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. 发明授权

US09025969B2 Method with improved phase robustness in coherent detected optical system 有权
标题翻译：相干检测光学系统相位鲁棒性提高的方法
公开(公告)号：US09025969B2
公开(公告)日：2015-05-05
申请号：US13480230
申请日：2012-05-24
申请人： Chuandong Li , Yuanjie Chen , Zhuhong Zhang , Yi Cai , Fei Zhu
发明人： Chuandong Li , Yuanjie Chen , Zhuhong Zhang , Yi Cai , Fei Zhu
IPC分类号： H04B10/06 , H04B10/61
CPC分类号： H04B10/613 , H04B10/6164
摘要： An optical signal receiver tracks local oscillator frequency offset (LOFO) and compensates for the phase distortion introduced in the received signals as a result of utilizing the local oscillator within a coherent detection scheme. This phase distortion is basically a constant phase rotation caused by the LOFO and implementation of the receiver using coherent detection and a digital interferometer instead of a conventional (yet complex) carrier phase estimation or recovery scheme. With an optical receiver implemented in this manner, the requirement of using a precise local oscillator laser with low frequency offset is less important.
摘要翻译：光信号接收器跟踪本地振荡器频率偏移（LOFO），并且通过在相干检测方案中利用本地振荡器来补偿在接收信号中引入的相位失真。该相位失真基本上是由LOFO引起的恒定相位旋转和使用相干检测的接收机的实现以及数字干涉仪而不是常规（但复杂的）载波相位估计或恢复方案。通过以这种方式实现的光接收机，使用具有低频偏移的精确本地振荡器激光器的要求不那么重要。

2. 发明授权

US08732561B2 System and method for forward error correction decoding using soft information 有权
标题翻译：使用软信息进行前向纠错解码的系统和方法
公开(公告)号：US08732561B2
公开(公告)日：2014-05-20
申请号：US11937706
申请日：2007-11-09
申请人： Yi Cai , Jin-Xing Cai , Morten Nissov
发明人： Yi Cai , Jin-Xing Cai , Morten Nissov
IPC分类号： H03M13/00
CPC分类号： H04L25/067 , H03M13/2957 , H03M13/3723 , H04B10/60 , H04L1/0045 , H04L27/2331
摘要： A system and method for soft decision forward error correction (FEC) decoding may be used to determine a possible error in a differential detection signal, for example, in a DPSK system. The system and method uses the constructive and destructive signals from a demodulator to provide an error locating signal. Using the error locating signal, the system and method converts the differential detection signal into a soft decision signal including multi-level soft values.
摘要翻译：用于软判决前向纠错（FEC）解码的系统和方法可以用于例如在DPSK系统中确定差分检测信号中的可能误差。该系统和方法使用来自解调器的建设性和破坏性的信号来提供错误定位信号。使用误差定位信号，系统和方法将差分检测信号转换为包括多级软值的软判决信号。

3. 发明授权

US08340530B2 Local oscillator frequency offset compensation in a coherent optical signal receiver 有权
标题翻译：相干光信号接收机中的本地振荡器频偏补偿
公开(公告)号：US08340530B2
公开(公告)日：2012-12-25
申请号：US12718177
申请日：2010-03-05
申请人： Yi Cai
发明人： Yi Cai
IPC分类号： H04B10/00 , H04B10/06 , H04J14/02
CPC分类号： H04B10/61 , H04B10/611 , H04B10/612 , H04B10/614 , H04B10/6162 , H04B10/6164 , H04B10/6165 , H04L27/223
摘要： A system and method implementing dual stage carrier frequency offset compensation (FOC) in a coherent receiver for an optical communication system. In the first stage, a feed forward FOC function compensates for relatively slowly drifting frequency offsets. In a second stage, a decision-feedback FOC function compensates for relatively quickly drifting frequency offsets. The feed forward frequency offset compensation may be implemented with a feed forward carrier phase estimation function and the decision-feedback frequency offset compensation may be implemented with a decision-feedback carrier phase estimation function.
摘要翻译：一种在光通信系统的相干接收机中实现双级载波频偏补偿（FOC）的系统和方法。在第一阶段，前馈FOC功能补偿相对缓慢的漂移频率偏移。在第二阶段，决策反馈FOC功能补偿相对快速的漂移频率偏移。可以利用前馈载波相位估计功能实现前馈频率偏移补偿，并且可以使用判决反馈载波相位估计功能来实现判决反馈频率偏移补偿。

