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    • 2. 发明授权
    • Control methods for a metro optical amplifier
    • 城域光放大器的控制方法
    • US06614587B1
    • 2003-09-02
    • US09795789
    • 2001-02-28
    • Jun YuCharles MaoJin Xie
    • Jun YuCharles MaoJin Xie
    • H01S300
    • H04B10/296
    • A reliable and inexpensive method for deploying, operating and maintaining optical amplifiers in a variety of optical networks under a wide range of conditions using channel number reference tables. A preferred embodiment of the current invention may control one or more optical amplifiers or gain blocks operating in a variety of modes such as AGC mode, ALC mode and hybrid AGC/ALC mode without requiring the use of expensive channel counters. Channel number reference tables may be calculated based on initial input optical power output readings and a count of the number of channels initially served by the amplifier. According to the current invention, changes in the number of channels may be monitored and used to control a gain block by monitoring the gain block input optical power output, converting to a gain block voltage and referencing the channel number reference table.
    • 在广泛的条件下使用信道号参考表,在各种光网络中部署,操作和维护光放大器的可靠且廉价的方法。 本发明的一个优选实施例可以控制一个或多个光功率放大器或增益块,其以各种模式(例如AGC模式,ALC模式和混合AGC / ALC模式)运行,而不需要使用昂贵的信道计数器。 可以基于初始输入光功率输出读数和由放大器最初服务的通道数的计数来计算通道号参考表。 根据本发明,可以通过监视增益块输入光功率输出,转换为增益块电压并参考频道号参考表来监视和使用信道数量的变化来控制增益块。
    • 5. 发明授权
    • Asymmetry compensation system
    • 不对称补偿系统
    • US08477581B1
    • 2013-07-02
    • US12104879
    • 2008-04-17
    • Jingfeng LiuJin XieMats Oberg
    • Jingfeng LiuJin XieMats Oberg
    • G11B20/10
    • G11B20/10027G11B20/10037G11B20/10046G11B20/10296G11B20/10351G11B2220/2537
    • A system with a nonlinear element processes a replay signal with a scaling factor into a signal compensated for asymmetry. The replay signal may include data from an optical disk. The scaling factor may be estimated based on the compensated signal and a scaling factor gain. The replay signal and the compensated signal may be converted into digital signals and processed digitally. In one embodiment, the compensated signal may be calculated as approximately the scaling factor multiplied by a square of an amplitude of the replay signal added to the amplitude of the replay signal. In another embodiment, the compensated signal may be calculated as approximately the scaling factor multiplied by an absolute value of an amplitude of the replay signal added to the amplitude of the replay signal. A related method is also disclosed. Other embodiments are provided, and each of the embodiments described herein can be used alone or in combination with one another.
    • 具有非线性元件的系统将缩放因子的重放信号处理成补偿不对称的信号。 重放信号可以包括来自光盘的数据。 可以基于补偿信号和缩放因子增益来估计缩放因子。 重播信号和补偿信号可以被转换成数字信号并以数字方式处理。 在一个实施例中,可以将补偿信号近似计算为乘以重放信号的振幅的重放信号的振幅的平方乘以比例因子。 在另一个实施例中,可以将补偿信号近似地计算为与重放信号的振幅相加的重放信号的振幅的绝对值乘以比例因子。 还公开了相关方法。 提供了其它实施例,并且本文所述的每个实施例可以单独使用或彼此组合使用。
    • 7. 发明授权
    • RF interpolated time recovery using clock synchronized to wobble
    • RF内插时间恢复使用时钟同步摆动
    • US08477582B1
    • 2013-07-02
    • US13492975
    • 2012-06-11
    • Jin XieJingfeng Liu
    • Jin XieJingfeng Liu
    • G11B20/14G11B7/00
    • G11B7/0053G11B2007/0006
    • Devices, systems, methods, and other embodiments associated with clocking a radio frequency channel are described. In one embodiment, an apparatus includes a wobble channel logic configured to at least partially decode a digital wobble signal and configured to control a time base generator to generate a clock signal that is synchronized to wobble data. The apparatus further includes scaling logic to scale the clock signal to produce a scaled clock signal, and radio frequency channel logic configured to at least partially decode a digital radio frequency signal. The radio frequency channel logic is configured to be clocked by the clock signal and the wobble channel logic is configured to be clocked by the scaled clock signal.
    • 描述了与计时射频信道相关联的设备,系统,方法和其他实施例。 在一个实施例中,装置包括摆动通道逻辑,其被配置为至少部分地解码数字摆动信号,并配置成控制时基发生器以产生与摆动数据同步的时钟信号。 该装置还包括缩放逻辑以缩放时钟信号以产生缩放的时钟信号,以及被配置为至少部分地解码数字射频信号的射频信道逻辑。 射频通道逻辑被配置为由时钟信号计时,并且摆动通道逻辑被配置为由缩放的时钟信号来计时。
    • 9. 发明授权
    • Detector for low frequency offset distortion
    • 低频偏移失真检测器
    • US08111739B1
    • 2012-02-07
    • US12025581
    • 2008-02-04
    • Jingfeng LiuHongwei SongJin Xie
    • Jingfeng LiuHongwei SongJin Xie
    • H03H7/30
    • G11B20/10351G11B2220/2537
    • A system for removing low frequency offset distortion from a digital signal, the system comprising an analog-to-digital converter to convert an analog frequency signal associated with an optical storage medium to a digital frequency signal; an equalizer to equalize the digital frequency signal; an estimator to estimate a low frequency offset distortion of the digital frequency signal; a compensator to substantially cancel the low frequency offset distortion of the digital frequency signal from the equalized digital frequency signal using the estimate; and a decoder to decode the equalized digital frequency signal having the low frequency offset distortion substantially cancelled therefrom.
    • 一种用于从数字信号中去除低频偏移失真的系统,该系统包括用于将与光学存储介质相关联的模拟频率信号转换为数字频率信号的模拟 - 数字转换器; 均衡器以均衡数字频率信号; 用于估计数字频率信号的低频偏移失真的估计器; 补偿器,用于使用所述估计从所述均衡数字频率信号基本上消除所述数字频率信号的低频偏移失真; 以及解码器,用于解码具有基本上从其中抵消的低频偏移失真的均衡数字频率信号。