Patent ID: 9118951
Filing Date: 2015-08-25
Classification: H04N

Abstract:
1. A method of operating a secondary device in a manner associated with operation of a primary device, the method comprising: (a) obtaining first information corresponding to a media asset being output by the primary device; (b) processing the first information to determine local media-signature information; (c) transmitting the first information for receipt by a server; (d) receiving secondary information from the server, wherein the secondary information includes a plurality of asset-media signatures that respectively correspond to respective portions of the media asset; (e) determining a time-based correlation between at least one portion of the local media-signature information and at least one of the asset-media signatures; and based at least in part upon the plurality of asset-media signatures, further determining whether the media asset is no longer being output by the primary device; and (f) outputting one or more portions of time-relevant asset streams from the secondary device, the one or more portions being determined at least indirectly based upon the correlation; wherein steps (a), (b), and (e) are each repeated periodically, and wherein each repeated step (e) includes, in the secondary device, comparing the first information with a first subset of the plurality of asset-media signatures, the first subset corresponding to one or more time points close to a latest synchronization time point, to identify a match between the first information and one or more of the first subset of the plurality of asset-media signatures at the one or more time points.