On Thursdays the USPTO publishes new pending patent applications. Both of today's Spotlight Applications concerns aspects of digital fingerprinting. Assigned to Nagravision (FR), the first application discloses techniques for tracing video content processed by a decoder. Assigned to Inventec (TW), the second application discloses techniques for partitioning data blocks in data deduplication.
20120134530, "Method to trace video content processed by a decoder," assigned to Nagravision (FR).
A method traces the origin of a (illegally) distributed video material. It fingerprints a data object A having a nominal stream format F to provide a fingerprinted data object B including a pre-fingerprinting forensic luring process.
20120136842, "Partitioning method of data blocks," assigned to Inventec Corporation (TW).
A partitioning method of data blocks is applied to a data de-duplication process. The method includes the following steps. A file structural tank partitioning program and a data block partitioning process are performed on an input file. A fingerprint feature value of a generated data block is compared with fingerprint feature values recorded in completed file structural tanks. If a duplicate fingerprint feature value exists in another file structural tank, it is determined whether the duplicate data block is a first data block of the existing file structural tank. If the data block is the same as the first data block of the existing file structural tank, it is further determined whether the structural tank feature values of the file structural tanks of the two data blocks are the same; and if yes, the data block to be compared is deleted.