公开(公告)号：US09811110B2

公开(公告)日：2017-11-07

申请号：US14924876

申请日：2015-10-28

Applicant: Napatech A/S

Inventor： René Krog Josiassen ,  Søren Kragh

IPC: G06F1/04 ,  G06F3/05 ,  H04J3/06

CPC classification number: G06F1/04 ,  G06F3/05 ,  H04J3/0697

Abstract: A system and a method of sampling an event signal using multiple clocking signals each provided in a separate candidate clock domain each of which also receives points in time from a master clock. From each candidate clock domain, clocked by the individual clocking signals, pairs of a received point in time and event signal value are fed to a master clock domain. In the master clock domain, the values of the event signal may be determined over time as a function of master clock time. This may be used for synchronizing operation in the master clock domain of e.g. packet time stamping with an overall time defined by the event signal. Using multiple clocking signals for the sampling, a much more precise sampling of the event signal is facilitated.

公开(公告)号：US20160116935A1

公开(公告)日：2016-04-28

申请号：US14924876

申请日：2015-10-28

Applicant: Napatech A/S

Inventor： René Krog Josiassen ,  Søren Kragh

IPC: G06F1/04

CPC classification number: G06F1/04 ,  G06F3/05 ,  H04J3/0697

Abstract: A system and a method of sampling an event signal using multiple clocking signals each provided in a separate candidate clock domain each of which also receives points in time from a master clock. From each candidate clock domain, clocked by the individual clocking signals, pairs of a received point in time and event signal value are fed to a master clock domain. In the master clock domain, the values of the event signal may be determined over time as a function of master clock time. This may be used for synchronizing operation in the master clock domain of e.g. packet time stamping with an overall time defined by the event signal. Using multiple clocking signals for the sampling, a much more precise sampling of the event signal is facilitated.

Abstract translation: 一种使用多个时钟信号对事件信号采样的系统和方法，每个时钟信号分别在单独的候选时钟域中提供，每个时钟信号也从主时钟接收时间点。 从每个候选时钟域，由各个时钟信号计时，接收的时间点和事件信号值的对被馈送到主时钟域。 在主时钟域中，事件信号的值可以随时间而被确定为主时钟时间的函数。 这可以用于例如主时钟域中的同步操作。 分组时间戳由事件信号定义的总时间。 使用多个时钟信号进行采样，便于对事件信号进行更精确的采样。