公开(公告)号：US20100135666A1

公开(公告)日：2010-06-03

申请号：US12611466

申请日：2009-11-03

申请人： Jong-deog KIM ,  Bong-kyu KIM ,  Quan LE ,  Kwang-ok KIM ,  Dong-soo LEE

发明人： Jong-deog KIM ,  Bong-kyu KIM ,  Quan LE ,  Kwang-ok KIM ,  Dong-soo LEE

IPC分类号： H04J14/08 ,  H04J14/00 ,  H04L7/00

CPC分类号： H04L7/0338 ,  H04L7/04

摘要： Disclosed is a clock phase aligning apparatus capable of synchronizing a clock signal in the middle of an upstream burst mode data bit in an optical line terminal of a passive optical network. The clock phase aligning apparatus effectively aligns a phase of a clock signal with a phase of data during an overhead period of burst mode packet data through an over-sampling scheme and a digital scheme. Burst mode data signals are subject to an over-sampling through a high speed continuous mode analog circuit and then converted into low speed parallel signals through a parallel conversion unit. Such low speed parallel signals are processed with respect to sampling patterns through a digital look-up scheme in a logic circuit device such that the phase of data is arranged with the phase of a clock signal during a limited bit stream specified in a burst mode preamble timing.

摘要翻译： 公开了一种能够使无源光网络的光线路终端中的上行脉冲串模式数据位的中间的时钟信号同步的时钟相位对准装置。 时钟相位对准装置通过过采样方案和数字方案，在突发模式分组数据的开销周期期间有效地将时钟信号的相位与数据相位对准。 突发模式数据信号通过高速连续模式模拟电路进行过采样，然后通过并行转换单元转换为低速并行信号。 通过逻辑电路设备中的数字查找方案，对采样模式进行这种低速并行信号的处理，使得数据相位在脉冲串前导码中指定的有限位流期间以时钟信号的相位排列 定时。

公开(公告)号：US20090148165A1

公开(公告)日：2009-06-11

申请号：US12134893

申请日：2008-06-06

申请人： Bong-kyu KIM ,  Bin-yeong Yoon ,  Young-tak Han ,  Yool Kwon ,  Bong-tae Kim

发明人： Bong-kyu KIM ,  Bin-yeong Yoon ,  Young-tak Han ,  Yool Kwon ,  Bong-tae Kim

IPC分类号： H04J14/02

CPC分类号： H04J14/0282 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04Q11/0067 ,  H04Q2011/0015 ,  H04Q2011/0096

摘要： Provided is an optical filtering apparatus which is applied to a Time Division Multiplexing Passive Optical Network (TDM-PON) based on a wavelength division multiplexing (WDM) method. The optical filtering apparatus includes: an optical signal distributing unit dividing an optical signal received from an optical line terminal into at least one optical signal with uniform output intensity, and distributing the at least one optical signal into at least one optical network unit; and a multiplexing unit combining a plurality of optical signals having different wavelengths received from the at least one optical network unit using a wavelength division multiplexing (WDM) method, and outputting the combined optical signal to the optical line terminal. Therefore, by using the optical filtering apparatus, it is possible to connect a large number of subscribers to an Optical Line Terminal (OLT) on a network such as Fiber To The Home (FTTH), thereby increasing efficiency in costs.

摘要翻译： 提供了一种基于波分复用（WDM）方法应用于时分复用无源光网络（TDM-PON）的光学滤波装置。 光学滤波装置包括：光信号分配单元，将从光线路终端接收的光信号分成具有均匀输出强度的至少一个光信号，并将至少一个光信号分配到至少一个光网络单元中; 以及复用单元，使用波分复用（WDM）方法组合从所述至少一个光网络单元接收的具有不同波长的多个光信号，并将所述组合的光信号输出到所述光线路终端。 因此，通过使用光滤波装置，可以将大量用户连接到诸如光纤到户（FTTH）的网络上的光线路终端（OLT），从而提高成本效率。