APPARATUS AND METHOD FOR EMBEDDING AND EXTRACTING

专利名称：APPARATUS AND METHOD FOR

EMBEDDING AND EXTRACTING

INFORMATION IN ANALOG SIGNALS USINGDISTRIBUTED SIGNAL FEATURES ANDREPLICA MODULATION

发明人：Rade Petrovic申请号：US13315595申请日：20111209

公开号：US20120084870A1公开日：20120405

专利附图：

摘要：Apparatus and methods are provided for embedding or embedding digital datainto an analog host or cover signal. A distributed signal feature of the cover signal in aparticular domain (time, frequency or space) is calculated and compared with a set ofpredefined quantization values corresponding to an information symbol to be encoded.The amount of change required to modify the signal feature to the determined targetquantization value is calculated and the cover signal is modified accordingly to so changethe feature value over a predefined interval. Information symbols are extracted by theopposite process. In one embodiment, the predefined value is a short term auto

correlation value of the cover signal.

申请人：Rade Petrovic

地址：San Diego CA US

国籍：US

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