Cloud callout identification of unknown broadcast signatures based on previously recorded broadcast signatures
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United States of America Patent
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Jul 19, 2022
Grant Date -
Dec 17, 2020
app pub date -
Aug 28, 2020
filing date -
Aug 30, 2011
priority date (Note) -
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Abstract
Broadcast signatures (fingerprints) from different sources are compared to distinguish between a known base media item and unknown versions of the known base media item, without prior storage of the unknown altered versions of the known base media item. Field recorders collect and store in buffers signatures found within portions of sequential broadcast content. Mobile devices (users) collect unknown signatures while recording broadcast content. Using a cloud callout routine, the mobile device requests a comparison between the collected unknown signatures and the field recorded signatures. Potential matches can be loose matches, strict matches or comparisons between failed loose comparisons.
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