Oin Thursdays the USPTO publishes new pending patent applications. Both of today's Spotlight Applications concern aspects of digital fingerprinting. Apparently assigned to Google, the first application discloses techniques for intervalgram representation of audio for melody recognition. Assigned to Gracenote, the second application discloses techniques for enhancing rendering of a content item.
20120160078, "Intervalgram Representation of Audio for Melody Recognition," apparently assigned to Google.
A system, method, and computer readable storage medium generates an audio fingerprint for an input audio clip that is robust to differences in key, instrumentation, and other performance variations. The audio fingerprint comprises a sequence of intervalgrams that represent a melody in an audio clip according pitch intervals between different time points in the audio clip. The fingerprint for an input audio clip can be compared to a set of reference fingerprints in a reference database to determine a matching reference audio clip.
20120170798, "Method of enhancing rendering of content item, client system and server system," assigned to Gracenote, Inc.
A method and system of providing further information on a content item is described. The method may include receiving a portion of the content item via a microphone of a user device. The received portion of the content item may be distinct from an identifier associated with the content item. Characteristic features are extracted from the portion of the content item to compute a digital fingerprint for the received portion of the content item. Further information on the content item may then be accessed using the digital fingerprint. The further information is to be displayed on the user device and the accessing may comprise searching the database using the computed fingerprint.