Fast hash-based multimedia object metadata retrieval
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United States of America Patent
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N/A
Issued Date -
Jun 30, 2005
app pub date -
Aug 4, 2004
filing date -
Feb 6, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
When a client requests metadata for a multimedia object, a server (120) computes a fingerprint for the multimedia object and matches it against entries stored in a primary database (121). Additionally, the server system (120) monitors one or more transmission channels such as radio broadcast channels, and computes transmission fingerprints for transmissions on those channels. The transmission fingerprints are matched with the fingerprints stored in the primary database (121), and if a match is found, an entry for the identified transmission is then added to the secondary database (122). Preferably this entry contains the transmission fingerprint. Subsequent matches are then first performed against the secondary database (122) and only upon unsuccessful matches also matched against the primary database (121). Also covers the method and a computer program product for performing the method.
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