Patent ID: 7496590
Filing Date: 2009-02-24
Classification: G05B,Y10S

Abstract:
1. A database server compression and storage facility that operates upon a stream of data points received from a data source in a control environment, to reduce the volume of data points that are stored in a database, wherein each data point specifies a value and timestamp, by discarding received data points that do not significantly depart from a signal trend established by a sequence of received data points from the streaming time stamped data source, a database server compression and storage facility comprising: a database a compression test sequence applied, upon receiving a new data point, to at least the received new data point, a held over data point and a last data point stored in the database; and a time override that forces storing a candidate data point without regard to whether the candidate point would be stored as a result of applying the compression test sequence, upon receiving the new data points; wherein the candidate data point is the held over data point; and wherein the time override further comprises a real-time window timer that measures an elapsed period after the time stamp of the held over point and stores the held over data point in the database in response to a specified period, measured by the real-time window timer, expiring.