversal of two demultiplexed polarization branches is effectively avoided.

摘要翻译： 在通信和传输领域中提供了用于偏振分割复用（PDM）和偏振分解解复用的方法，装置和系统。 用于偏振分解解复用的装置包括偏振控制器（PC），偏振分束器（PBS），检测控制模块，光电接收器1和光电接收器2.PCI适于接收携带 识别信号，并对PDM光信号执行偏振控制。 PBS适用于在偏振控制后携带识别信号的PDM光信号上执行偏振分割。 检测控制模块，用于对偏振分割后的光信号进行识别信号检测，得到识别信号的功率，输出偏振控制信号，根据识别信号的功率变化来控制PC。 光电接收器1和光电接收器2分别适用于在X偏振分支光信号和Y偏振分支光信号上执行解调接收以获得第一原始信号和第二原始信号。 因此，在偏振分解解复用期间，有效地避免了两个解复用的偏振分支的反转。

公开(公告)号：US08229296B2

公开(公告)日：2012-07-24

申请号：US12512826

申请日：2009-07-30

申请人： Chan Zhao

发明人： Chan Zhao

IPC分类号： H04B10/00

CPC分类号： H04J3/1694 ,  H04J3/14 ,  H04J3/1652 ,  H04Q11/0067 ,  H04Q2011/0081

摘要： A method for channel protection switching of an optical network device, an Optical Transport Network (OTN) device, and a Passive Optical Network (PON) device is provided. The method includes detecting, by the PON device, whether an OTN alarm indication signal is received after discovering a fault. If the OTN alarm indication signal is received, the alarm generated by the PON device is suppressed so that the PON device does not perform channel protection switching. The PON device detects whether an OTN alarm indication signal is received, and suppresses the alarm generated by the PON device so that the PON does not generate futile alarms or lead to futile switching when the OTN fails but the PON works normally.

摘要翻译： 提供了一种光网络设备，光传送网（OTN）设备和被动光网络（PON）设备的信道保护倒换方法。 该方法包括由PON设备检测到在发现故障之后是否接收到OTN告警指示信号。 如果接收到OTN报警指示信号，则会抑制由PON设备产生的报警，使PON设备不进行信道保护倒换。 PON设备检测是否接收到OTN报警指示信号，并且抑制PON设备产生的报警，使得PON在OTN故障但PON正常工作时不会产生无效报警或导致无效切换。

公开(公告)号：US20120057884A1

公开(公告)日：2012-03-08

申请号：US13294734

申请日：2011-11-11

申请人： Chan Zhao ,  Wentong Wan

发明人： Chan Zhao ,  Wentong Wan

IPC分类号： H04B10/06 ,  H04L27/06

CPC分类号： H04B10/69 ,  H04B10/63

摘要： A method, an apparatus, and a system for feedback control of a coherent receiver are provided. The method for feedback control of the coherent receiver includes: obtaining a feedback control quantity according to a digital signal converted by an Analog-to-Digital Converter (ADC); and adjusting a signal amplitude output by a Transimpedance Amplifier (TIA) and a direct current component of an offset T device according to the feedback control quantity, until an analog signal input into the ADC is in a sampling range of the ADC, where the TIA is serially connected to the offset T device and then is connected to the ADC. Present invention has the following advantages: enabling the analog signal to adapt to the ADC sampling best, maximizing an effective information quantity sampled by the ADC and better supporting subsequent processing of a Digital Signal Processing (DSP) unit, thereby improving a coherent receiving performance.

摘要翻译： 提供了一种用于相干接收机的反馈控制的方法，装置和系统。 用于相干接收机的反馈控制的方法包括：根据由模数转换器（ADC）转换的数字信号获得反馈控制量; 并根据反馈控制量调整由跨阻抗放大器（TIA）输出的信号幅度和偏移T器件的直流分量，直到输入到ADC的模拟信号处于ADC的采样范围，其中TIA 串行连接到偏移T器件，然后连接到ADC。 本发明具有以下优点：使得模拟信号能够最佳地适应ADC采样，最大化ADC采样的有效信息量，并更好地支持数字信号处理（DSP）单元的后续处理，从而提高一致的接收性能。

