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Method, system, and storage media for global synchronization of time

  • US 9,256,391 B2
  • Filed: 01/22/2010
  • Issued: 02/09/2016
  • Est. Priority Date: 01/22/2010
  • Status: Expired due to Fees
First Claim
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1. A method for synchronizing time in a plurality of graphical displays provided within a human-machine interface (HMI), said method comprising:

  • storing automation data relating to an event corresponding to an automation operation and a timestamp associated therewith;

    displaying the stored automation data via a plurality of graphical displays;

    receiving data refresh configuration parameters via a configuration tool within a human-machine interface (HMI);

    storing the data refresh configuration parameters in a memory;

    generating, by HMI, a data refresh message that includes the data refresh configuration parameters and not the data to be refreshed;

    sending the data refresh message to each of the plurality of graphical displays; and

    refreshing, synchronously by the plurality of graphical displays, display of the stored automation data based on the data refresh configuration parameters in the data refresh message and the timestamp associated with the automation data, whereby time is synchronized on the plurality of graphical displays that were synchronously refreshed;

    wherein the data refresh configuration parameters include a data refresh rate, a start time of a desired time period, and one of an end time of the desired time period or a duration of the desired time period, wherein each of the plurality of graphical displays is synchronized to the start time, and one of the end time of the desired time period or the duration of the desired time period.

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