公开(公告)号：US20100074383A1

公开(公告)日：2010-03-25

申请号：US12423090

申请日：2009-04-14

申请人： SEUNG WOO LEE ,  Dae Geun PARK ,  Bhum Cheol LEE

发明人： SEUNG WOO LEE ,  Dae Geun PARK ,  Bhum Cheol LEE

IPC分类号： H04L7/00 ,  G06F15/16

CPC分类号： H04J3/0667 ,  H04J3/0697

摘要： A timestamping apparatus for network synchronization includes a recovery unit and a timestamping unit. The recovery unit extracts a recovery clock operating at an operation frequency of a transmission terminal from a sync signal received from the transmission terminal. The timestamping unit measures a timestamp value of an arrival time of the sync signal by measuring a phase difference between the recovery clock and a local clock of a receiving terminal.

摘要翻译： 用于网络同步的时间戳装置包括恢复单元和时间戳单元。 恢复单元从从发送终端接收到的同步信号中提取在发送终端的操作频率下工作的恢复时钟。 时间戳单元通过测量恢复时钟和接收终端的本地时钟之间的相位差来测量同步信号的到达时间的时间戳值。

公开(公告)号：US20170119081A1

公开(公告)日：2017-05-04

申请号：US15343743

申请日：2016-11-04

申请人： SEUNG WOO LEE ,  HANOK KANG

发明人： SEUNG WOO LEE ,  HANOK KANG

IPC分类号： A42B3/12 ,  A42B3/28 ,  A42B1/06 ,  A42C5/02 ,  A42B3/08 ,  A63B71/10 ,  A42B3/32 ,  A42B3/22

CPC分类号： A63B71/10 ,  A42B1/08 ,  A42B1/22 ,  A42B3/08

摘要： Headgear that can protect a head from an external impact and that can simply and minutely perform size adjustment is provided.The headgear includes: a main body that is worn on a user's head; and an impact absorption means that is provided within the main body to absorb an impact, when an impact is applied from the outside.