4. 发明申请

US20120093510A1 CORRELATION -CONTROL QPSK TRANSMITTER 失效
标题翻译：相关-CONTROL QPSK发射机
公开(公告)号：US20120093510A1
公开(公告)日：2012-04-19
申请号：US12905717
申请日：2010-10-15
申请人： Hongbin Zhang , Yu Sun , Carl Davidson , Yi Cai
发明人： Hongbin Zhang , Yu Sun , Carl Davidson , Yi Cai
IPC分类号： H04J14/06 , H04B10/04 , H04J14/00
CPC分类号： H04B10/5561 , H04J14/06 , H04L5/04 , H04L25/03178 , H04L27/2096
摘要： An optical transmitter utilizing a multi-level data modulator to produce a PDM-QPSK signal, a one-bit delay interferometer configured to correlate the multi-level data modulated signal and an optical filter configured to combine the correlated multi-level data modulated signal with one or more neighboring signals prior to transmitting over one of a plurality of optical channels. The PDM-QPSK correlated signal is configured to reduce the signal spectrum thereby increasing spectral efficiency of the transmitted signal.
摘要翻译：一种利用多电平数据调制器产生PDM-QPSK信号的光发射机，配置成将多电平数据调制信号相关联的一位延迟干涉仪和配置成将相关多电平数据调制信号与一个或多个相邻信号在通过多个光学信道之一发送之前。 PDM-QPSK相关信号被配置为减少信号频谱，从而提高发射信号的频谱效率。

5. 发明授权

US07817445B2 Computer power supply 失效
标题翻译：电脑电源
公开(公告)号：US07817445B2
公开(公告)日：2010-10-19
申请号：US11967082
申请日：2007-12-29
申请人： Yi-Cai Tan , Ren-Jun Xiao , Zhi-Sheng Yuan
发明人： Yi-Cai Tan , Ren-Jun Xiao , Zhi-Sheng Yuan
IPC分类号： H02M3/335
CPC分类号： G06F1/3203 , G06F1/3246
摘要： A power supply for a computer includes a transformer, a rectifier, a pulse width modulation (PWM) controller, a relay, a power switch, and a battery. The PWM controller includes a voltage terminal and a pulse terminal. The relay includes a switch and an inductance coil. An alternating current (AC) power supply is connected to a primary inductance coil of the transformer via the rectifier. A secondary inductance coil of the transformer provides a standby voltage. A positive voltage terminal of the rectifier is connected to the pulse terminal of the PWM controller via the primary inductance coil of the transformer. The switch is connected between the positive voltage terminal of the rectifier and the voltage terminal of the PWM controller. The inductance coil and the power switch are connected in series between the battery and ground. The power switch is controlled by powering on or off the computer.
摘要翻译：计算机的电源包括变压器，整流器，脉冲宽度调制（PWM）控制器，继电器，电源开关和电池。 PWM控制器包括电压端子和脉冲端子。继电器包括开关和电感线圈。交流（AC）电源通过整流器连接到变压器的初级电感线圈。变压器的次级电感线圈提供待机电压。整流器的正电压端子通过变压器的初级电感线圈连接到PWM控制器的脉冲端子。开关连接在整流器的正极端子和PWM控制器的电压端子之间。电感线圈和电源开关串联在电池和地之间。电源开关通过打开或关闭电脑进行控制。

