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    • 5. 发明申请
    • APPARATUS AND METHOD FOR ESTIMATING TIME STAMP
    • 估计时间戳的装置和方法
    • US20120155497A1
    • 2012-06-21
    • US13328269
    • 2011-12-16
    • Seung-Woo LeeBhum-Cheol LeeJung-Hee Lee
    • Seung-Woo LeeBhum-Cheol LeeJung-Hee Lee
    • H04J3/06
    • H04J3/0697H04J3/0638H04J3/0658H04J3/0667
    • An apparatus includes a difference extraction unit to extract a difference between a second time stamp value, which is obtained by adjusting a first time stamp value that is measured at a time of arrival of a synchronization message transmitted by the master at a Layer 3 to be synchronized in frequency with a clock of the master, and a third time stamp value, which is measured at a time of departure of the synchronization message from the master; a minimum filter to select a minimum from one or more difference values extracted by the difference extraction unit; and a delay variation calculation unit to estimate a time of arrival of a current synchronization message at the Layer 3 based on the selected minimum and calculate a delay variation.
    • 一种装置,包括差分提取单元,用于提取第二时间标记值之间的差异,该第二时间戳值是通过调整由第三层发送的由主机发送的同步消息的到达时所测量的第一时间戳值而获得的 频率与主机的时钟同步,以及第三时间戳值,其在与主机的同步消息的离开时测量; 最小滤波器,用于从由所述差分提取单元提取的一个或多个差值中选择最小值; 以及延迟变化计算单元,基于所选择的最小值来估计当前同步消息在层3的到达时间,并计算延迟变化。
    • 6. 发明授权
    • Apparatus and method for estimating time stamp
    • 用于估计时间戳的装置和方法
    • US08934506B2
    • 2015-01-13
    • US13328269
    • 2011-12-16
    • Seung-Woo LeeBhum-Cheol LeeJung-Hee Lee
    • Seung-Woo LeeBhum-Cheol LeeJung-Hee Lee
    • H04J3/06
    • H04J3/0697H04J3/0638H04J3/0658H04J3/0667
    • An apparatus includes a difference extraction unit to extract a difference between a second time stamp value, which is obtained by adjusting a first time stamp value that is measured at a time of arrival of a synchronization message transmitted by the master at a Layer 3 to be synchronized in frequency with a clock of the master, and a third time stamp value, which is measured at a time of departure of the synchronization message from the master; a minimum filter to select a minimum from one or more difference values extracted by the difference extraction unit; and a delay variation calculation unit to estimate a time of arrival of a current synchronization message at the Layer 3 based on the selected minimum and calculate a delay variation.
    • 一种装置,包括差分提取单元,用于提取第二时间标记值之间的差异,该第二时间戳值是通过调整由第三层发送的由主机发送的同步消息的到达时所测量的第一时间戳值而获得的 频率与主机的时钟同步,以及第三时间戳值,其在与主机的同步消息的离开时测量; 最小滤波器,用于从由所述差分提取单元提取的一个或多个差值中选择最小值; 以及延迟变化计算单元,基于所选择的最小值来估计当前同步消息在层3的到达时间,并计算延迟变化。
    • 7. 发明授权
    • Efficient switching device and method for fabricating the same using multiple shared memories
    • 高效开关器件及其制造方法使用多个共享存储器
    • US08050280B2
    • 2011-11-01
    • US11292983
    • 2005-12-01
    • Ick-Sung ChoiJeong-Hee LeeDae-Geun ParkHyoung-Il LeeJong-Moo SohnSeung-Woo LeeBhum-Cheol Lee
    • Ick-Sung ChoiJeong-Hee LeeDae-Geun ParkHyoung-Il LeeJong-Moo SohnSeung-Woo LeeBhum-Cheol Lee
    • H04L12/56
    • H04L49/3036H04L49/25H04L49/3072
    • An efficient switching device and a method for fabricating the same using multiple shared memories are provided. The switching device includes: an output time determination unit to determine an output time to an output port; an output time administration unit to administer a possible data output time for each output port; a memory bank selection unit to select a memory bank with an empty data output time position; a memory bank utilization information administration unit to administer utilization information per output time; a connection unit to deliver transmission data to an output time position; a shared memory unit to store the data in the output time position, to administer dispersed shared memory banks according to an output time, and to read and output transmission data; and an output port connection unit receiving output data to read and transmit output port information of the data to a corresponding output port.
    • 提供了一种有效的开关器件及其使用多个共享存储器的制造方法。 开关装置包括:输出时间确定单元,用于确定到输出端口的输出时间; 输出时间管理单元,用于管理每个输出端口的可能的数据输出时间; 存储器选择单元,用于选择具有空数据输出时间位置的存储体; 存储库利用信息管理单元,用于管理每个输出时间的利用信息; 连接单元,用于将传输数据传送到输出时间位置; 共享存储器单元,用于将数据存储在输出时间位置,以根据输出时间来管理分散的共享存储体,并读取和输出传输数据; 以及输出端口连接单元,其接收输出数据以将数据的输出端口信息读取并发送到相应的输出端口。