公开(公告)号：US08781333B2

公开(公告)日：2014-07-15

申请号：US13366044

申请日：2012-02-03

申请人： Fabian Nikolaus Hauske ,  Chan Zhao

发明人： Fabian Nikolaus Hauske ,  Chan Zhao

IPC分类号： H04B10/00

CPC分类号： H04L7/027 ,  H04B10/614 ,  H04B10/616

摘要： The invention relates to a clock recovery apparatus being configured to recover clock information from an input signal. The clock recovery apparatus comprises Fourier transforming means (201) being configured to transform the input signal into a frequency domain signal upon the basis of a Fourier transform, correlating means (215) being configured to correlate the frequency domain signal to obtain a correlation value associated with a certain frequency, and clock recovery means (217) being configured to determine whether the certain frequency corresponds to a clock frequency in order to recover the clock information.

摘要翻译： 本发明涉及一种被配置为从输入信号中恢复时钟信息的时钟恢复装置。 时钟恢复装置包括傅立叶变换装置（201），其被配置为基于傅立叶变换将输入信号变换为频域信号，相关装置（215）被配置为使频域信号相关联，以获得相关联的相关值 具有一定的频率，并且时钟恢复装置（217）被配置为确定某个频率是否对应于时钟频率，以便恢复时钟信息。

公开(公告)号：US20080124075A1

公开(公告)日：2008-05-29

申请号：US11985777

申请日：2007-11-16

申请人： Xiaogeng Xu ,  Chan Zhao

发明人： Xiaogeng Xu ,  Chan Zhao

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04J3/0682 ,  H04Q11/0067 ,  H04Q2011/0079

摘要： A ranging method and system for passive optical network, and an optical network unit are provided. The ranging method includes: sending an initial ranging signal to a splitter loop-back device and recording a current sending time as a first time; receiving a loop-back ranging signal from the splitter loop-back device, and determining whether the loop-back ranging signal is a return signal of the initial ranging signal; if the loop-back ranging signal is a return signal of the initial ranging signal, recording a current receiving time as a second time; and obtaining ranging information by calculating a difference between the first time and the second time, and performing a ranging on the basis of the ranging information.

摘要翻译： 提供无源光网络的测距方法和系统，以及光网络单元。 测距方法包括：将初始测距信号发送到分离器环回设备并且首次记录当前发送时间; 从所述分离器环回设备接收环回测距信号，以及确定所述环回测距信号是否是所述初始测距信号的返回信号; 如果环回测距信号是初始测距信号的返回信号，则记录当前接收时间作为第二次; 以及通过计算第一时间和第二时间之间的差异来获得测距信息，并且基于测距信息执行测距。

公开(公告)号：US08848747B2

公开(公告)日：2014-09-30

申请号：US13347863

申请日：2012-01-11

申请人： Li Zeng ,  Chan Zhao ,  Changsong Xie

发明人： Li Zeng ,  Chan Zhao ,  Changsong Xie

IPC分类号： H04J3/06 ,  H04J3/14 ,  H04J3/16

CPC分类号： H04J3/14 ,  H04B10/614 ,  H04B10/616 ,  H04J3/1652

摘要： A method for recovering an OTUk frame includes: receiving an optical signal sent by using a method of multi-lane distribution from the OTUk frame to an interface of an optical module; converting the optical signal into an electrical signal, performing electrical equalization and demodulation on the electrical signal, and recovering multi-lane data from the demodulated signal; aligning and rearranging the data on each lane, according to a lane sequence identifier included in an overhead frame header of the data on each lane; and recovering the OTUk frame according to the aligned and rearranged data. According to the present invention, lane rearrangement is performed by detecting the lane sequence identifier, and the recovery of the OTUk frame is achieved. Therefore, a training sequence overhead does not need to be additionally introduced, and the influence on the system performance is avoided.