6. 发明申请

US20100232797A1 Detection of Data in Signals with Data Pattern Dependent Signal Distortion 有权
标题翻译：用数据模式相关信号失真检测信号中的数据
公开(公告)号：US20100232797A1
公开(公告)日：2010-09-16
申请号：US12718154
申请日：2010-03-05
申请人： Yi Cai , Morten Nissov , Alexei N. Pilipetskii
发明人： Yi Cai , Morten Nissov , Alexei N. Pilipetskii
IPC分类号： H04J14/02 , H04B1/10 , H04L27/06 , H04B10/06
CPC分类号： H04L27/066 , H04J14/02 , H04J14/0279 , H04L1/005 , H04L1/203 , H04L1/208 , H04L5/0008 , H04L25/03171 , H04L27/223 , H04L27/227 , H04L27/3818 , H04L2027/0067 , H04L2027/0095
摘要： A detection system and method may be used to detect data transmitted in a signal with data pattern dependent signal distortion such as intersymbol interference. In general, a detection system and method compares samples of a received signal with stored samples of distorted signals associated with known data patterns and selects the known data patterns that correspond most closely with the samples of the received signal. The detection system and method may thus mitigate the effects of data pattern dependent signal distortion.
摘要翻译：可以使用检测系统和方法来检测在具有数据模式相关信号失真的信号中发送的数据，例如符号间干扰。通常，检测系统和方法将接收信号的样本与已知数据模式相关联的失真信号的存储样本进行比较，并且选择与接收信号的采样最紧密对应的已知数据模式。因此，检测系统和方法可以减轻数据模式相关信号失真的影响。

7. 发明申请

US20080260877A1 Plant extracts and compositions for reducing blood lipid levels 审中-公开
标题翻译：用于降低血脂水平的植物提取物和组合物
公开(公告)号：US20080260877A1
公开(公告)日：2008-10-23
申请号：US11633807
申请日：2006-12-05
申请人： Birch Bai , Yi-Cai Fu , XiangGuo Si
发明人： Birch Bai , Yi-Cai Fu , XiangGuo Si
IPC分类号： A61K36/424 , A01H5/00 , A61P9/00
CPC分类号： A61K36/424 , A23F3/00 , A23F3/16 , A23L33/105 , A23V2002/00 , A61K36/488 , A61K36/82 , A61K2300/00 , A23V2200/326 , A23V2250/21
摘要： An extract of a plant of the genus Gynostemma is described. The extract is obtainable by a process wherein an aqueous extract is further extracted with n-butanol. The extract has a high level of actives, such as saponins, and/or a low level of impurities. The extract is particularly suitable for use in food or beverage compositions owing to its high purity and clean taste. Such compositions may be used to reduce the blood lipid levels of an individual and provide associated health benefits.
摘要翻译：描述绞股蓝属植物的提取物。提取物可通过其中将水提取物进一步用正丁醇萃取的方法获得。提取物具有高水平的活性物质，例如皂苷，和/或低水平的杂质。由于其高纯度和干净的味道，该提取物特别适用于食品或饮料组合物。这样的组合物可用于降低个体的血脂水平并提供相关的健康益处。

8. 发明授权

US07403021B2 Testing circuit for a data interface 失效
标题翻译：数据接口的测试电路
公开(公告)号：US07403021B2
公开(公告)日：2008-07-22
申请号：US11518791
申请日：2006-09-11
申请人： Yi-Cai Tan , Ren-Jun Xiao , Kun-Lung Wu
发明人： Yi-Cai Tan , Ren-Jun Xiao , Kun-Lung Wu
IPC分类号： G01R31/04
CPC分类号： G01R31/31715 , G01R31/31703
摘要： A testing circuit for an interface includes a load feeding circuit and a voltage testing circuit. The load feeding circuit includes a resistance-regulating unit, a first comparator, a pass element, and a capacitor. The resistance-regulating unit is connected to a positive input of the first comparator. A negative input of the first comparator is connected to the capacitor and a first terminal of the pass element. An output of the first comparator is connected to a second terminal of the pass element. A third terminal of the pass element is connected to the interface. The voltage testing circuit includes a second comparator and a display member connected to the second comparator. The voltage of the interface and a reference voltage are input to inputs of the second comparator, and the second comparator outputs a signal to control the display member to display a comparison result.
摘要翻译：用于接口的测试电路包括负载馈电电路和电压测试电路。负载馈送电路包括电阻调节单元，第一比较器，通过元件和电容器。电阻调节单元连接到第一比较器的正输入端。第一比较器的负输入连接到电容器和通过元件的第一端子。第一比较器的输出端连接到通过元件的第二端子。传递元件的第三个端子连接到接口。电压测试电路包括连接到第二比较器的第二比较器和显示器件。接口的电压和参考电压被输入到第二比较器的输入端，第二比较器输出信号以控制显示器件显示比较结果。

