Methods and apparatus for embedding codes in compressed...

Details Methods and apparatus for embedding codes in compressed... Methods and apparatus for embedding codes in compressed...

2007-10-10

2011-12-13

Flanders, Andrew C (Department: 2614)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

Reexamination Certificate

active

08078301

ABSTRACT:
Methods and apparatus for embedding codes in compressed audio data streams are disclosed. An example method to embed a code in a compressed audio data stream disclosed herein comprises obtaining a plurality of transform coefficients comprising the compressed audio data stream, wherein the plurality of transform coefficients is represented by a respective plurality of mantissas and a respective plurality of scale factors, and modifying a mantissa in the plurality of mantissas and a corresponding scale factor in the plurality of scale factors to embed the code in the compressed audio data stream.

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