Method and apparatus for storing an increasing number of sequential real-time samples in a fixed amount of memory
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United States of America Patent
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Jan 2, 1996
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N/A
app pub date -
Aug 4, 1992
filing date -
Aug 4, 1992
priority date (Note) -
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Abstract
In data logging applications, a method and apparatus are disclosed for storing an increasing number of consecutive real-time data points, such as those descriptive of AC (alternating current) power line parameters, in a fixed amount of memory by periodically applying a novel compression technique. The compression technique preserves time relationships in the data while maximizing the level of detail consistent with a limited amount of memory. When the memory is full each data point stored is paired with another data point and one value is calculated that will represent the pair of data points, reducing the necessary memory to half and allowing more data points to be stored.
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