The PTO publishes new pending patent applications on Thursdays. Both of today's Spotlight Applications concern aspects of digital watermarking. Assigned to Google, the first application discloses techniques for audio/video identification watermarking. Assigned to AT&T, the second application discloses techniques for creating watermarked media content in IPTV or iTV networks.
20140150111, "Audio/Video Identification Watermarking," assigned to Google.
The invention is directed to marking audio/video (A/V) signals for use in tracing content to a source. An ID controller captures an A/V synchronization fingerprint from a master A/V signal, stores the fingerprint in a data store, and provides signals to an ID encoder to have encoded an identifier into a copy of the master A/V signal. The identifier is encoded to be persistent through actions such as capture, compression, and/or transcoding. In one embodiment, the identifier is encoded as a bit sequence, where each bit is encoded using an encoding technique that is hereinafter called a Mississippi encoding technique. The encoded identifier within the copied A/V signal may later be determined by extracting the fingerprint and comparing it to the stored fingerprint to determine the identifier. The identifier may then be used to trace a source of the copied A/V signal.
20140157343, "Watermarked media content in IPTV or iTV networks," assigned to AT&T.
A method that incorporates teachings of the present disclosure may embedding a watermark in media content for presentation at a rendering device using an editor to associate the watermark with one or more metadata pointers that point to additional media content according to an embedded link of the watermark to generate a group of one or more metadata pointers where the watermark includes an embedded link to additional media content used to modify the media content based on a content exchange between the rendering device and a computer. The method may further include storing the group of one or more metadata pointers, where a selection of the watermark invokes access to the altered media content containing the additional media content associated with the watermark, thereby producing the altered media content at the one or more user devices. Other embodiments are disclosed.