9. 发明授权

US07130030B2 System and method for rapidly achieving optimum dispersion in optical transmission systems 有权
标题翻译：快速实现光传输系统最佳色散的系统和方法
公开(公告)号：US07130030B2
公开(公告)日：2006-10-31
申请号：US10677193
申请日：2003-10-02
申请人： Carl R. Davidson , Robert R. Cordell , Yi Cai , Hongbin Zhang
发明人： Carl R. Davidson , Robert R. Cordell , Yi Cai , Hongbin Zhang
IPC分类号： G01N21/00
CPC分类号： H04B10/25133 , H04B10/07951 , H04B10/2513 , H04B10/697 , H04J14/02
摘要： A system and method for optimizing dispersion in an optical transmission line is provided. The system and method comprise measuring the amplitude of a d.c. voltage component of a synchronously demodulated data signal of at least one wavelength channel by an in-phase carrier at the baud frequency of the wavelength channel. In an alternative embodiment, the system and method comprise measuring the IF amplitude of the resulting a.c. signal of a data signal of the at least one wavelength channel comprising a received RZ signal mixed with a local oscillator, whose frequency differs from the wavelength channel baud by a relatively small amount, somewhere on the order of about 100 kHz.
摘要翻译：提供了一种用于优化光传输线中的色散的系统和方法。该系统和方法包括测量直流的振幅。通过同相载波在波长信道的波特率下的至少一个波长信道的同步解调数据信号的电压分量。在替代实施例中，系统和方法包括测量所产生的交流电的IF幅度。所述至少一个波长信道的数据信号的信号包括与本地振荡器混合的接收到的RZ信号，所述本地振荡器的频率与波长信道波特相差相对较小的量，约为100kHz的数量级。

10. 发明授权

US08958515B2 SerDes jitter tolerance BIST in production loopback testing with enhanced spread spectrum clock generation circuit 有权
标题翻译： SerDes抖动容限BIST在增强扩频时钟发生电路的生产环回测试中
公开(公告)号：US08958515B2
公开(公告)日：2015-02-17
申请号：US13096454
申请日：2011-04-28
申请人： Yi Cai , Ivan Chan , Liming Fang , Max J. Olsen
发明人： Yi Cai , Ivan Chan , Liming Fang , Max J. Olsen
IPC分类号： H04L7/00 , H04L25/00 , H04L25/40 , G06G7/16 , G01R31/317 , H04B15/04
CPC分类号： G06G7/16 , G01R31/31709 , H04B15/04 , H04L7/00
摘要： A system for controllably generating jitter in a serial data stream includes a frequency generator and first and second mixers. The frequency generator is configured to output in-phase and quadrature local oscillator signals with a local oscillator frequency of at least about 5 MHz. The local oscillator frequency varies between a selectable minimum frequency and a selectable maximum frequency. The first mixer is configured to mix a fixed frequency clock signal with the in-phase local oscillator signal to output a first mixer output. The second mixer is configured to mix the fixed frequency clock signal with the quadrature local oscillator signal to output a second mixer output. An adder is configured to add the first and second mixer outputs to produce a frequency-modulated clock signal with a frequency that is about the sum of the fixed frequency and the local oscillator frequency and includes a periodic jitter.
摘要翻译：用于可控制地产生串行数据流中的抖动的系统包括频率发生器和第一和第二混频器。频率发生器被配置为输出具有至少约5MHz的本地振荡器频率的同相和正交本地振荡器信号。本地振荡器频率在可选择的最小频率和可选择的最大频率之间变化。第一混频器被配置为将固定频率时钟信号与同相本地振荡器信号混频以输出第一混频器输出。第二混频器被配置为将固定频率时钟信号与正交本地振荡器信号混频以输出第二混频器输出。加法器被配置为添加第一和第二混频器输出以产生频率约为固定频率和本地振荡器频率之和的频率调制时钟信号，并且包括周期性抖动。

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