Steganography in Digital Signal Encoders
3 Assignments
0 Petitions
Accused Products
Abstract
In a method for embedding steganographic information into the signal information of a signal encoder, a solution is to be created, which enables steganographic information being embedded into the signal information of a signal encoder such that a reduction of the voice quality is largely avoided. This is achieved by means of providing data information, particularly voice information, selecting steganographic information from a quantity of steganographic information, generating a code word from a code book provided by means of the signal encoder on the basis of the code elements forming the code book such that with the use of the code word generated within the scope of a transmission standard associated with the code book the data information is encoded into signal information containing the code word and/or making reference to the code word; and by the code word generated having an additional feature that can be calculated on the basis of the code elements forming the code word, wherein the additional feature represents the steganographic information.
-
Citations
28 Claims
-
1-13. -13. (canceled)
-
14. A method for embedding steganographic information into signal information of a signal encoder, comprising:
-
providing data information; selecting steganographic information from a set of steganographic information items; and generating a code word from a provided code book using the signal encoder as a function of code elements forming the code word so that (a) the data information is encoded, by using the generated code word within the scope of a transmission standard which is associated with the code book, into signal information containing the code word and/or pointing to the code word; and
(b) the generated code word has an additional characteristic which is calculated as a function of the code elements forming the code word, the additional characteristic representing the steganographic information. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
Specification