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US 2004/0168065 A1Published application
Data processing apparatus and method
AssigneeSony United Kingdom Limited
InventorsJason Charles Pelly, Daniel Warren Tapson
Life of this patent
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AssigneeSony United Kingdom Limited
InventorsJason Charles Pelly, Daniel Warren Tapson
Estimating the term…
A data processing apparatus is operable to identify one of a plurality of code words present in a watermarked version of a material item. The marked version is formed by combining each of a plurality of parts of a code word with one of a plurality of units from which the material item is comprised. The apparatus comprises a recovery processor operable to recover at least one part of the code word from a corresponding unit of the marked material item, and a correlator. The correlator is operable to generate for the marked material unit, a dependent correlation value for the part of the code word recovered from the material unit and the corresponding part of at least one of the re-generated code words from the set. A detector is operable to determine whether at least one of the code words is present in the marked material item from the dependent correlation value for the part of the code word exceeding a predetermined threshold. The data processor may detect the presence of the code word with improved probability, in particular when parts of the material have been corrupted.
A data processing apparatus operable to identify at least one of a plurality of code words, forming a code word set, present in a marked version of a material item, the marked version having been formed by combining each of a plurality of parts of a code word with one of a plurality of units from which the material item is comprised, the apparatus comprising
A method of identifying one of a plurality of code words present in a marked material item, the marked version having been formed by combining each of a plurality of parts of a code word with one of a plurality of units from which the material item is comprised, the method comprising
An encoding data processing apparatus operable to form a marked version of a material item by combining each version of a material item with one or more of a plurality of code words from a code word set, each of a plurality of parts of the code word being combined with one of a plurality of units from which the material item is comprised.
A method of forming marked versions of a material item, comprising
A system for identifying versions of a material item, the system comprising
Dependencies are inferred from the claim text.