摘要翻译： 一种用于恢复OTUk帧的方法包括：接收通过使用从OTUk帧到光模块的接口的多通道分配方法发送的光信号; 将光信号转换成电信号，对电信号执行电均衡和解调，以及从解调信号中恢复多通道数据; 根据包括在每个车道上的数据的开销帧头中的车道序列标识符，对每个车道上的数据进行排列和重排; 并根据对齐和重新排列的数据恢复OTUk帧。 根据本发明，通过检测车道序列标识符来执行车道重排，并且实现了OTUk帧的恢复。 因此，不需要额外引入训练序列开销，避免对系统性能的影响。

公开(公告)号：US20120177156A1

公开(公告)日：2012-07-12

申请号：US13366044

申请日：2012-02-03

申请人： Fabian Nikolaus Hauske ,  Chan Zhao

发明人： Fabian Nikolaus Hauske ,  Chan Zhao

IPC分类号： H04B1/06 ,  H04L7/00

CPC分类号： H04L7/027 ,  H04B10/614 ,  H04B10/616

摘要： The invention relates to a clock recovery apparatus being configured to recover clock information from an input signal. The clock recovery apparatus comprises Fourier transforming means (201) being configured to transform the input signal into a frequency domain signal upon the basis of a Fourier transform, correlating means (215) being configured to correlate the frequency domain signal to obtain a correlation value associated with a certain frequency, and clock recovery means (217) being configured to determine whether the certain frequency corresponds to a clock frequency in order to recover the clock information.

摘要翻译： 本发明涉及一种被配置为从输入信号中恢复时钟信息的时钟恢复装置。 时钟恢复装置包括傅立叶变换装置（201），其被配置为基于傅立叶变换将输入信号变换为频域信号，相关装置（215）被配置为使频域信号相关联，以获得相关联的相关值 具有一定的频率，并且时钟恢复装置（217）被配置为确定某个频率是否对应于时钟频率，以便恢复时钟信息。

公开(公告)号：US07925157B2

公开(公告)日：2011-04-12

申请号：US11985777

申请日：2007-11-16

申请人： Xiaogeng Xu ,  Chan Zhao

发明人： Xiaogeng Xu ,  Chan Zhao

IPC分类号： G02B6/28 ,  H04J14/08 ,  H04J14/00 ,  H04B10/06 ,  H04B10/20 ,  H04Q11/02 ,  H04L12/66

CPC分类号： H04J3/0682 ,  H04Q11/0067 ,  H04Q2011/0079

摘要： A ranging method and system for passive optical network, and an optical network unit are provided. The ranging method includes: sending an initial ranging signal to a splitter loop-back device and recording a current sending time as a first time; receiving a loop-back ranging signal from the splitter loop-back device, and determining whether the loop-back ranging signal is a return signal of the initial ranging signal; if the loop-back ranging signal is a return signal of the initial ranging signal, recording a current receiving time as a second time; and obtaining ranging information by calculating a difference between the first time and the second time, and performing a ranging on the basis of the ranging information.

摘要翻译： 提供无源光网络的测距方法和系统，以及光网络单元。 测距方法包括：将初始测距信号发送到分离器环回设备并且首次记录当前发送时间; 从所述分离器环回设备接收环回测距信号，以及确定所述环回测距信号是否是所述初始测距信号的返回信号; 如果环回测距信号是初始测距信号的返回信号，则记录当前接收时间作为第二次; 以及通过计算第一时间和第二时间之间的差异来获得测距信息，并且基于测距信息执行测距。

公开(公告)号：US10660618B2

公开(公告)日：2020-05-26

申请号：US14915215

申请日：2015-09-08

申请人： Chan Zhao

发明人： Chan Zhao

IPC分类号： A61B10/00 ,  A61F9/007

摘要： The present invention discloses a disposable negative-pressure anterior chamber Paracentesis syringe which belongs to the technical field of medical supplies. It comprises nine parts, including a needle cap, a Paracentesis syringe, a needle base, an internal needle, a protective cover of the internal needle, an airlock, a needle tube, a collection tube and a collection tube rack. The invention has the advantages that it fixes the Paracentesis syringe during puncture and limits the depth of the needle insertion, releases the aqueous humor slowly to prevent a sudden drop of the intraocular pressure, reduces the risk of the intraocular infection by separating the anterior chamber from outside and the collection tube can collect and store the aqueous humor directly.