New patents are issued by the USTPO on Tuesdays. This week's Spotlight Patents concern aspects of digital watermarking and digital fingerprinting. Assigned to Nagravision (CH), the first patent addresses techniques for embedding a watermark in uncompressed video data. Assigned to Gracenote, the second patent addresses techniques for inserting advertisements and/or other supplemental or replacement content into a stream of video content.
9,794,646, "Method and device to embed watermark in uncompressed video data," assigned to Nagravision S.A. (CH)
Abstract
A system and method to watermark an uncompressed content received at a client device in a compressed form and encrypted by at least one content key, said content key as well as watermark instruction forming Conditional Access Module (CAS) data, said CAS data being encrypted by a transmission key and comprising at least one signature to authenticate the CAS data, said client device comprising a CAS configured to process the CAS data, a descrambler having an input to receive the encrypted compressed content and an output to produce an compressed content, a decoder to convert the compressed content into uncompressed content, a watermark inserter connected to the output of the decoder, a secure activation module connected with the watermark inserter, a secure element connected with the watermark inserter and the secure activation module.
9,794,642, "Inserting advertisements into video content," assigned to Gracenote.
Abstract
Methods and systems to insert advertisements and/or other supplemental or replacement content into a stream of video content are described. In some example embodiments, the methods and systems receive a request to replace a portion of video content currently playing at a client device with supplemental video content, such as an advertisement. In response to the request, the methods and systems determine one or more fingerprints of the video content plating at the client device, identify one or more frames of the video content at which to insert the supplemental video content based on the one or more fingerprints, and insert the supplemental video content at the identified one or more frames of the video content.
