Data processing apparatus and method

Details Data processing apparatus and method Data processing apparatus and method

2007-10-02

2007-10-02

Philippe, Gims (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240020

Reexamination Certificate

active

10612738

ABSTRACT:
An encoding data processing apparatus generates at least one water marked version of an original item of material formed by introducing one of a predetermined set of code words into a copy of the original material item. The apparatus has a bandwidth adaptation processor configured to adapt a bandwidth of the code word to at least part of a bandwidth of the original material item, and an encoder configured to combine the bandwidth adapted code word with a copy of the original material item. The probability of correctly detecting a code word is improved by combining the code word with a part of the bandwidth of the material item. As a result, if the material is transformed in some way the code word may still be detected.

REFERENCES:
patent: 5664018 (1997-09-01), Leighton
patent: 6282650 (2001-08-01), Davis
patent: 6647129 (2003-11-01), Rhoads
patent: 2003/0112996 (2003-06-01), Holliman et al.
patent: 2003/0200439 (2003-10-01), Moskowitz
patent: 2006/0005029 (2006-01-01), Petrovic et al.
patent: WO 02/15587 (2002-02-01), None

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