Patent ID: 8261202
Filing Date: 2012-09-04
Classification: G06F,H04L

Abstract:
1. A method for providing master time control (MTC) services to a first historian application (HA) and a second HA, each said first and second HA configured to display content having a time of focus and a local time control (LTC) user interface when in an LTC mode, comprising the steps of: changing a time control mode for said first and said second HA from said LTC mode to an MTC mode; responsive to said changing said time control mode, synchronizing said times of focus for said first and second HAs to an MTC time of focus; displaying first and second content, each comprising time-stamped historical data obtained during a period of elapsed time defined by said MTC time of focus; wherein said LTC mode is a mode in which a local time control object is employed for manipulating said time of focus for any of said first and said second HAs, and said MTC mode is a mode in which a master time control object is employed for manipulating said times of focus for said first and said second HAs, and displaying a first and second trend having respective first and second hairlines for conveying time-stamped historical data, simultaneously moving said first hairline from a first location within said first trend to a second location within said first trend and said second hairline from a first location within said second trend to a second location within said second trend, said second location within said second trend being the same as the second location within said first trend.