SYNCHRONIZATION OF VIDEO WITH TELEMETRY SIGNALS METHOD AND APPARATUS
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United States of America Patent
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Issued Date -
Mar 18, 2010
app pub date -
May 1, 2009
filing date -
Sep 12, 2008
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Abandoned
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Abstract
An Ethernet-compatible synchronization process between isolated digital data streams assures synchronization by embedding an available time code from a first stream into data locations in a second stream that are known a priori to be unneeded. Successive bits of time code values, generated as a step in acquiring and digitizing analog sensor data, are inserted into least-significant-bit locations in a digitized audio stream generated along with digitized image data by a digital video process. The overwritten LSB locations are shown to have no discernable effect on audio reconstructed from the Ethernet packets. Telemetry recovery is the reverse of the embedment process, and the data streams are readily synchronized by numerical methods.
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