Interleaving synchronous data and asynchronous data in a single data storage file
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United States of America Patent
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Nov 30, 2004
Grant Date -
Jul 15, 2004
app pub date -
Dec 23, 2003
filing date -
Jan 10, 2003
priority date (Note) -
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Abstract
A method and apparatus for storing interleaved synchronous and asynchronous data in a single data storage file is disclosed. Synchronous data and asynchronous data are stored in an interleaved order. Synchronous data is stored at regular periodic intervals and is stored within the data storage file in a data record having a constant sized data field. At least one data pattern is precluded from use as synchronous data. Data associated with asynchronous events are stored in the data storage file in a data record starting with this precluded data pattern, and followed by a field indicating the asynchronous event type. The time interval from an event associated with the previously recorded data can be determined and optionally stored in a variable length time-interval data field. The size of the variable length time-interval data field is stored in a time-length data field.
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