Happy Thanksgiving to all. On Thursdays the USPTO publishes new patent applications. Both of today's Spotlight Applications concern aspects of digital fingerprinting. Assigned to Sun, the first application discloses techniques for media fingerprint indexing. Assigned to Microsoft, the second application discloses techniques for verifying the integrity of remote data using digital fingerprinting.
20090290764, "System and Method for Media Fingerprint Indexing," apparently assigned to Sun Microsystems.
Abstract
A fingerprint and indexing service is implemented to receive a media object and generate a fingerprint corresponding to the media object. The fingerprint and indexing service may segment the fingerprint into frames and generate a confidence value for each bit within each frame. The confidence values may be added together and totaled, such that each frame has a corresponding confidence score. The frames may be ranked, according to their confidence scores. N of the top ranked frames may be selected as the index. Subsequently, a search component may determine the index values for a query media object. The database of media objects may be searched for matching index values for fingerprints with fingerprint lengths matching the query media object's length. Once a match is declared, the fingerprints of the query media object and the matching media objects within the database may be compared to determine if a match exists.
20090290714, "Protocol for Verifying Integrity of Remote Data," assigned to Microsoft.
Abstract
An exemplary method for verifying the integrity of remotely stored data includes providing a key; providing a fingerprint, the fingerprint generated using the key in a keyed cryptographic hash function as applied to data of known integrity; sending the key to a remote storage location that stores a copy of the data of known integrity; receiving a fingerprint from the remote storage location, the fingerprint generated using the key in a keyed cryptographic hash function as applied to the remotely stored copy of the data; and verifying the integrity of the remotely stored copy of the data based at least in part on comparing the provided fingerprint to the received fingerprint. Other exemplary methods, systems, etc., are also disclosed.
Abstract
A fingerprint and indexing service is implemented to receive a media object and generate a fingerprint corresponding to the media object. The fingerprint and indexing service may segment the fingerprint into frames and generate a confidence value for each bit within each frame. The confidence values may be added together and totaled, such that each frame has a corresponding confidence score. The frames may be ranked, according to their confidence scores. N of the top ranked frames may be selected as the index. Subsequently, a search component may determine the index values for a query media object. The database of media objects may be searched for matching index values for fingerprints with fingerprint lengths matching the query media object's length. Once a match is declared, the fingerprints of the query media object and the matching media objects within the database may be compared to determine if a match exists.
20090290714, "Protocol for Verifying Integrity of Remote Data," assigned to Microsoft.
Abstract
An exemplary method for verifying the integrity of remotely stored data includes providing a key; providing a fingerprint, the fingerprint generated using the key in a keyed cryptographic hash function as applied to data of known integrity; sending the key to a remote storage location that stores a copy of the data of known integrity; receiving a fingerprint from the remote storage location, the fingerprint generated using the key in a keyed cryptographic hash function as applied to the remotely stored copy of the data; and verifying the integrity of the remotely stored copy of the data based at least in part on comparing the provided fingerprint to the received fingerprint. Other exemplary methods, systems, etc., are also disclosed.
