Abstract: Example methods and systems for content-based association of a device to a user are presented. In an example method, data corresponding to each of a plurality of items of content stored within a user device are accessed. A device identifier for the user device is generated based on the data. The device identifier is transmitted from the user device to a service device to associate the user device with a user.

Abstract: Example methods and systems for content-based association of a device to a user are presented. In an example method, data corresponding to each of a plurality of items of content stored within a user device are accessed. A device identifier for the user device is generated based on the data. The device identifier is transmitted from the user device to a service device to associate the user device with a user.

Abstract: Methods and systems for searching for and retrieving video content via fingerprint matching are described. In some example embodiments, the methods and systems access an index of reference fingerprints, such as quantized values associated with multiple values calculated from patches of a frame, that are associated with sequential frames of known video content. The methods and systems may receive a search query that includes a group of query fingerprints associated with sequential frames of video content presented at a client device, access the index, compare the group of query fingerprints to reference fingerprints of the index, determine that the group of query fingerprints match the reference fingerprints of the index, and identify the video content presented at the client device based on the determined match.

Abstract: Methods and systems for searching for and retrieving video content via fingerprint matching are described. In some example embodiments, the methods and systems access an index of reference fingerprints, such as quantized values associated with multiple values calculated from patches of a frame, that are associated with sequential frames of known video content. The methods and systems may receive a search query that includes a group of query fingerprints associated with sequential frames of video content presented at a client device, access the index, compare the group of query fingerprints to reference fingerprints of the index, determine that the group of query fingerprints match the reference fingerprints of the index, and identify the video content presented at the client device based on the determined match.

Abstract: Methods and systems for determining a certain version of a known media content item, such as an known audio recording, matches an unknown media content item, such as an unknown audio recording, are described. In some example embodiments, the methods and systems facilitate the identification of a media content item as a specific version of a song or other audio recording by performing comparisons of the differences between two or more versions of the song or audio recording, among other things.

Abstract: Methods and systems for searching for and retrieving video content via fingerprint matching are described. In some example embodiments, the methods and systems access an index of reference fingerprints, such as quantized values associated with multiple values calculated from patches of a frame, that are associated with sequential frames of known video content. The methods and systems may receive a search query that includes a group of query fingerprints associated with sequential frames of video content presented at a client device, access the index, compare the group of query fingerprints to reference fingerprints of the index, determine that the group of query fingerprints match the reference fingerprints of the index, and identify the video content presented at the client device based on the determined match.

Abstract: A method and system is provided for doing compact disc TOC look-ups cheaply and efficiently by using a special indexing mechanism particularized to TOC look-ups. The indexing scheme allows a successful search of TOCs using as few as 2 disk seeks in contrast to the usual hundreds of disk seeks required by a general purpose indexing scheme. This performance improvement is achieved by using a static database of TOCs in a read-only implementation so that the data organization and code for lookups can be optimized without regard for any updates to this data at a later time. The index data structure is arranged in a fashion that allows for seek-less, linear scans of index information once the proper scan location in the index has been identified.

Abstract: A method and system is provided for doing compact disc TOC look-ups cheaply and efficiently by using a special indexing mechanism particularized to TOC look-ups. The indexing scheme allows a successful search of TOCs using as few as 2 disk seeks in contrast to the usual hundreds of disk seeks required by a general purpose indexing scheme. This performance improvement is achieved by using a static database of TOCs in a read-only implementation so that the data organization and code for lookups can be optimized without regard for any updates to this data at a later time. The index data structure is arranged in a fashion that allows for seek-less, linear scans of index information once the proper scan location in the index has been identified.

Abstract: A method and system is provided for recognizing video content represented by temporally segmented video content. An example system includes a communication module and a search and match module. The communications module may be configured to receive a source table of contents (TOC) related to a temporally segmented video content. The source TOC may include one or more titles and a source playback length. The search and match module may be configured to interrogate a video products database with the source TOC to determine one or more match results, utilizing a fuzzy matching technique.

Abstract: A signature array of digitally sampled audio is formed from segment(s) of the digitally sampled audio by counting the number of occurrences within the segment(s) in each of a plurality of value bands or slots, such as amplitude bands. The signature array undergoes a fuzzy comparison with signatures arrays in the database. If more than one potential match is found, a more precise comparison is made. In the case of compact discs (CDs), five second sample segments may taken from the beginning, middle and end of each track to detect, e.g., the amplitude of the digitally sampled audio on the CD. A CD signature array may be formed of approximately 2000 value bands or slots by accumulating the occurrence of signals within each slot for all of the sample segments of the CD.